Siemens ECOFAST, Manual

Page: 39 / 77

Wiring and interfaces
ECOFAST Motor Starters
3-14
GWA 4NEB 950 0562-12
3.7 AS-i interface
3.7.1 Connection techniques
The following AS-i cables are used:
• Yellow AS-i cable for AS-i communication and non-switched 24 V DC auxiliary
power for supplying sensors and electronics
• Black AUX PWR AS-i cable for switched 24 V DC auxiliary power for supplying
actuators (PELV - must be grounded !).
Schematic arrangement
The diagram below shows the position and coding of the AS-i cables on the
motor starter:
Fig. 3-9: AS-i interface
Contacting
The AS-i cables are contacted automatically using the insulation piercing
method when the AS-i cover is screwed on.
Fig. 3-10: Contacting the AS-i cables
AS-i
AUX P
WR
AS-i cable
Communication and
non-switched auxiliary power
Switched auxiliary power
Han Q8 main power infeed
Motor Starter
AS-i cover
AS-i (–)
AUX PWR (–)
AUX PWR (+)
AS-i (+)
AS-i
AUX PWR
AS-i cover