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

Figure 7-1: AI calibration equipment connection
CALIBRATOR
+
-
Attach the calibrator
clamps to the device's
disconnected wires.
7.1.2

Analog input calibration (voltage mode)

To calibrate the analog input:
IMPORTANT NOTE: This procedure describes a three (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 calibration order: Low Cal Point, 100% Cal
Point, 75% Cal Point, 50% Cal Point, and 25% Cal Point.
For illustrative purposes, the AI 1 is calibrated for an external device with a measurement range of
0 to 1500 PSI and an output signal range of 1 to 5 Vdc. Set the calibrator to voltage values within
this signal range to simulate the external device. Apply voltage values of 1 Vdc, 3 Vdc, and 5 Vdc
for the 3-point calibration as shown in
1. Connect the PC or laptop with PCCU32 to the controller.
2. Launch PCCU32 and click the Entry icon on the toolbar.
3. Verify that the signal to the analog input is voltage:
a. Click I/O System on the navigation tree. The Analog Inputs tab displays
b. Verify that the Signal field is set to 0-30 Volt for the AI calibration (see AI 1 in
1 2 8 | R MC-1 00 | 2 10 5 55 2MN A E
Disconnect the
external device.
External device
Table
1
+
-
1 2 3 1
7-2.
AI
2 3 4
2 3 1 2 3 1 2
(Figure 7-2).
Figure 7-2).
3