Full Product Manual

Appendix C: Troubleshooting
111
Cause
The zone isn’t configured to read a
4–20mA sensor.
Solution
PressSETandCONFIGUREto
program the zone. See Chapter 4 for
information on zone configuration.
4–20mA MONITORING:
Problem 1
Can’t program 4–20mA range; or the unit won’t read the 4–20mA
sensor.
Cause
a)Nopowerconnectedtothe
transducer.
b)Incorrectwiring.
c)Thetablerangeisincorrectly
programmed.
d)Theinputisnotconfiguredfor
4–20mA.
e)Multipledevicesconnectedinloop.
Solution
Connect a power supply as shown in
Chapter 2.
Inspect wiring. Make sure polarity is
correct as shown in Chapter 2.
Program the table range for the
cailibrated range of the transducer.
Configure the zone for 4–20mA.
Refer to Chapter 4.
The 1400’s zone is single-ended
andterminatestoground.Because
of this, the 1400 must be the last
device in the loop, and in some
cases the ONLY device. For certain
installations, it may be necessary to
use a signal isolator.
Problem 2
The zone input is not reading correctly.