Page EN-14
Pointek CLS100 – QUICK START MANUAL
7ML19985QJ83
English
Troubleshooting
Stainless Steel Process Connection (Integral Cable
or Enclosure Version), Intrinsically Safe
Symptom
Cause
Action
Green LED off
Proper power not applied
to device
Power range must equal
12 to 33 V DC at all times
(10 to 30 V DC for IS
versions)
Check power source
Minimum 12 V DC on the terminals
when the signal current is 20 mA
(minimum 10 V DC for IS versions)
Green LED off, with proper
supply
Defective component in
device
Contact distributor
Green LED on and Yellow
LED on while not
responding to product
and/or adjustment
Proper power not applied
to device.
Power range must equal
12 to 33 V DC at all times
(10 to 30 V DC for IS
versions)
Check power source
Minimum 12 V DC on the terminals
when the signal current is 20 mA
(minimum 10 V DC for IS versions)
Hysteresis region too
great
Proper power not applied
to device.
Power range must equal
12 to 33 V DC at all times
(10 to 30 V DC for IS
versions)
Check power source.
Minimum 12 V DC on the terminals
when the signal current is 20 mA
(minimum 10 V DC for IS versions)
Unequal current in red and
black wire
Loop circuitry is DC
biased w.r.t. ground
Black wire e 36
V DC against Ground
Correct loop circuitry
Remove cause of voltage on the
red wire and/or bias
Yellow LED won't come on
or off
Defective component in
device
Contact distributor
Too much current in loop
Supply voltage too high
Ensure power range equals 12 to
33 V DC at all times (10 to 30 V DC
for IS versions)
Red LED lights opposite to
the Yellow LED when this
is not meant to happen
Incorrect polarity on red
and black loop terminals
Reverse polarity on loop terminals
