ControlMaster CM30, CM50 and CMF310
Universal process controllers,
1
/
4
,
1
/
2
DIN and fieldmount
7 Advanced Level
54
IM/CM/ED–EN Rev. X
…Control / …Loop 1 (2) Control
Loop 1 (2) Output
Used to set the output limits, tracking rates, slew rates and output action on power failure or
process variable failure.
Limits
When used with split output the limits restrict the
PID
algorithm output (see page 30) before
the split output range values are calculated.
Limit Action
Selects when the output limits should be applied (
Off
,
Auto
+
Manual
,
Auto
Only
).
Low Limit
Set minimum controller output in %.
High Limit
Set maximum controller output in %.
Failure Actions
Power Recovery
Used to select the default power failure mode required following a power interruption or
failure.
Last Mode
The last
Power Recovery
mode selected.
Man – Last
Manual
control mode using the last output before power failure.
Man – 0 %
Manual
control mode with output set to 0 %.
Man – 100 %
Manual
control mode with output set to 100 %.
Man – Default
Manual
control mode with output set to default value.
Auto Mode
Auto
control mode with integral term reset.
Auto – Last
Auto
control mode with integral term restored to its last value before the power failure.
Timed – Last
If the power outage is < recovery time, the control mode before power down is selected.
If the power outage is > recovery time,
Manual
control mode (
Man – Last
) is selected using
the last output before the power failure.
Timed – Default
If the power outage is < recovery time, the control mode before power down is selected.
If the power outage is > recovery time,
Manual
control mode (
Man – Last
) is selected using
the default output value.
Recovery Time
Set time in seconds for use with Timed power recovery.
PV Fail Action
Determines the controller output when the process variable input fails.
No Action
No action is taken if the process variable input fails.
Man – Hold O/P
Puts the controller into
Manual
control mode and holds the output at its value immediately
prior to the PV failure.
Man – Default O/P
Puts the controller into
Manual
control mode and sets the output to the default output value.
Default Output
This parameter is used in conjunction with
Power Recovery
(see page 54) and
PV Fail Action
settings (see above). For split output this value refers to the
PID
algorithm (see page 30)
before the split range values are calculated.