ABB Remote I/O RIO600 - Page 141

GFC release
MFAPSDE_ST
MFAPSDE_Oper
Reset Delay
Timer
Operate
Delay Timer
Reset delay time Operate delay time
Start delay time
Start delay time
Io
Uo
GUID-C9DD9B74-E46F-4FFB-A7C7-F022F9648430 V1 EN
Figure 76: Operation of function
Timer
If the detected fault direction is opposite to the set directional mode and GFC release
is active, MFAPSDE_ReEF output is activated once Start delay time has elapsed.
Reset timer is activated at the falling edge of General Fault Criterion release, that is,
when zero-sequence voltage falls below Voltage start value. MFAPSDE_ReEF is
reset once the reset delay time elapses. MFAPSDE_ReEF is also available as a
GOOSE output. If the Power direction logic setting is set to “Enable”, the active
power flow direction must be opposite to the set directional mode to activate
MFAPSDE_ReEF.
1MRS757488 H Section 6
Commissioning
RIO600 133
Installation and Commissioning Manual