Rms Load Current/Angular Values Block; Table 12. Mitigations Of Modbus Mappings For Rms Load Current/Angular Values Block; Figure 5. Snapshot On Scaling Load Current A From Cmt To Read Primary Current In Ampere - ABB Relion REF615R Manual

1MRS240173-IB B
5.1.3
DPU2000R
register DPU 2000R description
addr.
40257 Load Current A
40258 Load Current A Angle
40259 Load Current B
40260 Load Current B Angle
40261 Load Current C
40262 Load Current C Angle
40263 Load Current N
40264 Load Current N Angle
REF615R
DPU2000R Modbus Point List Mitigation Manual
REF615R provides another set of 6 system status registers (SSR1, SSR2,
SSR3, SSR4, SSR5, SSR6). REF615R also provides device information
registers. Please check "Feeder Protection and Control REF615R Modbus
Point List Manual", document ID1MRS240052-IB, and "REF615R
Modbus Communication Protocol Manual", document ID
1MRS240047-IB to find out more information.

RMS Load Current/Angular Values Block

REF615R has mapped the majority of load current/angular value registers the same as in
DPU2000R. The default scaling of the current and voltage readings are 100 as default, it
is because different from providing primary value in ampere or KV as DPU2000R Modbus
server did, REF615R Modbus server provides current and voltage readings as per unit.
To change the scaling of the default measurement readings in per unit to primary readings,
one can use PCM600 CMT tool to configure the scaling factors.
For example as shown in Figure 5, to read primary ampere of load current A at address
40257, one can change the signal's default scaling to 600 after finding out the CT's primary
ampere rating is 600A.
Figure 5: Snapshot on scaling load current A from CMT to read primary current in
ampere.
Another way is to remap the register for "Load Current-A" to a UDR as described in
Section 5.1.1.2.3 and Section 5.1.1.2.4.
Table 12: Mitigations of Modbus mappings for RMS load current/angular values block
REF615R
Scale register
addr.
1 40257
1 40258
1 40259
1 40260
1 40261
1 40262
1 40263
1 40264
Scale IEC 61850 path
100 LD0.CMMXU1.A.phsA.instCVal.mag.f
1 LD0.CMMXU1.A.phsA.instCVal.ang.f
100 LD0.CMMXU1.A.phsB.instCVal.mag.f
1 LD0.CMMXU1.A.phsB.instCVal.ang.f
100 LD0.CMMXU1.A.phsC.instCVal.mag.f
1 LD0.CMMXU1.A.phsC.instCVal.ang.f
100 LD0.RESCMMXU1.A.res.instCVal.mag.f
1 LD0.RESCMMXU1.A.res.instCVal.ang.f
Section 5
4x Registers
Comments on
REF615R Modbus
points mapping
reading per unit value
by default
reading per unit value
by default
reading per unit value
by default
reading per unit value
by default
33