Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
Page 134/190 © Woodward
Scaleable analog input 0/4 to 20 mA (analog input [T1] to [T4])
0/4 to 20 mA sensors may be measured here. A description and an engineering unit may be assigned to the input.
The analog input is displayed with its description. Two limit levels can be monitored. The first limit level initi-
ates a class F1 alarm, the second limit level initiates a class F3 alarm.
Parameter 239
Analog input x
scalable ON
[x = 3 to 4]
0/4 to 20 mA input; enable/disable ON/OFF
ON................The value of this input appears in the display, and monitoring is en-
abled. The subsequent parameters of this function are displayed.
OFF..............No display or monitoring is performed, and the subsequent parame-
ters of this function are not displayed.
Parameter 240
Name and unit
----------------
0/4 to 20 mA input; description User defined text
The description of the analog input may be programmed using this parameter. A
maximum of four zeros may be used as placeholders for the numerical measuring
values. Characters may divide the placeholders (i.e. a comma). The measured val-
ues subsequently appear wherever the zeros are placed.
Parameter 241
Analog input x
0-00mA
[x = 3 to 4]
0/4 to 20 mA input; measuring range 0 to 20 mA / 4 to 20mA
The measuring range 0 to 20 mA or 4 to 20 mA is selected via this parameter. If 4
to 20 mA is configured and a current of less than 2 mA is measured, the controller
assumes a wire break has occurred (see below).
Parameter 242
Value at
0% 0000
0/4 to 20 mA input; smallest input value -9,999 to 9,999
The user must assign a numeric value to the scaleable analog input that corresponds
to the smallest input value Æ Definition of the lower value (i.e. 0 %, 0 kW, 0 V) at
the minimum analog input value of 0 mA or 4 mA.
Parameter 243
Value at
100% 0000
0/4 to 20 mA input; largest input value -9,999 to 9,999
The user must assign a numeric value to the scaleable analog input that corresponds
to the largest input value Æ Definition of the upper value (i.e.100 %, 500 kW,
400 V) at the maximum analog input value of 20 mA.
Parameter 244
Limit warning
value -0000
0/4 to 20 mA input; limit value for class F1 alarm -9,999 to 9,999
If the measured value exceeds or falls below this configured threshold value (se-
lected by
Parameter 247) for at least the delay time (Parameter 246), the following
alarm class is initiated.
Issuing of class F1 alarm
Parameter 245
Limit shutdown
value -0000
0/4 to 20 mA input; limit value for class F3 alarm -9,999 to 9,999
If the measured value exceeds or falls below this configured threshold value (de-
pendent upon
Parameter 247) for at least the delay time (Parameter 246), the fol-
lowing alarm class is initiated.
Issuing of class F3 alarm
Parameter 246
Delay
limit 1/2 000s
0/4 to 20 mA input; delay time for limit values of class F1 and F3 alarm 0 to 999 s
In order to initiate an alarm, the measured value (Parameter 244 or Parameter 245)
must be over or under the configured threshold value (selected by
Parameter 247)
without interruption for at least this time.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English