WEST P4100 - Control Specifications

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- DIN Controllers & Indicators - Product Manual
Page 134 Specifications 59305, Issue 5 – March 2005
Resolution: Eight bits in 250mS
(10 bits in 1 second typical, >10 bits in
>1 second typical).
Update Rate:
Every control algorithm execution.
Ranges:
0 to 10V
0 to 5V
2 to 10V
0 to 20mA
4 to 20mA
(default)
Load Impedance:
0 to 20mA & 4 to 20mA:
500Ω maximum.
0 to 5V, 0 to 10V & 2 to 10V:
500Ω minimum.
Short circuit protected.
Accuracy:
±0.25% (mA @ 250Ω, V @ 2kΩ).
Degrades linearly to ±0.5% for
increasing burden (to specification
limits).
When used as control output:
For 4 to 20mA and 2 to 10V a 2%
over/underdrive is applied (3.68 to
20.32mA and 1.84 to 10.16V).
Isolation:
Reinforced safety isolation from inputs
and other outputs.
Linear DC:
Use as 0 to 10VDC transmitter
power supply*
Adjustable, 0.0 to 10.0V (regulated)
output into 500Ω minimum.
Power Rating
20 to 28VDC (24V nominal) into 910Ω
minimum resistance.
Transmitter Power
Supply:
*see Linear output
spec for 0-10V PSU
Isolation:
Reinforced safety isolation from inputs
and other outputs.
Control Specifications
Automatic Tuning Types:
Pre-Tune, Self-Tune.
Proportional Bands:
0 (OFF), 0.5% to 999.9% of input span at 0.1% increments.
Automatic Reset
(Integral Time Constant):
1s to 99min 59s and OFF.
Rate
(Derivative Time Constant):
0 (OFF) to 99 min 59 s.
Manual Reset
(Bias):
Added each control algorithm execution. Adjustable in the
range 0 to 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 0.5s to 512 seconds in binary steps.
Setpoint Range:
Limited by Setpoint Upper Limit and Setpoint Lower Limit.
Setpoint Maximum:
Limited by Setpoint and Scale Range Upper Limit.
Setpoint Minimum:
Limited by Scale Range Lower Limit and Setpoint.
Setpoint Ramp:
Ramp rate selectable 1 to 9999 LSD’s per hour and infinite.
Number displayed is decimal-point-aligned with display.