Pulse Input Connection - ABB F4HC Manual

5.2.2 Pulse input connection

The calculator can accumulate pulses from other
meters, such as electricity meters, cold and warm
water meters and gas meters. Pulse input shall be
connected to the terminal marked IN and the
outputs from the other device shall be of the type
"Open Collector".
Pulse input 1, connect
"+" to "IN 1" and
"-" to "IN -"
Pulse input 2, disabled
Specification input :
Min pulse duration 250ms, Voltage: 3V. The pulse
registers act as a volume accumulator, see also
Pulse counter 1.3.3.
Note: The jumpers on slot C and D must be
correctly set according to the marking on
circuit board otherwise the output will not
work.
7