Functions
Leuze electronic SOLID-4 21
TNT 35/7-24V
DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS
4.3 Functions of receiver SD4R
No functions can be selected on receiver SD4R.
Attention!
Without start/restart interlock, the outputs of the receiver switch to the ON state immedi-
ately after the device is switched on or afte
r the supply voltage is restored and following
each release of the protective field! The protective device may only be operated without
start/restart interlock in certain exceptional cases and under the conditions of controlling
protective devices acc. to EN ISO 12100-1, EN ISO 12100-2. In this case, care must be
t
a
ken to ensure that it is impossible to step or slip past the optical protective device.
Notice!
To guarantee proper operation, the transmitter that
communicates with receiver SD4R
must be set to transmission channel 1.
4.4 Diagnostics function: Dirt and error signal output
For diagnostic purposes SOLID-4 has a short circuit-proof "Weak Beam/Error Indication"
signal output for forwarding to the machine control unit. Information on connection of the
signal output and a connection example can be found in Chapter 7.
4.5 Test input
As a type 4 AOPD, SOLID-4 has a constant self-monitoring function that independently
detects errors in the system as well as cross and short circuits on the output cables of the
machine interface. An external test signal is not required for this. To test the downstream
contactors, an external control (e.g. protective combination) via a test signal (= pin4 of the
transmitter to 0 V or free) can switch off the OSSD outputs of the receiver and test the drop-
out
of
the switching elements. The test time signal time is a maximum 3 seconds. After the
test the OSSDs also go to the ON-state with activated start/restart interlock, provided the
protective field is not interrupted.
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