INFICON VGC403 Three-Channel Measurement and Control Unit - Manual (Page 29)

tinb07e1-e 2011-07 Vacuum Gauge Controller
29
iM221
Logarithmic representation of the IM221 controller (1
V/decade) U = 8 V is equivalent of p = 10
-2
mbar.
LoGC4
Logarithmic representation of 12 decades (0.83 V /
decade) matched to the following sensor combination:
• PCG on channel 1
• BPG402 on channel 2
U = 10 V is equivalent of p = 1000 mbar. The switching
point between the sensors is 10
-2
mbar.
PM411
Nonlinear characteristic curve of the output as with the
PM411 board.
5.3.6 Error signal relay (Err-r)
The Err-r parameter is used to specify what kind of error
will trigger the error signal relay.
Tab. 5-11 Err-r parameter values
5.4 Test parameters (PArA tESt)
This parameter group is intended for test and service pur-
poses. It is used to examine additional system data, to set
basic system parameters, and to check individual system
functions.
The parameter group tESt is not required for normal oper-
ation. For this reason it is not accessible normally.
5.4.1 Selection
When switching on
The parameter group tESt becomes available if you
switch on the Vacuum Gauge Controller as follows:
1 Press the PARA button and keep it pressed
2 Switch the mains switch on. See Fig. 3-4,  11,
Pos. H.
• The Vacuum Gauge Controller is switched on
• The parameter group tESt is selected
• The PARA indicator is illuminated
During normal operation
During normal operation it is also possible to activate the
parameter group tESt from the measurement mode:
1 Press the PARA button
• The parameter menu is selected
• The PARA indicator is illuminated
2 Keep the UP and DOWN buttons pressed for
approximately 5 seconds
• The firmware version is displayed
• The parameter group tESt is selected
NOTE:
When the parameter group tESt is selected, the Vac-
uum Gauge Controller will not automatically return to
the measurement mode. In order to return to the mea-
surement mode, press the PARA button repeatedly
until all test parameters have been run through.
5.4.2 Firmware version (Pnr)
Displays the firmware version number. The last character
represents the modification index.
Example: 302-534-D
5.4.3 Watchdog control (dt-C)
Behavior of the system monitoring system (watchdog
control) in the event of an error.
Sensor Pressure (in mbar)
All types p = U/10 * 10
n
Controller Pressure (in mbar)
IM221 p = 10^[U - 10]
Sensor Pressure (in mbar)
PCG+BPG402 p = 10^[U/(10/12) - 9]
Display Significance
ALL All errors
no SE Device errors
CH 1 Sensor 1 and device errors
CH 2 Sensor 2 and device errors
CH 3 Sensor 3 and device errors
Display Significance
Auto An error message from the watch-
dog control is acknowledged auto-
matically after 2 seconds