Pfeiffer Vacuum MaxiGauge TPG 256 A PT G28 760 Operating Instructions Manual
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Pfeiffer Vacuum MaxiGauge TPG 256 A PT G28 760 Operating Instructions Manual

Pfeiffer Vacuum MaxiGauge TPG 256 A PT G28 760 Operating Instructions Manual

Maxigauge, vacuum measurement and control unit for compact gauges gauges
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A P A S S I O N F O R P E R F E C T I O N
TPG 256 A
MaxiGauge™, vacuum measurement and control unit for Compact
Gauges
Operating Instructions

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Summary of Contents for Pfeiffer Vacuum MaxiGauge TPG 256 A PT G28 760

  • Page 1 A P A S S I O N F O R P E R F E C T I O N TPG 256 A MaxiGauge™, vacuum measurement and control unit for Compact Gauges Operating Instructions...

  • Page 2: Validity

    This manual applies to products with part number: Validity • PT G28 760 with serial interfaces RS232C and RS422 • PT G28 761 with serial interfaces RS232C and RS422 and RS485 (addressable, isolated) and RS422 (isolated) The part number can be taken from the nameplate on the rear panel, where the interfaces can be connected as well (→...

  • Page 3: Table Of Contents

    Contents Validity Firmware Version Trademarks 1 Intended Use Technical Data 3 Safety 4 Commissioning 4.1 Personnel 4.2 Set-Up, Assembly 4.3 Power Connection 4.4 Connecting the Gauges to sensor 4.5 control Control Connector 4.6 RS 232/422 Pinout Connector for Serial Interfaces 4.7 RS 485/422 isol.
  • Page 4 Connection Diagrams 8.1.2 Connection Cable 8.1.3 Data Transmission 8.2 Mnemonics 8.2.1 Measurement Values 8.2.2 Display 8.2.3 Switching Functions 8.2.4 Parameters 8.2.5 Interfaces 8.2.6 Error Messages 8.2.7 Test Programs for Pfeiffer Vacuum Service Specialists Contents BG 5186 BEN / C (2013-12) MaxiGauge.om...
  • Page 5 9 Maintenance and Care 9.1 Personnel 9.2 Cleaning 9.3 Maintenance Accessories and Spare Parts Decommissioning Appendix Validity Table Conversion of Pressure Units Equipment Test Literature EC Declaration of Conformity For cross references to pages within this manual, the symbol (→  XY) is used, for references to other docu- ments, the symbol (→...

  • Page 6: Intended Use

    1 Intended Use The TPG 256 A TPG 256 A is a 6-port total pressure measurement and control unit for Pfeiffer Vacuum Com- pact Gauges. The unit has been engineered for use with the following gauge families * • TPR Pirani gauge •...
  • Page 7 228.5 mm Installed width 207 mm G Installed height 88 mm (2 height units) Figure 2: Pfeiffer Vacuum, D-35614 Asslar Nameplate Typ: F-No: The nameplate is located on the rear panel. Make sure that the voltage and frequency ratings con- form with the local power supply system.

  • Page 8: Technical Data

    2 Technical Data Mechanical data Dimensions → Figure 1 Weight 2.1 kg 19" rack installation  → Accessories, Power connection Voltage 90 ... 250 VAC / 50 ... 60 Hz Power consumption 60 VA Overvoltage category Protection class Unit connector IEC 320 C14 Power switch Rear panel...
  • Page 9 Figure 3: Logarithmic gauges Gauges Compact Pirani Gauge (Pirani gauge) Compact Pirani Capacitance Gauge (Pirani/Capacitance gauge) Compact Cold Cathode Gauge (Cold cathode gauge) Compact FullRange™ CC Gauge (Pirani/Cold cathode gauge) Compact Process Ion Gauge (Pirani/High pressure gauge) Compact FullRange™ BA Gauge (Pirani/Bayard-Alpert gauge) Technical data BG 5186 BEN / C...
  • Page 10 Compact Capacitance Gauge (Capacitive gauge) Compact Piezo Gauge (Piezoresistive gauge) Gauge connections Number Compatible gauges Pfeiffer Vacuum Compact [18] Gauges (→  [1] ... [18] TPR 250, TPR 260, TPR 261, Compact Pirani Gauges TPR 265, TPR 280, TPR 281...
  • Page 11 Measured values Measurement ranges →  Gauge Measurement error Gain error ≤0.2 % measurement signal Offset error ≤20 mV Measurement rate 100 / s Display rate 4 / s Filter time constant 2.1 s = 0.075 Hz) 320 ms (f = 0.5 Hz) tandard 100 ms (f...
  • Page 12 RS 232/422 RS422 (not isolated) Connector for relay switch contacts relay Power inlet 3-pin Reference for fuses inside the unit (replacement only by Pfeiffer Vacuum Service) Power switch Connectors for gauges sensor 1 ..sensor 6 Connector for control functions...
  • Page 13 Switching functions Number Gauge assignment User-programmable Response time 10 ms, if the measured value is near the setpoint. For bigger dif- ferences, take the filter time con- stant into consideration. Relay contacts Changeover switch, floating = 60 VDC / I = 3 A = 30 VAC / I = 3 A...
  • Page 14 Figure 5: DANGER Symbols for residual hazards Information on preventing any kind of physical injury. WARNING Information on preventing extensive equipment and environmental damage. Caution Information on correct handling or use. Disregard can lead to malfunctions or minor equipment damage. Figure 6: Symbol for special personal Skilled personnel...

  • Page 15: Safety

    3.3 Safety Information • Take into account the relevant safety regulations when doing installing and maintenance work. Pfeiffer Vacuum declines any liability, and the warranty 3.4 Responsibility and becomes null and void if the operator or third parties Warranty •...
  • Page 16 Figure 7: Setup as desktop unit Make sure to provide for proper ventilation when using the TPG 256 A as desktop unit. For this purpose, an acrylic glass stand can be ordered as accessory (→ Accessories  105). Figure 8: Use a con- Connection cable nection cable...

  • Page 17: Commissioning

    4 Commissioning 4.1 Personnel Skilled personnel The unit may be put into service by skilled and suitably trained persons only. There are two possibilities for incorporating the unit into 4.2 Set-Up, Assembly a switching cabinet according to DIN 41 494: a) Installation in a 19"...

  • Page 18: Power Connection

    Before switching the unit on make sure that the operat- 4.3 Power Connection ing voltage of the unit corresponds to the local line volt- age. The power ratings are indicated on the product nameplate on the rear panel of the unit. Use only a 3-conductor power cable with protective ground.
  • Page 19 Notes: Commissioning BG 5186 BEN / C (2013-12) MaxiGauge.om...
  • Page 20 Figure 9: Pin assignment Amphenol C91B, Gauge connector sensor 1 Identification 6-pin, female 2 GND 3 Measurement signal + 4 Measurement signal - 5 Screen 6 Vcc Front view Figure 10: Pin assignment D-Sub, high density, Control connector control 1 Analog output sensor 1 15-pin, female 2 Analog output sensor 2 3 Analog output sensor 3...

  • Page 21: Connecting The Gauges To Sensor

    4.4 Connecting the Caution Gauges to sensor Switch the unit off before connecting or removing any gauges. Connect the gauge to one of the six connectors sensor 1 … sensor 6 (PBR 260, IMR 265, CMR 27X and CMR 37X only to sensor 4 … sensor 6) on the rear panel of the unit by means of a shielded cable (electro- magnetic compatibility).

  • Page 22: Interfaces

    Figure 11: Pin assignment D-Sub, 9-pin, male RS 232/422 1 Chassis Pinout connector for serial 2 RXD (RS232C) interfaces 3 TXD (RS232C) 4 not connected 5 Signal Ground 6 RX+ (RS422) 7 RX- (RS422) 8 TX+ (RS422) Front view 9 TX- (RS422) Figure: 12 Pin assignment RJ45, 8-pin...

  • Page 23: Rs 485/422 Isol. Interface Port

    Connect the serial interface to the RS 232/422 pinout 4.6 RS 232/422 connector on the back of the unit by means of a shielded Pinout Connector cable (electromagnetic compatibility). for Serial Interfaces Connect the serial interface to the RS 485/422 isol. port 4.7 RS 485/422 isol.

  • Page 24: Operating Elements And Modes

    5 Operating Elements and Modes 5.1 Operating Elements Softkeys The TPG 256 A is operated with the five softkeys on the front panel (→ figure 14). The functions of these softkeys vary depending on the operating mode the unit is in. The current function is indicated by the LCD graphic display.
  • Page 25 Figure 14: Front panel 1 Mains power indicator (green LED): on / off 2 Display (LCD): Measured values and operation data 3 5 Softkeys (operating keys with varying functions) Figure 15: Power switch Operating elements and modes BG 5186 BEN / C (2013-12) MaxiGauge.om...
  • Page 26 Figure 16: Operating modes Measurement Mode Setpoint Mode General Parameter Mode Sensor Parameter Mode Sensor Control Mode Test Mode Operating elements and modes BG 5186 BEN / C (2013-12) MaxiGauge.om...

  • Page 27: Operating Modes (Overview)

    5.2 Operating Modes (Overview) «Measurement» In «Measurement» mode, the TPG 256 A displays either the measured value of one single gauge at a time in big characters or the measured values of all gauges simultaneously in small characters (→  28, 40). «Setpoint»...

  • Page 28: Measurement» Mode

    5.2.1 «Measurement» If the MaxiGauge is operated with linear gauges (CMR 261 … 375, APR 250 … 267), negative pressures Mode may be indicated. Possible causes: • negative drift • offset correction activated with positive offset Figure 17:   ...
  • Page 29 Figure 18:        «All» display CH 1 2.9E-02 mbar A¡ CH 2 244.5 mbar B¢ CH 3 1.3E-08 mbar C£ CH 4 9.9E-08 mbar degas D¤ CH 5 0.00530 mbar offset E¥ CH 6 no Sensor F¦...

  • Page 30: Setpoint» Mode

    5.2.2 «Setpoint» Mode Figure 19: «Setpoint» display ³´μ Control Sensor 3  Setpoint high 5.00E-05 mbar  Setpoint low 2.00E-05 mbar ¼½¾ UR-Control Relay next ®¯ ¬− Return Display Switching function selected (from A ... F) Controlling source (1 ... 6) of Control Sensor switching function C (→...

  • Page 31: General Parameter» Mode

    5.2.3 «General Para- meter» Mode Figure 20: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph 1 Decade Screensave 5 h Default Contrast next ®¯ ¬− Return Display Parameter input lock enabled or dis- Key-lock abled (→  48) Pressure unit (→...

  • Page 32: Sensor Parameter» Mode

    5.2.4 «Sensor Para- meter» Mode Figure 21: «Sensor Parameter» display ³´μ Type APR/CMR 1000 mbar óÅ Offset 157.6 mbar ÆÇÈ CAL-Factor 1.010 ÉÊË Filter standard Name CH 2 Sensor next ®¯ ¬− Return Display Measurement point selected (from 1 ... 6) Family of gauge ** connected / Type...

  • Page 33: Sensor Control» Mode

    5.2.5 «Sensor Control» Mode Figure 22: «Sensor Control» display Ò´Ô Control Hotstart ñìí Power on îïð Selfcontrol Ó½¾ OFF Threshold 9.00E-5 mbar Sensor next Return Display Measurement point selected (from 1 ... 6) Controlling source of measure- Control ment point 5 (→  71) Measurement point 5 is activa- ted when the unit is switched on Switching-off mode of measure-...

  • Page 34: Test» Mode

    5.2.6 «Test» Mode Figure 23: Program BG509730-K «Test» display EPROM EEPROM Interface Display WDT-Ctrl auto next Start Return Display Firmware version (→  109) Program RAM self-test (→  110) EPROM self-test (→  110) EPROM EEPROM self-test (→  110) EEPROM Display self-test (→...

  • Page 35: Display Formats And Pressure Units

    6 Display Formats and Pressure Units Both, exponential and floating point formats are used. 6.1 Display Formats The format is changed over automatically. Pressures indicated in «Pa» are displayed in exponential format only. Figure 24: ³´μ óÐ ¿À ³´μ Ò´Ô ³´μ...

  • Page 36: Pressure Units

    Whether a particular pressure unit can be displayed or 6.2 Pressure Units not depends on the gauge used. The TPG 256 A allows the selection of a specific pressure unit only if it is possible to display the pressure in that unit over the whole measurement range.

  • Page 37: Operation

    7 Operation 7.1 Personnel Skilled personnel The unit may only be operated by skilled and trained persons that fully understand the possible hazards re- lated to the corresponding application. Check that all cables and gauges have been correctly 7.2 Switching the Unit installed and that the specifications listed in the technical On and Off data have been met.
  • Page 38 After power ON, the unit: • automatically performs a self-test, and «TPG 256 A» is displayed • identifies the gauges connected • activates parameters that were in effect before the last power OFF • switches to the «Measurement» mode for the meas- urement point selected before the last power OFF •...

  • Page 39: Selecting The Operating Mode

    In the superset«Measurement» mode, you can call a 7.3 Selecting the menu of further operating modes by pressing the [Mode] Operating Mode softkey Select the desired mode by pressing the corresponding softkey: • [Setpoint] «Setpoint» mode • [Gen-Par] «General Parameter» mode •...

  • Page 40: Measurement» Mode

    In the superset «Measurement» mode, the unit displays 7.4 «Measurement» the measured values. If you are in another (lower) mode Mode and do not press any key for 1 minute, the unit returns automatically to the «Measurement» mode. (→ Overview «Measurement» mode  28). Figure 31: ³´μ...

  • Page 41: Switching The Gauge On/Off (Sen-On/Off)

    7.4.2 Switching the • Press the [ ] softkey to turn the selected Sen-off gauge off or the [ ] key to turn it on. Gauge On/Off Sen-on Sen-on/off Caution Turning a gauge on or off may affect the status of the relays.

  • Page 42: Setpoint» Mode

    In «Setpoint» mode, you can assign a controlling source 7.5 «Setpoint» Mode to a switching function and define the upper and lower thresholds. Additionally, you can select the behavior of the switching function in the event of an underrange. (→ Overview «Setpoint» mode  30). Figure 33: «Setpoint»...

  • Page 43: Assigning Measurement Points Control Sensor

    The upper parameter line « » shows 7.5.2 Assigning Control Sensor which measurement point is assigned to a switching Measurement function. Points Control Sensor The corresponding measurement point has to be as- signed to each switching function individually. In «Measurement» mode, all assignments are displayed simultaneously.

  • Page 44: Defining The Threshold Values (Setpoint)

    The upper and lower thresholds are defined in the sec- 7.5.3 Defining the ond and third parameter line. Threshold Values Setpoint Figure 35: «Setpoint» display ³´μ Control Sensor 3  Setpoint high 5.00E-05 mbar  Setpoint low 2.00E-05 mbar ¼½¾ UR-Control Relay next...
  • Page 45 Figure 36: Pressure Threshold values of a switching function Setpoint high Setpoint low Time Figure 37: CH 1 2.9E-02 mbar A¡ Inverse representation of the CH 2 4.16E-01 mbar B¢ C£ CH 3 1.3E-08 mbar selected switching function ( CH 4 9.9E-11 mbar D¤...

  • Page 46: Underrange Control (Ur-Control)

    Logarithmic gauges: The minimum hysteresis between the upper and lower threshold is at least 10% of the lower threshold. This prevents an unstable state. If you set the upper threshold lower than the lower one, this minimum hysteresis is automati- cally applied.
  • Page 47 Figure 38: «Setpoint» mode display ³´μ Control Sensor 3  Setpoint high 5.00E-05 mbar  Setpoint low 2.00E-05 mbar ¼½¾ UR-Control Relay next ®¯ ¬− Return Enabling/disabling the underrange control: • Select the «Setpoint» mode (if applicable) (→  39) •...

  • Page 48: General Parameter» Mode

    In «General Parameter» mode, you can define the sys- 7.6 «General Para- tem parameters for all connected gauges together. meter» Mode (→ Overview «General Parameter» mode  31). Figure 39: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph...

  • Page 49: Selecting The Pressure Unit (Unit)

    The unit can display the following pressure units: 7.6.2 Selecting the (milli)bar, Torr, and Pascal. Pressure Unit Unit Figure 40: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph 1 Decade Screensave 5 h Default Contrast next ®¯...

  • Page 50: Display Resolution (Digits)

    For observing even fine measurement value fluctuations, 7.6.3 Display Resolution the display can be increased from 2 to 3 digits. The Digits measured value will thus have a finer resolution. (Only effective for logarithmic gauges.) Figure 41: Key-lock Interface RS-485 «General Parameter»...

  • Page 51: Bargraph (Bargraph)

    The bargraph allows quick assessment of the measured 7.6.4 Bargraph value and visual observation of the measurement Bargraph changes (trend). Figure 42: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph 1 Decade Screensave 5 h Default Contrast next...

  • Page 52: Restoring Default Values (Default)

    This parameter allows to restore all user defined / modi- 7.6.5 Restoring Default fied parameters to the factory setting. Default Values ( Figure 43: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph 1 Decade Screensave 5 h Default Contrast next...

  • Page 53: Defining An Interface (Interface)

    The serial interfaces are used for external control of the 7.6.6 Defining an unit as well as for transfer of measured data and modi- Interface fication of parameters (→  13). The desired interface is Interface defined with the following parameter: Figure 44: Key-lock Interface...

  • Page 54: Defining The Baud Rate (Baudrate)

    This parameter allows to set the baud rate for the serial 7.6.7 Defining the Baud interface defined as « » parameter value. Baudrate Interface Rate ( Figure 45: Key-lock Interface RS-485 «General Parameter» display Baudrate 19200 Unit mbar Address Digits Bargraph 1 Decade Screensave 5 h...

  • Page 55: Defining The Node Address (Address)

    The RS485 interface allows to set up a network of max. 7.6.8 Defining the Node 32 display units per interface. The node (or device) ad- Address dress can be set between 0 and 31. Address Figure 46: Key-lock Interface RS-485 «General Parameter»...

  • Page 56: Screensave (Screensave)

    In order for the life of the CFL lamp to be prolonged 7.6.9 Screensave (half-life period approx. 20'000 hours), the backlighting Screensave of the LC display can be switched off automatically after an adjustable delay of 1 ... 99 hours while the LCD re- mains on.

  • Page 57: Display Contrast (Contrast)

    This parameter allows to set the contrast of the LC dis- 7.6.10 Display Contrast play within a numeric range of 0 ... 20 according to your Contrast individual requirements, such as ambient conditions and viewing angle. Figure 48: Key-lock Interface RS-485 «General Parameter»...

  • Page 58: Sensor Parameter» Mode

    In «Sensor Parameter» mode, you can define the pa- 7.7 «Sensor Para- rameters relevant for each measurement point. meter» Mode (→ Overview «Sensor Parameter» mode  32). Figure 49: «Sensor Parameter» display ³´μ Type APR/CMR 1000 mbar óÅ Offset 157.6 mbar ÆÇÈ...

  • Page 59: Gauge Identification (Type)

    The TPG 256 A automatically identifies any connected 7.7.2 Gauge Identifi- Pfeiffer Vacuum gauges. For linear gauges, a Type cation ( measurement range is displayed additionally as pa- rameter value * behind the gauge type ** . This pa- rameter value has to be adjusted according to the con- nected gauge type.

  • Page 60: Offset Function (Offset) (Zeroing)

    The offset function allows the zero of linear gauges to be 7.7.3 Offset Function aligned to the currently measured value (uncorrected Offset ) (zeroing) outputsignal of the gauge) within a range of -5 ... +110% of the Full Scale setting. It affects the: ...
  • Page 61 Procedure for the second method: • at a pressure lower than the lower limit of the mea- surement range of the gauge, activate the offset function (« ») • press the [ ] softkey to select the previously next saved offset value (at the right hand side of « »);...
  • Page 62 When the offset function is activated, the stored offset value is subtracted from the currently measured value. Example: ³´μ Type APR/CMR 1000 mbar óÅ Offset 10.3 mbar ÆÇÈ CAL-Factor 1.000 ÉÊË Filter standard Name CH 2 Sensor next ®¯ ¬− Return Currently Stored...

  • Page 63: Activating The Degas Routine (Degas)

    Contamination of the electrode system of the Compact 7.7.4 Activating the Fullrange™ BA Gauge (PBR 260) can cause instabilities Degas Routine of the measured values. Degas The degassing routine is used for cleaning the electrode system by heating the electron collector grid to approx. 700 °C by electron bombardment.

  • Page 64: Pirani Range Extension (Range-Ext)

    The display and setpoint adjustment range of the PCR 7.7.5 Pirani Range und TPR gauges can be extended. Extension Range-Ext Figure 53: «Sensor Parameter» display óÐ Type ÆÑÁ Range-Ext ÉÊÎ CAL-Factor 1.010 Á Filter standard Name CH 4 Sensor next ®¯...

  • Page 65: Setting The Calibration Factor (Cal-Factor)

    The calibration function allows to adjust the measured 7.7.6 Setting the value of a gauge. It is predominantly used for correcting Calibration Factor the measured values of logarithmic gauges for gases Cal-Factor other than N and for correcting the full scale values of linear gauges.

  • Page 66: Setting The Measurement Value Filter (Filter)

    The measurement value filter allows better evaluation of 7.7.7 Setting the unstable or faulty measurement signals. It affects the: Measurement  display Value Filter Filter  switching functions (threshold value display)  analog outputs of the unit  serial interfaces Figure 55: «Sensor Parameter»...
  • Page 67 Filter Slow Choose «slow» if the display and the switching functions should not respond to small changes in measured val- ues. As a consequence, the unit will respond more slowly to changes in measured values. Figure 57: Measurement value filter Slow Filter Fast...

  • Page 68: Defining The Measurement Point Name (Name)

    The measurement point name is shown on the display 7.7.8 Defining the as CH 1, CH 2 ... CH 6 (CH = channel). Measurement Point Name Name ( These 4 characters can be overwritten with any combi- nation of characters comprising letters, digits or spaces. This may be useful, for instance, for differentiating gauges in a system or for certain functional designa- tions.

  • Page 69: Sensor Control» Mode

    In «Sensor Control» mode * , you can define how cold 7.8 «Sensor Control» cathode, and FullRange™ and ionization gauges are Mode turned on/off by other gauges or control devices. This parameter is not available for all gauge types (→ Validity table  108). (→...
  • Page 70 Figure 60: Table «Sensor Control» Controlled Controlling source sensor TPR/PCR IMR / PBR 1 ... 1E-3* 1 ... 1E-5 IMR/ 1 ... 1E-3* 1 ... 1E-5 1E-2 ... 1E-3* 1E-2 ... 1E-5 1E-2 ... 5E-10 1E-2 ... 1E-3* 1E-2 ... 1E-5 1E-2 ...

  • Page 71: Selecting The Controlled Gauge (Sensor)

    The controlled gauge to which the following parameters 7.8.1 Selecting the access is shown as a big figure on the left of the display. Controlled Gauge Sensor Figure 61: Ò´Ô Control Sensor 6 «Sensor Control» display ñìí Threshold 1.00E-05 mbar îïð...

  • Page 72: Setting The «Sensor 1

    Setting the parameters: 7.8.3 Setting the « Sensor 1 » • Select « » « » as controlling Control Sensor 1 Control source (→  71) • Press the [ ] softkey to select « » next ON Threshold • Press the [ ] or [ ] softkey to increase / decrease ®¯...

  • Page 73: Setting The «Manual» Control

    You can turn on the controlled gauge with the [ 7.8.5 Setting the Sen-on softkey and turn it off with the [ ] softkey. If a « Manual » Control Sen-off corresponding setpoint has been defined, the gauge can also be turned off automatically in the event of a pres- sure rise.

  • Page 74: Setting The «Hotstart» Control

    When the unit is switched on, the controlled gauge is 7.8.6 Setting the turned on automatically, and when the unit is switched « Hotstart » off, it is turned off, too. However, the controlled gauge Control can also turn off itself in the event of a pressure rise (Selfcontrol).

  • Page 75: Status Messages

    Status messages are not to be confounded with error 7.9 Status Messages messages. They only indicate the system status. If status messages are displayed instead of measured values, the received measurement signal is faulty. Figure 65: CH 1 no Sensor A¡...
  • Page 76 >"range" Status message IKR PKR APR IMR PBR Meaning       Overrange <"range" Status message IKR PKR APR IMR PBR Meaning       Underrange Sensor error 1 Status message IKR PKR APR IMR PBR Meaning ...

  • Page 77: Error Messages

    Error messages are flashing in the display bar above the 7.10 Error Messages middle softkey: Irregularities or disturbances have oc- curred. The error relay switches over (→  22). Figure 67: ³´μ óÐ ¿À ³´μ Ò´Ô ³´μ ¿À A¡ EEPROM error in óÅ...
  • Page 78 Figure 68: Display Possible cause Remedy Error message table No display Power cable interrupted Check the power cable Mains voltage missing / Check mains too high / too low voltage Display Screensave activated Press a softkey dark (→  56) Lamp defective (life) Replace the lamp Operating system error...
  • Page 79 Display Possible cause Remedy Check according Sensor error to the following examples Acknowledging error messages (→  77) Pirani, Pirani/Capacitance: No supply Check supply and cable Measurement ele- Maintain or ex- ment faulty change the gauge FullRange™ Gauge: No supply Check supply and cable Pirani measurement...

  • Page 80: Communication

    8 Communication Serial interfaces are used for communication between 8.1 Serial Interfaces the TPG 256 A and a computer (HOST). A terminal can be connected for test purposes. 8.1.1 Connection Diagrams Pin assignment RS232C/422 D-Sub, 9-pin, male Serial interface port Chassis RXD (RS232C) TXD (RS232C)

  • Page 81: Connection Cable

    8.1.2 Connection Cable RS232C/422 • Use shielded cable only Serial interface port Caution Only one of the two interfaces may be connected. MaxiGauge RS 422 isol. Chassis Chassis MaxiGauge RS 432 Chassis Chassis RX– RX– Signal GND TX– TX– RS485/422I isol. •...

  • Page 82: Data Transmission

    The data transmission is bi-directional (master-slave). 8.1.3 Data Transmission Data format 1 Start bit, 8 data bits, 1 stop bit, no parity bit, no hardware handshake Abbreviations and Symbol Meaning symbols used HOST Computer or terminal [...] Optional elements ASCII American Standard Code for Information Interchange Dec.
  • Page 83 Flow control After each ASCII string the HOST must wait for a con- firmation (<ACK> or <NAK>) <CR><LF> to ensure that the input buffer of the TPG 256 A is empty. The input buffer of the HOST must have a capacity of at least 64 bytes.
  • Page 84 <ENQ> must be transmitted to request the transmission of an ASCII string. Additional strings, according to the last selected mnemonic, are read out by repetitive trans- mission of <ENQ>. If <ENQ> is received without a valid request, the error status is transmitted. HOST TPG 256 A Explanation Reception protocol...
  • Page 85 Error processing All messages received are verified in the TPG 256 A. If an error is detected, a negative acknowledgment <NAK> is output. The fault condition can subsequently be read out (→  98). HOST TPG 256 A Explanation Error recognition protocol Mnemonics [and parameters] HOST transmits...

  • Page 86: Mnemonics

    8.2 Mnemonics →  Baud rate Baud rate Calibration factor Sensor x Calibration factor sensor x (1 ... 6) Measurement point names Measurement point names Display control Bargraph Bargraph Display control Contrast Display control contrast Display control Digits Display digits Display control Screensave Display control screensave Degas...

  • Page 87: Measurement Values

    8.2.1 Measurement Values Sensor on / off Transmit: SEN [,x,x,x,x,x,x] <CR>[<LF>] Sensors 1 ... 6 x = 0 ─> No change 1 ─> Off 2 ─> On Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x,x,x,x,x,x <CR><LF> Status Sensors 1 ... 6 Not all sensor types can be switched on and off.
  • Page 88 Sensor control Transmit: SCx [,x,x,x.xE±yy,x.xE±yy] <CR>[<LF>] Switching off value Switching on value Switch off the controlling source of the sensor x = 0 ─> Sensor 1 1 ─> Sensor 2 2 ─> Sensor 3 3 ─> Sensor 4 4 ─> Sensor 5 5 ─>...
  • Page 89 Status and pressure Transmit: PRx <CR>[<LF>] Sensor x = 1 ... 6 Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x,x.xxxEsx <CR><LF> Measurement value (always exponential format) Status x = 0 ─> Measurement data okay 1 ─> Underrange 2 ─> Overrange 3 ─> Sensor error 4 ─>...

  • Page 90: Display

    All channel names are ASCII strings (A ... Z; 0 ... 9). Blanks (spaces) are ignored. Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xxxx,xxxx,xxxx,xxxx,xxxx,xxxx <CR><LF> Measurement point names 8.2.2 Display Unit of The selected measurement unit has only an measurement effect on the display, i.e. it does not affect the accuracy of the measurement.

  • Page 91: Switching Functions

    Contrast Transmit: DCC [,xx] <CR>[<LF>] Contrast x = 0 ... 20 ─> Contrast dark ... light (Default = 10 (med.)) Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xx <CR><LF> Contrast Screensave Transmit: DCS [,xx] <CR>[<LF>] Screensave x = 0 ─> Screensave off (default) 1 ...

  • Page 92: Parameters

    Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x,x.xxEsx,x.xxEsx <CR><LF> Upper threshold Lower threshold Sensor (source) Set point status Transmit: SPS <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x,x,x,x,x,x <CR><LF> Set point A ... F x = 0 ─> off 1 ─> on Underrange control Transmit: PUC [,x,x,x,x,x,x] <CR>[<LF>] Underrange control A ...
  • Page 93 Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x,x,x,x,x,x <CR><LF> Range extension Entry lock function Transmit: LOC [,x] <CR>[<LF>] Entry lock function x = 0 ─> off (default) 1 ─> on Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x <CR><LF> Entry lock function Filter time constants Transmit: FIL [,x,x,x,x,x,x] <CR>[<LF>] Filter time constant sensors 1 ...
  • Page 94 Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: x.xxx <CR><LF> Calibration factor Offset correction Transmit: OFC [,x,x,x,x,x,x] <CR>[<LF>] Offset correction sensors 1 ... 6 x = 0 ─> off (default) 1 ─> activated 2 ─> actual measurement value = offset value Receive: <ACK><CR><LF> Transmit: <ENQ>...

  • Page 95: Interfaces

    Degas Transmit: DGS [,0,0,0,x,x,x] <CR>[<LF>] 0 ─> Degas off 1 ─> Degas on Sensors 1 … 3: no degas Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: 0,0,0,x,x,x <CR><LF> Degas status Default Transmit: SAV [,1] <CR>[<LF>] Activate the factory setting Receive: <ACK><CR><LF> 8.2.5 Interfaces Interface This functions is only useful if several interfaces are connected to the unit.
  • Page 96 In order not to interrupt the communication, set the HOST to the same interface as the TPG 256 A. Receive: x <CR><LF> Interface Baud rate Transmit: BAU [,x] <CR>[<LF>] Baud rate x = 0 ─> 300 baud 1 ─> 1200 baud 2 ─>...
  • Page 97 Do not transmit any LINE FEEDS (<LF>) via the RS485 half duplex line for fear they could cause data collisions on the bus. The RS232C, RS422, RS422I and RS485 (fullduplex) interfaces permit transmitting LINE FEEDS (<LF>). However, not transmitting them makes data transmission faster.

  • Page 98: Error Messages

    8.2.6 Error Messages Error status Transmit: ERR <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xxxxx,xxxxx <CR><LF> Error status xxxxx = 0 ─> No error 1 ─> Sensor 1: Measurement error 2 ─> Sensor 2: Measurement error 4 ─> Sensor 3: Measurement error 8 ─>...

  • Page 99: Test Programs For Pfeiffer Vacuum Service Specialists

    8.2.7 Test Programs for Some test programs take several seconds to Pfeiffer Vacuum transmit a report signal. Service Specialists Once a test program is started, the «Test» mode remains active until the unit is switched off. Program version Transmit: PNR <CR>[<LF>] Receive: <ACK><CR><LF>...
  • Page 100 Keyboard test Transmit: TKB <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xx <CR><LF> xx = 1 ─> Bit 0 = 1 Key 1 pressed 2 ─> Bit 1 = 1 Key 2 pressed 4 ─> Bit 2 = 1 Key 3 pressed 8 ─>...
  • Page 101 EEPROM test Caution This test should not be continually repeated (life time of the EEPROM). Transmit: TEE <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xxxxx,xxxxx <CR><LF> Error status →  98 Test A/D converter identification inputs Transmit: TAI <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ>...
  • Page 102 Sensor identification Transmit: TID <CR>[<LF>] Receive: <ACK><CR><LF> Transmit: <ENQ> Receive: xxxxxxxxx,xxxxxxxxx, ... ,xxxxxxxxx <CR><LF> Identification sensors 1 ... 6 xxxx = TPR/PCR (Pirani Gauge or Pirani Capacitance Gauge) IKR9 (Cold cathode to 10 mbar) IKR11 (Cold cathode to 10 mbar) (FullRange™...

  • Page 103: Maintenance And Care

    9 Maintenance and Care No special skills are required for care and cleaning of the 9.1 Personnel external equipment surfaces. Skilled personnel Persons cleaning the inside of the unit with com- pressed air need to be informed on the dangers in- herent in handling compressed air.

  • Page 104: Maintenance

    The unit requires no special maintenance except for the 9.3 Maintenance above cleaning work. For maintenance of the gauges, please consult the corresponding documents →  [1] ... [18]). Maintenance and care BG 5186 BEN / C (2013-12) MaxiGauge.om...

  • Page 105: Accessories And Spare Parts

    10 Accessories and Spare Parts When ordering accessories and spare parts, always mention: • all information on the product nameplate • description and ordering number according to the list Sensor cables Ordering number Sensor cable for connection to compact gauge 3 meters, complete PT 448 250 -T 6 meters, complete...
  • Page 106 Other articles Ordering number Acrylic glass stand for bench top unit PT 441 483 IF 256 RS485/422 interface (retrofit set) PT 441 240 -T RI 256 Relay interface PT 441 490 -T GS 250 Compact Gauge simulator PT 583 066 -T Figure 70: Acrylic glass stand Accessories and spare parts...

  • Page 107: Decommissioning

    11 Decommissioning The owner is responsible for the disposal of the unit. He shall • either return it, freight prepaid, to a Pfeiffer Vacuum Service Center • or give it to a licensed, public or private disposal company • or reuse, recycle, or dispose of it in conformance with...

  • Page 108: Appendix

    Appendix Validity Table Parameter Gauge logarithmic linear Measurement Mode     Sen-On Sen-off Setpoint Mode       Control Sensor       Setpoint high       Setpoint low ...

  • Page 109: B: Conversion Of Pressure Units

    Conversion of Pressure Units mbar Torr μbar mTorr * 750×10 14.5 mbar 0.75 14.5×10 7.5×10 0.75 14.5×10 μbar 7.5×10 14.5×10 7.5×10 14.5×10 Torr 1.33×10 1.33 1.33×10 0.133 1000 19.3×10 mTorr 1.33×10 1.33×10 1.33 0.133 1.33×10 19.3×10 6.89×10 68.9 68.9×10 6890 6.89 51.7 51.7×10...
  • Page 110 (software) version. Its last digit stands for the index: « » or « ». This informa- tion is always useful when contacting Pfeiffer Vacuum in case of a fault. Test of the data memory. The test is run automatically («...
  • Page 111 Display Test of the RAM display memory. The test is run auto- matically (« » is displayed). The contrast changes busy progressively to bright and dark twice. If the test has been successful, « », if not, « » is dis- passed error played.
  • Page 112 (manual) A relay function can also be tested manually (see « automatic»): • Press the [ ] softkey to select the « » pa- next rameter • Press the [ ] softkey to interrupt the automatic Relay test routine and select a particular relay by repeatedly briefly pressing the [ ] softkey Relay...

  • Page 113: D: Literature

     [1] www.pfeiffer-vacuum.net Literature Operating Instructions Compact Pirani Gauge TPR 261 BG 5175 BEN Pfeiffer Vacuum GmbH, D-35614 Asslar, Deutschland  [2] www.pfeiffer-vacuum.net Operating Instructions Compact Pirani Gauge TPR 265 BG 5174 BEN Pfeiffer Vacuum GmbH, D-35614 Asslar, Deutschland  [3] www.pfeiffer-vacuum.net...
  • Page 114  [8] www.pfeiffer-vacuum.net Operating Instructions Compact Cold Cathode Gauge IKR 261 BG 5153 BEN Pfeiffer Vacuum GmbH, D-35614 Asslar, Deutschland  [9] www.pfeiffer-vacuum.net Operating Instructions Compact Cold Cathode Gauge IKR 270 BG 5008 BEN Pfeiffer Vacuum GmbH, D-35614 Asslar, Deutschland ...
  • Page 115 Compact Capacitance Gauge CMR 261, CMR 262, CMR 263, CMR 264, CMR 271, CMR 272, CMR 273, CMR 274, CMR 275 BG 5161 BEN Pfeiffer Vacuum GmbH, D-35614 Asslar, Deutschland  [16] www.pfeiffer-vacuum.net Operating Instructions Compact Piezo Gauge APR 250, APR 260,...

  • Page 116: Ec Declaration Of Conformity

    EC Declaration of Conformity We, Pfeiffer Vacuum, hereby declare that the equipment mentioned below complies with the provisions of the Di- rective relating to electrical equipment designed for use within certain voltage limits 2006/95/EC and the Direc- tive relating to electromagnetic compatibility...
  • Page 117 Notes BG 5186 BEN / C (2013-12) MaxiGauge.om...
  • Page 118 A P A S S I O N F O R P E R F E C T I O N Pfeiffer Vacuum stands for innovative and custom Vacuum solutions vacuum solutions worldwide, technological perfection, from a single source competent advice and reliable service.

This manual is also suitable for:

Maxigauge tpg 256 a pt g28 761

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