Watlow CPC400 - Manual (Page 128)

Chapter 5: Menu and Parameter Reference CPC400 Series User’s Guide
114 Watlow Anafaze Doc. 0600-2900-2000
Restore Automatic Mode
Choose a digital input. If the input is connected to control-
ler common, the loop returns to automatic control mode af-
ter a failed sensor is repaired (if it was in automatic mode
and the digital input was on when the sensor failure oc-
curred).
Values: enabled by D/I1 to enabled by D/I8 (1 to 8) or dis-
abled (0). Values in parentheses are for serial communica-
tions and LogicPro.
Default: disabled (0)
Modbus Address (Loops 1 to 9): 44460 to 44468
Parameter Number: 87
LogicPro Driver: Database
LogicPro Address (Loops 1 to 9): 87.1 to 87.9
Tune Band
Set the controller to automatically adjust the range around
set point over which the controller will continuously tune
the control parameters, or enter a fixed value. This param-
eter is provided for use only in the unlikely event that the
controller is unable to automatically tune and stabilize at
set point. This may occur with very fast processes. In that
case set the Tune Band to a large value such as 300. Other-
wise, leave this parameter set to auto.
Values: auto (0) and 1 (1) to 999 (999)
Default: auto (0)
Modbus Address (Loops 1 to 9): 46542 to 46550
Parameter Number: 144
LogicPro Driver: Database
LogicPro Address (Loops 1 to 9): 144.1 to 144.9
Tune Gain
Choose the target responsiveness of the control algorithm.
There are six settings ranging from 1, with the least ag-
gressive response and least potential overshoot (lowest
gain), to 6, with the most aggressive response and most po-
tential for overshoot (highest gain). The default setting, 3,
is recommended for loops with thermocouple feedback and
moderate response and overshoot potential.
Values: 1 (1) to 6 (6)
Default: 3 (3)
Modbus Address (Loops 1 to 9): 46559 to 46567
Parameter Number: 145
LogicPro Driver: Database
LogicPro Address (Loops 1 to 9): 145.1 to 145.9
l01 RestoreAutor
bdisabled
l01 Tune band r
bauto
l01 Tune gain r
b3