Chapter 3 – Electrical Installation
ACA 6xx Sections and ACS/ACC 6x7 (132 to 3000 kW) Frequency Converters
3-33
NIOC Board Chaining
When several NIOC boards are daisy-chained for common control from
an external Modbus device the bus termination switch (SW1) must be
set on the participating boards as shown below.
Note:
This chaining is not supported by System Application Program.
Settings of
Switch SW1
Function
Termination OFF
Termination ON (default)
OFF
OFF
ON
. . .
. . .
NAMC
NIOC
on
off
NIOC
No 1
SW1
ON
NIOC
No 2
SW1
OFF
NIOC
No 3
SW1
OFF
NIOC
No 4
SW1
ON
Drive units at a common earth potential (e.g. installed in the same cabinet)
Note:
When drive units are
not
at a common earth potential, or long
distance (> 3 m) connection is required, NBCI modules can be used. Refer
to the module manual.
X28
X29
Straight-through cable (Ident.: Grey)
(pin 1 to pin 1, pin 2 to pin 2, etc.)
RS 485
Modbus
This board should have
SW1 in the OFF position if
the external Modbus device
has a bus termination
circuit. If in doubt, set SW1
to ON here.
Содержание ACA 6 Series
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Страница 8: ...Safety Instructions vi ACS 600 MultiDrive ...
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Страница 26: ...Chapter 1 Introduction 1 14 ACS 600 MultiDrive Hardware Manual ...
Страница 42: ...Chapter 2 Mechanical Installation 2 16 ACA 6xx Sections and ACS ACC 6x7 132 to 3000 kW Frequency Converters ...
Страница 100: ...Chapter 6 Preventive Maintenance 6 6 ACS 600 MultiDrive ...
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