Loop control – West Control Solutions N6600 User Manual
Page 106

DC
Resolution:
Eight bits in 250mS (10 bits in 1 second
typical, >10 bits in >1 second typical).
Accuracy:
±
0.25% (mA at 250
Ω
, V at 2 k
Ω
). Degrades
linearly to
±
0.5% for increasing load
burden (to limit as stated below).
Update Rate:
Every control algorithm execution.
Ranges:
0 - 20mA
4 - 20mA
0 - 5V
0 - 10V
(Changes between V and mA require link jumper movement.)
Load Impedance:
0 - 20mA: 500
Ω
maximum
4 - 20mA: 500
Ω
maximum
0 - 5V: 500
Ω
minimum
0 - 10V: 500
Ω
minimum
Isolation:
Isolated from all other inputs and outputs.
Range Selection Method:
Link jumper.
A.7
LOOP CONTROL
Automatic Tuning Types:
Pre-Tune and Self-Tune.
Proportional Bands:
0 (OFF), 0.5% - 999.9% of input span at
0.1% increments.
Reset (Integral Time
Constant):
1s - 99min 59s and OFF
Rate (Derivative Time
Constant):
0 (OFF) - 99 min 59 s.
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.
A-7
S075-A
PM-0075