Manual 37353A
MFR 13 Packages - Protection Relay
© Woodward
Page 77/91
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Number Content
(words) Unit
Remark
3964 Modbus
00 01
1
(02, 03)
Set point value active power P
Setpoint
kW
0 to 32000
02 03
2
(04, 05)
Set point value Power
factor (
ϕ
Setpoint
)
Power factor ×
100
-99 to 100
04 05
3
(06, 07)
Control word
Bit 15 = 1
Blocking of watchdog active
Bit 14 = 1
free
Bit 13 = 1
free
Bit 12 = 1
free
Bit 11 = 1
free
Bit 10 = 1
Release isolated operation
Bit 9
= 1
free
Bit 8
= 1
Packages GPX-I
/
GPY-I
/
GPY-I-N
/
K08
: Release power
circuit breaker
Bit 7
= 1
free
Bit 6
= 1
free
Bit 5
= 1
free
Bit 4
= 1
Acknowledge
Bit 3
= 1
Transmission watchdog bit 1
Bit 2
= 1
Transmission watchdog bits 0
Bit 1
= 1
free
Bit 0
= 1
free
06 07
4
(08, 09)
Set point frequency f
Setpoint
Hz × 100
3200 to 6800
08 09
5
(10, 11)
Set point voltage V
Setpoint
V
0 to 480
10 11
6
(12, 13)
free
1
The transmitted number has a sign (When connected correctly - = capacitive, + = inductive; 100 means power factor = 1)
2
This control bit is ignored, if the screen "Blocking via interface" is configured as "OFF".
3
Corresponds to the discrete input "Release isolated operation" (terminal 73/74).
4
Packages GPX-I
/
GPY-I
/
GPY-I-N
/
K08
: Corresponds to the discrete input "Release CB" (terminal 30/31).
5
Corresponds to the "Acknowledge" button.
6
Here, a "00" must always be sent. If these bits are not configured as "00", the alarm "Interface" is sent after 15 seconds (only if the screen
"Interface monitoring" is set to "ON").
7
Example: 4856 = 48.56 Hz
8
The voltage set point relates to the set secondary voltage.
For voltage transformers 10.0 kV/100 V a voltage set point value of 100 V must be set (corresponds to V
Setpoint
= 10.0 kV)
