Flowserve Modutronic 20 II Modulating Position Controlle - Manual (Page 18)

Limitorque Actuation Systems Modutronic 20 II FCD LMENIM4002-00 – 08/06
18
6
Calibration
Procedure
WARNING: Hazardous Voltage in Control Compartment. Exercise caution while calibrating the
Mod 20 II with the Actuator Control Compartment open and power ON.
The purpose of performing the calibration procedure is to achieve the maximum accuracy obtainable
for each particular actuator application while providing stable operation. The actuator gear ratio and
many other factors determine the optimum calibration settings.
Four DIP Switches mounted on the Mod 20 II, as well as the ZERO, SPAN, GAIN, ON TIME, and OFF
TIME potentiometers, are used to obtain the proper settings for your application. This procedure will
proceed from the most accurate settings to the least accurate settings until unit stability is achieved.
Figure 6.1 – Calibration Adjustments for the Modutronic 20 II
1. Turn all power to the actuator OFF.
2. Verify that the procedures for the Initial Checkout and Setup (Section 4) and Mod 20 II Presets
(Section 5) have been properly completed.
c
MODUTR
ONIC
20
MODEL II
CLOSE
OPEN
ZERO
SPAN
GAIN
POWER ON
INPUT ACTIVE
ON TI ME
OFF TIME
DIP Switch
61-825-0713-1
434-528-4400
Limitorque Actuation Systems
Lynchburg, V
A. USA
MODUTR
ONIC
20
MODEL II
CLOSE
OPEN
ZERO
SPAN
GAIN
POWER ON
INPUT ACTIVE
ON TI ME
OFF TIME
DIP Switch
61-825-0713-1
434-528-4400
Limitorque Actuation Systems
Lynchburg, V
A. USA