Wiring and interfaces
ECOFAST Motor Starters
GWA 4NEB 950 5221-12 DS 02
2-15
Deutsc
h
En
glish
2.7.2
Behavior in the event of a power failure
24 V DC voltage supply (AS-i) non-switched (yellow AS-i cable)
This voltage is constantly available. It is required for:
• supplying the electronics in the motor starter
• interrogating the auxiliary contacts
The voltage is not disconnected in the event of an emergency stop or safety
shutdown.
Behavior in the event of undervoltage
(24 V DC < 18.5 V)
and power failure:
• In the event of prolonged undervoltage or power failure > 20 ms the swit-
ching elements and the brake output are disconnected.
• When the supply is restored, the disconnection command and the associated
signal bits and error bits are acknowledged automatically.
24 V DC voltage supply (AUX PWR) switched (black AS-i cable)
This voltage is not constantly available. It is only required for:
• driving the switching elements, e.g. a contactor
The voltage can be disconnected in the event of an emergency stop or
safety shutdown (category 1 according to EN 954-1), so that all switching
elements are safely disconnected with the connected motors.
Behavior in the event of undervoltage
(24 V DC < 18.5 V)
and power failure:
• In the event of prolonged undervoltage or power failure > 20 ms the swit-
ching elements and the brake output are disconnected.
• When the supply is restored, the disconnection command and the associated
signal bits and error bits are acknowledged automatically.
Summary of Contents for ecofast 3RK1702-2GB18-0AA1
Page 1: ...Motor Starter Handbuch Manual 04 2009 ecofast Totally Integrated Automation ...
Page 2: ......
Page 12: ...ECOFAST Motorstarter viii GWA 4NEB 950 5221 12 DS 02 ...
Page 40: ...Montage von Motorstartern ECOFAST Motorstarter 3 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 58: ...Gerätefunktionen ECOFAST Motorstarter 6 6 GWA 4NEB 950 5221 12 DS 02 ...
Page 70: ...Bestellnummern ECOFAST Motorstarter C 4 GWA 4NEB 950 5221 12 DS 02 ...
Page 74: ...Korrekturblatt ECOFAST Motorstarter GWA 4NEB 950 5221 12 DS 01 ...
Page 84: ...ECOFAST Motor Starters viii GWA 4NEB 950 5221 12 DS 02 ...
Page 112: ...Installation of Motor Starters ECOFAST Motor Starters 3 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 130: ...Device functions ECOFAST Motor Starters 6 6 GWA 4NEB 950 5221 12 DS 02 ...
Page 138: ...Technical data ECOFAST Motor Starters A 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 146: ...ECOFAST Motor Starters GWA 4NEB 950 5221 12 DS 02 ...
Page 149: ......