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Text version of the page
Safety Switches with Separate Actuator, Metal Housing
Subject to technical modifications; no responsibility is accepted for the accuracy of this information. 9
Safety switch TZ with guard locking and guard lock monitoring
Emergency unlocking on the front with
rotary knob
Actuating head fitted left or right
Emergency unlocking
Is used for the manual release of the guard
locking without tools. The emergency unlocking
mechanism must be returned to the locked state
manually. A sealing wire is fitted to protect
against tampering.
Guard locking type
TZ1 Closed-circuit current principle, guard
locking by spring force. Release by
control of AS-i output 0.
Control of the guard locking solenoid
The guard locking solenoid is controlled by the
control system via AS-Interface bus bit D0. In
addition the 24V connection can be switched
safely.
AS-Interface inputs
D0, D1 Door monitoring contact SK
D2, D3 Solenoid monitoring contact ÜK
Evaluation is performed via a safety monitor.
AS-Interface outputs
D0 Guard locking solenoid
D1 Red LED
D2 Green LED
LED function display
The Power LED indicates the operating
voltage at the bus.
The Fault LED indicates if a fault has been
detected on the AS-Interface bus.
The green and the red LEDs can be
controlled as required by the control system
via the bus using bits D1 and D2.
Plug connector M12
4-pin
Dimension drawings actuating head on the left is a mirror image
Ordering table
Series
Connection Guard locking
Switch
Switching element Version Order no. / item
head
LE SK: 1 NC C1937 090278
SEM4 Left ÜK: 1 NC Emergency unlocking TZ1LE024SEM4AS1-C1937
TZ Plug connector
1
M12
Mechanical
RE SK: 1 NC C1937 090279
Right ÜK: 1 NC Emergency unlocking TZ1RE024SEM4AS1-C1937
Please order actuator
separately (see catalog
of safety switches with
metal housing)
36 25
18
40
31
a
b 52 +4
23
100
100
35
110
36
46 ±1
110
36±1
20
22
15
M 8 (4x)
Ø5,5 (4x)
RD GN
Fault Power
Emergency unlocking
a Travel without operation:
actuator is in the guide slot,
however function is not triggered.
b Switching operation completed:
Actuator must be inserted to this
point to ensure reliable switching.
The actuator must be withdrawn at
least to point a for switching off.
ASi + 0 V
24 V ASi -
View of connection side
Connector assignment