ABB Relion 650 Series Technical Manual page 282

Section 9
Logic
276
residual overcurrent protection. The SMPPTRC function has two inputs for these
functions, one for impedance tripping (1PTRZ used for carrier-aided tripping
commands from the scheme communication logic), and one for earth fault tripping
(1PTREF used for tripping from a residual overcurrent protection). External phase
selection for these two trip signals shall be provided via inputs PSL1, PSL2 and
PSL3.
A timer tWaitForPHS, secures a three-phase trip command for these two trip
signals in the absence of the external phase selection signals.
The SMPPTRC function has three trip outputs TRL1, TRL2, TRL3 (besides the
three-phase trip output TRIP), one per phase, to connect to one or more of the
IEDs' binary outputs, as well as to other functions within the IED requiring these
signals. These three output signals shall be used as trip signals for individual circuit
breaker poles. These signals are important for cooperation with the autorecloser
SMBRREC function.
The SMPPTRC function is equipped with logic which secures correct operation for
evolving faults as well as for reclosing on to persistent faults. A binary input
P3PTR is provided which will force all tripping to be three-phase. This input is
required in order to cooperate with the SMBRREC function.
In multi-breaker arrangements, one SMPPTRC function block is used for each
circuit breaker.
The lockout function
A tripped circuit breaker can be locked out and prevented from closing by the
output close lockout (CLLKOUT). The reset lockout (RSTLKOUT) is the input for
deactivating and resetting the output close lockout CLLKOUT.
CLLKOUT can be set by an external trip signal from another protection function
via the input SETLKOUT or internally via a three-phase trip with the setting
AutoLock = On. If CLLKOUT is set by an external trip signal from another
protection function and setting TripLockout = On, all trip outputs are set true.
The BLKLKOUT input blocks the circuit breaker lockout output CLLKOUT.
Directional data
Merged directional data from application functions can be provided to the trip
function (SMPPTRC) via the start matrix function (SMAGAPC) connected to the
STDIR input.
The directional input signal STDIR is a coded integer signal which may contain up
to 14 individual Boolean signals; see Figure 128:
STDIRX =[ b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14 ]
b0= START (start)
b1= FW (forward)
Table continues on next page
1MRK 511 424-UEN B
Bay control REC650 2.2 IEC
Technical manual