Section 4 1MDU07212-YN Rev. D
Protection and Control Function
38 REF601 / REJ601 / REM601
Application Manual
4.14.4 RI type characteristic
The RI-type characteristic is a special characteristic used mainly in combination
with existing mechanical relays. The characteristic is based on the following
mathematical expression:
Where,
t = operate time in seconds
K = time multiplier
I = measured current value
Iset = set start current value
α = 0.339
β = 0.236
4.15 Configurable Binary Outputs
The relay has total six output contacts, two power contact and four signaling
contacts. Except BO4 (reserved to IRF signaling purpose), remaining can be
individually configured as either Inverted or Non-Inverted and also can be
configure for following different operating modes:
1. Pulse mode (P): In pulse mode, the binary output activates for a fixed duration
of 200 ms when triggered
2. Self-reset mode (S): In self-reset mode, the binary output follows the behavior
of the triggering signal. The output remains in active state till trigger persists.
3. Hold mode (H): Once output is activated, it will remain active even if trigger
signal drops.
Output can be reset by all possible reset input triggers
a local HMI by reset key combination
b Reset binary input
c Reset command from optional communication module via MODBUS
/ IEC60870-5-103.
4. Lockout mode (L): Once output is activated, it will remain active even if
trigger signal drop.
Output can be reset only by
a local HMI by reset key combination and
b Reset binary input.
All above mode also supports Inverted (I) operation.
Operating mode for binary output BO4 is fixed to “Non –
inverted Self-Reset Mode.”
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