SIEMENS
12/103
Siemens IC 10 · 2017
SIRIUS 3SF1 Mechanical Safety Switches for AS-Interface
With Tumbler
General data
12
■
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 wired up conventionally.
With the 3SF1 safety switches the ASIsafe electronics compo-
nent is integrated in the switch enclosure.
3SF1 safety switch with tumbler 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 actuators are not included in the scope of supply of the
safety switch and must be ordered separately from a choice of
different versions to suit the application
(see page 12/102)
.
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.
Tumbler
There are two versions for interlocking the actuator:
•
Spring-actuated lock (closed-circuit principle) with various
release mechanisms
•
Solenoid-locked (open-circuit principle)
For more explanations,
see page 12/64
.
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 connector socket (plastic version) connected to the yellow
AS-Interface bus cable (no additional supply of auxiliary power
is required thanks to the low current consumption of the solenoid
of max. 170 mA).
■
Benefits
The new generation of 3SF13 safety switches with tumbler offers:
•
More safety through higher locking forces:
- 1 300 N for the plastic version
- 2 600 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 socket
•
Current consumption of the solenoid no more than 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
•
3SF1324-1S.21-1BK4 series with high degree of protection
IP69K, IP69 in accordance with IEC 60529, cover with foamed
seal
■
Application
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).
The safety switches with tumbler 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 tumbler
Standards
The switches comply with the standards IEC 60947-1
(Low-Voltage Controlgear, General) and IEC 60947-5-1
(Electromechanical Control Devices).
The mechanical design of the switch corresponds to the require-
ments of the fail-safe principle according to EN ISO 14119.
Approvals
AS-Interface according to EN 50295 and IEC 62026-2
The switches are approved for use with locking devices
according to EN ISO 14119 and EN 292, Parts 1 and 2.
3SF13 safety switches with tumbler have a VDE test mark.
With a 3SF13 safety switch with tumbler it is possible to achieve
Category 3 according to EN ISO 13849-1 or SIL 2 according to
IEC 61508.
Category 4 according to EN ISO 13849-1 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 2016