Siemens Simatic S7-400

Assembling and Installing Systems
A-18
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
Table A-2 High-Voltage Protection of Cables Using Surge Protection Components, Fortsetzung
Conse-
cutive No.
Order Number... with the Following at Transition
0 <-> 1
Connect Cables for ...
3 Bus cable
 MPI, RS 485  up to 500 Kbps
1 KT lightning conductor
Type ARE 8 V -
DSN: 919 232
 over 500 Kbps
1 KT lightning conductor
Type AHFD 5 V -
DSN: 919 270
 RS 232 (V.24)  per core pair
1 KT lightning conductor
Type ARE 15 V -
DSN: 919 231
4 Inputs and Outputs of Digital
Modules
and Power Supply Modules
 24 VDC
1 KT lightning conductor
Type AD 24 V -
DSN: 919 253
 120 V/230 VAC 2 pcs.
Overvoltage down conductor
DEHN guard 150
900 603*
5 Inputs and Outputs of Analog
Modules
 up to 12 VDC **
1 KT lightning conductor
Typ ALE 15 V -
DSN: 919 220
 up to 24 VDC ** 1 KT lightning conductor
Type ALE 48 V -
DSN: 919 227
 up to 48 VDC ** 1 KT lightning conductor
Typ ALE 60 V -
DSN: 919 222
 up to 120 VAC ** 1 KT lightning conductor
Type ALE 110 V -/X
DSN: 919 224
* You can order these components directly from
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str. 1
D-92318 Neumarkt
** Signal voltage plus Common Mode Voltage
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