Appendix D—Modbus Register Map
352
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
920
PT Ratio Primary
UINT16 RW NV
Default: 1
Run Lock
PT Ratio - Primary (Only used with external Potential Transformers)
921
PT Ratio Secondary
UINT16 RW NV
Default: 1
Run Lock
PT Ratio - Secondary (Only used with external Potential Transformers)
922
CT Ratio - Primary
External Ground Current CT
UINT16 RW NV
Default: 500
Range: 1 to 65535
Units: A
Config CRC
Run Lock
Admin Lock
USB Lock
Backup Mem
CT Ratio - Primary
CBCT ratio is adjusted by changing the CT Primary Current Input vs CT
Secondary Output Ratings
923
CT Ratio - Secondary
External Ground Current CT
UINT16 RW NV
Default: 1
Range: 1 to 65535
Units: A
Config CRC
Run Lock
Admin Lock
USB Lock
Backup Mem
CT Ratio - Secondary
CBCT ratio is adjusted by changing the CT Primary Current Input vs CT
Secondary Output Ratings
924
CT Secondary Multiplier
External Ground Current CT
UINT16 RW NV
Default: 1
Range: 1 to 65535
Config CRC
Run Lock
Admin Lock
USB Lock
Backup Mem
GFM CBCT CT Ratio Interposing Multiplier
Multiplier allows support for configurations where effective CT ratio is
very high. When using an interposing CT this register would contain the
interposing CT ratio.
1000
Trip Enable
BYTE RW NV
Array size: 4
Default: 0x38, 0x00, 0x04,
0x00
Bitfield
Config CRC
Run Lock
Admin Lock
USB Lock
Backup Mem
Enable protections by selecting the box next to each protection to place a
check mark in it. Each protection selected will enable those protections
that the C445 will trip on.
Table 128. C445 Modbus Register Map, continued
Register
Name
Attribute
Description
Bit
Description
Coil
0
Under voltage
15985
1
Over voltage
15986
2
Reserved
15987
3
Ground current fault
15988
4
Current phase loss
15989
5
Current unbalance
15990
6
Instantaneous over current
15991
7
Jam
15992
8
Power factor deviation
15993
9
Voltage phase loss
15994
10
Voltage unbalance
15995
11
Frequency deviation fast
15996
12
Frequency deviation slow
15997
13
Under current
15998
14
High power
15999
15
Low power
16000