SIEMENS
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Siemens IK PI · 2015
AS-Interface
ASIsafe
3SF1 mechanical safety switches with solenoid interlocking
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Overview
The 3SF1 safety switches with safety-related communication can
be directly connected using the AS-Interface bus system. The
safety functions no longer have to be conventionally wired up.
With the 3SF1 safety switches the ASIsafe electronics compo-
nent is integrated in the switch enclosure.
3SF1 safety switch with solenoid interlocking and
with integrated ASIsafe electronics
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
switch and must be ordered separately. There are eight variants
to choose from, depending on the application.
The actuator is encoded. Simple overruling by hand or auxiliary
devices is impossible.
A high-grade steel blocking insert for attaching up to eight
padlocks is available for even more safety.
A rubber cap to protect the actuator entry of the actuator head
from contamination is available for operation of the enclosures in
dusty environments.
Solenoid interlocking
There are two versions for interlocking the actuator:
•
Spring-actuated lock (closed-circuit principle) with various
release mechanisms
•
Solenoid-locked (open-circuit principle)
Display
The switches have a status display with four LEDs:
•
LED 1 (green):
AS-i
•
LED 2 (red):
FAULT
•
LED 3 (yellow):
F-IN1
•
LED 4 (yellow):
F-IN2
Connection
Connection to the AS-Interface is by means of a 4-pole M12 con-
nector socket (plastic version) connected to the yellow AS-Inter-
face bus cable (no additional supply of auxiliary power is re-
quired thanks to the low current consumption of the solenoid of
max. 170 mA).
Benefits
The new generation of 3SF13
safety switches with solenoid
interlocking offers:
•
More safety through higher locking forces:
- 1300 N for the plastic version
- 2600 N for the metal version
•
Various release mechanisms:
Lock release, escape release and emergency release
•
ASIsafe electronics integrated in the enclosure;
connected through 4-pole M12 connector
•
Current consumption of the solenoid maximum 170 mA
•
Two contact blocks as standard equipment,
hence fewer versions needed
•
Same dimensions for all enclosure versions:
Plastic, metal
•
An extensive range of actuators
•
Status display with four LEDs
Operating conditions
The safety switches with solenoid interlocking are exceptional
safety-related devices which prevent an unforeseen or inten-
tional 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).
The safety switches with solenoid interlocking have the following
functions:
•
Enabling the machine or process with closed and locked
protective device
•
Locking the machine or process with opened protective
device
•
Position monitoring of the protective device and solenoid
interlocking
Standards
The switches comply with the standards IEC 60947-1 (Low-Volt-
age Switchgear and Controlgear, General) and IEC 60947-5-1
(Electromechanical Control Circuit Devices).
The mechanical design of the switches corresponds to the re-
quirements of the fail-safe principle according to EN 1088.
Approvals
AS-Interface according to EN 50295 and IEC 62026-2.
The switches are approved for use with locking devices accord-
ing to EN 1088 and EN 292, Parts 1 and 2.
3SF53 safety switches with solenoid interlocking have a VDE test
mark.
With a 3SF13 safety switch it is possible to achieve Category 3
according to ISO 13849-1 or SIL 2 according to IEC 61508.
Category 4 according to ISO 13849-1 (EN 954-1) or SIL 3
according to IEC 61508 can be achieved by using an additional
3SE5 safety switch.
The 3SF1 safety switches are approved according to UL 508,
UL 50 and UL 746-C.
© Siemens AG 2014