SIGNAL - This will flash each time a signal is being
received. For the 21R22 receiver, this also indicates
a proper address was received.
K1 through Kxx - indicates the corresponding relays
are energized.
A1 through A4 (R14) or SCAN 1 through SCAN 3
(R22) - These LEDs cycle while the receiver is
scanning. When on steady, it indicates which
frequency the receiver is locked on to.
OPI and OPR - When the receiver is either in standby
or has detected a problem which requires the system
to be shut down, OPR will be off and OPI will be
on. This releases the main contactor on the crane
and prevents any operation of the crane.
During normal operation, with the transmitter turned
on, OPR will be on and OPI will be off. The main
contactor on the crane will be energized and the
decoder will be enabled to control the crane
functions.
Receiver Troubleshooting.
1. Check the POWER on indicator. If it's not lit, make
sure the power switch on the right hand side of the
receiver cabinet is in the on position.
Check the fuse on the relay board next to TB3
(TB4 on the 21R22) and replace if necessary.
Check for A.C. input power between terminals X1
and X2 of the terminal strip. If AC power is present
and the POWER on LED is not on replace the
relay board.
2. Make sure the transmitter is off. Turn the receiver
power switch off then on. Check that the OPI is
on. If no indicators come on after 1 second, the
microprocessor circuits are possibly defective.
Replace the RF/Decoder board.
3. Turn the transmitter on. If the SIGNAL LED remains
off, test the transmitter.
Verify the identity code is the same for the transmitter
and receiver.
Replace the RF/Decoder board.
4. Turn the transmitter on. If the SIGNAL LED lights
but the ADDRESS LED does not, there is a
difference between the transmitter and receiver
address code. Change the identity code on the
transmitter or receiver so that they are the same.
Refer to section 5.2 for setting the identity code.
5. If only some of the functions are operating, check
to see if the relay LED's come on for the inoperative
functions.
Check the output voltage of the respective relays
and the crane circuits.
Check the condition of the transmitter switches.
If the unit is new, check the configuration sheet to
verify the function has been programmed.
6. If you experience intermittent operation, check all
connections and make sure that the terminal strips
SECTION 3: TROUBLESHOOTING
3.2
WARNING !
Throughout the troubleshooting procedure,
work is performed within the receiver cabinet
while the system is powered. Certain points
in the cabinet contain dangerous voltages.
Use extreme caution when working inside
the cabinet with power on.
AVERTISSEMENT !
Tout au long des procédures de dépannage,
un travail est effectué dans le boîtier puisque
le système est sous tension. Certains
endroits du boîtier contiennent des tensions
dangereuses. Être extrêmement vigilant lors
de travaux à l’intérieur du boîtier lorsque le
système est sous tension.
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