2
7
1
6
9
5
2
0
1
7
-1
2
22
SLCT* and SLCT*/35 safety light curtains
Installation
4.4
Connection and Operating Mode Setting
Both the supply voltage and the system settings can be connected to the
transmitter unit and receiver unit. The following operating mode settings are also
available:
■
Startup interlock operating mode
■
Relay monitor operating mode
■
A/B mode operating mode
Startup interlock operating mode
The startup/restart interlock ensures that after the supply voltage has been turned
on, or after an interruption in the protection field, the operational readiness state is
indicated when the protection field is free. The start-up enable must then be
actuated so that the safety light curtain turns on the OSSDs.
The function can be activated or deactivated at the 8 pin connector of the receiver
SLCT.
An NC contact between the restart and +24 VDC input is required to trigger the
startup/restart interlock. The startup/restart interlock function does not work if the
restart input is bridged with the status/select output. If the input is not connected,
the startup/restart interlock is activated (see chapter 4.4.4).
Relay monitor operating mode
The relay monitor monitors the switching positions of the downstream output
relay. If the switching position of the relay does not match the signal from the
OSSDs, the system switches to safe mode. The status LED indicates that safe
mode is active.
Danger!
Danger to life due to indirect dispersion of light during operation below the specific
minimum range
If you operate the protective equipment below its specified minimum range, this
can lead to reflection caused by reflective or dispersive objects outside the
specified minimum distances. The resulting malfunction can cause a failure to
detect persons or objects.
■
Observe the minimum range of the protective equipment that you are using.
■
Never operate the protective equipment below this specified minimum
range!
■
During mounting, also note that the conditions for light beam dispersion
may change during operation, e.g. due to moving machine parts or optically
dispersive media.
Note!
When the input is open, the startup/restart interlock is activated.