Troubleshooting - Cedes cegard/Max-NT Installation And Operation Manual

cegard/Max-NT

5. Troubleshooting

If the light curtain does not operate as described in Chapter 5.5 Power-up and Test, the following troubleshooting
procedure is useful for remedying any installation problems:
Problem
Power
No function
¡
door open
Door open
and
Detection Zone
is Clear
Random door
opening
Receiver
problem
Transmitter
problem
Transmitter
and
receiver
problem
Caption:
: LED off
: LED on
: LED Flashing
12
LED Indicator Status
Light
Nudging Rx-Error Tx-Error
curtain
¡ ¡ ¡
¡ ¡
or
¡
¡
or
¡
¡
or
¡
¡ ¡
or
¡
¡
or
¡
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Installation and Operation Manual
• Power supply good?
• Fuse blown?
¡
• Power wire broken or not connected?
• Defect control unit?
• Verify that all beams are clear of obstruction.
• Are the sensor LEDs facing each other?
• Are sensors or vision shields dirty?
¡
• Bad alignment? Excessive EMC interference e.g. from
door drive or fluorescent lamps?
• No or bad grounding (PE) connection?
• Are sensors or vision shields dirty?
• Excessive EMC interference e.g. from door drive or fluo-
rescent lamps?
• No or bad grounding (PE) connection?
¡
• Damaged cable to the receiver or transmitter, check for
break in the cables by moving the cable by hand?
• Interference with other infra red sensors with the receiver
directly or via mirroring from shiny surfaces?
• Receiver not connected?
• Transmitter connected to the receiver plug instead of the
¡
transmitter plug?
• Cable to the receiver broken or defective receiver?
• Extension cables too long?
• Transmitter not connected?
• Receiver connected to the transmitter plug instead of the
receiver plug?
• Cable to the receiver broken or defective transmitter?
• Extension cables too long?
• Transmitter and receiver connected?
• Transmitter and receiver connected to the correct plug?
What to check?
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