Configuration Options
2-14
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Table 2-2
Restrictions imposed on the maximum configuration by the power input
Configuration
options
Restrictions
Calculation/overcoming the
restrictions
Supply voltage and
PROFIBUS-DP fed
and looped
through via a
common cable
Supply voltage and
PROFIBUS-DP fed
via separate
cables and looped
through via a
common cable
Power input of the whole configuration:
Up to 40
C
6 A
Up to 55
C
4 A
Maximum cable length:
25 m if the power input of the whole
configuration is as follows:
Up to 40
C
6 A
Up to 55
C
4 A
120 m if the power input of the whole
configuration is as follows:
Up to 40
C
1 A
Up to 55
C
0.8 A
1. Calculate the power input of each
module (see the technical
specifications as of Section 7.1).
2. Add up the power input of all the
modules in the whole configuration.
3. If the current input > 6 A (4 A), then
feed the supply voltage to a few
ET 200Xs from the power system
again (permissible power input
per ET 200X
1 A or
0.8 A as a
function of temperature).
Supply voltage and
PROFIBUS-DP fed
and looped
through via
separate cables
Power input of one ET 200X:
Up to 40
C
1 A
Up to 55
C
0.8 A
1. Calculate the power input of each
module (see the technical
specifications as of Section 7.1).
2. Add up the power input of the
modules of each ET 200X.
3. If the power input > 1 A (0.8 A),
reduce the number of expansion
modules per ET 200X.
The maximum cable length for the supply
voltage is dependent on the cable core
cross-section and on the power input of the
whole configuration:
Cable core cross-section 0.75 mm
2
and
power input 1 A (0.8 A): cable length 120 m
Cable core cross-section 0.75 mm
2
and
power input 6 A (4 A): cable length 12 m
Cable core cross-section 1.5 mm
2
and
power input 1 A (0.8 A): cable length 240 m
Cable core cross-section 1.5 mm
2
and
power input 6 A (4 A): cable length 24 m
The length of the bus cable is dependent on the
transmission rate of the PROFIBUS-DP
network (see the manual for the DP master)
To calculate the cable length:
1. Add up the power input of all the
modules in the whole configuration.
2. Increase the cable length, if
necessary, by feeding the supply
voltage for a few ET 200Xs from
the power system again.
Summary of Contents for SIMATIC ET 200X
Page 8: ...Preface viii ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 20: ...Contents xx ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 40: ...Product Overview 1 20 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 58: ...Configuration Options 2 18 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 80: ...Installation 3 22 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 124: ...Configuration Options 2 18 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 328: ...Order Numbers A 10 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 348: ...Dimesioned Drawings and Pinouts C 18 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...
Page 362: ...Index Index 8 ET 200X Distributed I O Device EWA 4NEB 780601602 06 ...