Installation manual

Series C Controller Configuration and Operation Manual
7-4  Athena Controls, Inc. 900M050U00
7.3 Choosing the Output Action for On/Off Control
When the output type is set to on/off, only one other output parameter must be
configured: output action.
When an output is used for on/off control, it can be either direct or reverse acting.
• When the on/off output action is configured for reverse action (heating
applications), the controller will apply 100% output if the process temperature is
below the setpoint and 0% if the PV is at the SV.
• When the on/off output action is configured for direct action (cooling
applications), the controller will apply 100% output if the process temperature is
above the setpoint and 0% if the PV is at the SV.
Parameter Name:
Output 1 Action (95) and Output 2 Action (A6)
Name as Displayed
:
O1.ACO1.AC and O2.ACO2.AC
Used By:
all controllers
When Displayed:
if output type is on/off or PID
Choices:
dirdir direct
rErE reverse
Default:
output 1: reverse
output 2: direct
Description:
Used to specify whether the output will be direct-acting or
reverse-acting.
If you are using an on/off output, you have finished configuration
of that output’s parameters. The remainder of this section does
not apply to on/off outputs.
If only one output has been configured, go back to 7.2 to specify
the type for the other output.
If both outputs have been configured, go to Section 8 – Control
Parameters.