Rockwell Automation T3480 ICS Regent Guarded Analog Output Modules - Manual (Page 18)

Guarded Analog Output Modules (T3480)
1 8
Industrial Control Services
· Potentiometer adjustment tool.
· Phillips screwdriver
· I/O module extender, catalog number T3322.
·
PC running the W INTERPRET software, used to force the
analog output channels to the specific values for
calibration.
Calibration Preparation
The module must be calibrated while connected to an I/O
chassis of an operational Regent system.
During calibration, the Guarded analog output module will be
disconnected from the actual controlled field devices.
Appropriate precautions should be taken to ensure that the
disconnection of the control signals does not pose a safety risk
to plant personnel or process equipment.
There are Offset and Gain potentiometers for each analog
output channel. In addition there are three reference voltage
potentiometers and four test points to measure the reference
voltages. These potentiometers are located on a circuit board
inside the module's protective clamshell housing (see Figure
12). During the calibration steps you will remove the printed
circuit board from the housing in order to access these
potentiometers for adjustment.
The potentiometers for each analog output channel are
identified in Table 2. The potentiometers labeled R19, R17
and R22 are used to adjust the reference voltages.
Table 2. Potentiometer Identification.
Channel
Offset
Potentiometer
Gain
Potentiometer
1 R101 R100
2 R201 R200
3 R301 R300
4 R401 R400
5 R501 R500
6 R601 R600
Important!