D41L
13
Operating Principle
Operating Principle
Magnet control
In the power-to-unlock version of the D41L, the safety door switch is
unlocked when the Solenoid Control signal (= 24V) is set. In the
power-to-lock version of the D41L, the safety door switch is locked
when the Solenoid Control signal (= 24 V) is set.
If the risk analysis indicates the use of a monitored interlock then a
variant with the monitored interlock (D41L-
@
Y) is to be used, labelled
with the
symbol.
The actuator monitoring variant (D41L-
@
Z) is a safety switch with an
interlock function for process protection.
Mode of operation of the safety outputs
In the standard D41L variant, the unlocking of the safety door switch
causes the safety outputs to be disabled. The unlocked guard door
can be relocked as long as the actuator is inserted in the D41L safety
door switch; in that case, the safety outputs are re-enabled.
The guard door must not be opened.
In the D41L-
@
Z version, only the opening of the guard door causes
the safety outputs to be disabled.
If the safety outputs are already enabled, any error that does not
immediately affect the functionality of the safety door switch (e.g. too
high ambient temperature, interference potential at the safety outputs,
cross-wire short) will lead to a warning message, disabling of the
auxiliary output and a delayed shutdown of the safety outputs.
(Refer to
Troubleshooting
on page 17.)
Safety outputs are disabled if the error warning is active for 30
minutes. The signal combination, auxiliary output disabled and safety
channels still enabled, can be used to stop the production process in
a controlled manner. After the rectification of the error, the error
message is reset by opening the corresponding guard door.
Latching Force Adjustment
Adjustment of the latching force
In order to enable trouble-free functionality of the device, the rotary
handle must be in position I or II when the guard door is open.
In the intermediate positions, locking is impossible.
The latching force is changed by turning the rotary handle by 180°.
In position I, the latching force is approx. 25 N.
In position II, the latching force is approx. 50 N.
Diagnostic Function
Diagnostic LEDs
The safety door switch signals the operating condition, as well as
errors through 3-color LEDs.
Green (Power): Supply voltage on
Yellow (Status): Operating condition
Red (Fault): Error (refer to Table 2)/ flash codes red diagnostic LED
Safety door switch with conventional auxiliary output
The auxiliary output OUT can be used for central visualization or
control functions, e.g. in a PLC.
The auxiliary output is not a safety-related output.
• Input signal magnet control
• Normal sequence, door was locked
• Door could not be locked or fault
Key
IN
t
d
200 ms
OUT
OUT
Guard door open
Guard door closed
Unlock guard door
Guard door locked
Locking time
Guard door not locked or fault
