Differential Fault Record Reporting; Table 5-33. Differential 2 Winding Fault Record Register Definition; Figure 5-39. 2 Winding Differential Fault Buffer; Figure 5-40. 3 Winding Differential Fault Buffer - ABB TPU2000 Technical Manual

Differential Fault Record Reporting

There are two Differential Fault Record Buffers contained within the TPU2000R Modbus Register mapping. They
are 2 Winding Differential Fault Buffer information for the TPU2000 and TPU2000R and a 3 Winding Differential
Fault Buffer which is only available for the TPU2000R 3 Winding Unit.
Table 5-33 lists the register map for the 2 Winding buffer and Table 5-34 lists that for the 3 Winding unit.
Differential Fault Record Layout (TPU2000/TPU 2000R)

Table 5-33. Differential 2 Winding Fault Record Register Definition

Register
Address
41665 Differential 2 Winding Fault Control
Register
1 = First Record
2 = Next Record
3 = Oldest Unreported Record
TPU2000/2000R Modbus/Modbus Plus Automation Guide
Fault or Operation Record Retrieval
Host Writes Data Control code : First Record, Next Record, or Oldest Unreported Record
Step 1.
Step 2.
Relay responds with Fault or Operation block.
If No Event in IED , Then respond with all registers = 0
If No NEW Event, Then respond with old event record.

Figure 5-39. 2 Winding Differential Fault Buffer

E C

Figure 5-40. 3 Winding Differential Fault Buffer

Item
E C
E C
Data Control Register
Differential
Fault Data
DPU 2000 and
DPU 2000R
Fault Stack
Data Control Register
Differential Fault
Data DPU 2000R
Only
Fault Stack
Description (Multiplier if any)
Fault Record Control Register
Unsigned 16 Bit
1 = Fill 41666 through 41745 with First Record in Data
Buffer.
2 = Fill 41666 through 41745 with next Record Data
pointed to in buffer.
3 = Fill 41666 through 41745 with the last (oldest
E C
E C
Differential Fault
41665
41666
32 Faults in Stack Max..
41745
Differential Third
43305
Winding Fault
42306
32 Faults in Stack Max.
42352
117