DETCON INCORPORATED Model 440 Remote Display System Operator Instruction Manual February 7, 2005, Document # 2969, Rev # 1 ¤ Detcon Incorporated 3200 Research Forest Dr, The Woodlands, TX 77381 Phone 281.367.4100 • Fax 281.292.
Model 440-RD Operator Manual Rev.
Table of Contents 1.0 Description.................................................................................................................................................1 2.0 System Operation.......................................................................................................................................2 3.0 Specifications.............................................................................................................................................3 4.
Model 440-RD Operator Manual Rev.
1.0 Description The Model 440-RD is a read only remote display unit designed to operate with input from Detcon Model 440 Controller. The Model 440-RD must be configured exactly as the Model 440 host controller to function correctly. The system displays real time channel information on a backlit LCD. Displayed information includes channel number, gas type, and gas concentration. It also shows the current Alarm/Fault status via front panel LED indicators.
2.0 System Operation The Model 440-RD receives the data for remote display from the host Model 440 Controller. The system displays current status information on its LCD display, which includes the gas channel #, current reading, gas type, and alarm LED status. SYSTEM OPERATION BLOCK DIAGRAM SCHEMATIC MODEL 440-RD Gas Detection/Alarm System CH1 CH2 CH3 CH4 ALM 1 99 80 45 00 ALM 2 PPM PPM PPM PPM CL2 SO2 H2S NH3 ALM 3 FAULT Input Power 115/230 VAC 11.
3.0 Specifications Capacity Electrical Sensor Inputs Accuracy Outputs Power Input Physical Power Consumption 4 Input Channels Analog 4-20 mA or ± 1% Full Scale Range None 115-230 VAC 11.5-30 VDC Normal: 5 Watts @ 24 VDC Display 1”x5” Backlit LCD Electrical Classification NEMA 4X Dimensions 11”W x 14”H x 6.5”D Operating Temperature Range -40F to +167F -40C to +75C Warranty Two year Model 440-RD Operator Manual Rev. 1.0.
4.0 Installation 4.1 Mounting and Cable Penetrations Securely mount the Model 440 RD enclosure per the mounting dimensions provided in Fig. 1. Provide for suitable conduit/cable entries in the bottom of the enclosure. Keep AC power separate from DC signals in conduit connections and runs. Mounting Holes 5/16 Dia. Figure 2 Mounting Diagram 4.2 Power and I/O Connections Power and I/O connections are made on the Motherboard PCB, which is mounted on the back of the enclosure.
SW2 SW1 PS1 TO FROM J2 External VAC Input PS2 DC POWER SUPPLY VAC ON/OFF 115VAC/220VAC F2 VIN SW4 J8 VDC + VDC - External VDC Input VSS VDC ON/OFF SW3 BATT1 MOTHER BOARD POWER INPUT VIN BATTERY ON/OFF BATT2 VIN SWOV BATTERY RESTORE Figure 3 Power Input Schematic 4.2.3 Serial Connection From Model 440 Controller The serial connection from the Model 440 Controller should be terminated at the RS-485 input terminal of the Model 440-RD motherboard PCB. See Figure 4.
PS1 SW2 SW3 + PS2 VOLTAGE SELECT BATTERY SW1 VAC POWER SWITCH SW4 SW0V EXTERNAL AC IN J2 J8 Battery Restore Switch EXTERNAL DC IN VDC POWER SWITCH JP1 Jumper for RS-485 Shield to Earth Grnd. Figure 4 Mother Board Layout Model 440-RD Operator Manual Rev. 1.0.
Ribbon Cable to LCD ON OFF 1 2 3 4 Figure 5 Control Board Layout Model 440-RD Operator Manual Rev. 1.0.
5.0 Star t-up NOTE: Before applying power, check and make sure that all the wiring connections and external devices are installed correctly. NOTE: Applying power with devices hooked up incorrectly may cause damage to the equipment. 5.1 Power Switch Selections Refer to Figure 6. For AC power, locate the V-SELECT switch (SW2) and select the appropriate voltage setting.
6.0 Remote Display Operation 6.1 Password Protection RS-485 Input for Gas Sensor. SW1 pos 4 - Password Protect Switch part of Control Board ON OFF J7 1 2 3 4 Figure 7 Password Protection SW1 Password protection is accomplished via a switch selection on the backside of the Controller PCB. (Figure 7 SW1.) With Switch 1 position 4 in the ON position, the Controller will be in Password Protected mode. In this mode there is no access to the Menus.
Figure 8 Front Panel User Interface NOTE: The controller automatically times out of Menu Mode and returns to the Main Display after 1 minute of inactivity. While in Menu Mode there are no updates to gas readings. 6.3 Main Display Functions The Main Display is a 1”x 5” backlit LCD which has 4 lines by 24 characters. In normal operation “CH # = XX ppm GAS” will bw displayed. If any channel is in any gas alarm condition, the “CH#” will change to “ALM”.
Menu Flow Chart NORMAL OPERATION MAIN MENU: SET # OF CHANNELS MAIN MENU: SET CHANNEL RANGE MAIN MENU: SET CHANNEL TYPE MAIN MENU: SET CHANNEL ALARMS SET # OF CHANNELS X SET CHANNEL RANGE CHX = ##### CH1 … X SET CHANNEL TYPE CHX = XXXXXXX CH1 … X SET ALARMS CH1 … X CHANNEL MAIN MENU: SET DATE & TIME SET DATE AND TIME MM/DD/YY HH:MM:SS MAIN MENU: 01/02/04 1200 - 1300 TWA #### PK ##### KEY: Up Arrow VIEW TWA & PEAK Down Arrow Enter MAIN MENU: VIEW ALARM RECS ALM: MM/DD/YY CHX- A1 ON HH:MM
6.4.3 Set Channel Type This menu entry allows the selection of the Channel Type for each gas channel input. This is an alpha numeric string that should encompass the units of measure followed by the chemical formula. For example “ppm H2S” or “% LEL”. Use the up and down arrows to find the appropriate alpha numeric selection and then use the ENTER button to select it. Enter the character string as is is expected to be displayed on the Main Display.
6.4.7 View Event Records This menu entry is used to view the recorded and saved Alarm, Fault and Maintenance records for the different gas channels. This data can be viewed on the screen or can be downloaded via the RS-232 port to a PC for graphical presentation. Refer to Section 7.2 on instruction for using the downloading software provided with this controller. 05/06/04 09:00 0000 CH1 ALM1 ON The data is formatted for display. It will report the date, time, record #, CH#, Event type and Event status.
7.0 Options 7.1 Option for Battery Back-up Operation This option provides a nominal 1 hour of battery back-up power to the Gas Detection Alarm System. The battery back-up system consists of two 12 VDC / 0.8 Amp-hour batteries in series, along with the requisite low voltage cut-off circuitry. The batteries may be isolated during exchange or while in long-term storage by using the battery disconnect switch shown in Figure 4.
