Halma ALICAT SCIENTIFIC PCD Operating Manual Download Page 1

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OPERATING MANUAL

FOR DUAL-VALVE PRESSURE

CONTROLLERS

Models PCD · PCDS · PCD3 · PCD3S · IVCD · EXTSEN

Summary of Contents for ALICAT SCIENTIFIC PCD

Page 1: ...OPERATING MANUAL FOR DUAL VALVE PRESSURE CONTROLLERS Models PCD PCDS PCD3 PCD3S IVCD EXTSEN...

Page 2: ...31 0 26 203 1651 Recalibrate your pressure controller every year Annual calibration is required to ensure the continued certainty of readings and to extend the Limited Lifetime Warranty page 45 Fill...

Page 3: ...ollers This includes devices configured with corrosion resistant materials PCDS PCD3S devices with a remote sensing line PCD3 PCD3S a remote sensor EXTSEN large pneutronics valves PCPD hammer head dua...

Page 4: ...D 10 Power and Signal Connections 11 RS 232 or RS 485 Digital Signals 12 Engineering Units 13 Option Color TFT Display 14 Navigation Customization 15 Main Menu 15 Taring 15 Control Menus 16 Changing t...

Page 5: ...s Floating Point Numbers 32 Sending Setpoints as Integers 32 Quick Command Guide 33 Troubleshooting 34 Maintenance 37 Cleaning 37 Recalibration 37 Engineering Units 38 Pinouts 39 8 Pin Mini DIN Defaul...

Page 6: ...ance and connections may differ 0 0000 MENU PSID TARE SETPT 0 0000 Dif Press PSID 0 0000 I O Port shape varies DC In Light Switch Controls Inlet Valve Outlet Valve Display Flow Body PCD3 Units Remote...

Page 7: ...he button engineering units which are the units being displayed These can be individually configurable using the front display page 25 Chooses the pressure engineering units page 25 TARE PRESS tares t...

Page 8: ...leakage but do not wrap the first two threads This will help prevent tape getting into the stream No tape is needed for face seal fittings When changing fittings carefully clean the port threads Warn...

Page 9: ...e differential pressure between two points in the system These devices have two ports located on the front face of the unit for connection to two points in the system where the differential pressure i...

Page 10: ...r pressure controller with liquids unless specifically ordered for this purpose Dual Valve Integrated Vacuum Controllers IVCD IVCDs are similar to our PCD Series absolute pressure controllers in funct...

Page 11: ...9 and DB15 pinouts see page 39 or visit alicat com pinouts Pin Cable Color Function 1 Black Not connected Optional 4 20 mA primary output signal 2 Brown Static 5 12 Vdc Optional Secondary analog outpu...

Page 12: ...ry analog output signal which is linear over its entire range For ranges that start at 0 Vdc a zero pressure condition is indicated at approximately 0 010 Vdc Full scale pressure is indicated by the t...

Page 13: ...r of the screen pressing that measurement s button again will bring up a menu to modify either the button engineering units or the device engineering units If the device and button engineering units a...

Page 14: ...symbol in selections on monochrome display Press the Alicat logo button to turn off the color display backlight located below the row of three buttons under the screen The pressure controller remains...

Page 15: ...he device a zero reference Auto tare automatically tares when a zero setpoint is set for a short time but auto tare is not recommended for pressure controllers in most situations How to Manually Tare...

Page 16: ...not editable via the front panel if the source is analog BACK returns to the Main Menu selection previous page ADV CONTROL moves to the Advanced Control menu below MAIN exits to the Main Display page...

Page 17: ...ns to the Advanced Control Menu page 16 SETPT LIMITS Sets upper and lower setpoint limits page 19 MAIN Exits to the Main Display page 7 Control Deadband Menu Control Advanced Control Control Options D...

Page 18: ...is set to Serial Front Panel the controller will accept input from either the front panel or an RS 232 RS 485 connection Neither source is a subordinate of the other so the controller will accept the...

Page 19: ...cted with an error When using an analog setpoint signal setpoints that are outside of the setpoint limits are treated as if they were at the nearest limit If you request a setpoint that is below the l...

Page 20: ...ng function independently for changes that require increases or decreases to achieve the new setpoint For example you can enable ramping up to a pressure setpoint to prevent pressure from building too...

Page 21: ...have no effect Menu Control Setpoint Ramp DELTA sets the change in pressure permitted in the time interval TIME UNITS selects the unit of time for calculating the ramp rate TIME sets the time over whi...

Page 22: ...may help The LOOP SETUP Menu lets you choose the closed loop control algorithm and adjust the gain settings for the proportional integral and derivative variables Menu Control Advanced Control Loop Se...

Page 23: ...change in the system This often results in slowing the system down to minimize overshoot and oscillations Troubleshooting valve performance with PD I tuning The following issues can often be resolved...

Page 24: ...to diagnose issues over the phone PAGE displays the next page of register values Menu About Device State EDIT EDIT REGSTR allows the user to edit any register values on the device This can also be don...

Page 25: ...of engineering units Button Engineering Units Changes the units on the front display only Device Engineering Units Changes the units on the front display and serial data frame 1 Basic Configuration Me...

Page 26: ...y and enable screen rotation LCD CONTRAST sets the contrast level of the display ranging from 0 31 on monochrome displays and 0 11 on color displays Press reset to revert to the default contrast level...

Page 27: ...of digits of pressure readings to display on screen and in the serial data frame Older devices typically had one less significant digit and newer devices can be set to match BACK returns to the Advan...

Page 28: ...when SET is selected Selecting as the Unit ID will set the controller to streaming mode when you exit the menu page 30 NOTE Devices equipped with Modbus RTU will also have a Modbus ID that can be set...

Page 29: ...to your computer then in most cases it will recognize your USB as a virtual COM port If it does not download the appropriate USB device driver at alicat com drivers and note the COM port number as fo...

Page 30: ...is unique Streaming Mode In streaming mode your device continuously and automatically sends a line of live data at regular intervals Only one unit on a COM port may be in streaming mode at a time To...

Page 31: ...Example ap Absolute pressure devices cannot tare Collecting Pressure Data Collect live pressure data by typing the unit ID command or by setting your pressure controller to streaming Each line of data...

Page 32: ...of 15 00 PSIG Sending Setpoints as Integers In this method your controller s full scale range FS is represented by a value of 64000 and a zero setpoint is represented by 0 To calculate your intended...

Page 33: ...aw91 number of milliseconds New setpoint as setpoint as floating point New setpoint a setpoint as integer where 64000 is full scale Hold valve s at current position ahp Hold valve s closed ahc Cancel...

Page 34: ...The analog output signal indicates values lower than what appears on my instrument s display Action Analog signal voltage degrades over long distances You can minimize this effect by using wires with...

Page 35: ...trollers The pressure controller is internally compensated for many situations so you can use it side ways on its back or upside down For upside down installations you may want to rotate the display 1...

Page 36: ...e as your controller see page 28 2 Check the pressure controller unit s serial ID also on page 28 3 Check the pinout see page 39 or online at alicat com pinouts 4 Make sure the COM number matches the...

Page 37: ...her foreign material has entered your device do not take apart the flow body to clean it as this will negate its NIST traceable calibration Please contact us see page 2 for cleaning Recalibration The...

Page 38: ...ury at 0 C mmH2OA mmH2OG mmH OD millimeter of water at 4 C NIST conventional mmH2OA mmH2OG mmH2OD millimeter of water at 60 C cmH2OA cmH2OG cmH2OD centimeter of water at 4 C NIST conventional cmH2OA c...

Page 39: ...Vdc 0 10 Vdc or basic alarm 3 Red Serial RS 232RX Input Signal Optional RS 485 A 4 Orange Analog Setpoint Input 5 Yellow Serial RS 232TX Output Signal Optional RS 485 B 6 Green 0 5 Vdc Analog Out Opti...

Page 40: ...TX RS 485 B 3 RS 232RX RS 485 A 4 Analog Setpoint Input 5 Ground common for power communications and signals 6 Analog Out voltage or current as ordered Note The availability of different output signal...

Page 41: ...Out 2 RX or A TX or B NC Power In 2 Analog Out Analog Out Analog Out Analog Out Analog In 3 Power In Ground Analog In Power In Analog Out 4 Ground Power In RX or A Ground NC 5 Ground Ground Analog Out...

Page 42: ...l RS 485 A 4 Analog Setpoint Input Analog Setpoint Input 5 Serial RS 232 TX signal Optional RS 485 B Serial RS 232 TX Signal Optional RS 485 B 6 Static 5 12 Vdc Optional Secondary analog output 4 20 m...

Page 43: ...ut 2 Ground Ground 10 Ground NC Ground Analog Out 2 NC Ground Ground 11 Analog Out 2 NC Analog Out 2 Power In Ground Analog Out 2 Analog Out 2 12 NC Analog Out 2 NC Ground Ground NC RX or A 13 RX or A...

Page 44: ...Directive or Group II Category 3G equipment ATEX certification is indicated by the product label and not by the statements in this or any accompanying documentation To comply with CSA and ATEX certif...

Page 45: ...overed by this warranty Alicat Scientific does not recommend warrant or assume responsibility for the use of the Products in life support applications or systems Alicat s warranties as herein above se...

Page 46: ...tion Manufacturer information Device state Diagnostic Information Tares page 15 How and when to tare Tare pressure Basic config page 25 Device units Pressure Advanced setup page 26 Sensor setup Displa...

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