LOOP CONTROL

Automatic Tuning Types:

Pre-Tune

Proportional Bands:

0 (OFF), 0.5% - 999.9% of input span at

 

0.1% increments.

Reset (Integral Time

1s - 99min 59s and OFF

Constant):

 

Rate (Derivative Time

0 (OFF) - 99 min 59 s.

Constant):

 

Manual Reset (Bias):

Added each control algorithm execution.

 

Adjustable in the range 0 - 100% of output

 

power (single output) or –100% to +100%

 

of output power (dual output).

Deadband/Overlap:

–20% to +20% of Proportional Band 1 +

 

Proportional Band 2.

ON/OFF Differential:

0.1% to 10.0% of input span.

Auto/Manual Control:

User-selectable with “bumpless” transfer

 

into and out of Manual Control.

Cycle Times:

Selectable from 1 s to 512 secs in binary

 

2

 

steps.

Setpoint Range:

Limited by Range Maximum and Range

 

Minimum.

ALARM CONTROL

Maximum Number of

Two “soft” alarms.

Alarms:

 

Max. No. of Outputs

Up to two outputs can be utilised for alarm

Available:

purposes.

Combinatorial Alarms:

Logical OR or AND of alarms to an

 

individual hardware output is available.

S077-A

Volume II

A-8

Page 73
Image 73
Omega CN1166 manual Loop Control, Alarm Control