Donaldson Company, Inc.
14
EXT IN 1
External input #1, EXT IN, allows the operator to
control the service interval fault light in the
maintenance required panel with an external
device, such as a high level control in a dust
container, instead of using the internal timer. One
terminal connects to neutral. The second terminal
connects to a voltage source, either 120-Volt AC or
24-Volt DC, through a normally open switch
provided by the external fault indication device.
The EXT IN functions only if the configuration in
the microprocessor was factory-set to read this
input rather than the internal clock method of
indicating a time-based service interval. If the
service interval light is controlled by the internal
clock, EXT IN 1 functions the same as 2 through 5.
EXT IN 2 through 5
External input 2 through 5 provides for an external
input from customer-specified indication devices.
One terminal connects to neutral. The second
terminal connects to a voltage source, either 120-
Volt AC or 24-Volt DC, through a normally open
switch provided by the external fault indication
device. When the external switch closes due to a
fault condition, the matching LED illuminates on
the panel and stays lit until the fault switch opens
again. When the service interval function is based
on an external switch, that function always
occupies EXT IN 1.
External Input
+ON/OFF
EXT IN #1
EXT IN #2
EXT IN #3
EXT IN #4
EXT IN #5
