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Characteristic
Notes & Conditions
Signals
Uncomitted opto isolated transistor, normally off when AC is good (see fig.9 - 11)
Provides ≥ 5 ms (typically 20-30ms) warning of loss of output from AC failure
Power Fail
Remote On/Off (Inhibit/Enable)
Standby Supply V2
Uncommited isolated optocoupler diode, powered diode inhibits the supply (see fig.12-17)
Isolated 5 V/0.5 A supply, always present when AC supplied.
Signals
Power Fail
POWER SUPPLY
Pin 2, 4 & 6
CON 1
2K2
5 V Standby
8V Max 3 mA
Pin 7 CON 1
Power Fail
Collector
Figure 9
Transistor On (<0.8 V): Input & Output Not OK
Power Fail
Emitter
Transistor Off (>4.5 V): Input & Output OK
Pin 8 CON 1
5 V Standby Rtn
Pin 1, 3 & 5
CON 1
Signal Connector
Power Fail
V1
Power Fail
V2
V1
Figure 11
Figure 10
V1 warning time example at Power Fail signal 230
VAC 250 W load (35 ms)
Power Fail signal example
at AC switch off
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