Functions
20
SOLID-4
Leuze electronic
DEUTSCH
E
NGLISH
FRANÇAIS
IT
A
LIANO
ESPAÑOL
N
EDERLANDS
Activate the start/restart interlock:
➢
with corresponding connection of the SOLID-4E receiver (see Chapter 7)
➢
or in the downstream safety interface (e.g. MSI series also for Leuze electronic muting or
control functions)
➢
or in the downstream machine control unit
➢
or in the downstream safety PLC
If the internal start/restart interlock is activated as described in Chapter 7, the interlock
functions are monitored dynamically. The SD4R-E receiver is only switched back to the
ON-state after the start button has been pressed and released again. A further precondition
here is, of course, that the active protective field is free.
If both the SOLID-4E-internal and a subsequent start/restart interlock are activated, the
SOLID-4E will only perform a reset function with its assigned start button (confirmation).
4.2.3
Contactor monitoring (EDM)
Warning!
The contactor monitoring of the SOLID-4E can be activated with corresponding connection
(see Chapter 7)!
The "Contactor monitoring" function dynamically monitors contactors, relays or valves
downstream from the SOLID-4E. Precondition here are switching elements with positive-
guided feedback contacts (normally closed).
You can implement the contactor monitoring function
➢
with corresponding connection of the SOLID-4E receiver (see Chapter 7)
➢
or the external contactor monitoring of the downstream safety interface
(e.g. Leuze electronic MSI series)
➢
or the contactor monitoring of the downstream safety PLC
(optional, connected via a safety bus)
If the contactor monitoring function is activated (see Chapter 7), it works dynamically, i.e. in
addition to verifying that the feedback circuit is closed before turning on the OSSDs, the
system checks whether the feedback circuit has opened within 500 ms of being enabled
and whether it has closed again within 500 ms when turning off the OSSDs. If this is not the
case, the OSSDs return to the OFF state again after being briefly switched on. An error
code appears on the 7 segment display (F34) and the receiver goes to the error locking
status, from which it can only be returned to normal operation by switching the supply
voltage off and back on again.
Fig. 4.2-3:
Contactor monitoring function, combined in this example with RES
interlock
