Signals - ABB RELION REX640 Technical Manual

Section 4
Protection functions
4.5.7.8
814
GUID-2467CA86-8E62-4611-8D79-1AA1B482323D V1 EN
Figure 442: Operating curve of "OvExt IDMT Crv4" based on the specified
settings. The two dots marked on the curve are referred to in the text.
If the excitation level stays at 1.25, the operation occurs after 15.20 s. At the excitation
level of 1.42, the time to operation would be 5.90 s as per the two dots in
In this case, the setting Maximum operate time 3600 s does not limit the maximum
operate time because the operate time at Start value = 110% (1.1 pu) is approximately
75 s.

Signals

Table 768: OEPVPH Input signals
Name Type
I3P SIGNAL
U3P SIGNAL
BLOCK BOOLEAN
Table 769: OEPVPH Output signals
Name Type
OPERATE BOOLEAN
START BOOLEAN
BLK_RESTART BOOLEAN
COOL_ACTIVE BOOLEAN
Default Description
- Three-phase currents
- Three-phase voltages
0=False Block signal
Description
Operated
Started
Signal for blocking reconnection of an overheated
machine
Signal to indicate machine is in cooling process
1MRS759142 C
Figure 442.
REX640
Technical Manual