Parameter Details - Honeywell DCP 50 Product Manual

NOTES
1. Not operative if Proportional Band = 0.
2. Switching differential for ON/OFF control output.
3. Optional; only one legend will appear for each alarm.
4. Only applicable if a DC linear input is fitted.
5. Only applicable if Output 2 is fitted as a secondary control (COOL)
output.
6. Applicable only if the Communications Option is fitted.
7. When a program is running, respective to program setpoint.
4.1

PARAMETER DETAILS

Parameter
Input Filter Time Filter removes extraneous impulses from
Constant the process variable input
Process Variable Modifies actual process variable (PV)
Offset value:
Offset PV + actual PV
Output Power 1 Current Output 1 power level
Output Power 2 Current Output 2 power level
Proportional Portion of input span in which Output 1
Band 1 (PB1) power level is proportional to the
(offset) process variable value (see
Figure 4-1).
Proportional Portion of input span in which Output 2
Band 2 (PB2) power level is proportional to the
(offset) process variable value (see
Figure 4-1).
Reset (Integral Integral time constant
Time Constant)
Rate (Derivative Derivative time constant
Time Constant)
Overlap/ Portion of proportional band (PB1 +
Deadband PB2) in which both outputs are active
(overlap) or neither output is active
(deadband) - see Figure 4-1).
Manual Reset Bias applied to output power,
(Bias) expressed as a percentage of output
power.
4-3
Function
= PV value used
Adjustment Range
OFF, 0.5 to 100.0
seconds in 0.5 second
increments
±input span of
Controller
0 to 100%
0 to 100%
0.0 to 999.9% of input
span
0.0 to 999.9% of input
span
1sec. to 99min. 59
secs. and OFF
00 secs. to 99 mins. 59
secs.
−20% to +20% of
(Proportional Band 1 +
Proportional Band 2)
0% to 100% (Output 1
only);
−100% to +100%
(Output 1 & Output 2)
Default value
2.0 seconds
0
Read only
Read only
10.0%
10.0%
5 mins. 00
secs.
1 min. 15
secs.
0%
25%