Siemens Simatic ET200pro, Руководство по эксплуатации

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Connection
4.4 Technical specifications of the lines
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08
77
Equipment fusing
Replaceable fuses for protecting the ET 200pro:
● Interface module:
The bus module of the interface module is equipped with fuses for the electronic/encoder
supply 1L+ and load voltage supply 2L+ (glass tube fuse; 5x20; type 194; 12.5 A; fast-
blow), and a replacement fuse.
● Power module:
The rear panel of the power module is equipped with a fuse for the load voltage supply
2L+ (glass tube fuse; 5x20; type 194; 12.5 A; fast-blow), and a replacement fuse.
Note
The CM IM PN PP FO connection module may only be pulled/plugged at zero voltage.
If you pull or plug the CM IM PN PP FO connection module under voltage, the module will
not reach ready-to-operate status. In this case, briefly switch the voltage supply off and
back on.
See also
IM 154-1 DP interface module (Page 287)
IM 154-2 DP High Feature interface module (Page 294)
PM-E power module (Page 319)
4.4 Technical specifications of the lines
Influence of cable length on the supply voltage
Always make allowances for the influence of cable lengths on the supply voltage of
ET 200pro.
Example
On a cable with Ø 1.5 mm
2
and a length of 10 m, the voltage drop is 2.5 V at a load of 10 A.
This corresponds with 0.25 V at a load of 1 A.
CAUTION
Always adapt the conductor cross-sections to the max. supply currents, for you would
otherwise risk damage to the device as a result of excess heat on the cable insulation and
on contacts.