Specifications

AS-Interface
ASIsafe
3SF1 position switches with solenoid interlocking
Plastic enclosures
6/26
Siemens IK PI · 2012
6
■ 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
• Locking force 1,300 N (1,000 N according to GS-ET 19)
• Status display with 4 LEDs 24 V DC;
1: AS-i, 2: FAULT, 3: F–IN1, 4: F–IN2
Safety level
The new 3SF1 324-1S.21-1BA4 safety position switches are also
suitable for several interlocks for protective doors – for secure di-
agnosis and fast ability to reclose the system.
They feature:
• feedback from the solenoid and
• the doors do not
need to be opened after the magnet is re-
leased.
With AS-i safety monitor or in DP/AS-i F-Link it is possible to
achieve SIL 2 according to IEC 61508 or PL d according to
ISO 13849-1.
Comparison of versions
■ Selection and ordering data
q Positive opening according to IEC 60947-5-1, Appendix K.
1)
Supplied without actuator. Please order separately.
Note:
For actuator and optional accessories, see page 6/24.
Version Contacts Attainable
safety level
Diagnostics Reclose condition
after the release of the magnet
Actuator / magnet Magnet feedback (depends on the type of evaluation)
3SF1 324-1S.21-1BA1 1 NC/1 NC SIL 1 / PL c 4 Door must not be opened
1 NC/1 NC SIL 2 / PL d 4 Door must be opened
3SF1 324-1S.21-1BA3 2 NC SIL 2 / PL d -- Door must not be opened
3SF1 324-1S.21-1BA4 2 NC/1 NC SIL 2 / PL d 4 Door must not be opened
Interlock
1)
Contacts Order No.
Actuator / magnet
1,300 N locking force · Enclosure width 54 mm
3SF1 324-1SD21-...
Spring-actuated locks
• With auxiliary release 1 NC/1 NC
q
3SF1 324-1SD21-1BA1
• With auxiliary release 2 NC / –
q
3SF1 324-1SD21-1BA3
• With auxiliary release 2 NC/1 NC
q
3SF1 324-1SD21-1BA4
• With auxiliary release with lock 1 NC/1 NC
q
3SF1 324-1SE21-1BA1
3SF1 324-1SF21-...
• With escape release from the front 1 NC/1 NC
q
3SF1 324-1SF21-1BA1
• With escape release from the front 2 NC/1 NC
q
3SF1 324-1SF21-1BA4
• With escape release from the back
and auxiliary release from the front
1 NC/1 NC
q
3SF1 324-1SG21-1BA1
• With escape release from the back
and auxiliary release from the front
1 NC/1 NC
q
3SF1 324-1SG21-1BA4
• With emergency release from the back
and auxiliary release from the front
1 NC/1 NC
q
3SF1 324-1SJ21-1BA1
3SF1 324-1SB21-...
Magnetic field lock 1 NC/1 NC
q
3SF1 324-1SB21-1BA1
2 NC / –
q
3SF1 324-1SB21-1BA3
IKPI_Kap06_04B_Zel.fm Seite 26 Mittwoch, 7. September 2011 11:26 11
© Siemens AG 2011