Toshiba GR-200 Series Instruction Manual page 94

Time characteristic
The user should set DT for the scheme switch [SEF1-Timer]. The value of the required operate
time is set for the setting [TSEF1] in the range 0.00–300.00s.
Instantaneous activation
The operate time of the instantaneous characteristic is achieved by setting zero for the [TEF1],
but the instantaneous one can be also obtained when the logic signal '1(High)" is programmed
to be injected at the PLC connection point "SEF1_INST_OP".
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6F2T0200 (0.15)
GRE200 (1,2)