MC3V-X/10-4
Doc. N°
MO-0355-ING
Microe
ner
- Copyright 20
11
FW
940.09.01.x
Date
06
.0
1
.20
11
Rev.
4
Pag.
14
of
32
3. Instantaneous Output and Blocking Input
3.1 - Instantaneous Output
The instantaneous element of each of the protection functions (F59, F27, F81) can be
programmed to control one of the Output Relays.
This relay picks-up as soon as the input quantity exceeds the set trip level of the Protection
Function and automatically resets when the input quantity drops below the function reset level
(
≈
95% of the trip level).
3.2 – Blocking Input
Tripping at time end of any time delayed protection function (tF59, tF27, fF81, tF81<, tF59Vo,) can
be blocked by activating the Digital Input D1 (BI = Enable).
4. Output Relays
Three user programmable Output Relays are normally available on main relay R1, R2, R3, by a Field
Bus output (CANBUS) that controls additional number of user programmable Output Relays 1.R1, 1.R2,
1.R3, 1.R4.
Each of them can be programmed to be controlled by any element (instantaneous or time delayed) of
any of the Relay Functions including Remote trip and Internal Relay Fault.
Moreover, the operation of each of the output relays can be programmed to be either Normally
Deenergized (energized on tripping of the controlling Functional Element) or Normally Energized
(Deenergized on tripping of the controlling Functional Element).