NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
122
BU 0200 en-US-4920
Pos : 269. 10 / Anl eit ungen/ Elektronik/FU und St arter/ 4. I nbetriebnahm e/AS-I nt erface [all e Ger ät e]/ Busauf bau und Topologie_01 [SK 1xx E, SK 2xxE, SK x xxE-FD S] @ 41\mod_1583920379238_14638. doc x @ 2596674 @ 3 @ 1
4.5.3 Bus structure and topology
The AS interface network must be set up in any form (line, star, ring and tree structure) and is
managed by an AS-interface master as the interface between the PLC and slaves. Additional slaves
can be added to an existing network at any time, up to a limit of 31 standard slaves or 62 slaves in
extended addressing mode. The slaves are addressed by the master or an appropriate addressing
device.
An AS-i master communicates independently and exchanges data with the connected AS-i slaves.
Normal power supply units may not be used in the AS interface network. Only a special AS-interface
power unit may be used for the power supply for each AS- interface connector. This AS-interface
power supply is connected directly to the yellow standard cable (AS-i(+) and AS-i(-) cable) and should
be positioned as close as possible to the AS-i master in order to keep the voltage drop small.
In order to avoid problems, the
PE connection of the AS-interface power supply
(if present)
must
be
grounded
.
The brown
AS-i(+)
and the blue
AS-i(-)
wire of the yellow AS interface cable
must not be grounded
.
Pos : 269. 11 / Anl eit ungen/ Elektronik/FU und St arter/ 4. I nbetriebnahm e/AS-I nt erface [all e Ger ät e]/ Busauf bau und Topologie_02 [SK 1x 5E, SK 2xx E, SK xxx E-FDS] @ 9\mod_1443526149397_14638. docx @ 247496 @ @ 1
Pos : 269. 12 / Anl eit ungen/ Elektronik/FU und St arter/ 4. I nbetriebnahm e/AS-I nt erface [all e Ger ät e]/ Busauf bau und Topologie_03 [SK 2xx E] @ 9\m od_1444311533459_14638. docx @ 249021 @ @ 1
1)
SK 22xE/SK 23xE
2)
SK 225E-…/SK 235E-…-AUX and -AXB
24 V DC auxiliary energy at terminals 44/40
Pos : 269. 13 / Allgemei n/ Allgemei ngültige M odul e/---------Seitenum bruch kom pakt --------- @ 13\m od_1476369695906_0.docx @ 2265496 @ @ 1
AS interface
master
AS interface
power supply unit
Sensors
Actuators
Sensors
Controller/
automation unit
observe max.
power load
24 V power supply
unit for auxiliary
energy
AS interface
slave
1)
AS interface
slave
2)
AS-i
AS-
AUX
AS interface
yellow line
Actuators
24 V auxiliary supply
black line
