Manual

2–4 Install the CFM Module
Publication 17716.5.99 - December 1995
Set the Input Channel Jumpers
The CFM module has user-selectable jumpers for each flowmeter
and gate input:
• flowmeter jumpers (F0-F3) — set jumper for low-pass filter
(70Hz) or high-speed operation
• gate jumpers (G0-G3) — set jumper for +5-12V or
+12-40V operation
The CFM module is configured for high-speed operation. If any
input channel will be accepting input from a mechanical switch, you
need to set the flowmeter jumper for that input channel to filter
operation. The filter provides debouncing for the mechanical switch.
!
ATTENTION: The frequency of counting must be
less than 70Hz when the filter mode is selected. If the
frequency exceeds 70Hz, the CFM module will not
read the incoming pulse.
Remove the four screws securing the side cover
to the module and remove the covers.
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