Basic Units With Remote Extensions Option - ABB 07CR41 Operating Manual

1.2.2

Basic units with remote extensions option

C S 31 bu s
0 7 K R 5 1 X I1 6 E 1
Figure 2: Basic unit with extension units on the local interface for input/output units and on the CS31 system bus
Advant Controller AC 31 / Issued: 01.99
With the 50 and 90 series, it is possible to increase the number of inputs/outputs of the basic
basic unit by adding remote units. The basic unit controlling the system is called the MASTER
basic unit. The maximum bus length is 500 m without an amplifier and 2000 m with 3 amplifi-
ers (1 NCB or NCBR unit enables bus amplification for 500 m).
A m a x im u m o f 3 1 b u s c o n n e c tio n p o ints
A m a x im u m o f 5 00 m w ith o u t am p lifie rs
A m a x im u m o f 2 00 0 m w ith am p lifie rs
X O 0 8 R 1 IC M K 1 4 F 1 X C 08 L 1
A m a x im u m o f 6 e x te n s io n s
The master basic unit can manage up to 31 connection points, so-called SLAVES, such as:
- 50 series remote units with central extension capabilities: a maximum of 6 extension units
comprising a maximum of 8 analog input channels and 8 analog output channels
- 30 and 90 series remote units (without central extension capacities) with analog/digital in-
puts/outputs
- High-speed counter units
- ABB frequency converter
- Air pressure actuators
- 50 series basic units
- 90 series basic units as slaves with their own user programs
- or any other devices which support CS31 communication (see Figure 2).
Comment:
A slave fitted solely with digital channels occupies 1 connection point.
A slave fitted with digital and analog channels occupies 2 connection points of the available
31.
The maximum number of remote analog units depends on the MASTER basic unit:
- 50 series: - a maximum of 31 remote analog input units
or - a maximum of 31 remote analog output units
or - a maximum of 15 slaves (ICMK14F1) with analog input/output extensions
+ 1 remote analog input/output unit (15 x 2 + 1 = 31)
or - a mixed digital/analog configuration within the previous limits
- 90 series: - a maximum of 12 remote analog input units
or - a maximum of 12 remote analog output units
or - a maximum of 12 slaves with analog extensions
or - a mixed digital/analog configuration within the permissible limits
X M 0 6 B 5
1 – 3 Introduction
A C S 6 0 0 F es to
F re q u e n c y a ir p res s u re
c o n ve rte r a c tu a to rs
N C S A-0 1
in te rfa c e
3