Siemens ISI EN 50295 - Manual (Page 106)

Siemens IK PI · 2004 6/106
AS-Interface Slaves
AS-Interface compact starters IP65 (400 V AC)
AS-Interface motor starters and IP65/67 load feeders
6
■
Design (continued)
The load itself and any other compact starters are supplied us-
ing the same connection technique. All the supply and data ca-
bles can thus be laid through the system like a bus. Whereas the
controlgear is switched via the outputs by the 24 V auxiliary
power supply, the inputs are supplied by the AS-Interface data
cable. This principle of separate auxiliary power supplies facili-
tates selective emergency stop concepts. Addressing
The addressing of the AS-Interface compact starter can still be
used even if it is fully wired, because the module is disconnected
from the AS-Interface network as soon as the addressing con-
nector is inserted.
■
Function
Display characteristics
Under normal operation, the LEDs on the compact starters indi-
cate the following device states:
LED
AUX PWR
AS-Interface
STATE 1 )
NSA0_00322
Status description
Control signal applied
No auxiliary power
Auxiliary power on
No power for slave electronics
Station address 0
AS-Interface communication absent
AS-Interface communication o.k.
On
States
Flash-
ing
On On Flash-
ing
Off
On Off
LED
RUN
READY
FAULT
NSA0_00323
OVERLOAD
States Status description
Main circuit on
– Rotary coding switch in position
Tripping REMOTE: Continued ope-
ration when programmed in the user
program
Main circuit off
– Rotary coding switch in position
Tripping LOCAL: Direct shut-off
– Rotary coding switch in position
Tripping REMOTE: Remote shut-off
when programmed in the user
program
Main circuit off
(test finished)
Main circuit off
(test running)
Main circuit on
Main circuit off, e.g. through
– Failure of two phases
– Drawn motor connector
– Supply voltage drop
(< 18 V)
– Simultaneous control of clockwise
and anti-clockwise rotation
Main circuit on with conduction
>_ 20%
n
Unit ready to operate
On
On Off On
On
Nor-
mal
flash-
ing
Fast
flash-
ing
Slow
flash-
ing
On On