Honeywell SYA14 Series, Manual

Page: 330 / 737

Inspection and Maintenance FF-SM Series Installation Manual
56 Honeywell
•
PK 107007-01 EN FR26 GLO 0298 Printed in France For application help: see Warranty Information
Troubleshooting Flow Diagram (Sheet 2 of 2)
Continued from
Sheet 1 of 2.
Control unit sensing threshold
indicator (excess gain) is
flickering.
Do the following:
Isolate sensor from machine control circuitry as follows:
Label, then disconnect A1/A2, B1/B2, C1/C2 wires from control unit.
Adjust excess gain; refer
to Connections and Setup
section of manual.
Problem
resolved?
Machine
Working
Yes
No
Yes No
Remove fiber optic cable connected
to control unit; connect optical
jumper* to control unit.
Control unit
output status
LED is green?
No
Replace control
unit.
Connect control unit to
machine control
circuitry. Return
defective control unit.
Machine
Working
Connect
sensors to
control unit.
Problem
resolved?
Yes
No
Adjust excess gain; refer
to Connections and Setup
section of manual.
Optical element(s) failure;
Only one sensor connected
to control unit (no optical
extension cord)?
Yes Yes
Replace sensor.
Return defective
one.
Connect control unit to machine
control circuitry. Adjust excess
gain; refer to Connections and
Setup section of manual
Machine
Working
Move optical jumper to the next
optical element (sensor or optical
extension cord) and adjust excess
gain
Control unit
output status
LED is green?
Replace the
defective mat
sensor/optical
extension cord.
No
No
Yes
* Optical jumper: Connect one side of the
fiber optic cable to the control unit.
Jumper the two remaining connectors (on
the other side of the cable) with one ST
cable-to-cable connector.
No more
elements
to verify.
For product return information, see Warranty Information on page 61.