Sensia CLIF MOCK CD-20 User Manual

13
CD-20 Sample Probe Controller
Table 3.2—Troubleshooting Tips for 115VAC/230VAC Controllers
Problem Probable Cause Recommended Action
Input power fuse F1 is open. Input power surge above
250VAC.
Check fuse F1. Replace as required.
Transformer T1 has an internal
secondary winding or primary
winding short.
Return to factory for replacement of T1
or power board.
Rectier diode CR2, CR3,
CR4, or CR5 shorted.
Check diodes with an ohmmeter and
return to factory for replacement of
power board or CD-20 motor control.
Input power transformer jumper
is installed incorrectly.
Check for jumper across power input
(115VAC or 230VAC) to Neutral.
Current limit LED is on, the
motor is stopped.
Sample probe jammed or the
motor armature is driving the
probe backwards (clockwise)
against the cam drop off point.
To isolate the problem, power down
and remove the CD-20 from the
probe and verify CD-20 output shaft
turns clockwise as you look at it in
repeat mode. Verify sample probe
can be turned counterclockwise with
a screwdriver and proper discharge is
obtained.
Short across A1 to A2 of CD-20
motor output due to a short in
power FET Q3.
Power down, remove motor leads, and
verify that when power is reapplied,
the current limit light is off. Then check
motor armature resistance to verify the
short circuit. If motor circuit checks out,
return to factory for replacement of CD-
20 motor control assembly.
Bind-up in gear box. Return to factory for replacement of
150:1 ratio gear motor.
Transistor Q4 or Q2 has failed. Return to factory for replacement of
CD-20 motor control assembly or power
board.
Current limit LED is on, motor
runs at a slow speed.
CD-20 current limit circuit
failure.
Return to factory for replacement of CD-
20 motor control.
Motor does not run. Input power not on. Check for proper input voltage at 1TB-1
and 1TB-2.
Fuse clips corroded and F1 is
not making contact or fuse F1
is open.
With power off, check fuse F1 continuity
from 1TB-1 through the F1 fuse clips.
Jumper E1 is not connected to
1TB-3 or 1TB-4.
Connect E1 to 1TB-3 for pulsed mode
operation or 1TB-4 for repeat mode
operation.
Motor circuit open or leads not
connected to 2TB-1 and 2TB-2.
Verify motor wiring. Verify motor
impedance by disconnecting the motor
leads and check for an open armature.
Transistor Q4 or Q2 has failed. Return to factory for replacement of
CD-20 motor control assembly or power
board.

Sensia CLIF MOCK CD-20 Specifications

General

Brand	Sensia
Model	CLIF MOCK CD-20
Category	Controller
Language	English