Watlow 8LS Controller - Manual (Page 72)

64 8LS User’s Guide
Setup
Output Action
Use this menu to select the control action for the current output loop.
The default is Reverse for heat outputs and Direct for cool outputs.
Selectable values: Reverse or Direct.
Output Limit
The output from each loop's dual heat/cool output may be limited to a
value less than 100%. This level may not be exceeded by the PID
control action. This limit on the control output may be limited by a
period of time and then returned to full 100% output or it may be a
continuous limit until changed by the programming keys. The limit time
delay is restarted whenever you:
• Enter a new time period
• Switch a loop’s mode from Manual to Auto
• Power up the controller
The time period is adjustable from 1 to 999 seconds for a maximum
period of time of over 16 minutes. A time of 0 seconds will be displayed
as C, the same as for Continuous.
The output limiting is disabled by setting the value to 100%. The control
mode of ON/OFF has no output limiting available.
You may use the output limiting for "Soft Start" type of requirements of
different processes, or to restrict the energy into a process, tailoring the
controller output to the process needs.
Use this menu to limit the maximum PID control output for a loop’s heat
and cool outputs. This may be a constant limit or a temporary one
subject to the output limit delay.
Selectable range: 0-100%.
1 2 3 4 5 6 7 8
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUTPUT%
1 OUTPUTS
ACT ?REV H
T
1 2 3 4 5 6 7 8
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUTPUT%
1 OUTPUTS
LIM ? 100 H
T