Honeywell ACS-8 Installation Instructions Manual page 74

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The S1 DIP switch allows certain causes of faults to be directed to the common fault output (see
"connection diagram").
Fault U_ext. (ST1/7), output, LOW active.
This output is active when there is a fault on the external circuit outputs.
Fault SE (ST1/1), input, LOW active.
Fault outputs of other emergency power supply units can be connected to this terminal and cascaded if
required.
Power (ST1/6), output , HIGH active.
This output is active when the power is on.
!U<: (ST1/8), output, LOW active.
Switch-off warning:
This output is low if the battery voltage of 10.8V is not reached. Connecting this output to an AWUG would
allow this information to be relayed.
U_bat <10.5V (ST3/2), output, HIGH active.
This output is set when the power supply is switched off (U_bat <10.5V).
TEST (ST3/1), input, LOW active.
This input makes it possible to carry out a functional test of the output U_bat <10.5V (ST3/2) by applying
a 0V potential. LED3 must light up.
RESET button
During initial commissioning, the line voltage must be present to ensure that the cutoff relay is in the
operating state and that voltage is applied to the power supply unit output.
The reset button is required if the power supply unit is to be operated without line voltage (e.g. for test
purposes). The reset button ensures that the cutoff relay is in the operating state.
This output warns against the imminent switching off of the power supply.
Danger of short circuit!
The "Test" input must only be connected to 0V by means of a switch/button or a relay.
Do not apply a HIGH potential!
Installation Instructions / ACS-8