S
ervice Manual
Remote Control Cable/Radio
566
12.
S
afety Facilities
In addition to manual switch-off (EMERGENCY
OFF button), the radio remote control is provided
with automatic facilities to immediately interrupt
or inhibit work operations in the event of a radio
fault.
1. SAFETY TEST DURING COMMISSIONING
After switch-on, the receiver first tests whether its
radio channels are free and undisturbed.
If a signal is received, the receiver immediately
returns to the state: FAULT.
NOTE: After reception of a VALID signal, the
receiver reverts to the state: READY.
2. SAFETY CHECK DURING OPERATION
The operational status will be suspended by:
•
switching the system off manually.
•
actuating one of the EMERGENCY OFF but-
tons.
•
undervoltage of the transmitter battery.
The undervoltage monitor will shut down the
transmitter if battery voltage falls below the
safety threshold. Work may proceed after exchang-
ing the battery.
•
receipt of an invalid “telegram”
Transmission of the control commands from the
transmitter to the receiver is effected
using “telegrams”. These telegrams consist of a
so-called basic code (“address telegram”)
in addition to the actual control command. It is on
the basis of this basic code that the
receiver recognizes the “voice of its transmitter”.
Invalid telegrams may be caused, for example, by:
•
interference due to external transmitters
•
radio shadows
•
contradictory control commands
IMPORTANT! Should you note during operation
that the machine does not execute any control
commands:
•
press the EMERGENCY OFF button and
switch off the transmitter power supply.
•
Set all controls of the transmitter to “0” or
“OFF” position.
•
Change location (the transmitter may be in a
radio shadow).
•
Unlock the EMERGENCY OFF buttons by
turning them to the right, and switch on the
•
ransmitter power supply.
The equipment is ready for operation again.
Fuses
(not included in new series)
Sockets to receive two fuses are built into the
upper part of the receiver.
0.4 A = receiver
1.6 A = charger
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