Pfeiffer Vacuum TPG 256 A User manual

Operating manual
BG 805 186 BE / B (2005-07) 1
TPG 256 A
Vacuum measurement and control unit
for Compact Gauges
MaxiGauge™

2BG 805 186 BE / B (2005-07) MaxiGauge.om
This manual applies to products with part number:
• 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 (→12).
This manual is based on firmware version:
• BG 509 730 -I
If your unit does not behave as described in this docu-
ment, please check whether it is equipped with this firm-
ware version (→109).
Enter the firmware version number of your unit in the
space provided below:
• BG ..................... ..................... -.......
MaxiGauge™ INFICON GmbH
FullRange™ INFICON GmbH
We reserve the right to make engineering changes with-
out notice.
Validity
Firmware Version
Trademarks

BG 805 186 BE / B (2005-07) MaxiGauge.om Contents 3
Contents
Validity 2
Firmware Version 2
Trademarks 2
1 Intended Use 6
2 Technical Data 8
3 Safety 15
4 Commissioning 17
4.1 Personnel 17
4.2 Set-Up, Assembly 17
4.3 Power Connection 18
4.4 Connecting the Gauges to sensor 21
4.5 control Control Connector 21
4.6 RS 232/422 Pinout Connector for
Serial Interfaces 23
4.7 RS 485/422 isol. Interface Port 23
4.8 relay Connector for Switch Contacts 23
5 Operating Elements and Modes 24
5.1 Operating Elements 24
5.2 Operating Modes (Overview) 27
5.2.1 «Measurement» Mode 28
5.2.2 «Setpoint» Mode 30
5.2.3 «General Parameter» Mode 31
5.2.4 «Sensor Parameter» Mode 32
5.2.5 «Sensor Control» Mode 33
5.2.6 «Test» Mode 34
6 Display Formats and Pressure Units 35
6.1 Display Formats 35
6.2 Pressure Units 36
6.3 Cursor 36
7 Operation 37
7.1 Personnel 37
7.2 Switching the Unit On and Off 37
7.3 Selecting the Operating Mode 39
7.4 «Measurement» Mode 40
7.4.1 Selecting the Measurement Point (Sensor) 40
7.4.2 Switching the Gauge On/Off (Sen-on/off) 41
7.4.3 Display of a Single Gauge / All Gauges
(Single/All) 41
7.5 «Setpoint» Mode 42
7.5.1 Selecting the Switching Function (Relay) 42
7.5.2 Assigning Measurement Points
(Control Sensor) 43
7.5.3 Defining the Threshold Values (Setpoint) 44
7.5.4 Underrange Control (UR-Control) 46

4Contents BG 805 186 BE / B (2005-07) MaxiGauge.om
7.6 «General Parameter» Mode 48
7.6.1 Parameter Input Lock (Key-lock) 48
7.6.2 Selecting the Pressure Unit (Unit) 49
7.6.3 Display Resolution (Digits) 50
7.6.4 Bargraph (Bargraph) 51
7.6.5 Restoring Default Values (Default) 52
7.6.6 Defining an Interface (Interface) 53
7.6.7 Defining the Baud Rate (Baudrate) 54
7.6.8 Defining the Node Address (Address) 55
7.6.9 Screensave (Screensave) 56
7.6.10 Display Contrast (Contrast) 57
7.7 «Sensor Parameter» Mode 58
7.7.1 Selecting a Measurement Point (Sensor) 58
7.7.2 Gauge Identification (Type) 59
7.7.3 Offset Function (Offset) (zeroing) 60
7.7.4 Activating the Degas Routine (Degas) 63
7.7.5 Setting the Calibration Factor (Cal-Factor) 64
7.7.6 Setting the Measurement Value Filter (Filter) 65
7.7.7 Defining the Measurement Point Name
(Name) 67
7.8 «Sensor Control» Mode 68
7.8.1 Selecting the Controlled Gauge (Sensor) 70
7.8.2 Selecting the Controlling Source (Control) 70
7.8.3 Setting the «Sensor 1 ... 6» Control 71
7.8.4 Setting the «Extern» Control 71
7.8.5 Setting the «Manual» Control 72
7.8.6 Setting the «Hotstart» Control 73
7.9 Status Messages 74
7.10 Error Messages 76
8 Communication 79
8.1 Serial Interfaces 79
8.1.1 Connection Diagrams 79
8.1.2 Connection Cable 80
8.1.3 Data Transmission 81
8.2 Mnemonics 85
8.2.1 Measurement Values 86
8.2.2 Display 89
8.2.3 Switching Functions 90
8.2.4 Parameters 91
8.2.5 Interfaces 94
8.2.6 Error Messages 97
8.2.7 Test Programs for Pfeiffer Vacuum
Service Specialists 98

BG 805 186 BE / B (2005-07) MaxiGauge.om Contents 5
9 Maintenance and Care 102
9.1 Personnel 102
9.2 Cleaning 102
9.3 Maintenance 103
10 Accessories and Spare Parts 104
11 Decommissioning 106
Appendix 107
A: Validity Table 107
B: Conversion of Pressure Units 108
C: Equipment Test 108
D: Literature 112
Declaration of Conformity 115
For cross references to pages within this manual, the
symbol (→XY) is used, for references to other docu-
ments, the symbol (→[Z]).

6BG 805 186 BE / B (2005-07) MaxiGauge™
1 Intended Use
The MaxiGauge™ 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
• PCR Combined Pirani/Capacitance gauge
• IKR Cold cathode gauge
• PKR Combined Pirani/cold cathode gauge
• IMR Hot ionization gauge High Pressure
(HP)
• PBR Combined Pirani/Bayard-Alpert hot
cathode ionization gauge (BA)
• CMR/ACR Capacitive gauge
• APR Piezoresistive gauge
The unit is suited for total pressure measurement in the
range of 10-11 mbar to 50 bar (5×104mbar). Through its
pressure dependent switching functions and the user-
programmable sensor control it can also perform a num-
ber of functions for controlling and monitoring vacuum
equipment and processes.
DANGER
Although this unit conforms to high quality and safety
standards and has been built and tested in accordance
with current technology, bodily injury and property
damage cannot be precluded if it is used in non-con-
forming applications (for purposes other than intended)
or if it is not used with diligence.
Therefore, it is essential that you carefully study this
operating manual, especially the chapter "Safety".
Keep this operating manual in a convenient location
near your equipment.
HINWEIS
*)Comprehensive list of gauge types →10.

BG 805 186 BE / B (2005-07) MaxiGauge.om Technical data 7
A Width of front panel 241 mm (½ 19" rack width)
B Mounting horizontal 224 mm
C Mounting vertical 76.2 mm
D Height of front panel 88 mm (2 height units)
E Installed depth 228.5 mm
F Installed width 207 mm
G Installed height 88 mm (2 height units)
Typ:
No:
F-No:
VHzVA
Pfeiffer Vacuum, D-35614 Asslar
The nameplate is located on the rear panel.
Make sure that the voltage and frequency ratings con-
form with the local power supply system. The remaining
information is important for communication with the
Pfeiffer Vacuum customer service.
Figure 1:
Dimensions
Figure 2:
Nameplate

8Technical data BG 805 186 BE / B (2005-07) MaxiGauge.om
2 Technical Data
Dimensions →Figure 1
Weight 2.1 kg
19" rack installation →Accessories, 104
Voltage 90 ... 250 VAC / 50 ... 60 Hz
Power consumption 60 VA
Overvoltage category II
Protection class 1
Unit connector IEC 320 C14
Power switch Rear panel
Temperatures
Storage
Operation -20 ... +60 °C + 5 ... +40 °C
Relative humidity Max. 80 % up to +31°C,
decreasing to 50 % at +40 °C
Use Indoors only
maximum height 2000 m
Contamination severity II
Protection class IP 30
Safety
→115
EMC
Mechanical data
Power connection
Environment, standards

BG 805 186 BE / B (2005-07) MaxiGauge.om Technical data 9
Logarithmic gauges
TPR
Compact Pirani Gauge
(Pirani gauge)
PCR
Compact Pirani Capacitance
Gauge
(Pirani/Capacitance gauge)
IKR
Compact Cold Cathode Gauge
(Cold cathode gauge)
PKR
Compact FullRange™ CC Gauge
(Pirani/Cold cathode gauge)
IMR
Compact Process Ion Gauge
(Pirani/High pressure gauge)
PBR
Compact FullRange™ BA Gauge
(Pirani/Bayard-Alpert gauge)
Figure 3:
Gauges

10 Technical data BG 805 186 BE / B (2005-07) MaxiGauge.om
Linear gauges
CMR/ACR
Compact Capacitance Gauge
(Capacitive gauge)
APR
Compact Piezo Gauge
(Piezoresistive gauge)
Number 6
Compatible gauges
(→[1] ... [15])
Compact Pirani Gauges
Compact Pirani Capacitance
Gauge
Compact Cold Cathode Gauges
Compact FullRange™ CC Gau-
ges
Compact Process Ion Gauges
Compact FullRange™ BA Gau-
ges
Compact Capacitance Gauges
Compact Piezo Gauges
Pfeiffer Vacuum Compact
Gauges
TPR 250, TPR 260, TPR 261,
TPR 265, TPR 280, TPR 281
PCR 260
IKR 250, IKR 251, IKR 260,
IKR 261, IKR 270
PKR 250, PKR 251, PKR 260,
PKR 261
IMR 260, IMR 265
PBR 260
CMR 261, CMR 262, CMR 263,
CMR 264, CMR 271, CMR 272,
CMR 273, CMR 274, CMR 275;
ACR 261, ACR 262, ACR 263,
ACR 274
APR 250, APR 260, APR 262,
APR 265, APR 266, APR 267
Connector type, pin assignments →20
NOTE
With the exception of the IMR 265, PBR 260 and CMR 27X, which
can only be connected to ports 4 to 6, any compatible gauge type
can be connected to any analog output.
Gauge connections

BG 805 186 BE / B (2005-07) MaxiGauge.om Technical data 11
Measurement ranges →Gauge
Measurement error
Gain error
Offset error ≤0.2 % measurement signal
≤20 mV
Measurement rate 100 / s
Display rate 4 / s
Filter time constant
slow
standard
fast
2.1 s (fg= 0.075 Hz)
320 ms (fg= 0.5 Hz)
100 ms (fg= 1.6 Hz)
Voltage +24 VDC ±5%
Current
Sensor 1 to 3
Sensor 4 to 6 200 mA per gauge 600 mA per gauge
Fuse
Sensor 1 to 3
Sensor 4 to 6 300 mA per gauge 1 A per gauge
(PTC element, self resetting after
unit is switched off)
Turning the gauge on / off
Manual
Automatic
Hot Start
External
Self-monitoring
Softkey (Sen-on /Sen-off)
by gauge 1 ... 6 (Sensor X)
(IKR, IMR by TPR, PKR, etc.)
adjustable setpoints, user-
assignable
IKR, PKR, IMR and PBR gauges
are turned on when the unit is
switched on
Individually for each gauge at the
«Control» connector
TTL high: +2 … 5 V = gauge off
TTL low: ≤+0.8 V = gauge on
Internal pull-up 3.3 kΩto +5 V
IKR and IMR gauge turned off by
own measured value
Degas (PBR 260 only) Duration 3 min. (can be aborted)
Measured values
Gauge supply
Gauge control
Degas

12 Technical data BG 805 186 BE / B (2005-07) MaxiGauge.om
7
8
4
3
5
291
6
MaxiGauge™ part number PT G28 760:
1RS 232/422 Pinout for serial interface RS232C or
RS422 (not isolated)
2relay Connector for relay switch contacts
3 Power inlet 3-pin
4Reference for fuses inside the unit
(replacement only by Pfeiffer Vacuum
Service)
5 Power switch
6sensor 1 ...
... sensor 6 Connectors for gauges
7control Connector for control functions
MaxiGauge™ part number PT G28 761, additional fea-
tures:
8,9 RS 485/422 isol. Port for serial interface RS485
(addressable, isolated) and RS422
(isolated)
Connector types and pin assignments →20 f.
Figure 4:
Rear panel

BG 805 186 BE / B (2005-07) MaxiGauge.om Technical data 13
Number 6
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
Umax = 60 VDC / Imax = 3 A
Umax = 30 VAC / Imax = 3 A
Contact closed
Contact open Vacuum better than setpoint Vacuum worse than setpoint or
power switched off
Cycle life
mechanical
electrical 5×107cycles
1×105cycles
Connector type, pin assignment →22
Response time 10 ms
Relay contact Changeover switch, floating
Umax = 60 VDC / Imax = 3 A
Umax = 30 VAC / Imax = 3 A
Contact closed
Contact open No error Error or mains power switched
off
Cycle life
mechanical
electrical 5×107cycles
1×105cycles
Connector type, pin assignment →22
Number 6 (1 per gauge)
Voltage range 0 ... +10 V
Internal resistance 660 Ω
Relationship measurement sig-
nal-pressure →Gauge used
Connector type, pin assignment →20
Standard
Option (for PT G28 760)
RS232C
RS422, not isolated
RS485, addressable, isolated
RS422, isolated
Protocol
RS232C
RS422, RS485
ACK/NAK, ASCII
with 3 character mnemonics,
bi-directional data flow (master-
slave)
(additional information →79)
Only TXD and RXD used
Only TX+, TX-, RX+, RX- used
Connector type, pin assignment →22
Switching functions
Error signal
Analog outputs
Computer interfaces

14 Safety BG 805 186 BE / B (2005-07) MaxiGauge™
DANGER
Information on preventing any kind of bodily injury or
extensive property damage.
CAUTION
Special information on damage prevention.
NOTE
Special information on cost-effective use.
Specialists
This work may only be carried out by persons with
suitable technical training and the necessary experi-
ence.
Figure 5:
Symbols for residual hazards
Figure 6:
Symbol for special personal
qualifications

BG 805 186 BE / B (2005-07) MaxiGauge.om Safety 15
3 Safety
Specialists
Work on and with the MaxiGauge™ TPG 256 A may
only be carried out by persons with suitable technical
training and the necessary experience.
The opposite symbols together with explanatory text are
used to point out residual dangers inherent in conform-
ing utilization and to emphasize important technical re-
quirements.
• Take into account the relevant safety regulations
when doing installing and maintenance work.
Pfeiffer Vacuum declines any liability, and the warranty
becomes null and void if the operator or third parties
• utilize the product not according to the defined use
• disregard the technical data
• make any kind of changes (modifications, alterations,
etc.) to the product
• use the product with accessories not listed in the
product documentation.
3.1 Personnel
3.2 Danger, Caution,
and Note Symbols
3.3 Safety Information
3.4 Responsibility and
Warranty

16 Commissioning BG 805 186 BE / B (2005-07) MaxiGauge.om
Make sure to provide for proper ventilation when using
the MaxiGauge™ as desktop unit. For this purpose, an
acrylic glass stand can be ordered as accessory
(→Accessories 104).
Use a con-
nection cable
with ground
conductor.
CAUTION
If you can assume, for example for one of the following
reasons, that the unit is no longer safe to operate, shut
it down and secure it so that it cannot be inadvertently
turned on again:
a) the unit has sustained visible damage
b) it no longer functions
c) it has been stored for a longer period under unfa-
vorable conditions
d) it has been subjected to severe transport stress
DANGER
Any interruption of the protective ground inside or out-
side the unit, or disconnection of the protective ground
makes the equipment hazardous to operate (electric
shock).
Figure 7:
Setup as desktop unit
Figure 8:
Connection cable

BG 805 186 BE / B (2005-07) MaxiGauge.om Commissioning 17
4 Commissioning
Specialists
The unit may be put into service by skilled and suitably
trained persons only.
There are two possibilities for incorporating the unit into
a switching cabinet according to DIN 41 494:
a) Installation in a 19" rack frame (2 height units) to-
gether with a second unit or with a blanking plate
(→Accessories 104)
b) Installation in a 19" rack frame using an adapter
(3 height units, 63 length units, ¾ rack width)
(→Accessories 104)
Maxi Gauge
Maxi Gauge
Maxi Gauge
Maxi Gauge

rack
a) Direct installation
in a 19" frame
b) Installation with
an adapter
Connection piece
PT 441 480-T
Adapter
PT 441 248-X
Blank panel
PT 441 481
2 height units
3 height units
rack
With an acrylic glass stand (→Accessories 105), it
can also be used as bench top unit.
CAUTION
Consider the specifications in the "Technical data" with
regard to the admissible ambient temperature, the
protection class and the voltages.
4.1 Personnel
4.2 Set-Up, Assembly

18 Commissioning BG 805 186 BE / B (2005-07) MaxiGauge.om
Before switching the unit on make sure that the operat-
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. The power connector may only be plugged into
a socket with a protective ground. This protection must
not be defeated by an extension cable without ground
conductor.
If the unit is to be installed in a rack, the power must be
supplied via a switched power distributor.
4.3 Power Connection

BG 805 186 BE / B (2005-07) MaxiGauge.om Commissioning 19
Notes:

20 Commissioning BG 805 186 BE / B (2005-07) MaxiGauge.om
Pin assignment
1 Identification
2 GND
3 Measurement signal +
4 Measurement signal -
5 Screen
6 Vcc
Amphenol C91B,
6-pin, female
4
5
1
2
3
6
Front view
Pin assignment
1 Analog output sensor 1
2 Analog output sensor 2
3 Analog output sensor 3
4 Analog output sensor 4
5 Analog output sensor 5
6 Analog output sensor 6
7 GND
8 GND
9 GND
10 External control sensor 1
11 External control sensor 2
12 External control sensor 3
13 External control sensor 4
14 External control sensor 5
15 External control sensor 6
D-Sub, high density,
15-pin, female
15 11
10 6
51
Front view
Figure 9:
Gauge connector sensor
Figure 10:
Control connector control