Siemens SIRIUS 3SE28 Series Operating Instructions Manual page 3

SIRIUS
Safety Position Switch
with locked engagement, metal enclosed.
Operating Instructions
Read and understand these instructions before installing,
operating, or maintaining the equipment.
DANGER
!
Hazardous voltage.
Will cause death or serious injury.
Disconnect power before working on equipment.
CAUTION
Reliable functioning of the equipment is only ensured with
certified components.
Important notice
The products described herein are designed to be components of a
customized machinery safety-oriented control system. A complete
safety-oriented system may include safety sensors, evaluators, actua-
tors and signaling components. It is the responsibility of each company
to conduct its own evalution of the effectiveness of the safety system by
trained individuals. Siemens AG, its subsidiaries and affiliates (collec-
tively "Siemens") are not in a position to evaluate all of the characteris-
tics of a given machine or product.
Siemens accepts no liability for any recommendation that may be
implied or stated herein. The warranty contained in the contract of sale
by Siemens is the sole warranty of Siemens. Any statements contained
herein do not create new warranties or modify existing ones.
Installation
Fig. 1: Dimension drawings (dimensions in mm).
Mounted on a flat surface with three M5 screws
(1.5 to 2 Nm).
Always make use of the plain washers and spring washers.
The device can be mounted in any position.
Cable cross sections and tightening torque
0.5 - 2.5 mm²
0.5 - 1.5 mm²
The cable glands (M20x1.5 resp. Pg 13.5) must be care-
fully sealed so as not to reduce the degree of protection
IP67.
Close the unused gland with a cap.
Order No.: 3ZX1012-0SE38-1AA1
Nominal travel
Fig. 2:
1 to 1.2 Nm
31-32
43-44
31-32
43-44
Electromagnet
ON
Legend:
Contact open Contact closed
Locking types
• Locking with spring force (closed-circuit principle,
F-Type, Figure 6)
Actuator inserted and mechanically locked. It is unlocked
by applying voltage to the magnet or manually by means
of the auxiliary release if the power fails or by means of
the key (depending on the version).
- Auxiliary release, unlocking by means of the key and
escape release are only permitted if the tumbler fails.
- Unlocking by means of the key (Figure 1):
Auxiliary release by an authorized person turning the
key causes the tumbler to be unlocked. The actuator
is enabled for withdrawing.
Turning the key in the opposite direction after the dan-
gerous situation has been rectified causes the device
to return to the normal operating status. The key can
then be removed.
- Escape release (Figure 1):
Manual actuation of the EMERGENCY-STOP push-
button by any person in the danger zone causes the
tumbler to be unlocked. The actuator is enabled for
withdrawing.
An authorized person turning the key (clockwise) after
the dangerous situation has been rectified causes the
device to return to the normal operating status. The
key can then be removed.
Safety switches with the escape release option must
be installed inside the danger zone. The escape
release may only be activated to enable leaving the
danger zone in the event of a system failure.
• Locking with electromagnetic force (open-circuit
principle, M-Type, Figure 6)
Actuator unlocked. It is locked by applying voltage to the
magnet.
3SE28..
3SE38..
English
21-22
13-14
31-32
Protective device
43-44
31-32
Locking device
43-44
Electromagnet
OFF
Direction of actuation
3