SIEMENS
12/63
Siemens IC 10 · 2017
SIRIUS 3SE5, 3SE2 Mechanical Safety Switches
With Tumbler
General data
12
■
Overview
The safety switches with tumbler are exceptional safety-related
devices which prevent an unforeseen or intentional opening of
protective doors, protective grilles or other covers as long as a
dangerous situation is present (i.e. follow-on motion of the
switched-off machine).
3SE5 safety switch with tumbler
The safety switches with solenoid interlocking are comprised of
a switch part with electromechanical interlock and a mechanical
actuator which has to be ordered separately.
They are rugged protective devices that enable the greatest
possible safety for man and machine.
The safety switches with tumbler are offered in plastic or metal
enclosures.
Dimensions (W × H × D): 54 mm × 185 mm × 43.5 mm
Operation
The actuator head is included in the scope of supply. For actua-
tion from four directions it can be adjusted through 4 × 90°. The
switches can also be approached from above.
The actuator is not included in the scope of supply of the safety
switches and must be ordered separately from a choice of
different versions to suit the application
(see page 12/70)
.
Actuation data:
•
Maximum actuating speed
v
max
= 1.5 m/s
•
Minimum actuating speed
v
min
= 0.4 mm/s
•
Minimum force in the direction of actuation
F
min
= 30 N
The actuator is encoded. Simple overruling by hand or auxiliary
devices is impossible.
Radius actuators
The safety switches with radius actuators are particularly
suitable for rotary protective devices. The movable actuation key
allows even small radii to be approached. Damage to the switch
and the actuator due to inaccurate approach is prevented.
Locking devices
A high-grade steel locking device for attaching up to eight
padlocks is available for even more security
(see page 12/70)
.
Dust protection
A rubber cap to protect the actuator entry of the actuator head
from contamination is available for operation in dusty
environments
(see page 12/70)
.
Tumbler
There are two versions for interlocking the actuator:
•
Spring-actuated lock (closed-circuit principle) with various
release mechanisms
•
Solenoid-locked (open-circuit principle)
The spring-actuated lock switch is equipped with an auxiliary
release for emergency situations or setup mode. Available as
options:
•
Escape release or
•
Emergency release
Contact blocks
The safety switches with tumbler have one switching block each
for:
•
Monitoring the actuator or the position of the protective door
•
Monitoring the position of the solenoid
The mechanical design of the switches corresponds to the
requirements of the fail-safe principle according to
EN ISO 14119.
Optical signaling equipment
The safety switches with tumbler are available with an optional
optical signaling device.
The signaling device indicates the switch position of the
interlock and the protective device optically by means of 2 LEDs
on the front.
Internal wiring:
•
The yellow LED is pre-wired to the magnetic monitoring
NO contact.
•
The green LED is pre-wired to the actuator monitoring
NC contact.
•
LED ground is pre-wired to the ground of the solenoid.
Note:
•
The operational voltage must be connected to the
corresponding contacts by the customer.
•
This voltage for the LEDs must match the operational voltage
of the solenoid (same potential).
Protective device
Tumbler
Display
Meaning
Closed
Released
Actuators
able to be pulled
Closed
Locked
Actuators
locked
Open
Released
Actuators
pulled
© Siemens AG 2016