Siemens SIRIUS Series System Manual

Connecting
9.4 Connecting the compact starter (24 V) with optional AS-i mounting module
SIRIUS 3RA6 Compact Starter
78 System Manual, 02/2008, GWA 4NEB 560 0601-02 DS 02
9.4.2 Connecting limit switches
The AS-i mounting module for compact starters with two local inputs for safe shutdown
(3RA6970-3B) can have equipment such as a limit switch connected to it. Consequently,
safe shutdown up to category 2 in accordance with EN ISO 13849-1 is supported.
When the contacts open, the limit switch function immediately shuts down the compact
starter. The direct starter is shut down via Y1 - Y2. In the case of the reversing starter,
shutdown is direction-specific and takes place via Y1 - Y2 for direction of rotation 1 and via
Y3 - Y4 for direction of rotation 2.
Pin assignment of limit switch terminal
Table 9-5 Limit switch terminal
Interface Meaning Image
Y1, Y2 Connecting terminals for limit switch 1 for safe
shutdown of "direction of rotation 1"
Y3, Y4 Connecting terminals for limit switch 2 for safe
shutdown of "direction of rotation 2"
(only if mounting a reversing starter)
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Conductor cross-sections of limit switch terminal
Table 9-6 Conductor cross-sections of limit switch terminal
Limit switch terminal
(0.5 x 3.0) mm
DIN ISO 2380-A
0,5 ... 0.6 Nm
(4.5 to 5.3 lb·in)

1 x (0.5 … 2.5) mm
2
2 x (0.5 … 1) mm
2

1 x (0.5 … 2.5) mm
2
2 x (0.5 … 1) mm
2
AWG 1 x (20 to 12)
Note
If no limit switch is connected to the limit switch terminals, terminals Y1 - Y2 will need to be
jumpered on the direct starter and terminals Y1 - Y2 and Y3 - Y4 will need to be jumpered on
the reversing starter.

Siemens SIRIUS Series Specifications

General

Brand	Siemens
Model	SIRIUS Series
Category	Controller
Language	English