Siemens SIRIUS ACT 3SU1 - Page 172

3SU14 modules
8.1 Overview
SIRIUS ACT 3SU1 pushbuttons and signaling devices
172 System Manual, 08/2018, A5E03457306020A/RS-AK/010
Operating principle of 3SU1400-1AA10-.HA0 contact modules with installation monitoring
The 3SU1400-1AA10-.HA0 contact module monitors proper installation or correct connection
to an EMERGENCY STOP actuator. If the contact module is incorrectly installed or is
disconnected from the actuator, the contact module initiates an automatic shutdown of the
machine or system. As long as operation continues, it is assured that all necessary contacts
are functioning properly.
When used with a SIRIUS 3SU1 EMERGENCY STOP device, the contact module can be
mounted in any position on the 3-slot holder.
When used with any other SIRIUS 3SU1 device, the contact module can only be mounted:
● At positions 1 and 2 on the 3-slot holder, or
● At positions 1 and 3 on the 4-slot holder.
Machinery Directive
In addition to increased safety, the 3SU1400-1AA10-.HA0 contact module also supports
compliance with the Machinery Directive.
First commissioning
The action of snapping the contact module onto the holder closes the circuits so that the
contact module is ready to operate.
During operation
The installation status of the contact module is continuously monitored. If an error occurs,
the machine is shut down automatically.