Figure 10

Power Fail signal example

at AC switch off

Power Fail

V1

V2

Figure 11

V1 warning time example at Power Fail signal 230

VAC 250 W load (35 ms)

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6

Signals

Power Fail

Figure 9

Pin 7 CON 1

Power Fail

Collector

Power Fail

Emitter

Pin 8 CON 1

POWER SUPPLY

Transistor On (<0.8 V): Input & Output Not OK

Transistor Off (>4.5 V): Input & Output OK

2K2

5 V Standby Rtn

Pin 1, 3 & 5

CON 1

Pin 2, 4 & 6

CON 1

5 V Standby

Signal Connector

8V Max 3 mA

Power Fail

V1

Characteristic

Notes & Conditions

Signals

Power Fail

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

Remote On/Off (Inhibit/Enable)

Uncommited isolated optocoupler diode, powered diode inhibits the supply (see fig.12-17)

Standby Supply V2

Isolated 5 V/0.5 A supply, always present when AC supplied.