BENSHAW RSi-030-SG-4B, Service Manual

Page: 100 / 116

Pub # 890046-10-00
Dec. 2015
Section 4, Page
18
of
32
SG Analog Input Calibration Procedure
This procedure defines how to calibrate the analog input signals of the SG VFD.
Required equipment: A calibrated current/voltage source (4–20 mA, 0–10 VDC and/or 0 to +/-12
VDC).
Using a calibrated source, input the analog signal (max then min) to the appropriate drive
terminals. The drive is told, via a parameter to read the signal. Access to a hidden group of
parameters, designated MAK, is required. This group contains the factory calibration parameters.
1. Accessing the MAK group
A. Push the Mode button twice to get to the AFN Group.
B. Use the down arrow button to get to parameter AFN-94, Parameter Lock.
C. Push the Program button.
D. Using the Shift and Up/Down arrow buttons, enter code _291 in Parameter AFN-94.
There are four digits, do not enter 2910.
E. Push Enter button.
F. Push the Mode button four (4) times to get to the MAK group (parameter MAK-00).
2. Calibration Procedure
A. For 4 – 20 mA Input
1) Input a 20 mA signal at terminals I and CM (or 5G on < to 40 HP).
2) Using the UP arrow button, go to parameter MAK-30 (I max cal).
3) Program to YES, push enter.
4) Input a 4 mA signal.
5) Go to parameter MAK-31 (I min cal).
6) Program to YES, push enter.
B. For 0 – 10 VDC
1) Input a 10 VDC signal at terminals V1 and CM (or 5G on < to 40 HP).
2) Using the arrow buttons, go to parameter MAK-28 (V1 max cal).
3) Program to YES, push enter.
4) Input a 0 VDC signal.
5) Go to parameter MAK-29 (V1 min cal).
6) Program to YES, push enter