Honeywell FF-LS082802362, Руководство по установке

Страница: 37 / 46

37
107022-16 EN FR26 GLO 301 Printed in Germany
5.3. Troubleshooting
POWER APPLIED TO MACHINE CONTROL SYSTEM
Before intervention, turn off and disconnect power from FF-LS Series safety light curtain and machine.
Failure to comply with these instructions could result in death or serious injury.
If a protective safety equipment (FF-LS safety light curtains or machine safety control equipment monitored by the FF-LS)
failure occurs during self-check or test input, the protective safety equipment is locked in an OFF condition. This OFF
condition cannot be defeated by turning the power supply voltage OFF and ON.
Table 5-4 Troubleshooting chart
Failure Possible cause Inspect and repair
Sensing field is clear, but the protective
safety equipment will not release after
actuation of an external reset push button
switch.
Green LED indicator is illuminated. Open circuit between output relays
and machine control circuitry. Inspect terminal wiring and, if
necessary, repair wiring.
Blown fuse at output relay terminals. Replace fuse.
Sensing field is clear, but the protective
safety equipment will not release after
actuation of an external reset push button
switch.
Red LED indicator is illuminated. Open circuit between both or one of
the sensing units and the control unit. Ensure correct terminal polarity and
proper cable connection between the
sensing and control units.
Translucent surface of sensing units
are contaminated. Clean surface.
Sensing unit is defective. Replace sensing unit (matched pair).
Faulty reset pushbutton or open
circuit. Replace reset pushbutton or repair
wiring.
Sensing field is clear, but the protective
safety equipment will not release after
actuation of an external reset push button
switch.
No LED indicator is illuminated. No supply voltage to the control unit. Inspect terminal wiring and, if
necessary, repair wiring.
Blown fuse at supply voltage terminal. Replace fuse. See fuse
replacement. (see chapter 5.4.1)
During normal operation the red LED 5,
located near microprocessor on circuit
board in control unit (see Figure 5-2),
pulses (illuminates) every 3 seconds.
If there is no release when the sensing
field is clear, the red LED 5 may:
Illuminate continuously
Faulty synchronization Replace control unit.
Flicker one time Faulty self test Replace control unit.
Flicker two times Faulty communication Replace matched sensor units.
Visually inspect cable pair and
replace if required.
Flicker three times Faulty communication sensor A Visually inspect sensor cable A and
replace if required.
Flicker four times Faulty communication sensor B Visually inspect sensor cable B and
replace if required.
Flicker five times Faulty installation parameters Visually inspect compatibility of
sensor and control unit components.
Ensure the beam number labels on
all of the components are the same.