Datasheet

D4SL-N / D4SL-NSK10-LK@
21
Application Example
Note: The above PL is only the evaluation result of the example. The PL must be evaluated in an actual application by the customer after confirming
the usage conditions.
●Application Overview
• After the opening of the guard is permitted by turning ON of the lock release enable signal, the guard is opened by operating the lock release
switch S4.
• The guard status is monitored by the Safety Limit Switch S1 and Guard Lock Safety-door Switch S2, and a state in which the power supply to
the motor M is turned OFF must be maintained while the guard is open.
• When the guard is closed, lock status is ensured, and the reset switch S3 is pressed, the power supply to the motor M is permitted.
Highest achievable PL/
safety category
Model Stop category Reset
PLe/4 equivalent
Guard Lock Safety-door Switch D4SL-N@E@A-@ (Mechanical Lock Type)
Safety Limit Switch D4N/D4F/D4B-N
Safety Relay Unit G9SE-201 (24 VAC/VDC)
0 Manual
A1 T11 T31 T32 T33 13 23T12
A2 T21
X1
14
24
T22
Auxiliary
output
Power
supply
circuit
Safety
Input1
Safety
Input2
Reset/
Feedback
Input
Safety
Output
(Instant
aneous)
64
63
22
21
34
33
S3
KM1
KM2
KM1
KM2
M
S4
Lock release
enable signal
Guard
24 V
41
42
S2
S1
12
11
Condition monitoring of
Safety-door Switch
Feedback loop
PLC etc. KM1 KM2
10 9
1 2 3 4 5 6 7 8
open
KM1 and KM2 (NO)
Motor M rotation
Reset switch S3
Lock release switch S4
Lock release enable signal
Safety Limit Switch S1
Guard Lock Safety-door Switch S2
Door open/closed monitor contact
Guard Lock Safety-door Switch S2
Lock monitor contact
Guard closesGuard opens
Timing Chart
Guard can be opened
S1: Safety Limit Switch with direct opening mechanism
S2: Guard Lock Safety-door Switch D4SL-N@E@A-@
S3: Reset switch
S4: Lock release switch
KM1 and KM2: Magnetic contactor
M: Motor
Note: The lock release enable signal must be configured so that
it should turn ON after dangerous movement is stopped
and safety is ensured for the door to open.