SIEMENS
4/24
Siemens IK PI · 2015
AS-Interface
ASIsafe
3SF1 mechanical safety switches with solenoid interlocking
Plastic housings
4
■
Overview
5 directions of approach
·
Degree of protection IP66/IP67
•
Slow-action contacts:
- Version -1BA1: ASIsafe channel 1 on 1 NC contact from the
actuator and channel 2 on 1 NC contact from the solenoid
- Version -1BA3: ASIsafe channel 1 on the first NC contact
from the actuator and channel 2 on the second NC contact
from the actuator
-
Version -1BA4: ASIsafe channel 1 on 2 NC contacts from the
actuator and channel 2 on 1 NC contact from the solenoid. A
discrepancy between the two contacts of the actuator will be
evaluated already in the switch.
•
Solenoid: Rated operational voltage 24 V DC
•
1 300 N locking force
•
Status display with 4 LEDs 24 V DC;
1: AS-i, 2: FAULT, 3: F–IN1, 4: F–IN2
Safety level
The new 3SF1324-1S.21-1BA4 safety switches are also recom-
mended where there are several protective door interlocking de-
vices where reliable diagnostics and quick restart capability of
equipment is required.
•
A response is received from the solenoid.
• No
opening of the doors after the solenoid is unlocked.
SIL 2 according to IEC 61508 or PL d according to ISO 13849-1
can be achieved with the AS-i safety monitor or in the DP/AS-i F-
Link.
Comparison of versions
■
Selection and ordering data
For online configurator see
www.siemens.com/sirius/configurators
.
q
Positive opening according to IEC 60947-5-1, Appendix K.
1)
Supplied without actuator. Please order separately.
Note:
For actuators and optional accessories see page 4/22.
Version
Contacts
Achievable
safety level
Diagnostics
Reclosing condition
after unlocking the solenoid
Actuator / solenoid
Solenoid feedback
(depending on the type of
evaluation)
3SF1324-1S.21-1BA1
1 NC / 1 NC
SIL 1 / PL c
✓
Door does not
have to be opened
1 NC / 1 NC
SIL 2 / PL d
✓
Door has to be opened
3SF1324-1S.21-1BA3
2 NC
SIL 2 / PL d
--
Door does not
have to be opened
3SF1324-1S.21-1BA4
2 NC / 1 NC
SIL 2 / PL d
✓
Door does not
have to be opened
Interlock
1)
Contacts
Article No.
Actuator / solenoid
1300 N locking force · Enclosure width 54 mm
3SF1324-1SD21-...
Spring-actuated locks
• With auxiliary release
1 NC / 1 NC
q
3SF1324-1SD21-1BA1
• With auxiliary release
2 NC / –
q
3SF1324-1SD21-1BA3
• With auxiliary release
2 NC / 1 NC
q
3SF1324-1SD21-1BA4
• With auxiliary release with lock
1 NC / 1 NC
q
3SF1324-1SE21-1BA1
3SF1324-1SF21-...
• With escape release from the front
1 NC / 1 NC
q
3SF1324-1SF21-1BA1
• With escape release from the front
2 NC / 1 NC
q
3SF1324-1SF21-1BA4
• With escape release from the back
and auxiliary release from the front
1 NC / 1 NC
q
3SF1324-1SG21-1BA1
• With escape release from the back
and auxiliary release from the front
1 NC / 1 NC
q
3SF1324-1SG21-1BA4
• With emergency release from the back
and auxiliary release from the front
1 NC / 1 NC
q
3SF1324-1SJ21-1BA1
3SF1324-1SB21-...
Solenoid locks
1 NC / 1 NC
q
3SF1324-1SB21-1BA1
2 NC / –
q
3SF1324-1SB21-1BA3
© Siemens AG 2014