User manual

Controlinc Digital Futronic VIII User Manual

Model DF320A Version 1.0

(

2003-01-31

)

3. Setup and Calibration

Setup of the actuator includes setting of Open and Close limit switches and Torque switches. This

section is a supplement to Manual E796 for instructions specific to the Digital Futronic VIII.

3.1. Open and Close Limit Switches

Limit switches were set at the factory and the analog controls were calibrated according to these

settings. Limit switches may need to be adjusted after installation, refer to manual E796 for instruction

on setting mechanical geared limits. After adjusting limits it is necessary to stroke the valve from one

limit to the other with power applied. When the limits trip the DCM320A will auto-calibrate the position

feedback zero and span values.

3.2. Auxiliary Inputs and Outputs

The DCM320A has two isolated 24VDC user discrete inputs and two dry contact relay outputs as well

as two analog inputs and one optional analog output. There are a variety of functions these can be

used for. Refer to the Controlinc Quick Startup guide for information about their use.

3.3. Torque Switches

WARNING: Torque switches protect the valve and actuator. Do not set higher

than maximum specified by valve manufacturer.

Refer to the "TORQUE SWITCH TSC AND TSO SETTING" section of Manual E796 prior to

proceeding. The open (TSO) and close (TSC) torque switches were set at the factory for at least one

setting above the nominal specified torque. If additional torque is required to operate the actuator, move

the dial setting up not more than one digit at a time not to exceed the maximum specified torque for the

application. Dials may be set in half digit steps from 1 to 10. Refer to the torque table of the actuator

specification sheet for torque values corresponding to the dial settings.