40
EN
5.5.1 Principle
• By interconnecting several receivers, they can be linked such that they all act upon a single safety output.
•
Response time is increased by 1 ms per additional receiver.
• It is not advisable to cascade more than 5 devices.
•
A minimum clearance of 2 m between light curtains must be maintained in order to prevent inter-
active influence amongst the utilized light curtains (see section 3.4). Even if interactive influence
occurs, system safety is nevertheless maintained in any event.
• In the operation mode „cascading“ the safety light curtains have to be encoded.
5.5.2 Cascading Procedure
Operating Voltage
Emitter 2
Emitter 1
Receiver 2
Receiver 1
Safety PLC
Safety Relay
Operating Voltage
Safety Field 1
Safety Field 2
• The safety output at receiver 1 is active, and is connected to the machine
in accordance with applicable regula-
tions.
• The
cascading DIP switch is set at receiver 1.
•
The cascading DIP switches are set at all downstream receivers as well, except for the last receiver in
the series.
• Obstructions at all safety fields, or system errors, act upon the single common safety output and cause
it to switch.
• Individual settings at each given light curtain (e.g. contactor monitoring, restart inhibit, blanking etc.) only effect
the respective light curtain itself - not all cascaded curtains. However, if the safety output of any given light curtain
is switched, the common safety output at the first light curtain is switched as well!
• To inhibit manipulations at the DIP Switch, it is lockable (see also section 6.3, „Connection to a PC“).
• Attention, the operation mode contactor monitoring must only be set at the receiver 1.
