Series 998 User’s Manual Dual Channel, 1/8 DIN, Microprocessor-Based Temperature/Process Controller User Levels: • New User........................... go to Introduction • Experienced User................... go to page 4.1 • Expert User............................. go to page 4.1 Installers: • Set-up..................................... go to page 1.1 • Installation & Wiring ................go to page 2.
Using the Manual NOTE: Details of a “Note” appear here in the narrow box on the outside of each page. CAUTION: Details of a “Caution” appear here in the narrow box on the outside of each page. WARNING: Details of a “Warning” appear here in the narrow box on the outside of each page. Safety Information We use note, caution and warning symbols throughout this book to draw your attention to important operational and safety information.
Table of Contents Introduction Starting Out with the Watlow Series 998 i The Series 998 ii Display Loop ii Operation Menus iii Setup Menus iii Factory Menus Chapter 1 Hardware Setup 1.1 DIP Switch Locations and Functions 1.2 Input Type DIP Switches 1.3 External Power Supply DIP Switches 1.4 Setting the Lockout DIP Switch Chapter 2 Installation and Wiring 2.1 Panel Cutout and Dimensions 2.2 Installing the Series 998 2.4 Wiring the Series 998 2.4 Power Wiring 2.4 Sensor Installation Guidelines 2.
Notes WATLOW Series 998 User’s Manual Table of Contents
Introduction Starting Out With the Watlow Series 998 WATL W Channel A Control Outputs (Output 1A and 2A) Channel A Input (Input 1) Channel B Input (Input 2) PROCESS 1A 2A CH A CH B 1B DISPLAY AUTO MAN Event Input Channel B Control Outputs (Output 1B and 2B) 2B Optional Outputs 3 and 4 (alarms, retransmit or PC communications) MODE Figure i The Series 998. SERIES 998 Watlow’s Series 998 process controller is capable of two independent channels of process control.
Introduction Display Loop Channel A Process Channel B Process Channel A Process [`75] [`80] [`75] ∂ [```] [100] ∂ [125] ∂ [`80] ∂ [`°F] Channel A Channel B Channel B Process Set Point Process Set Point Units From the Display Loop, press the Mode key µ to reach the Operation menus. To return to the Display Loop from any point in any menu, press the Display key ∂. From the Display Loop, press both the Up-arrow and Down-arrow keys > and < for three seconds to reach the Setup menus.
Introduction From the Setup menus, press both the Up-arrow and Down-arrow keys > and < for three seconds to reach the Factory menus. To return to the Display Loop from any point in any menu, press the Display key ∂.
Notes iv WATLOW Series 998 User’s Manual Introduction
Chapter 1 Hardware Setup DIP Switch Locations and Functions The Watlow Series 998 has at least one and as many as six dual in-line package (DIP) switches inside the controller, depending on the model number. They allow users to configure the controller for a variety of input sensors, to provide power for external signal conditioners or to lockout front panel access to some functions.
DIP Switches ˜ NOTE: The input 2 DIP switch is mounted upside down. 1 - Set the input DIP switches to match the sensors you are using in your application. Only controllers with model number 99__22__-____ have input DIP switches. Input 2 DIP (Channel B) DIP Input 1 DIP (Channel A) DIP ON Controller Chassis Rear View Input 1 (Channel A) Input 2 (Channel B) 2 3 2 1 1 3 O N ↑ 2 2 1 1 3 O N ↑ 3 3 WATLOW Series 998 User’s Manual 2 3 0-20 or 4-20mA; 0-5, 1-5 or 0-10V O N ↑ 1 2 Figure 1.
DIP Switches NOTE: For other voltages or current settings contact the factory. 2 - Set DIP switches for outputs equipped with an external signal conditioner power supply. Only controllers with model number 99__-____-T___ or 99__-____-_T__ have an external signal conditioner power supply.
DIP Switches ç CAUTION: The lockout DIP switch makes the Setup and Factory menus unavailable. Configure all the Setup and Factory menus before locking them out. Failure to do so could result in damage to equipment in the event of a setup error. 4 - The lockout DIP switch hides the Setup Menus (Input, Output, Global and Communications) and the Factory Menus (Panel Lockout, Diagnostics and Calibration). All units have a lockout DIP switch.
Chapter 2 Installation and Wiring NOTE: A minimum of 1.66” (42.2mm) spacing between panel cutouts is recommended. Panel Cutout Maximum Panel Thickness 0.38" (9.65mm) 3.62" + 0.03 -0.00 (92mm + 0.8) Figure 2.1a Series 998 Panel Cutout Dimensions. 1.77 + 0.02 -0.00 (45mm + 0.6) WATL W PROCESS WATL W DSPY 4.03" (102mm) 1A 2A CH A CH B 1B 2B MODE 2.18" (55mm) PROCESS DISPLAY AUTO MAN 1A MODE 2A 1B CH A AUTO CH B MAN 2B SERIES 998 4.03" (102mm) SERIES 998 2.
Installing Installing the Series 998 ˜ Installing and mounting requires access to the back of the panel. NOTE: Removing the controller chassis from its case makes mounting easier. 1. Make a panel cutout. 2. To remove the controller chassis from its case, press in firmly on the two tabs on one side or the top of the bezel until they unsnap, then unsnap the two tabs on the opposite side or the bottom. Pull the chassis out of the case by gently rocking it. 3. Slide the case into the panel cutout.
Installing ç CAUTION: Follow the installation procedure exactly to guarantee a proper NEMA 4X seal. Make sure the gasket between the panel and the rim of the case is not twisted and is seated properly. Failure to do so could result in damage to equipment. 4. Loosen the mounting bracket screws enough to allow for the mounting collar and panel thickness. Place each mounting bracket into the mounting slots (head of the screw facing the back of the controller).
Wiring Wiring the Series 998 ç WARNING: To avoid potential electric shock, use National Electric Code (NEC) safety practices when wiring and connecting this unit to a power source and to electrical sensors or peripheral devices. Failure to do so could result in injury or death. NOTE: Input-to-output isolation is defeated when the external signal conditioner power supply is used to power a transmitter connected to input 1 or input 2. Figure 2.4 Power wiring.
Wiring Event Input 1 OPTO ISOLATOR Standard on all units 14 - 36VÎ (dc) Event Input 1 off (open) 0 - 3VÎ (dc) Event Input 1 on (closed) 4.99KΩ .01µf 750Ω +24VÎ (dc) 10KΩ 23 24 OR 23 Internal Circuitry 24 + 4.99KΩ 23 - 24 Wiring 0-20 and 4-20mA Process Inputs Certain “transmitters” used in process input applications are producing internal resistor failures in the Watlow Series 988 family of controllers.
Wiring Example Figure 2.6 System Wiring Examples. L1 L1 L2 L2 Mercury Relay Fuse HighTemperature Light Earthground 21 22 12 13 14 15 16 17 18 19 20 ç WARNING: To avoid potential electric shock, use National Electric Code (NEC) safety practices when wiring and connecting this unit to a power source and to electrical sensors or peripheral devices. Failure to do so could result in injury or death.
Wiring Notes L1 L2 earth ground 11 ç 21 power 22 WARNING: To avoid damage to property and equipment, and/or injury or loss of life, use National Electric Code (NEC) standard wiring practices to install and operate the Series 998. Failure to do so could result in such damage, and/or injury or death. NOTE: Sketch in your application on this page or a copy of it. See wiring examples in this chapter and in the Appendix. Figure 2.7 Wiring notes.
Channel A Input Wiring NOTE: Using a grounded thermocouple for both input 1 and input 2 can cause ground loop problems. Figure 2.8a — Thermocouple O N ↑ Thermocouple only 99 _ _ - 1 _ _ _ - _ _ _ _ Universal signal conditioner 99 _ _ - 2 _ _ _ - _ _ _ _ 1 2 3 J, K, T, N, C, E, Pt2, D Dip Switch Setting O N ↑ 1 2 3 + 9 - 10 R, S, B Dip Switch Setting NOTE: Model number 99_ _-1 _ _ _-_ _ _ _ has no input 1 DIP switch. Figure 2.
Channel B Input Wiring NOTE: Using a grounded thermocouple for both input 1 and input 2 can cause ground loop problems. Figure 2.9a — Thermocouple O N ↑ Thermocouple only 99 _ _ - _ 1 _ _ - _ _ _ _ 1 2 3 J, K, T, N, C, E, Pt2, D Dip Switch Setting Universal signal conditioner 99 _ _ - _ 2 _ _ - _ _ _ _ O N ↑ 1 2 3 19 + 20 - R, S, B Dip Switch Setting NOTE: Model number 99_ _-_ 1 _ _-_ _ _ _ has no In1 DIP switch. Figure 2.
Channel A Output Wiring Figure 2.10a — AC Outputs • Dual Electromechanical Relays without Contact Suppression Dual Form A, 2 Amps Off-state impedance: 31MΩ 12 NO 1A External Load L2 13 COM L1 Fuse 14 NO L2 External Load 2A 99 _ _ - _ _ E _ - _ _ _ _ • Dual Solid-state Relay without Contact Suppression Dual Form A, 0.5 Amps Off-state impedance: 31MΩ 99 _ _ - _ _ K _ - _ _ _ _ Figure 2.
Channel B Output Wiring Figure 2.11a — AC Outputs • Dual Electromechanical Relay without Contact Suppression Dual Form A, 2 Amps Off-state impedance: 31MΩ 99 _ _ - _ _ _ E - _ _ _ _ 1B External Load 15 NO 16 COM L2 L1 Fuse 17 NO L2 External Load • Dual Solid-state Relay without Contact Suppression 0.5 Amps Off-state impedance: 31MΩ 2B 99 _ _ - _ _ _ K - _ _ _ _ Figure 2.11b — Dual Switched DC + - Load 1b + Load 2b - 99 _ _ - _ _ _ C - _ _ _ _ 15 16 17 23.5 to 30.
Output 3 Wiring Figure 2.12a — AC Outputs • Solid-state Relay without Contact Suppression 0.5 Amps Off-state impedance: 31MΩ 99 _ _ - _ _ _ _ - K _ _ _ • Solid-state Relay with Contact Suppression 0.5 Amps Off-state impedance: 20KΩ min.
Output 4 Wiring Figure 2.13a — AC Outputs • Solid-state Relay with Contact Suppression 0.5 Amps Off-state impedance: 20KΩ min. • Electromechanical Relay with Contact Suppression (On NO and COM contacts only) Form C, 5 Amps Off-state impedance: 20KΩ min. 99 _ _ - _ _ _ _ - _ B _ _ 99 _ _ - _ _ _ _ - _ D _ _ • Solid-state Relay without Contact Suppression 0.
Notes 2.
Chapter 3 Keys and Displays Upper Display Lower Display Indicates either actual process value for channel A or channel B, the operating prompt values, or error codes. When powering up, the display will be blank for 3 seconds. Red or green, 0.4” (10mm) high, seven-segment, four-digit LED display. Indicates the channel A or channel B set point, or channel B process value, menu prompts, or alarm codes. Red or green, 0.3” (8mm) high, seven-segment, four-digit LED display.
Display Loop Display Key and Loop NOTE: Lower display alternately flashes [`rP`] and lower display value when ramping is in process. On power up, the Series 998 displays the channel A set point value in the lower display and the channel A process value in the upper display and the CH A (channel A) indicator light is on. Press the Display key once to view the channel B set point and process values (CH B will be lit).
Chapter 4 The Setup Menus Navigating the Setup Menus NOTE: Press the Display key ∂ to return to the Display Loop from any point in any menu. To reach the Setup Menus, begin in the Display Loop and press both the Up-arrow > and Down-arrow < keys for three seconds. The Setup Menu prompt [`SEt] will appear in the lower display, and the Input Menu prompt [InPt] will appear in the upper display. The four Setup Menus are: Input [InPt]; Output [OtPt]; Global [GLbL]; and Communications [COM].
Setup-Input Reaching the Input Menu → µ ↓ µ WATL W ↓ µ PROCESS 1A 2A CH A CH B 1B ↓ 2B DISPLAY µ AUTO MAN ↓ MODE µ SERIES 998 ↓ µ ↓ ❸ Select the Input Menu, then press the Mode key µ to step through the prompts. µ ↓ µ ↓ µ ↓ µ ↓ > > > > [```)] [``)0] [`)00] [)000] [DEC1] [DEC1] [DEC1] [DEC1] µ ↓ µ ↓ ❹ Press the Up-arrow key > or the Down-arrow key < to select one of the prompt values. µ ↓ µ ↓ µ ↓ µ ↓ ←µ Figure 4.2 The Input Menu. 4.
Setup-Input Temperature and Relative Humidity When the controller will be used to measure temperature and relative humidity, channel A is designated as the temperature channel and channel B is the humidity channel. Any sensor type may be used for either channel A or B. This includes thermocouples, RTDs or process inputs that have been properly scaled to represent a temperature. Below are the three methods for measuring relative humidity with the Series 998.
Setup-Input Rotronic Model H260 Capacitive Relative Humidity Sensor With the Rotronic configuration, channel A is used to measure temperature and channel B must be a process input with the Input 2 Linearization prompt [Lin2] set to [H260]. The Series 998 provides temperature compensation for the Rotronic sensor. NOTE: See Input 2 Linearization [Lin2] in this chapter.
Setup-Input Input Prompts NOTE: Decimal points may not always be in the position specified below, depending on the the settings in the Decimal 1 [dEC1] parameter in the Input Menu. [`In1] When you are in the Setup menus, the Series 998 displays the menu selection ( [InPt], [OtPt], [GLbL] or [COM] ) in the upper display, and [`SEt] in the lower display. The Up-arrow > or Down-arrow < key selects another menu.
Setup-Input If ↓ [`In1] Input 1 continued from previous page. Default ↓ Input 1 DIP O N ↑ 1 2 3 RTD RTD(0.1°) [`rtd] [`r†d] [`In1] [`In1] 4-20mA 0-20mA RTD Input 1 DIP O N ↑ 1 2 3 0-5VÎ 1-5VÎ 0-10VÎ (dc) [4-20] [0-20] [`0-5] [`1-5] [0-10] [`In1] [`In1] [`In1] [`In1] [`In1] process [dEC1] Decimal 1 Select the decimal point location for process type channel A data.
Setup-Input [`rL1] Range Low 1 and Range High 1 [`rH1] Select the low and high limits for channel A. These prompts limit the adjustment range for the set points. The default values are the same as the limits of the sensor you selected by setting the input 1 DIP switch and selecting a value for Input 1 [`In1]. NOTE: These values do not affect the low or the high set point limit for process alarms. • Process inputs are scaled by these values.
Setup-Input [`rL1] [`rH1] Range Low 1 and Range High 1 continued from previous page. NOTE: These values do not affect the low or the high set point limit for process alarms.
Setup-Input [rtd1] RTD Calibration Curve 1 Select the calibration curve for the channel A RTD. The RTD input uses either the European (DIN, 0.003850Ω/Ω/°C) or the Japanese (JIS, 0.003916Ω/Ω/°C) linearization standard. [rtd1] This prompt appears only if you have set [`In1] to [`rtd] or [`r†d]. [Ftr1] Default ↓ [`din] [`JIS] [rtd1] [rtd1] Software Filter 1 Select the filter time constant, in seconds, for channel A. This smooths a rapidly changing input signal for display or control purposes.
Setup-Input [`In2] Input 2 Select sensor type for channel B. This selection must match the sensor type connected to terminals 18, 19 and 20. See the Appendix for more information about sensors. ç CAUTION: Changing the value of [`In2] changes most other prompts to the factory default values. Verify the correct sensor type before making a change. Document all settings before changing the input type. Failure to follow this guideline could result in damage to equipment or property.
Setup-Input [dEC2] Decimal 2 Select the decimal point location for channel B data. This prompt, in conjunction with the Range Low and Range High prompts, allows you to format and limit units of measure for channel B. • All prompts with units of measure related to channel B will display in the selected decimal format. • This affects propbands, alarm set points, process set points, calibration offsets, deadbands and ranges. [dEC2] This prompt appears only if [`In2] is set to a process input.
Setup-Input Default [`rL2] [`rH2] Range Low 2 and Range High 2 continued from previous page. NOTE: These values do not affect the low or the high set point limit for process alarms.
Setup-Input [CAL2] Calibration Offset 2 Offset the channel B signal by a positive or negative value. This allows you to compensate for lead resistance, sensor errors or other factors. [CAL2] This prompt appears only if [`In2] is not set to [``no].
Setup-Input [Ftr2] Software Filter 2 Select the filter time constant, in seconds, for channel B. This smooths a rapidly changing input signal for display or control purposes. • Select a positive value to filter only the display. • Select a negative value to filter the input signal. • Set the value to [```0] to disable the filter. [Ftr2] This prompts appears only if [`In2] is not set to [``no].
Notes Setup Menus, Chapter 4 WATLOW Series 998 User’s Manual 4.
→ [OtPt] Output Menu Setup-Output µ Reaching the Output Menu µ µ [Inpt] [Otpt] [GLbl] [COM] [`SEt] Input Menu p. 4.2 [`SEt] Output Menu p. 4.16 [`SEt] Global Menu p. 4.32 [`SEt] Communications Menu p. 4.38 ❷ Press the Up-arrow key > to select one of the Setup Menus. µ µ µ µ [`AL3] [`AL3] [`AL3] µ [`Al3] *Output 3 [Ot1b] *Alarm 3 ? ↓ µ [HYs3] *Hysteresis 3 ? µ µ µ ↓ µ ↓ µ ↓ µ [SIl3] *Silencing 3 → ↓ µ ↓ µ ↓ µ ↓ *Prompts may not appear, depending on controller configuration.
Setup-Output NOTE: Decimal points may not always be in the position specified below, depending on the the setting of Decimal 1 [deC1] in the Input Menu. [Ot1A] Output Prompts When you are in the Setup menus, the Series 998 displays the menu selection ( [InPt], [OtPt], [GLbL] or [COM] ) in the upper display, and [`SEt] in the lower display. The Up-arrow > or Down-arrow < key selects another menu. Press the Mode key µ to display the first prompt in the lower display and its value in the upper display.
Setup-Output [HY1A] Hysteresis 1A Select the switching hysteresis for output 1A. This determines the change in temperature or process units needed to turn the output from full on to full off. [HY1A] This prompt does not appear if output 1 is a process output.
Setup-Output [Ot2A] Output 2A Set the way that output 2A will respond to a difference between the set point and an input variable. • [``Ht] select reverse action, so that output 2A responds when the input signal is less than the set point. This prompt only appears if [Ot1A] is set to [``CL]. • [``CL] select direct action, so that output 2A responds when the input signal is more than the set point. This prompt only appears if [Ot1A] is set to [``Ht].
Setup-Output [HY2A] Hysteresis 2A Select the switching hysteresis for output 2A. This determines the change in temperature or process units needed to turn the output from full off to full on. [HY2A] This prompt does not appear if output 2 is a process output.
Setup-Output [Ot1b] Output 1B Set the way that output 1B will respond to a difference between the set point and an input variable. • [``Ht] select reverse action, so that output 1B responds when the input signal is less than the set point. • [``CL] select direct action, so that output 1B responds when the input signal is more than the set point. [Ot1b] This prompt always appears.
Setup-Output [Ot2b] Output 2B Set the way that output 2B will respond to a difference between the set point and an input variable. • [``Ht] select reverse action, so that output 2B responds when the input signal is less than the set point. • [``CL] select direct action, so that output 2B responds when the input signal is more than the set point. [Ot2b] This prompt appears only if channel B output is something other than a process output (99__-___F-____).
Setup-Output [Prcb] Process B Select the process range for output B. [Prcb] This prompt appears only on controllers equipped with output B process hardware (99__-___F-____). Default ↓ [`Ot3] 4-20mA 0-20mA 0-5VÎ 1-5VÎ 0-10VÎ (dc) [4-20] [0-20] [`0-5] [`1-5] [0-10] [Prcb] [Prcb] [Prcb] [Prcb] [Prcb] Output 3 Set the alarm type for output 3. • [`AL3] to de-energize output during alarm condition. • [AL3n] to energize output during alarm condition.
Setup-Output [`AL3] Alarm 3 Select the alarm channel and type for alarm 3. Select the trigger points for the alarm with the [A3LO] and [A3HI] settings in the System Menu [`SYS]. NOTE: See Chapter 7 for more information on alarms. • [`PrA] uses the process signal from channel A. Changing the set point does not change the alarm response. • [`dEA] uses a deviation from the channel A signal. Changing the set point changes the alarm response.
Setup-Output [HYS3] Hysteresis 3 Select the switching hysteresis for alarm 3. This determines the change in temperature or process units needed to turn the output from full off to full on. • If the input referenced by [`AL3] is set to [`r†d] the range is affected as listed below. NOTE: See Chapter 7 for more information on alarms. [HYS3] This prompt appears only on controllers equipped with output 3 hardware (not 99__-____-A___) and with [`Ot3] (Output Menu) set to [`AL3] or [AL3n].
Setup-Output [LAt3] Latching 3 Select whether alarm 3 will be latching or non-latching. A latching alarm [`LAt] must be turned off manually. A non-latching alarm [`nLA] turns off when an alarm condition no longer exists. NOTE: See Chapter 7 for more information on alarms. [LAt3] This prompt appears only on controllers equipped with output 3 hardware (99__-____-B___, or 99__-____-C___, or 99__-____-K___ or 99______-J___) and with [`Ot3] (Output Menu) set to [`AL3] or [AL3n].
Setup-Output [`Ot4] Output 4 Set the alarm type for output 4. • [`AL4] de-energizes output 4 in an alarm condition. • [AL4n] energizes output 4 in an alarm condition. [`Ot4] This prompt appears only on controllers equipped with output 4 hardware for a relay (99__-____-_B__, or 99__-____-_D__, or 99__-____-_E__ or 99__-____-__K__) or switched dc (99__-____-_C__). Default [`AL4] ↓ [`AL4] [AL4n] [``no] [`Ot4] [`Ot4] [`Ot4] Alarm 4 Select the alarm channel and type for alarm 4.
Setup-Output [HYS4] Hysteresis 4 Select the switching hysteresis for alarm 4. This determines the change in temperature or process units needed to turn the output from full off to full on. • If the input referenced by [`AL4] is set to [`r†d] the range is affected as listed below.
Setup-Output [SIL4] Silencing 4 Select silencing to inhibit alarm 4 on startup and to allow the operator to reset the alarm output, not the visual display. NOTE: See Chapter 7 for more information on alarms. • Silencing disables the alarm until the signal is between [A4LO] and [A4HI].
Setup-Output [Prc3] Process 3 Select the range for the retransmit signal at output 3. NOTE: See Chapter 8 for more information on retransmit. [Prc3] This prompt appears only on controllers equipped with output 3 retransmit hardware (99__-____-M___ or 99__-____-N___) and with [Aout] not set to [``no].
Setup-Output [`ArH] Retransmit High Limit Select the high limit for the retransmit signal at output 3. • The default value is equal to [`rH1] or [`rH2] (in the Input Menu) depending on whether [Aout] is set to [PrcA] or [Prcb]. [`ArH] This prompt appears only on controllers equipped with retransmit hardware (99__-____-M___ or 99__-____-N___) and with [Aout] not set to [``no]. [`ArL] … [9999] [`ArH] [ACAL] [`ArH] Retransmit Calibration Offset Select an offset value for the retransmit signal at output 3.
Setup-Global Reaching the Global Menu → µ ❶ Begin in the Display Loop, and press the Up-arrow > and Downarrow < keys simultaneously for three seconds to reach the Setup menus. ↓ µ ↓ µ ↓ > > > > [Inpt] [Otpt] [GLbl] [COM] [`SEt] Input Menu p. 4.2 [`SEt] Output Menu p. 4.16 [`SEt] [`SEt] Global Menu p. 4.32 Communications Menu p. 4.38 µ ↓ µ ↓ µ ↓ ❷ Press the Up-arrow key > to select one of the Setup menus. µ ↓ µ ↓ ❸ Press the Mode key µ to step through the prompts.
Setup-Global Global Prompts NOTE: Decimal points may not always be in the position specified below, depending on the Decimal 1 [dEC1] setting in the Input Menu. [`C_F] When you are in the Setup menus, the Series 998 displays the menu selection ( [InPt], [OtPt], [GLbL] or [COM] ) in the upper display, and [`SEt] in the lower display. The Up-arrow > or Down-arrow key < selects another menu. Press the Mode key µ to display the first prompt in the lower display and its value in the upper display.
Setup-Global [`Err] Error Latching Select whether input errors will be latching or non-latching. • [`nLA] Non-latching errors turn off when there is no error condition. NOTE: See Chapter 7 for more information on errors . [`Ei1] • [`LAt] Latching errors must be turned off manually. [`Err] This prompt always appears. Default ↓ [`nLA] [`LAt] [`Err] [`Err] Event Input 1 Select the effect of closing the event input 1 switch. • [``no] disables event input 1. • [`LOC] locks out the front panel keys.
Setup-Global [Anun] Annunciator Select whether alarm messages will flash in the lower display. [Anun] This prompt always appears. Default ↓ [AtSP] [``On] [`OFF] [Anun] [Anun] Auto-tune Set Point Select the percentage at which the controller will auto-tune the current control set point. [AtSP] This prompt always appears. Default ↓ [``50] … [``90] … [`150] % [AtSP] [rP`A] [AtSP] [AtSP] Ramping Function for Channel A Select when channel A will enter ramping mode.
Setup-Global [Rt`A] Ramp Rate for Channel A Set the rate of heating for channel A. [rt`A] This prompt appears when [rP`A] is set to [Strt] or [StPt]. Default ↓ [```0] … [`100] … [9999] [rt`A] [RP`b] [rt`A] degrees/minute [rt`A] Ramping Function for Channel B Select when channel B will enter ramping mode. NOTE: Lower display alternately flashes {`rp`} and lower display value when ramping is in process. • [Strt] Activates ramping on power up only.
Notes Setup Menus, Chapter 4 WATLOW Series 998 User’s Manual 4.
Setup-Communications Reaching the Communications Menu ❶ Begin in the Display Loop, and press the Up-arrow > and Down-arrow < keys simultaneously for three seconds to reach the Setup Menus. → µ ↓ µ ↓ > > > > [Inpt] [Otpt] [GLbl] [COM] [`SEt] Input Menu p. 4.2 [`SEt] Output Menu p. 4.16 [`SEt] Global Menu p. 4.32 [`SEt] Communications Menu p. 4.38 ❷ Press the Up-arrow key > to select one of the Setup Menus.
Setup-Communications Communications Prompts When you are in the Setup menus, the Series 998 displays the menu selection ( [InPt], [OtPt], [GLbL] or [COM] ) in the upper display, and [`SEt] in the lower display. The Up-arrow > or Down-arrow key < selects another menu. Press the Mode key µ to display the first prompt in the lower display and its value in the upper display. Use the Up-arrow and Down-arrow keys to change the value in the upper display.
Setup-Communications [Prot] Protocol Type Select the communications protocol. • [FULL] selects ANSI X3.28 2.2 - A.3. • [``on] selects XON/XOFF. [Prot] This prompt appears only on controllers equipped with communications hardware (99__-____-_R__ or 99__-____-_S__). [Addr] Default ↓ [FULL] [``On] [Prot] [Prot] Address Select an address for the controller. The computer will use this address when communicating with this controller.
Chapter 5 The Operation Menus Navigating the Operation Menus NOTE: Press the Display key ∂ to return to the Display Loop from any point in any menu. To reach the Operation Menus, begin in the Display Loop and press the Mode key µ. Depending on the controller configuration, either the Set Point 2A prompt [SP2A], the Set Point 2B prompt [SP2B] or the Operation Menu prompt [OPEr] will appear in the lower display. The three Operation Menus are: System [`SYS]; PID A [PidA]; and PID B [Pidb].
Operation-System Reaching the System Menu ↓ µ ↓ µ ↓ WATL W [`SYS] → PROCESS [OPEr] 1A 2A 1B CH A CH B µ ↓ AUTO MAN µ MODE ↓ SERIES 998 µ ↓ ❸ Select the System Menu, then press the Mode key to step through the prompts. µ ↓ µ ↓ µ ↓ … … > µ > [-999] [-998] [-997] … [```0] [A3LO] [A3LO] [A3LO] ? [SP2b] *Set Point 2B [`SYS] System Menu [OPEr] Operation Menus ↓ µ ? Enter your settings, from the controller’s upper display. [Ei1S] *Event Input 1 Status (page 5.
Operation-System System Prompts NOTE: Decimal points may not always be in the position specified below, depending on the Decimal 1 [dEC1] and Decimal 2 [dEC2] settings in the Input Menu. [SP2A] After you step past the Set Point 2A prompt [SP2A] and the Set Point 2B prompt [SP2b] to the Operation menus, the Series 998 displays the menu selection ( [`SYS], [PidA] or [PidB] ) in the upper display and [OPEr] in the lower display. The Up-arrow > or Down-arrow key < selects another menu.
Operation-System [Ei1S] Event Input 1 Status Indicates whether the event input 1 circuit is energized, [CLOS], or de-energized, [OPEn]. This is a read-only prompt. [Ei1S] This prompt appears only if [`Ei1] (Global Menu) is set to something other than [``no]. [Ot3S] [OpEn] [CLOS] [Ei1S] [Ei1S] Output 3 Status Indicates whether the output 3 circuit is energized, [CLOS], or deenergized, [OPEn]. This is a read-only prompt.
Operation-System [A3LO] Alarm 3 Low Select the low trigger value for the output 3 alarm. [A3LO] This prompt appears only if [`Ot3] (Output Menu) is set to [`AL3] or [AL3n]. If ↓ Default ↓ lowest [`PrA] or [`prb] [`AL3] [`AL3] (Output Menu) value of … [`rL1] range (Input Menu) [`dEA] or [`dEb] `AL3] … [A3HI] value of sensor (or [`rL2] ) [A3LO] … [```0] [-999] [`AL3] [A3LO] [A3LO] (Output Menu) [A3HI] Alarm 3 High Select the high trigger value for the output 3 alarm.
Operation-System [A4LO] Alarm 4 Low Select the low trigger value for the output 4 alarm. [A4LO] This prompt appears only if [`Ot4] (Output Menu) is set to [`AL4] or [AL4n]. If ↓ Default ↓ lowest [`PrA] or [`prb] [`AL4] [`AL4] (Output Menu) value of … [`rL1] range (Input Menu) [`dEA] or [`dEb] [`AL4] … [A4HI] value of sensor (or [`rL2] ) … [-999] [`AL4] [A4LO] [```0] [A4LO] [A4LO] (Output Menu) [A4HI] Alarm 4 High Select the high trigger value for the output 4 alarm.
Operation-System [`AUt] Auto-tune Initiate an auto-tune. NOTE: For more information on auto-tune see Chapter 7. Operation Menus, Chapter 5 [`AUt] This prompt always appears. Default ↓ [`OFF] [PidA] [Pidb] [`AUt] [`AUt] [`AUt] WATLOW Series 998 User’s Manual 5.
Operation-PID A Reaching the PID Menus ❶ Begin in the Display Loop, and press the Mode key µ to reach the Set Point 2A prompt [SP2A], the Set Point 2B prompt [SP2B] or the Operation Menu [OPEr]. → µ ↓ µ ↓ µ ↓ µ [`998] ↓ [SP2A] Set Point 2A µ [`998] µ ↓ [SP2B] Set Point 2B µ > µ > ↓ > [`SYS] [PIdA] [PIdb] [OPEr] [OPEr] [OPEr] System Menu p. 5.2 PID A Menu p. 5.8 PID B Menu p. 5.
Operation-PID A NOTE: Decimal points may not always be in the position specified below, depending on the Decimal 1 [dEC1] settings in the Input Menu. PID A Prompts After you step past the Set Point 2A prompt [SP2A] and the Set Point 2B prompt [SP2b] to the Operation menus, the Series 998 displays the menu selection ( [`SYS], [PidA] or [PidB] ) in the upper display and [OPEr] in the lower display. The Up-arrow > or Down-arrow key < selects another menu.
Operation-PID A [rE1A] Reset, Output 1A or 2A [rE2A] Adjust the control action to eliminate the offset or droop between the set point and the actual process temperature for PID channel A outputs. When set to [```0] reset is disabled. [rE1A] This prompt appears only if [`dFL] (Calibration Menu) is set to [``US] and [Pb1A] is not set to [```0]. Default ↓ [`)00] … [9(99] [rE1a] repeats/min.
Operation-PID A [rA1A] Rate, Output 1A or 2A [rA2A] Adjust the rate to eliminate overshoot on startup or after the set point changes. The rate setting will not influence the percent power if the process temperature is more than twice the proportional band from the set point. When set to [```0] rate is disabled. [rA1A] This prompt appears only if [`dfL] (Calibration Menu) is set to [``US] and [Pb1A] is set higher than [```0]. Default ↓ [`)00] … [`(99] [rA1A] min.
Operation-PID A [Ct1A] Cycle Time, Output 1A or 2A [Ct2A] Select the time, in seconds, of a complete on/off cycle. [Ct1A] This prompt does not appear if the output is a process output or [Pb1A] is not set higher than [```0]. If ↓ Default ↓ [``%0] … [`1)0] … [99(9] mechanical relay [Ct1A] [Ct1A] min. [Ct1A] outputs [brSt] … [``!0] … [99(9] open collector or solid-state relay outputs [db`A] [Ct1A] [Ct1A] min.
Operation-PID B Reaching the PID Menus ❶ Begin in the Display Loop, and press the Mode key µ to reach the Set Point 2A prompt [SP2A], the Set Point 2B prompt [SP2B] or the Operation Menu [OPEr]. → µ ↓ µ ↓ µ ↓ [`998] [SP2A] Set Point 2A µ µ ↓ [`998] [SP2B] Set Point 2B µ ↓ > µ > > µ [`SYS] [PIdA] [PIdb] ↓ [OPEr] [OPEr] [OPEr] µ System Menu p. 5.2 PID A Menu p. 5.8 PID B Menu p. 5.
Operation-PID B PID B Prompts NOTE: Decimal points may not always be in the position specified below depending on the the settings in the Decimal 1 [dEC1] parameter in the Input Menu. After you step past the Set Point 2A prompt [SP2A] and the Set Point 2B prompt [SP2b] to the Operation menus, the Series 998 displays the menu selection ( [`SYS], [PidA] or [PidB] ) in the upper display and [OPEr] in the lower display. The Up-arrow > or Down-arrow key < selects another menu.
Operation-PID B [rE1b] Reset, Output 1B or 2B [rE2b] Adjust the control action to eliminate the offset or droop between the set point and the actual process temperature for PID channel B outputs. When set to [```0] reset is disabled. [rE1B] This prompt appears only if [`dFL] (Calibration Menu) is set to [``US] and [Pb1b] is not set to [```0]. Default ↓ [`)00] … [9(99] repeats / min.
Operation-PID B [rA1b] Rate, Output 1B or 2B [rA2b] Adjust the rate to eliminate overshoot on startup or after the set point changes. The rate setting will not influence the percent power if the process temperature is more than twice the proportional band from the set point. When set to [```0] rate is disabled. [rA1b] This prompt appears only if [`dfL] (Calibration Menu) is set to [``US] and [Pb1b] is set higher than [```0]. Default ↓ [`)00] … [`(99] min.
Operation-PID B [Ct1b] Cycle Time, Output 1B or 2B [Ct2b] Select the time, in seconds, of a complete on/off cycle. [Ct1A] This prompt does not appear if the output is a process output or [Pb1A] is not set higher than [```0]. If ↓ Default ↓ [``%0] … [`1)0] … [99(9] mechanical relay [Ct1b] [Ct1b] min. [Ct1b] outputs [brSt] … [``!0] … [99(9] open collector or solid-state relay outputs [db`b] [Ct1b] [Ct1b] min.
Notes 5.
Chapter 6 The Factory Menus Navigating the Factory Menus NOTE: The Factory Menus will not appear if the hardware lockout DIP is set to on. See Chapter 1 for more information. NOTE: The Factory Menus can only be entered when the Setup prompt [`SEt] is displayed. NOTE: Press the Display key ∂ to return to the Display Loop from any point in any menu. To reach the Factory menus, begin in the Display Loop and press the Uparrow > and Down-arrow < keys together and hold for three seconds.
Factory-Panel Lockout Reaching the Panel Lockout Menu → WATL W [PLOC] [Fcty] ↓ ? µ [`LOC] ↓ ? µ [`SYS] PROCESS [Fcty] 1A 2A CH A CH B 1B 2B DISPLAY AUTO MAN MODE SERIES 998 ❸ Select the Panel Lockout Menu [PLOC], then press µ to step through the prompts.
Factory-Panel Lockout Panel Lockout Prompts When you are in the Factory menus, the Series 998 displays the menu selection ( [PLOC], [diAg] or [`CAL] ) in the upper display and [FctY] in the lower display. The Up-arrow > or Down-arrow key < selects another menu. Press the Mode key µ to display the first prompt in the lower display and its value in the upper display. Use the Up-arrow and Down-arrow keys to change the value in the upper display.
Factory-Panel Lockout [`SYS] System Menu Lockout Select the lockout level for the System Menu. Set the lockout to no lockout [none], read only [read] or full lockout [FULL]. [`LOC] This prompt always appears. [PidA] Default ↓ [none] [read] [FULL] [`SYS] [`SYS] [`SYS] PID A Menu Lockout Select the lockout level for the PID A Menu. Set the lockout to no lockout [none], read only [read] or full lockout [FULL]. [PidA] This prompt always appears.
Factory-Panel Lockout [InPt] Input Menu Lockout Select the lockout level for the Input Menu. Set the lockout to no lockout [none], read only [read] or full lockout [FULL]. [InPt] This prompt always appears. [OtPt] Default ↓ [none] [read] [FULL] [InPt] [InPt] [InPt] Output Menu Lockout Select the lockout level for the Output Menu. Set the lockout to no lockout [none], read only [read] or full lockout [FULL]. [OtPt] This prompt always appears.
Factory-Panel Lockout [COM] Communications Menu Lockout Select the lockout level for the Communications Menu. Set the lockout to no lockout [none], read only [read] or full lockout [FULL]. [COM] This prompt appears only if the controller is equipped with communications hardware (99__- ____- _R__ or 99__- ____- _S__). [diAg] Default ↓ [none] [read] [FULL] [COM] [COM] [COM] Diagnostics Menu Lockout Select the lockout level for the Diagnostics Menu.
Notes Factory Menus, Chapter 6 WATLOW Series 998 User’s Manual 6.
Factory-Diagnostics Reaching the Diagnostics Menu → µ ❶ Press the Up-arrow > and Down-arrow < keys together and hold until the [`SEt] prompt appears in the lower display. Press and hold again until the [Fcty] prompt appears in the lower display. > > > [PLOC] [diAg] [`CAL] [Fcty] Panel Lockout Menu p. 6.2 [Fcty] [Fcty] Diagnostics Calibration Menu Menu p. 6.8 p. 6.
Factory-Diagnostics [DAte] Factory Ship Date Shows the date that the final factory control test was performed. The first two digits represent the week as numbered from [01--] to [52--]. The second two digits represent the year [--94], [--95], etc… [dAtE] This prompt always appears. [sOft] Software Revision Shows the controller’s software revision code. This letter should match the software revision code on the cover of the manual that came with your controller; [```n] and W998-XUMN Rev N02.
Factory-Diagnostics [acnt] [`gnd] [cnt1] [cnt2] Factory Use Only [ity1] [ity2] Inputs 1 and 2 Module Types These prompts are used only at the factory. [Acnt] [`gnd] [cnt1] [cnt2] These prompts always appear. Display which input module is installed in the controller. Please document this value before contacting the factory for technical assistance.
Factory-Diagnostics [Oty1] [Oty2] [Oty3] [Oty4] Outputs 1, 2, 3 and 4 Module Types Display the controller’s output module. Please document this value before contacting the factory for technical assistance. Output Types • [none] no output module (A) • [SSr1] 0.5A solid-state relay (K) • [SS1S] 0.
Factory-Diagnostics [disp] Test Displays Runs a brief test of the controller’s displays and LEDs. To run the test, scroll through the Diagnostics Menu until [disp] is shown in the lower display. Use the Up-arrow key > or Down-arrow key < to select [`YES] from the upper display and press the mode key µ. The controller will run pattern tests, blink all the LEDs on and off, and end with the model number in both displays. [diSP] This prompt always appears.
Notes Factory Menus, Chapter 6 WATLOW Series 998 User’s Manual 6.
Factory-Calibration Reaching the Calibration Menu ❶ Enter the Factory Menu again by pressing the Up-arrow > and Down-arrow < keys simultaneously for three seconds to enter the Setup Menu [`SEt], and an additional three seconds to enter the Factory Menu [Fcty].
Factory-Calibration [`rst] Restore Restores the original factory calibration values. This is a simple way to recover if you make a mistake calibrating the controller. [`rSt] This prompt always appears. [`dFL] Default ↓ [``no] [`yes] [`rSt] [`rSt] Default Set the operating parameter defaults to U.S. or international measures. • [``US] (U.S.) sets the controller to °F; rate in minutes; proportional band in degrees or units; and reset in repeats per minute.
Notes 6.
Chapter 7 Tuning, Manual Operation, Alarms and Error Codes Auto-tuning (Heat and/or Cool) The Series 998 can automatically tune the PID parameters for both channel A and channel B to fit the characteristics of your particular system. Only one channel’s PID set can be auto-tuned at a time. Before beginning the auto-tune sequence, make sure the [AtSP] parameter located in the Global Menu is at the proper setting.
Tuning Tuning ç To start auto-tuning: 1. Press the Mode key µ until the [`AUt] prompt appears in the lower display. 2. Use the Up-arrow or Down-arrow key > < to select [`PidA] or [`Pidb] depending on which channel you want to tune. Only one PID set can be auto-tuned at a time. ç CAUTION: If a mechanical relay or contactor is switching power to the load, a longer cycle time may be desirable to minimize wear on the mechanical components. Typical life of a mechanical relay is 100,000 cycles. 3.
Auto/Manual Operation and [``rA] or [``dE] are inoperative, and the 998 functions as a simple on/off control.) The [``HY] (hysterisis) prompt determines the switching differential value. 3. Reset/Integral Adjustment: Gradually increase [``rE] or decrease [``It] until the upper display process value begins to oscillate or “hunt.” Then slowly decrease [``rE] or increase [``It] until the upper display stabilizes again near set point. 4. Cycle Time Adjustment: Set [``Ct] as required.
Alarms in manual operation. Note: It cannot be determined which channel is in the manual mode when both CH A and CH B lights are on. When the Auto/Manual light is off, the channel is in automatic operation. When the Auto/Manual key is pressed once the Auto/Manual light will flash. Press the key again within five seconds to complete the change in operation. When a sensor fails, the channel associated with the failed sensor switches from automatic to manual operation.
Alarms A flashing lower display indicates an alarm state. Note: If the [Anun] parameter in the Global Menu is set to [`OFF] the lower display will not flash and there will be no indication of an alarm state on the front panel. Once you’ve configured the outputs as alarms, enter the Output Menu again and select the [`AL3] and/or [`AL4] prompt respectively. These prompts select the type of alarm, process or deviation. Each may be independently set low and high.
Error Codes Error Code E1 and E2 Messages Four dashes, [----], in the upper display indicate a Series 998 error. The associated channel goes to 0% output. To view the error code press the Auto/Man key once. The upper display shows the error code for five seconds before returning to the [----] display. [E1`1] or [E2`1]: A/D underflow error The input 1 or 2 A/D circuit is underrange. An open or reversed polarity sensor is the most likely cause.
Error Codes Error Code Actions Error codes [`Er3], [`Er4], [`Er5] or [`Er9] will result in these conditions • The control is in Auto operation with both control outputs off. • The alarm outputs are in their alarm state (de-energerzed with the indicator light on). • The lower display is blank. • The upper display indicates the error code. • All keys are inactive. • [`Er5] resets all Setup Menu prompts to their default values.
Error Codes To clear an error code: • If [`Err] is set to [`nLA], the error code should clear once the problem is corrected. • If [`Err] is set to [`LAt], correct the problem and cycle power. You can also clear the error by pressing the Up-arror or Down-arrow keys > < to enter the Setup Menu, then press the Display key ∂. 7.
Chapter 8 Applications This chapter details many of the 998 features unique to Watlow controls. Some of this material is advanced and requires previous background or experience. What we will cover in this chapter: Standard Features • Burst fired, zero cross output • Dead Band • Retransmit • Transmitter Power Supply Burst Fired Zero Cross Output ç CAUTION: Burst fired operation requires ac power supplied to the Series 998.
Retransmit Retransmit When output 3 is ordered as a process retransmit output, channel A set point or process value (input 1) or channel B set point or process value (input 2) can be configured for retransmit. For accurate readings when retransmitting to a chart recorder, the retransmit can be scaled and offset separate from the input settings. When model number 99 _ _-_ _ _ _-M _ _ _ is ordered, a process range of 0-20mA or 4-20mA can be selected at the [Prc3] prompt in the Output Menu.
Misc. Features Dead Band The dead band prompts, [db`A] and [db`b], determine the amount of interaction between heat (reverse acting) and cool (direct acting) control outputs for channel A and B respectively. Dead band directly offsets the cool control output set point. With a positive dead band, both control outputs will never be on at the same time.
Notes 8.
Warranty/Returns Total Customer Satisfaction Warranty 3 Year Warranty The Watlow Series 998 is warranted to be free of defects in material and workmanship for 36 months after delivery to the first purchaser for use, providing that the units have not been misapplied. Since Watlow has no control over their use, and sometimes misuse, we cannot guarantee against failure.
Glossary, A-J annunciator — A visual display that uses pilot lights to indicate the former or existing condition of several items in a system. burst fire — A power control method that repeatedly turns on and off full ac cycles. Also called zero-cross fire, it switches close to the zero-voltage point of the ac sine wave. Variable-time-base burst fire selectively holds or transits ac cycles to achieve the desired power level. See zero cross.
Glossary, N-R mocouple circuit held at a stable, known temperature (cold junction). Standard reference temperature is 32°F (0°C). NEMA 4X — A NEMA specification for determining resistance to moisture infiltration. This rating certifies the controller as washable and corrosion resistant. on/off controller — A temperature controller that operates in either full on or full off modes. open loop — A control system with no sensory feedback.
Glossary, R-Z RTD — See resistance temperature detector. thermal system — A regulated environment that consists of a heat source, heat transfer medium or load, sensing device and a control instrument. thermocouple (t/c) — A temperature sensing device made by joining two dissimilar metals. This junction produces an electrical voltage in proportion to the difference in temperature between the hot junction (sensing junction) and the lead wire connection to the instrument (cold junction).
Index 998 Index % out LED 3.1 0-20MA or 4-20MA process 2.8, 2.9, 2.10, 2.11 0-5VÎ, 1-5VÎ, 0-10VÎ (dc) process 2.8, 2.9, 2.10, 2.11 1A, 2A, 1B, 2B indicator lights 3.1 A ac outputs 2.10, 2.11, 2.12, 2.13 address of controller 4.40 alarm 3 4.24 alarm 3 high 5.5 alarm 3 low 5.5 alarm 4 4.27 alarm 4 high 5.6 alarm 4 low 5.6 alarm jumper 7.4 - 7.5 alarms 7.4 - 7.5 alarm silencing 7.5 altitude compensation 4.14 ambient temperature 6.9 analog output 4.29 annunciator 4.35 auto/man key 3.1 auto/manual operation 7.
Index proportional band, output 1A proportional band, output 1B proportional band, output 2A proportional band, output 2B protocol type 4.40 5.9 5.14 5.9 5.14 R ramping function, channel A 4.35 ramping function, channel B 4.36 ramp rate, channel A 4.36 ramp rate, channel B 4.36 range high 1 4.7 - 4.8 range low 1 4.7 - 4.8 range high 2 4.11 - 4.12 range low 2 4.11 - 4.12 rate/derivative adjustment 7.3 rate, output 1A or 2A 5.11 rate, output 1B or 2B 5.16 reset/integral adjustment 7.
Prompt Index Index A F [A3HI] alarm 3 high 5.5 [A3LO] alarm 3 low 5.5 [A4HI] alarm 4 high 5.6 [A4LO] alarm 4 low 5.6 [ACAL] retransmit calibration offset 4.31 [Addr] address 4.40 [`AL3] alarm 3 4.24 [`AL4] alarm 4 4.27 [`ALt] altitide compensation 4.14 [Amb] ambient temperature 6.9 [Anun] annunciator 4.35 [Aout] analog output 4.29 [`ArH] retransmit high limit 4.31 [`ArL] retransmit low limit 4.30 [AtSP] auto-tune set point 4.35 [`AUt] auto-tune 5.7 [FaIl] failure mode 4.33 [Ftr1] software filter 1 4.
Specifications Specifications — (1908) Control Mode • Dual input, six output, optional retransmit of set point or process variable. • Programmable direct- and reverse-acting control outputs per channel. • One-step auto-tuning. Agency Approvals • UL #873, c-UL File #43684. • NEMA 4X (IP65) front panel. • 89/336/EEC Electromagnetic Compatibility Directive: • EN 55011: 1991 Group 1, Class A Emissions. • EN 50082-2: 1994 Immunity. • 73/23/EEC Low Voltage Directive: • EN 61010-1: 1993 Safety.
Ordering Information — (1083) To order, complete the code number with the information below: Model Number 99_D-____-____ Series 998 Power Supply & Mounting 6 = 24 to 28Vı (ac/dc) nominal, vertical mounting 7 = 24 to 28Vı (ac/dc) nominal, horizontal mounting 8 = 100 to 240Vı (ac/dc) nominal, vertical mounting 9 = 100 to 240Vı (ac/dc) nominal, horizontal mounting Software D = Dual-channel hardware Channel A Input 1 = Basic thermocouple signal conditioner (excluding Type B, R, and S) 2 = Universal signal con
DeclarationofConformity Series996,997,998,999 WATLOWCONTROLS 1241 Bundy Boulevard Winona, Minnesota 55987 USA Declares that the following product: English Designation: Series 996, 997, 998, 999 Model Number(s): 9 9 (6 7 8 or 9) (Any letter) - (1 or 2) (1 or 2) (C E F or K) (CEFor K) - (A B C J K M N or T) (A B C D E K R S or T) (Any two letters) Classification: Control, Installation Category II, Polution Degree II Rated Voltage: 100 to 240V~ or 24 to 28V‡ Rated Frequency: 50/60 Hz Rated Power Consumption: 1
Notes Appendix WATLOW Series 998 User’s Manual A.
Watlow Series 998 User’s Manual Watlow Controls, 1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580 Phone: (507) 454-5300, Fax: (507) 452-4507 http://www.watlow.
