Chapter 5—System Configuration and Operation
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
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109
Table 22. Stand Alone Ground Fault Module Configuration Parameters
Note
1
Requires soft reset.
Fieldbus Control Word
The Stand Alone Ground Fault Module profile will accept the
following control commands over a fieldbus network.
Control Bits
Bit 3
0 = No action
1= Reset fault (will clear fault provided condition
has cleared)
Bit 5
0 = No action
1 = The C445 will issue a “Test Trip” fault
causing the ground current trip relay
(Output 3 default) to close.
Control Status Word
The control status word of the Stand Alone Ground Fault
Module profile can be accessed over the fieldbus network.
Status Bits
Bit 2
0 = Local control source active
1 = Remote control source active
Bit 3
0 = No fault present
1= C445 fault present
Bit 4
0 = No warning present
1= C445 warning present
Bit 5
0 = No inhibit present
1= C445 control inhibit present
Bit 6
0 = C445 not ready (fault and/or inhibit present)
1= C445 ready for control (No fault or inhibit present)
Configuration Parameter
Modbus Register Description
Read/Write
Active Operation Mode
1
700
This parameter selects the Operation Mode.
R/W
Trip Enable Bit Field
1000–1001
Trip (Fault) protection enable bits Set bit #3 to enable protection.
R/W
Warn Enable Bit Field
1002–1003
Warning protection enable bits Set bit #3 to enable protection warning.
R/W
GF Trip Level Scaled
1060
Ground Fault Trip Level, if exceeded, will generate a trip of the motor following
the Ground Fault Trip Delay time.
R/W
GF Alarm Level Scaled
1061
Ground Fault Alarm Level, if exceeded, will generate a warning following the
Alarm Delay Time.
R/W
GF Protection Start Delay
1062
Delay when motor is first started to inhibit raising a ground fault trip condition
until this time expires.
R/W
GF Trip Debounce
1063
Ground current must exceed threshold for debounce time before a trip occurs.
R/W
GF Protection Inhibit Current
1064
Ground Fault Protection Inhibit Current, if selected the GF Inhibit will be used.
R/W
GF Trip Delay
1093
Delay Trip, once trip is detected, the delay timer starts and when expired will
fault the C445.
R/W
C445 Local Source Selector
1
711
Set to “1 no local control
R/W
C445 Remote Source Selector
1
712
Set to “1” Fieldbus is remote control
R/W
C445 Q1 Output function select
1
715
Output 1 user function selection
R/W
C445 Q2 Output function select
1
716
Output 2 user function selection
R/W
C445 Q3 Output function select
1
717
Output 3 user function selection
R/W
