ABB Relion 670 series - Page 107

IEC01000240_2_en.vsd
Activating
signal 2
LED 2
Manual
reset
Activating
signal 1
Automatic
reset
LED 1
Disturbance
tRestart
Disturbance
tRestart
IEC01000240 V2 EN-US
Figure 26: Operating sequence 6 (LatchedReset-S), two different disturbances
Figure 27 shows the timing diagram when a new indication appears after the first one has reset
but before tRestart has elapsed.
IEC01000241_2_en.vsd
Activating
signal 2
LED 2
Manual
reset
Activating
signal 1
Automatic
reset
LED 1
Disturbance
tRestart
IEC01000241 V2 EN-US
Figure 27: Operating sequence 6 (LatchedReset-S), two indications within same disturbance
but with reset of activating signal between
Figure 28 shows the timing diagram for manual reset.
1MRK 502 066-UUS B Section 5
Local Human-Machine-Interface LHMI
101
Technical manual