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ACX3200/ACX3400 Series

Adaptive Pressure Controllers

User Guide

Celerity, Inc.
915 Enterprise Boulevard
Allen, TX 75013 USA
T +1 972 359 4000
F +1 972 359 4100

SD536577 REV 001 08/07

Summary of Contents for ACX3200 Series

Page 1: ...ACX3200 ACX3400 Series Adaptive Pressure Controllers User Guide Celerity Inc 915 Enterprise Boulevard Allen TX 75013 USA T 1 972 359 4000 F 1 972 359 4100 SD536577 REV 001 08 07 ...

Page 2: ...ORITHM 7 _2 8 VALVE POSITIONING 7 _2 9 MANUAL VALVE OVERRIDE 7 _3 0 INSTALLATION 9 _3 1 MOUNTING ACX3200 AND ACX3400 9 _4 0 CONFIGURATION 10 _4 1 RS 232 INTERFACE 10 _4 2 RS 232C DCE DESCRIPTION 10 _4 3 HARDWARE HANDSHAKING 12 _4 4 RS 422 INTERFACE 13 _4 5 RS 485 INTERFACE 13 _4 6 SELECTING NUMBER OF CM INPUTS 14 _4 7 SELECTING INPUT AND OUTPUT VOLTAGE LEVELS 14 _4 8 FACTORY DEFAULT SWITCH POSITIO...

Page 3: ...5 2 10 Algorithm Select 21 _5 2 11 Units Select 21 _5 2 12 Software Version Serial Port Configuration Analog Output Voltage Range 21 _5 2 13 Change Zero Offset 21 _5 2 14 Reset Zero 21 _5 2 15 Zero offset 21 _6 0 SERIAL INTERFACE 22 _6 1 INTRODUCTION 22 _6 1 1 Command Notation 22 _6 1 2 Command Strings 22 _6 2 COMMAND OVERVIEW 23 _7 0 FUNCTIONAL CONTROL COMMANDS 24 _7 1 SET PRESSURE CONTROL ALGORI...

Page 4: ... TRIP POINT 34 _8 0 RAMP FUNCTION COMMANDS 36 _8 1 RAMP FUNCTION BEHAVIOR 36 _8 2 SET RAMP FUNCTION 37 _8 3 SET PRIMARY RAMP SETPOINT 38 _8 4 SET PRIMARY SETPOINT DELAY TIME 38 _8 5 SET SECONDARY RAMP SETPOINT 38 _8 6 SET SECONDARY SETPOINT RAMP TIME 38 _8 7 SET SECONDARY RAMP SETPOINT DELTA TIME 38 _9 0 REPORT STATUS COMMANDS 39 _9 1 INITIATE DIAGNOSTIC ROUTINE 40 _9 2 REPORT ALGORITHM TYPE 40 _9...

Page 5: ...NPUT OUTPUT 50 _10 1 THEORY OF OPERATION 50 _10 2 UNIQUE DEVICE ADDRESS 50 _10 3 RS 485 DATA LINK 50 _10 4 MODIFYING THE RS 485 ADDRESS 51 _10 5 GENERAL OPERATION 51 _10 6 COMMAND RESPONSE AND ACKNOWLEDGEMENT 51 _11 0 AUXILIARY INTERFACE 54 _11 1 AUXILIARY PORT FUNCTIONS 56 _11 1 1 Trip Point Relays 56 _11 2 CONTROL INPUTS 57 _11 2 1 Hold Control Select 57 _11 2 2 Close Input 57 _11 2 3 Open Input...

Page 6: ... Output 59 _11 4 4 Valve Angle Signal Output 59 _12 0 MAINTENANCE AND TROUBLESHOOTING 61 _12 1 CLEANING AND ROUTINE MAINTENANCE 61 _12 2 TROUBLESHOOTING GUIDE 61 _12 3 ACX3400 ERROR MESSAGES 61 _13 0 ASCII CHARACTER CODES 62 _14 0 SERIAL PORT ADAPTORS 63 _15 0 WARRANTY 64 _ ...

Page 7: ...4 PART SUBSTITUTIONS AND MODIFICATIONS Modifying an instrument in any way not only voids the warranty but could cause a safety hazard and should be avoided Repair work should be done at the fac tory or by a factory authorized service center 0 5 GENERAL SAFETY GUIDELINES Always follow established industrial safety practices when operating any produc tion equipment Safety is designed into every prod...

Page 8: ... equipment NEVER operate damaged equipment NEVER permit unauthorized or untrained personnel access to the system 0 5 2 Recommended practices USE THE BUDDY SYSTEM ALWAYS perform maintenance procedures in teams of two or more people one to monitor the controls and indicators and one to watch the system operation ALWAYS observe all warning labels ALWAYS avoid all unsafe acts The safety procedures des...

Page 9: ...ontrolling pressure The uses of each are described along with sensor input configurations valve positioning and control options The Auxiliary Interface section describes in detail the requirements for electri cally controlling and monitoring the ACX using contact closure and analog sig nals All commands and functions of the ACX may be performed using the RS 232 or RS 485 communications port The Se...

Page 10: ...e features as the ACX3200 Series and includes a front panel keypad and display for full system control and monitoring The ACX3200 and ACX3400 are configured with internal AC operated power supplies See Table 1 on page 8 for details 2 2 ACX FEATURES User selectable pressure control algorithms Adaptive control no phase lead or gain adjustments are necessary The sys tem automatically adapts to change...

Page 11: ...ntrol actions of the ACX The PID parameters may be manually selected by the user or automatically selected using a PID learning algorithm Manual fine tuning of PID parameters may be needed following completion of the Learn Algorithm The Hybrid algorithm begins pressure control with the PID algorithm using phase and gain parameters once settled at setpoint it then uses the Adaptive algorithm for im...

Page 12: ...reates changes in pressure and is directly associated with the rate of rise in the system and the effective pumping speed The gain is adjusted in conjunction with the phase to tune the response of the controller to provide the desired time to setpoint and control performance at setpoint Each of the 10 programmable setpoints serial only and the analog setpoint have associated phase and gain values ...

Page 13: ...e control the ACX may be used to pre cisely position the attached throttle valve The valve may be set to any position between fully closed 0 and fully open 90 Valve positioning is available using the serial or auxiliary port interface In the serial mode the Go to valve position command may be used when using the auxiliary interface an analog signal of 0 5 VDC or 0 10 VDC user selectable is used in...

Page 14: ...232 ACX3211 ACX3411 RS 485 Pressure Signal Inputs 0 10 VDC linearly proportional to pressure Pressure Valve Angle Output 0 5 VDC or 0 10 VDC user selectable and linearly proportional Analog Setpoint Input 0 5 VDC or 0 10 VDC user selectable and linearly proportional Valve Open Close Time 2 Seconds Relay Contacts 2 Switch Rating 30 VDC 1A maximum resistive load Compatible Sensors All of Celerity s ...

Page 15: ...move power from the ACX3200 and ACX3400 series When mounting be sure to provide adequate clearance to allow disconnecting the power cord 88 9 mm 3 50 65 0 mm 2 56 309 63 mm 12 19 3 30 mm 0 13 9 65 mm 0 38 ACX3200 42 55 mm 1 675 86 36 mm 3 40 4 75 mm 0 187 AUXILIARY PORT STATUS COMM VALVE OVERRIDE VALVE 50 60HZ 2A MAX 100V 240V PWR INPUT CB1 S P H U 2 DEVICE PORT 79 38 mm 3 125 171 45 mm 6 75 166 3...

Page 16: ...DCE device Transmitted data source HOST is an input to the ACX and is connected to pin 3 of the RS 232 Communications port 9 pin D Subminiature connector Received data source ACX is an output from the ACX and is connected to pin 2 of the DB9 The RTS hardware handshaking input source HOST is connected to pin 7 of the DB9 If the ACX has been configured for hardware handshaking see the JC command thi...

Page 17: ... wire mode only three lines on the RS 232 connector are used the receive and transmit data lines and the ground pin In this configuration the ACX will receive and transmit data as quickly as possible When using the five wire mode or hardware handshaking the system control ler must support the Request to Sent RTS and Clear to Send CTS control lines The ACX does not require re configuration in this ...

Page 18: ... 1 Default switch setting 2 Refers to models ACX32010 and ACX3401 Only Baud Rate S1 1 S1 2 Parity S1 3 S1 4 2400 OFF OFF No Parity OFF1 OFF1 4800 OFF ON Even Parity ON OFF 9600 ON1 OFF1 Odd Parity ON ON 19200 ON ON 1 Stop Bit OFF1 OFF1 12002 OFF OFF 2 Stop Bits OFF ON FRONT REAR S1 S2 DANGER SHOCK HAZARD Disconnect power from ACX3200 or ACX3400 before making adjustments to remove the risk of elect...

Page 19: ... this configuration the ACX may be networked with up to 32 separate devices that conform to the RS 485 interface Refer to the RS 485 sec tion for additional information page 50 Figure 8 Typical DIP switch S1 position RS 485 Switches S2 1 and S2 8 must be ON if the ACX is the farthest logical device from the host controller All intermediate ACX controllers must have switches S2 1 and S2 8 OFF For t...

Page 20: ...ge Levels The ACX input and output voltages for the analog setpoint pressure and valve angle are user configurable The factory default settings are 0 10 VDC for both input and output voltages Use DIP switches S1 7 and S2 5 to change the con figuration See Table 6 below for switch configurations Table 6 Output Voltage Switch S1 6 selects analog voltage output for one or two CMs With S1 6 in the OFF...

Page 21: ...Rate OFF 9600 Baud S1 3 Parity Stop OFF No Parity 1 stop Bit S1 4 Parity Stop OFF No Parity 1 stop Bit S1 5 RS 485 422 OFF RS 232 Enabled S1 6 Analog Output Full Scale OFF 0 100 of high range sensor S1 7 Analog Output Range OFF 0 10VDC represents 0 100 of full scale S1 8 Front Panel Enable OFF ACX3200 ON ACX3400 S2 1 RS 485 termination OFF Disabled S2 2 Number of CMs OFF One CM S2 3 Not used OFF S...

Page 22: ... MDVX 11 Valve Signal Phase 4 Phase 4 motor signal to the MDVX DANGER The power cord MUST be routed in such a way as to avoid contact with hot surfaces on the ACX3200 and ACX3400 units The power cord MUST provide protection against ground faults DANGER Disconnecting the power cord is the ONLY way to remove power from the ACX3200 and ACX3400 series When mounting these units be sure to provide adequ...

Page 23: ...taining Y codes 6 7 or each signifying a fault condi tion see REPORT OPERATIONAL STATUS WORD on page 43 12 Valve Signal Phase 3 Phase 3 motor signal to the MDVX 13 Valve Power Common Power common for the valve motor 14 CM1 15 VDC 15 VDC power for CM1 15 CM1 Power Common Power supply common for 15 VDC for CM1 16 CM1 Chassis Ground Chassis ground for CM1 17 CM2 15 VDC 15 VDC power for CM2 18 CM2 Pow...

Page 24: ... Port is also the interface used for the 0 10 VDC or 0 5 VDC analog set point input and pressure and valve angle outputs For a complete explanation of the Auxiliary interface see AUXILIARY INTERFACE on page 54 4 10 6 Serial Interface Port The Serial interface COM is used to communicate with the ACX using RS 232 RS 422 or RS 485 protocols See CONFIGURATION on page 10 for serial port operation and c...

Page 25: ...current position The ESC key returns the ACX to the default display without performing the previous change if any 5 2 ACX3400 FRONT PANEL MENU FUNCTIONS 5 2 1 Setpoints To modify or view a setpoint value press the down or up arrow keys until the dis play reads Setpoints Press the ENTER key To change the setpoint number press the up or down arrow key Press ENTER to select the setpoint number or ESC...

Page 26: ...ess ESC to cancel the operation For dual sensor operation selected by Switch S2 Position2 use the arrow keys to toggle between the Snsr1 and Snsr2 Press ENTER to view the range for the selected sensor Set the range for both sensors using the procedures described above The full scale pressure range ratio between sensors is limited to 1 000 1 ratio is of CM1 to CM2 5 2 7 Lock High Sensor In a dual s...

Page 27: ...t To change the zero offset value press the arrow keys until the display reads Change ZERO Press the ENTER key Use the arrow keys to change the zero offset value The maximum offset is limited to 5 of the full scale of the low range CM or the high range CM if the ACX is configured for single sensor oper ation Press ENTER to record the new zero offset value Press ESC to cancel the operation 5 2 14 R...

Page 28: ...nfiguration parameters in case the power to the ACX is inter rupted The following section describes the commands used for the RS 232 RS 422 and RS 485 serial protocols For RS 232 and RS 422 communications see INSTALLATION on page 9 for configuration information and electrical connec tions For communications and addressing via the RS 485 interface see RS 485 SERIAL INPUT OUTPUT on page 50 6 1 1 Com...

Page 29: ...either A or a may be used Placeholders in the form of XXX XX etc are for reference only Some functions have alternate commands These are shown by CMD Alt CMD where the separates the primary command string from the industry standard command The alternate command can be used in lieu of the pri mary command command The command is an instruction sent to the ACX system Every command begins with a comma...

Page 30: ...valve 26 7 6 HOLD VALVE COMMAND H Hold the valve at its current position 26 7 7 GO TO VALVE ANGLE COMMAND V Open the valve to a set angle 27 Other 7 8 ADJUST PRESSURE COMMAND Zero Adjust A Z2 Adjust ACX pressure Zero reference 27 7 9 REMOVE ZERO OFFSET F0 Resets Zero offset 27 7 10 ZERO THE SENSOR Z1 Set current pressure equal to zero 28 7 11 SET NUMBER OF CMs SN Sets 1 or 2 CMs 28 7 12 SET CM FUL...

Page 31: ...se and gain parameters are used The parameter which ranges from 0 10 represents the analog setpoint and setpoints 1 10 Example Sending the following ASCII string P4 commands the ACX to control to setpoint 4 using phase 4 and gain 4 parame ters and the PID Algorithm Table 12 PID Algorithm Commands 7 26 SET TRIP POINT JR Sets backward compatibility 34 7 26 SET TRIP POINT ST Sets pressure trip points...

Page 32: ...ol pressure at the analog setpoint using the PID Algorithm Table 13 Learn Algorithm Commands 7 4 OPEN VALVE COMMAND Drives the valve fully open 90 until the open limit switch activates or another control command is received This command will halt all previous commands Syntax O 7 5 CLOSE VALVE COMMAND Drives the valve fully closed 0 until the closed limit switch activates or another control command...

Page 33: ...e of the CM Syntax A value or Z2 value The value is a one to five digit ASCII string used to represent the desired pres sure reading as a percentage of full scale The value must be in a range of 5 to 5 of full scale of the CM The Adjust Pressure command is used to zero the pressure reading when a base pressure is achieved This eliminates the need to perform a zero adjust ment at the pressure trans...

Page 34: ... controllers and for those applications that require 2 CMs where the ACX must switch from one gauge to the other in order to best resolve the current pressure Syntax N parameter value The parameter 1 selects CM1 The parameter 2 selects CM2 The value is any valid full scale range measured in Torr The valid range is 10 mTorr to 10 000 Torr The ratio between CM1 and CM2 must be greater than 1 and les...

Page 35: ...erformance of the ACX Syntax SE value Where value 0 disables software echo default value 1 enables software echo If echo is enabled the ACX responds to all set and control commands with _RDY The ACX responds with _RDY immediately after receiving the SE1 com mand After receiving the SEO command the ACX will not respond to this or other set and control commands with _RDY This is a settable NON VOLAT...

Page 36: ...factory default This command should be used with care since it will restore the factory defaults 7 17 LOCK TO HIGH SENSOR Lock to High Sensor will command the ACX to use only the high range pressure transducer to obtain pressure measurements This command is only valid when using two pressure transducers Syntax L1 7 18 LOCK TO LOW SENSOR Lock to Low Sensor will command the ACX to use only the low r...

Page 37: ...re programmed setpoint The possible parameter ASCII characters are 0 through 10 with 0 representing the analog setpoint and 1 through 10 representing setpoints 1 through 10 respectively Example Sending the following ASCII string after selecting Adaptive algorithm D1 commands the ACX to control pressure at the programmed setpoint value for setpoint 1 using the Adaptive Algorithm Table 16 Algorithm ...

Page 38: ...5 or M175 command valid for setpoints 1 5 only Table 17 Set Gain for Setpoint Number 7 23 SET GAIN COMPENSATION FACTOR This command allows the operation of the ACX to be simplified on a given tool while using the PID algorithm where the gain value associated with a flow rate can be used over a much wider pressure control range Typically the gain has to be changed over a small pressure control rang...

Page 39: ...n compensation factor to 2 0 If the pres sure continues to oscillate change the gain compensation factor to 4 0 and so on A gain compensation factor of 1 has no effect on the PID performance The gain compensation and gain can be modified while the ACX is controlling in either the high range or low range CM The ACX will adjust the gain if operating with the low range CM using the gain compensation ...

Page 40: ... of the last PC command received or to the default value if not previously modified 7 26 SET TRIP POINT This command sets the trip point for either of the two Trip Point relays Syntax ST parameter value The parameter specifies which of the two Trip Point relays is to be set selec tion is limited to 1 or 2 The value is the pressure as a percentage of full scale The relay contacts change state when ...

Page 41: ...p 35 Table 19 Set Trip Point Description Command Set Trip Point 1 ST T1 XXX XX Set Trip Point 2 ST T2 XXX XX 7 0 _COMMANDS FUNCTIONAL CONTROL ...

Page 42: ...ed which has the associated setpoint value When the pressure is within 2 of the primary setpoint the ACX starts an inter nal timer that is the Primary Setpoint Delay Timer When the primary setpoint delay timer expires the ACX begins ramping the pressure towards the second ary setpoint using the Secondary Setpoint Ramp Time and the Secondary Setpoint Delta Time values to control the pressure The Se...

Page 43: ...ns may vary Table 20 Ramp Function Commands See also FUNCTIONAL CONTROL COMMANDS on page 24 and REPORT STATUS COMMANDS on page 39 8 2 SET RAMP FUNCTION This command does not begin the ramp function process but enables the ramp function to operate once started See Ramp Function Behavior on page 36 Syntax SR value The value 1 enables the ramp function The value 0 default disables the ramp function T...

Page 44: ...value The value is a number in the range of 0 to 100 of full scale This is a settable NON VOLATILE command After a power up sequence the ACX will be restored to the condition of the last PF command received or to the default value if not previously modified 8 6 SET SECONDARY SETPOINT RAMP TIME This sets the secondary setpoint ramp time Syntax DT2 value The value is a number between 0 and 100 secon...

Page 45: ...ORT GAIN RG Reports the gain for each setpoint 42 9 7 REPORT GAIN COMPENSATION FACTOR RGC Reports the gain compensation factor 43 9 8 REPORT MODEL ID MID Reports the model identification 43 9 9 REPORTOPERATIONAL STATUS WORD R7 Reports the current status of the valve which setpoint is selected for control the range of pressure measurement whether or not the Adjust Pressure function is enabled and w...

Page 46: ... Where value 1 to report the full scale range of CM1 2 to report the full scale range of CM2 For RN1 the ACX responds with N1xx xx For RN2 the ACX responds with N2xx xx where xx xx is in Torr with a range of 10mTorr to 10 000 Torr 9 4 REPORT COMMAND The command prompts the ACX to provide status reports Syntax R selection 9 18 REPORT SETPOINT R S Reports the programmed setpoint 47 9 19 REPORT SOFTW...

Page 47: ...system The results from the diagnostic testing are stored in the Diagnostic Status Word DSW The DSW is a static string of nine characters which when decoded gives the sta tus of specific diagnostic tests The stored status information in the DSW can be retrieved using the Report command Upon retrieval the DSW will be cleared and ready to be updated with new information Syntax R9 The Report DSW comm...

Page 48: ... command reports the gain for a specific setpoint Syntax RG parameter The parameter is the setpoint of interest The valid ASCII characters for the parameter are 0 through 10 for the RG command setpoints 0 through 10 and 46 through 50 for the R command setpoints 1 through 5 only See Table 23 for a complete list of valid commands Example Sending the following ASCII string RG5 or R50 this command val...

Page 49: ...the current status of the valve which setpoint is selected for control the range of pressure measure ment whether or not the Adjust Pressure function is enabled and what Lock functions are enabled The OSW gives the exact operating condition of the ACX at any time The OSW is valid for all modes of ACX control whether controlling from the Serial or the Auxiliary port The Report command can be given ...

Page 50: ...ystem Diagnostic Word should be checked to verify this condition Character Selected Setpoint 0 Analog Setpoint 1 Setpoint 1 2 Setpoint 2 3 Setpoint 3 4 Setpoint 4 5 Setpoint 5 6 Setpoint 6 7 Setpoint 7 8 Setpoint 8 9 Setpoint 9 A Setpoint 10 Character Status 0 Controlling 1 Pressure Zeroing Selected and Controlling 2 Valve Open 3 Valve Opened Pressure Zeroing Selected 4 Valve Closed 5 Valve Closed...

Page 51: ... is the setpoint of interest The valid ASCII characters for the parameter are 0 through 10 for the RP command setpoints 0 through 10 and 41 through 45 for the R command setpoints 1 through 5 only See Table 28 for a complete list of valid commands Example Sending the following ASCII string RP3 or R43 this command valid only for setpoint 3 commands the ACX to report the phase parameters for setpoint...

Page 52: ...ntax RDT1 The ACX responds with DT1 xx where xx is between 0 and 100 seconds 9 14 REPORT RAMP FUNCTION STATUS This command reports the ramp function status Syntax RSR The ACX responds with RAMP DISABLED default or RAMP ENABLED 9 15 REPORT SECONDARY RAMP SETPOINT This command reports the value of the secondary ramp setpoint Syntax RPF Report Phase Setpoint 3 RP3 R43 PH3XXX XX Report Phase Setpoint ...

Page 53: ...accept either the industry standard syntax for setpoints 0 4 or the second syntax for setpoints 0 10 Table 29 Report Setpoint For valve angle analog setpoint control the R0 command responds as S0Vxx x This value is the valve angle Selection made with Pin 23 of the Auxiliary Port 9 19 REPORT SOFTWARE ID This command reports the software identification Syntax SID or R38 Description Command Response ...

Page 54: ...atio between the two CMs will determine the format of the pressure display 9 21 REPORT TRIP POINT This command reports the Trip Point for the specified relay Syntax RT parameter or R parameter The valid ASCII characters for the parameter are 1 or 2 for command RT parameter and 8 or 9 for command R parameter representing the two Trip Point relays Example Sending the following ASCII string RT2 or R9...

Page 55: ...x VID The ACX responds with the vendor product identification Celerity This is a non volatile read only command 9 24 HELP SCREEN To access the ACX s help screen send the following commands for help screen 1 or 2 for help screen 2 A brief description of each command will be listed This command should not be used while performing pressure control 9 0 _COMMANDS REPORT ...

Page 56: ...a Data Link Escape DLE ASCII 0x10 character is received This allows a unit to have sole access to the serial lines process multiple commands from the host computer and release control of the serial lines when interaction with the host is complete 10 2 UNIQUE DEVICE ADDRESS The all stations address is provided so that there is always an active address for any ACX at all times The all stations addre...

Page 57: ...tually in opera tion Consequently 2 or 4 wire network configuration is a matter of switch config uration and network wiring 10 4 MODIFYING THE RS 485 ADDRESS To change the RS 485 network communications address send the following command JAXX where XX is the new address The valid range is 1 7F hexadecimal The all stations address should only be used when no other ACX units are attached to the seria...

Page 58: ... characters that do not generate a serial output response from the ACX The ACX regards serial communication as a session that begins with the device address and ends with the DLE Any number of commands may be processed during a single session Once the DLE is received by the ACX the session is complete Note that the term acknowledgment refers to the general case of command acknowledgment This can b...

Page 59: ...it acknowledgment Transmit DLE Disable general receive enable address receive only Host Computer ACX Transmit Address Receive address If address received is device address begin receiving all characters Transmit Command 1 Receive command Transmit response if any Transmit acknowledgment Transmit Command 2 Receive Command Transmit response if any Transmit acknowledgment Transmit Command 3 Receive Co...

Page 60: ...signals such as open valve enable pressure control etc The ACX also provides the ability to set valve position with an analog input and provides status information on the open and closed positions of the throttle valve When interfacing to the Auxiliary Port analog signals are referenced to pin 1 analog ground Contact closure control signals are referenced to pin 13 digital ground Control signals a...

Page 61: ...losed Status Valve status output for the valve closed position This pin is internally opto isolated and is connected to the Valve Status Output Common pin when the valve is in the closed position Open collector rated 24 VDC 10 mA max 9 Valve Status Output Common The common pin for the valve Open and Closed status signals This pin is not connected internally 10 Not used Keyed pin 11 Hold Control Se...

Page 62: ...ct on Relay 2 When the pressure is below the setpoint for Relay 2 the relay will energize and change to the closed state 20 Valve Open Status Valve status output for the valve open position This pin is connected to the Valve Status Output Common pin when the valve is in the open position Open collector rated at 24 VDC 10 mA max 21 Not used Not used 22 CM Select High Low High In the High state the ...

Page 63: ...ed for OPEN and CLOSE control signals to function 11 2 2 Close Input Pin 24 CLOSE commands the valve to go to the closed position The CLOSE function is active when this pin is connected to digital ground HOLD must be deactivated 11 2 3 Open Input Pin 25 OPEN commands the valve to go to the open position The OPEN func tion is active when this pin is connected to digital ground HOLD must be deac tiv...

Page 64: ... digital ground the ACX references the analog setpoint to CM2 full scale This signal has no effect when switch S2 2 is in the default OFF position or when control is from the serial port 11 2 7 Digital Ground Pin 13 Digital Ground is used to logically activate or deactivate the contact clo sure input functions Any external device used to select digital functions must be connected to this pin 11 3 ...

Page 65: ...ut Select pin 23 to digital ground selects valve position control for the analog input The 0 10 VDC or 0 5 VDC analog input is proportional to 0 to 90 of valve position Hold Control Select pin 11 must be deactivated by connecting it to digital ground for this function to become active 11 4 3 Pressure Signal Output Pin 3 An electrically isolated output representing system pressure is available for ...

Page 66: ...nts which are directly proportional to the corresponding valve angle from 0 to 90 This signal must be referenced to the analog ground pin A signal voltage of 0VDC indicates a valve angle of 0 A signal voltage of 10VDC 5VDC user selectable indicates a valve angle of 90 11 0 _INTERFACE AUXILIARY ...

Page 67: ...Ms to Celerity for service RS 232 communications Fault in RS 232 cable and or connection Check cable connections Check cable continuity Mismatch in baud rate parity or stop bit settings Check settings ACX does not control pressure Pressure setpoint not set Program setpoint Setpoint too low throttle valve fully open Program a higher pressure setpoint Fault in Pressure Input CM cable s and or connec...

Page 68: ...7 E 69 45 40 28 F 70 46 41 29 G 71 47 42 2A H 72 48 43 2B I 73 49 44 2C J 74 4A 45 2D K 75 4B 46 2E L 76 4C 47 2F M 77 4D 0 48 30 N 78 4E 1 49 31 O 79 4F 2 50 32 P 80 50 3 51 33 Q 81 51 4 52 34 R 82 52 5 53 35 S 83 53 6 54 36 T 84 54 7 55 37 U 85 55 8 56 38 V 86 56 9 57 39 W 87 57 58 3A X 88 58 59 3B Y 89 59 60 3C Z 90 5A 61 3D Carriage Re 13 0D DLE 16 10 Line Feed 10 0A A _APPENDIX ...

Page 69: ...X All signal names are referenced to the ACX 5 2 3 8 7 SIGNAL COMMON TRANSMIT TX RECEIVE RX REQUEST TO SEND RTS CLEAR TO SEND CTS NO CONNECTION RJ 12 DB 9S RJ 12 to DB 9 RS 232 Adaptor Celerity Part No 55399 1 2 3 4 5 6 7 3 2 5 4 SIGNAL COMMON TRANSMIT TX RECEIVE RX REQUEST TO SEND RTS CLEAR TO SEND CTS NO CONNECTION DB 25S RJ 12 to DB 25 RS 232 Adaptor Celerity Part No 55398 1 2 3 4 5 6 RJ 12 COM...

Page 70: ... Enterprise Boulevard Allen TX 75013 USA Telephone 972 359 4000 Facsimile 972 359 4100 www celerity net For technical assistance contact Celerity Technical Support at 972 359 4000 Celerity is a trademark of Celerity Inc All other product or service names mentioned in this document may be trademarks of the companies with which they are associated System descriptions are typical and subject to chang...

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