Type 3738-20 Electronic Limit Switch with optional integrated solenoid valve for valves used in on/off applications Mounting and Operating Instructions EB 8390 EN Firmware version 1.
Definition of the signal words used in these mounting and operating instructions DANGER! indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING! indicates a hazardous situation which, if not avoided, could result in death or serious injury. 2 NOTICE indicates a property damage message.
Contents 1 Important safety instructions...........................................................................6 2 Article code....................................................................................................7 3 Design and principle of operation...................................................................8 3.1 Versions.......................................................................................................11 3.2 Communication..............................
Contents 8.6 Adjusting the limit contacts............................................................................40 8.7 8.7.1 8.7.2 Initialization.................................................................................................41 Start automatic initialization..........................................................................42 Start manual initialization..............................................................................43 8.8 Replacing an electronic limit switch.
Firmware revisions Firmware Revisions 1.12 Changes to parameters and error messages (see section 13) • Parameters renumbered due to parameters being added or removed. Removed parameters: – 'PST initialization' (the partial stroke test no longer needs to be initialized). – Info: Rotary motions New parameters: – 'Actuator type' (rotary or linear actuator). See section 8.3. – 'Switching function of contacts' (NO or NC contact). See section 8.5.
Important safety instructions 1 Important safety instructions For your own safety, follow these instructions concerning the mounting, start up and operation of the electronic limit switch: −− The device is to be mounted, started up or operated only by trained and experienced personnel familiar with the product.
Article code 2 Article code Electronic Limit Switch Type 3738-20- x x x 1 x 0 0 x x x x 0 x With LCD Explosion protection Without 0 0 0 ATEX: II 2G Ex ia IIC T6; II 2D Ex IIIC T80°C IP 66 1 1 0 ATEX: II 2G Ex eb[ia] IIC T4; II 2D Ex tb IIIC T80°C IP 66 3 1 0 GOST: 1Ex ia IIC T6/T5/T4 Ga X; Ex tb IIIC T80°C Db X 1 1 3 GOST: 1Ex e [ia] IIC T4 Gb X; Ex tb IIIC T80°C Db X 3 1 3 0 Solenoid valve External 0 Integrated 4 Company version SAMSON 0 AIR TORQUE 1 Housing Standard aluminum, black
Design and principle of operation 3 Design and principle of operation The Type 3738-20 Electronic Limit Switch can replace conventional solenoid valves and limit switches used for the automation of on/off valves without the need to change the wiring or signal level.
Design and principle of operation 12 Electronic limit switch Power Supply SSP interface 13 A 10 9 14 B 15 3 C 5 4 16 St 6 Signal for solenoid valve: V1 or V3 11 7 8 2 1 Actuator 1 2 3 4 5 6 7 8 AMR sensor with electronics A/D converter Microcontroller Electrical insolation Electrical insolation Actuation of solenoid valve Solenoid valve Air capacity booster 9 10 11 12 13 14 15 16 Display Rotary pushbutton (on-site operation) LED for solenoid valve Internal supply NAMUR contact A (limit
Design and principle of operation 12 Electronic limit switch Power Supply SSP interface 13 A 10 9 14 B 15 3 C 5 4 16 St 6 Signal for solenoid valve: V1 11 2 V2 7 1 Actuator 1 2 3 4 5 6 7 AMR sensor with electronics A/D converter Microcontroller Electrical insolation Electrical insolation Actuation of solenoid valve Solenoid valve 9 10 11 12 13 14 15 16 Display Rotary pushbutton (on-site operation) LED for solenoid valve Internal supply NAMUR contact A (limit switch for fail-safe positio
Design and principle of operation NAMUR contacts A, B, C The contacts can be configured as either NO or NC contacts. See Fig. 4 and section 8.5. NAMUR contact St This contact is a NC contact. 3.1 Versions Type 3738-20-xxx1400xxx000 Electronic Limit Switch with integrated solenoid valve The electronic limit switch with integrated solenoid valve form a compact unit together with a pneumatic actuator, which is easy to mount.
Design and principle of operation 3.2 Communication The electronic limit switch can be configured with SAMSON's TROVIS-VIEW Configuration and Operator Interface. The electronic limit switch has for this purpose a SAMSON SSP interface to allow the RS-232 or USB port of a computer to be connected to it over a serial interface adapter cable. The TROVIS-VIEW software enables the user to easily configure the electronic limit switch as well as view and document process parameters on a computer.
Design and principle of operation strumented systems up to SIL 2 (single channel) and SIL 3 (redundant configuration) according to IEC 61508. Note: Safety-related end position monitoring and emergency venting work independently from one another to meet the device design requirements to conform with SIL.
Technical data 4 Technical data 4.1 Electronic limit switch Electronic Limit Switch Type 3738-20-xxx1400xxx000 Version With integrated solenoid valve With external solenoid valve Permissible range of rotation Min.: 0 to 30° Max.: 0 to 170° Communi- Local communication cation Software SAMSON SSP interface with serial interface adapter Supply air Supply air 2.4 to 8 bar Air quality 3738-20-xxx1000xxxx00 TROVIS-VIEW with database module 3738-20 Acc. to ISO 8573-1 Max.
Technical data Electronic Limit Switch Type 3738-20-xxx1400xxx000 Version With integrated solenoid valve With external solenoid valve Degree of protection IP 66 Safety approval Safety-related end position monitoring The limit switches are suitable for use in safety-instrumented systems up to SIL 2 (single channel) and SIL 3 (redundant configuration) according to IEC 61508. For further details, refer to section 3.3 Safety-related information. Emergency venting See section 3.
Technical data Electronic Limit Switch Type 3738-20-xxx1400xxx000 Version With integrated solenoid valve With external solenoid valve Contacts Contact C Limit contact for intermediate position Contact St Fault alarm contact Current specifications when contact A is not connected 3738-20-xxx1000xxxx00 PTO (power to open): Responds when the valve moves through the switching contact towards the operating position (P14) PTC (power to close): Responds when the valve moves through the switching contact to
Attachment 5 Attachment DANGER! −−Electrostatic charging Due to the high surface resistance of the enclosure cover (RIsol. ≥ 109 Ω), installation and maintenance on the equipment must be performed in such a way that electrostatic charging cannot occur. −−Mechanical effects In areas where damage to the housing can be expected due to mechanical influences, the housing must be protected by an additional cover.
Attachment 5.1 Accessories Table 1: Accessories Order no. Attachment to linear actuators (NAMUR attachment) Version with integrated solenoid valve G ¼ 1402-0540 Version with integrated solenoid valve ¼ NPT 1402-0541 Version for external solenoid valve G ¼ 1402-0542 Version for external solenoid valve ¼ NPT 1402-0543 Plus mounting parts for Type 3271 Actuator Version up to 700 cm² Attachment to rotary actuators acc. to VDI/ VDE 3845, fixing level 1 (2010) Cable glands (M20 x 1.
Attachment 5.2 Attachment to linear actuators 2. Push the O-ring (3.1) onto the air duct of the molded seal (3). 3. Fasten the electronic limit switch (1) to the mounting unit (2) using the two screws mounted on the electronic limit switch as shown in Fig. 5. The electronic limit switch is mounted to linear actuators according to IEC 60534-6 (NAMUR attachment). Required accessories: see Table 1 5.2.1 4. Remove the stopper on the supply air port (SUPPLY, 2.1) of the mounting unit (2).
Attachment 5.2.2 Attachment Mounting to Type 3271 Actuators with 1400 and 2800 cm² actuator areas and with 200 mm rated travel (Fig. 7 2 ) Fasten the follower plate (7.4) on the outer holes to the stem connector (9) of the actuator using the screws (7.5). Use the lever (5) underneath the mounting unit (2) and the pin (6) on the lever to adapt the electronic limit switch to the linear actuator used. Mounting to Type 3271 Actuators with 2800 cm² actuator area and with 50, 100 or 200 mm rated travel (Fig.
Attachment 1 2 2.1 4 5 5.1 5.2 6 6.1 6.2 7.1 7.2 7.3 7.4 7.5 8 8.1 8.2 9 Electronic limit switch Mounting unit Supply air port (SUPPLY) Screw Lever Disk spring Nut Follower pin Washer Nut Follower plate Washer Screws Follower plate Screws Bracket Pin Screws Stem connector 9 7.1 7.2 7.4 8 7.3 1 6 7.5 7.1 5 2 8.2 8.1 7.2 6 7.3 3 5 2 4 6 5 2.1 1 Fig.
Attachment 5.3 Attachment to rotary actuators Fig. 8 The electronic limit switch is mounted on rotary actuators according to VDI/VDE 3845, level 1 (2010). The version with integrated solenoid valve can be directly mounted to a Pfeiffer Type 31b Rotary Actuator.
Attachment Versions with integrated solenoid valve (Type 3738-20-xxx1400xxx000) Version for external solenoid valve (Type 3738-20-xxx1000xxxx00) Actuator surface M6 B Actuator surface Ø 5.5 30 *C A Shaft height B [mm] 20 30 50 Distance between holes A [mm] 80 80/130 130 Fig.
.1 Attachment Preparations Version with integrated solenoid valve (Type 3738-20-xxx1400xxx000) (Fig. 10) Two mounting platforms are available for the attachment (Fig.
Attachment Single-acting 3/2-way 3.1 3 Double-acting 5/2-way 2 4 Distance piece for attachment to rotary actuators with a 50 mm shaft height 5 4 1 2 3 3.1 4 5 Electronic limit switch Mounting platform Molded seal O-ring Molded seal Distance piece Fig.
Attachment 5.3.2 Attachment The attachment depends on the shaft height of the rotary actuator upon which the electronic limit switch is to be mounted (Fig. 11). Shaft height 20 mm 30 mm 50 mm Screw with magnet (6) SW 24, 30 mm SW 24, 20 mm SW 24, 20 mm Fillister-head screws (10) M5x16 M5x16 M5x40 1. Attachment to rotary actuators with a 20 or 30 mm shaft height: Place the spacers (11) on the inner holes of the actuator.
Attachment 6 6 6 9 9 9 8 8 8 7 10b 10b 10a 10a 10a 2 2 2 2.1 2.1 2.1 11 11 5 20 mm shaft height 1 2 2.1 5 6 30 mm shaft height Electronic limit switch Mounting platform Supply air port (SUPPLY) Distance piece Screw with magnet 7 8 9 10 11 50 mm shaft height Adapter Indicator wheel Plate Fillister-head screws Spacer Fig.
Connections 6 Connections WARNING! Mount the electronic limit switch, keeping the following sequence: −−Mount the electronic limit switch on the actuator. Refer to section 5.2 and 5.3. −−Connect the supply air. Refer to section 6.1 and 6.2. −−Connect the electrical power. Refer to section 6.3. −−Perform the start-up settings. Refer to section 8. The connection of the power may cause the actuator shaft to move, depending on the operating mode.
Connections 6.2 Supply pressure Version with integrated solenoid valve (Type 3738-20-xxx1400xxx000) Depending on the mounting platform used (ISO 228/1–G ¼ or ¼–18 NPT), customary fittings for metal or copper tubing or plastic hoses can be used. The supply is connected at the side of the mounting unit or mounting platform.
Connections Do not loosen enameled screws in or on the housing. Note on the selection of cables and wires: −− Observe clause 11.2 for installation of the non-intrinsically safe circuits and Clause 12 of EN 60079-14 (VDE 0165, Part 1) for installation of the intrinsically safe circuits. Clause 12.2.2.7 of EN 60079-14 applies when running multi-core cables and wires with more than one intrinsically safe circuit. −− The radial thickness of the insulation of a conductor for common insulating materials (e.g.
Connections V1 + _ _ 81 82 84 St + _ 83 62 C _ + 61 B + _ A V3 + _ 282 PTO 52 51 42 41 PTC 42 41 52 51 + 281 24 V DC 24 V DC Optionally V1 or V3 Optionally V1 or V3 Connection acc. to IEC 60947-5-6 Connection of integrated solenoid valve: optionally V1 or V3 Connection of electronic limit switch: A, B, C, St – + – + Display C Rotary pushbutton LED for solenoid valve V1 St + – – + B – + A – V3 + SAMSON SSP interface Fig.
Connections V2 + _ Acc. to manufacturer´s specifications V1 + 81 _ _ 82 84 24 V DC, max. 18 W Connection of external solenoid valve: V1, V2 V2 + – St + 83 _ 62 C + 61 _ B PTO 52 PTC 42 _ 42 52 A + 41 51 Connection acc. to IEC 60947-5-6 Connection of electronic limit switch: A, B, C, St – + – + St C Rotary pushbutton Display LED for solenoid valve V1 + 51 41 + – – + B – + A SAMSON SSP interface Fig.
Operator controls and readings 7 Operator controls and readings 7.1 Rotary pushbutton The rotary pushbutton ( ) is located underneath the housing cover. The electronic limit switch is operated on site using the rotary pushbutton: Turn Press : Select parameters and values 7.2 SAMSON SSP interface The SAMSON SSP interface is located underneath the housing cover.
Operator controls and readings 7.3 Operating structure The P2 parameter allows the user to switch between the RUN operating mode and SET configuration mode. In the SET configuration mode, the parameters marked with an asterisk (*) (see section 13) can be changed and the device can be initialized. To switch over modes, the key code must be entered first. The key code can be found on page 77. To avoid unauthorized use of the key code, remove the page or make the key code unreadable.
Operator controls and readings Table 3: Indication of operating states Contacts A, B, C can configured as required (NC or NO contact) Contact St is always a NC contact A B C St Possible operating states in SET configuration mode Device not initialized/default settings Device initialized, fail-safe position Device initialized, operating position Possible operating states in RUN operating mode Fail-safe position Operating position
Placing the electronic limit switch into operation using its default settings – Switching voltage must be applied! Initial reading (electronic limit switch not initialized) % P1: Reading direction [1234] Initial reading (electronic limit switch initialized) Return to RUN mode ¿ Enter key code: If the wrong key code is entered, the mode does not change P4: Actuator type [ROT] P5: Actuator’s direction of action [PTO] P6: Switching function of contacts A, B, C [NC] P7: Switching contact, lower end pos
Changing the operating mode and parameter settings Initial reading (electronic limit switch initialized) % % Initial reading (electronic limit switch initialized) Return to RUN mode ¿ ¿ Enter key code: If the wrong key code is entered, the mode does not change Enter key code: If the wrong key code is entered, the mode does not change ¿ ¿ Change to SET configuration mode (no operation, settings of parameters Px can be changed) Other configurations possible Example: adapting the display direction ¿ ¿
Start-up WARNING! Mount the electronic limit switch, keeping the following sequence: −−Mount the electronic limit switch on the actuator. Refer to section 5.2 and 5.3. −−Connect the supply air. Refer to section 6.1 and 6.2. −−Connect the electrical power. Refer to section 6.3. −−Perform the start-up settings. Refer to section 8. NOTICE Perform the start-up settings in the same sequence as described (section 8.1 to 8.7).
Start-up The display’s functioning is checked using the P3 parameter. P3: Display reading 8 P3: Display reading 1 P3: Display reading 9 % P3: Display reading 2 P3: Display reading 10 P3: Display reading 3 Turn Press P3: Display reading 4 P3: Display reading 5 P3: Display reading 6 Turn g P3 , reading 1 , reading 2 to 10 Press to confirm testing. The last test of the display readings is saved with a time stamp in the electronic limit switch. The time stamp can be read in TROVIS-VIEW. 8.
Start-up Turn g ROT (rotary actuator)/ LIN (linear actuator) Press to confirm the actuator type and to exit the parameter. Note: After initialization, this parameter is locked and can first be selected and changed after performing a reset to default settings (P21). 8.5 Determining the switching function of contacts The setting is made using P6 parameter. Note: The local operation allows the contacts A, B and C to be defined together as NO or NC contacts.
Start-up Direction of action PTC: Direction of action PTO: Fail-safe position 100 % Fail-safe position 0 % Operating position 100 % Operating position 0 % x [%] x [%] 100 100 Contact B P8 Contact A P7 Contact A Contact B % P8 P7 0 0 Switching range Fig. 15: Switching range of end positions Note: The following correlations apply to the setting ranges of the switching ranges for lower end position (P7) and the upper end position (P8): −−P7: 0.5 % to (P8 – 2.0 %) −−P8: (P7 + 2.0 %) to 99.
Start-up Note: If an electronic limit switch is replaced with another electronic limit switch of the same type, the replaced electronic limit switch may not need to be reinitialized, provided certain conditions are met. Refer to section 8.8 Replacing an electronic limit switch on page 44. After the electronic limit switch has been initialized, the current valve position appears in % on selecting P0. Keep the rotary pushbutton ( ) pressed to display the reading as an angle (°).
Start-up −− −− −− −− −− −− −− E0: E1: E2: E3: E4: E5: E6: 8.7.2 No initialization Actuator does not move Min. travel not reached Max. travel exceeded Actuator travels too fast No switching voltage applied Time-out P10: Fail-safe position found P10: Confirmation of operating position (solenoid valve energized) Start manual initialization Note: −−Select ESC on the display and press the rotary pushbutton to cancel the manual initialization.
Start-up The electronic limit switch saves the operating position. After the initialization has been successfully completed, the current valve position in % is indicated. The electronic limit switch must be in the configuration mode (SET). To start operation, exit the configuration mode. See page 37. The manual initialization is automatically canceled if a fault occurs (ERR on the display). The initialization error can be read in the ERR parameter level: −− −− −− −− E0: E2: E3: E6: No initialization Min.
Start-up The electronic limit switch must be in the configuration mode (SET). To start operation, exit the configuration mode. See page 37. ))Re-initialize the electronic limit switch (see section 8.7). ))Set PST parameters (see section 9.2). The end position calibration is automatically canceled if a fault occurs (ERR on the display). The error can be read in the ERR parameter level: −− E6: −− E8: Time-out Unable to calibrate end positions 8.
Operation 9 Operation WARNING! The actuator shaft moves while the electronic limit switch is operating. Do not touch the actuator shaft or obstruct it to avoid risk of injury to hands or fingers. 9.1 Lock operation When the locking function is active, the electronic limit switch can only be operated remotely using the TROVIS-VIEW software. The locked local operation of the electronic limit switch is indicated on the display by the icon.
Operation Note: −−If the travel of the PST is monitored and, if necessary, the status messages F6 ('Min. value for PST not reached') and F7 ('Max. value for PST exceeded') are to be generated, the P12 parameter must be set to YES. −−Contact C can be used to indicate a third switching position. Refer to following example for direction of action PTO.
Operation Direction of action PTO Contact C Contact B Contact C Contact B Contact B Contact B x [%] Contact St 100 P8 P15 P14 SV off SV on Holding time Dead time t [s] PST duration PST start PST start PST start Direction of action PTC Contact C Contact B Contact C Contact B Contact B Contact B Contact St x [%] P14 P15 P7 t [s] PST start PST successful PST start PST start PST not successful Fig.
Operation 9.2.1 Defining the PST target range Define the target range by configuring P14 and P15 parameters. PST target range = 'PST step end' (P14) ± ½ 'PST tolerance band' (P15) NOTICE It is important to take the process conditions (e.g. pressure, medium, dead time, breakaway torque and torque of the valve) into account on defining the PST target range. A valve that opens (PTC) and closes (PTO) too far may affect the process! The electronic limit switch must be in the configuration mode (SET).
Operation P17: Start of PST is being prepared P17: Test in progress Turn g P17 (travel range in %) six seconds long. Press The seconds remaining until the test starts appear on the display. The test starts (display: PST). 9.2.3 Note: A test in progress can be canceled by pressing the rotary pushbutton ( ). ESC appears on the display. Configuration example based on PTO direction of action The valve is normally open (operating position = 100 %).
Operation When the status message F6 or F7 is generated, check the attachment, supply air lines and the valve. If necessary, the settings of the target range must be changed accordingly (P14 and P15). See "Define PST target range (P14, P15)" in point 2. 4. Start automatic PST (P16) P16 = 7 days The test starts automatically once a week after switching to RUN operating mode. The valve leaves the operating position (100 %) without a switching demand. 5.
85 P14 – ½ P15 P15 = 90 P14 + ½ P15 ⇒ 95 100 P8 = 98 x [%] > 2.1 mA < 1.2 mA Contact St > 2.1 mA < 1.2 mA Contact C < 1.2 mA Contact B > 2.1 mA < 1.2 mA Contact A > 2.1 mA Start PST 1 not successful * End Start PST 2 successful * End t [s] Target range Operation * The contact C remains activated 3 seconds after the valve moves out again of the PST target range. Fig.
Operation 9.3 Testing the contacts P19: Simulation of contact C: (signal on reaching target range during partial stroke test) The following contacts can be tested in the P19 parameter.
Operation The electronic limit switch must be in the configuration mode (SET). See page 37. generated when a fault occurs and when P12 = YES. −−The status message F10 indicates that one of the error messages E0 to E10 has been generated. P20: Testing solenoid valve % Turn Example: PTO Example: g P20 F2: Limit of maximum rotary motion (P26) exceeded Press , P20 blinks and ESC appears on the display.
Maintenance, calibration and work on equipment for possible causes and the recommended action. 10 Maintenance, calibration and work on equipment 9.5.3 Interconnection with intrinsically safe circuits to check or calibrate the equipment inside or outside hazardous areas is to be performed only with intrinsically safe current/voltage calibrators and measuring instruments to rule out any damage to components relevant to explosion protection.
Servicing explosion-protected devices 11 Servicing explosion-protected devices 12 Firmware update (serial interface) If a part of the device on which the explosion protection is based needs to be serviced, the device must not be put back into operation until a qualified inspector has assessed it according to explosion protection requirements, has issued an inspection certificate or given the device a mark of conformity.
Parameter list 13 Parameter list No. Parameter – Readings, values [default setting] Description Parameters marked with an asterisk (*) can only be changed when the electronic limit switch is in the SET configuration mode (set in P2).
Parameter list No. Parameter – Readings, values [default setting] P6 Switching function of contacts NC contact A, B, C NO contact [NC] · NO Description See section 8.5 NX1 … NX6 ESC Note: The contacts A, B and C can be individually configured in the TROVISVIEW software. This indicated on the display as NX1 … NX6. All the contacts are configured together as NC contact (1) or NO contact (2) by the local operation. P7* Switching contact, lower end position 0.5 % to (P8 – 2.0 %) · ESC [2.
Parameter list No. Parameter – Readings, values [default setting] Description P13* Status readout actuator transit time Issue status message F4 when the actuator exceeds the adjusted actuator transit time. See section 9.5.1 [OFF] · 0.5 to 1800.0 s · ESC Partial stroke test (PST) The PST step range is limited between 2 and 98 % ('PST step end' ± ½ 'PST tolerance band') P14* PST step end 4.0 to 96.0 % · ESC P15* [90.
Parameter list No. Parameter – Readings, values [default setting] Description Reset function P21* Reset RST · ESC Resets all settings of electronic limit switch to the factory default settings. See section 8.
Parameter list 13.1 Status messages No. Status message Possible causes Status messages marked with an asterisk (*) can be confirmed in SET configuration mode. See section 9.5.1. TROVIS-VIEW: F0 Current status messages are saved with a time stamp in [Diagnostics – Status messages]. Stationary outside required/desired end positions • Mechanical blockage • Supply pressure too low • External leakage Recommended action • Check attachment and supply air line.
Parameter list No. F5* Status message Possible causes Actuator stationary when required to move • Mechanical blockage • Supply pressure too low • External leakage Recommended action • Check attachment and supply air line. Note: If the valve moves after a delay, F5 remains active until the next successful switching demand. Partial stroke test (PST) F6* Min. value for PST not reached • Mechanical blockage F7* Max.
Parameter list 13.2 Error messages No. Error message Possible causes Error messages marked with an asterisk (*) can be confirmed in SET configuration mode. See section 9.5.2. TROVIS-VIEW: E0 The last 32 error messages are displayed with a time stamp in [Diagnostics – Logging of device errors]. Positioner not initialized • The electronic limit switch has not yet been initialized. Recommended action • Start initialization with P9 or P10 parameter.
Parameter list No. E5* Error message Possible causes INIT: no switching voltage applied • Incorrect voltage supplied to the solenoid valve • Forced venting active during initialization Recommended action • Check switching voltage to integrated/external solenoid valve. • Check forced venting input. E6* INIT: time-out • Supply pressure too low • Friction too high • KV coefficient of solenoid valve too low Recommended action • Check attachment and supply air line.
Dimensions in mm 14 Dimensions in mm 231 84 42 20 10 17 130 185 30 40 97 EB 8390 EN 65
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Index Index Firmware update................................... 56 A I Accessories........................................... 18 Actuator type........................................ 39 Article code............................................ 7 Attachment accessories...................................... 18 to linear actuators............................ 19 to rotary actuators........................... 22 Initialization automatic........................................ 42 manual.......................
Index Supply.................................................. 28 Supply pressure..................................... 28 Switching function of contacts................. 40 T Technical data electronic limit switch....................... 14 solenoid valve................................. 16 Testing contacts..................................... 53 Testing solenoid valve............................ 53 W Wire break........................................... 30 Z Zero calibration................................
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Key code EB 8390 EN 42 77
Parameter list P0 Info: actual value P1 Reading direction P2 P3 Status messages F0 Stationary outside required/desired end positions Configuration: RUN/SET F1 Left end position without being required to move Verify LCD segments F2 Limit of P26 exceeded P4* Actuator type F3 Temperature limits exceeded P5* Actuator's direction of action F4 Actuator transit time exceeded P6* Switching function of contacts A, B, C F5 Actuator stationary when required to move P7* Switching contact, lowe
Assignment based on the direction of action Assignment based on the direction of action PTO (power to open) Contact A Contact B + – Position Switching contact for end position 41 42 Fail-safe position (0 %) · Valve CLOSED P7 (0.5 to 96.0 %, [2.0 %]) 51 52 Operating position (100 %) · Valve OPEN P8 (4.0 to 99.5 %, [98.0 %]) PTC (power to close) Contact A Contact B + – Position Switching contact for end position 51 52 Fail-safe position (100 %) · Valve OPEN P8 (4.0 to 99.5 %, [98.
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