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Maintenance Controller Calibration
Thermocouple Input |
| Current Input mA |
+ | 4 to 20 | + |
| * | |
T/C, mV, V | mA | |
- | Source | - |
| ||
Ground Terminal | Ground Terminal | |
* | A 250 ohm resistor is required for | |
| the input range. | |
mV, V Inputs | RTD Input (3 wires) | |
| ||
+ |
| + |
mV or V |
| |
Source |
| - |
- |
| |
|
| RTD |
Ground Terminal |
|
|
| Ground Terminal |
+12 - 11
RTD 10
1
+9 - 8
RTD 7
+6 - 5
RTD 4
+3 - 2
RTD 1
Channel 4
Channel 3
Channel 2
Channel 1
Figure 33 AI module terminal block
Other AI module calibration selections
Additional calibration selections allow you to perform other AI module calibration procedures:
•CALIBRATE CJ TEMP – for calibrating the two Cold Junction (CJ) references on the AI module
•COPY CALIBRATION – for copying calibration values from one AI module channel to another
•RESTORE AI FACTORY CAL – to restore AI module channels to their factory calibration
•RESTORE CJ FACTORY CAL – to restore CJ reference to their factory
AO module calibration values
Two calibration selections are accessible under the CALIBRATE AO menu selection
1.CALIBRATE AO CHANNEL – to calibrate the zero offset and span values of the AO module channels to
2.RESTORE AO FACTORY CAL – to restore factory calibrated to an AO module channel.
The AO module contains a wire jumper (labeled ST1) on the PWA. Cutting this jumper will prevent any changes to initial calibration values of the module and prevent any further field calibration. See Figure 34 for the location of the jumper. More details on module calibration are given in the UMC800 Operator Interface User Guide and the UMC800 User Utility User’s Guide.
68 | UMC800 Controller Installation and User Guide | Release F |
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