Analog Input Calibration (Current Mode) - ABB RMC-100 User Manual

7.1.3

Analog input calibration (current mode)

IMPORTANT NOTE: This procedure describes the calibration procedure for a 3-point calibration.
Available target values for this option display in the calibration window and become active in
calibration order: Low Cal Point, 100% Cal Point, and 50% Cal Point. Adapt these instructions for a
five (5) point calibration. With a 5-point calibration, five pressure points display in order: Low Cal
Point, 100% Cal Point, 75% Cal Point, 50% Cal Point, and 25% Cal Point.
As an example, the AI 2 is calibrated for an external device with a measurement range of 0 to 1500
PSI and an output signal range of 4 to 20 mA. Set the calibrator at current values within this signal
range to simulate the external device. Use voltage values of 4 mA, 12 mA, and 20 mA for the 3-
point calibration as shown in
To calibrate the analog input with 3 points:
1. Connect the calibrator to the AI, per section 7.1.1, Connect calibration equipment.
2. Connect the PC or laptop running PCCU32 to the controller.
3. Launch PCCU32 and click the Entry icon on the toolbar.
4. Change the signal type for the analog input:
a. Click I/O System on the navigation tree. The Analog Inputs tab displays
Click the Signal field for the AI that is calibrating and select 4-20mA from the drop-down
b.
list (see AI 2 in
mode.
Figure 7-17: Change default AI 2 signal mode
5. Click Send. AI 2 Signal updates to 4-20mA
Table 7-2.
Figure 7-17). The default signal value for all AIs is 0-30Volt, which is voltage
(Figure 7-18).
21 05 55 2MN A E | RM C-1 00 | 1 3 7
(Figure 7-17).