• The interference suppressors must be connected in parallel with
K1 and K2 relay coils.
Instruction related to the connection cable.
Instruction related to the connection cable.Instruction related to the connection cable.
Instruction related to the connection cable.
• For cable length longer than 50m, use cables with a ø1mm
2
section.
• Connect earth terminals of the emitter, the receiver and the control
unit to the main earth of the machine.
• The emitter and receiver cables should be installed far from any
high-power cables. This is also valid for cables used for the test
command and the self-diagnostic signal.
• If the control unit is located far from the emitter and receiver (for
a distance longer than 50m), it is recommended to use shielded
cables.
• The safety barrier should be installed far from any high-power
supply or any electromagnetic field source.
Test command.
Test command.Test command.
Test command.
• Test is applied when connection between terminals 15 and 16 is
made. Normally open contact of an external push-button can be
used. The temporary closing of that normally open contact gene-
rates a test sequence.
• The contact between terminals 15 and 16 must be maintained for
at least 10ms to generate a test sequence. This must be observed
particularly if the test sequence is automatically generated by a
Programmable Logical Controller (PLC).
• Test duration is 100ms which means that relays A and B will be
energized 100ms after the test is applied.
• If the test command is activated while a test sequence is being
performed, it will interrupt the current test sequence and a new
test sequence will start for another 100ms period. Activating the
test command twice within the 100ms period is therefore not
recommended.
• Contact used to generate a test sequence must be able to switch
a 20mA/24V
dc
signal.
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