12.95
7-98
E Siemens AG, 2002. All rights reserved
SINUMERIK 810D Manual Hardware Configuration (PHC) -- 11.02 Edition
SIMODRIVE
810D PS
MS
(I/RF or UPS)
SIEMENS
611 closed-loop
control unit
Max. of two NCU terminal
blocks connectable
Terminator
Drive bus max.
length 10m
Note
If there are EMC problems, attach the shield of the
drive bus cable on the drive module (at the top).
Fig. 7-2 Connection of the NCU terminal block
The terminator for the drive bus must be inserted in slot X21 on the last NCU
terminal block.
In the case of common protection and interference voltage, the protective
conductor regulations according to VDE 0100 and VDE 160 must always be
complied with.
See protective conductor connection in Fig. 7-1.
The protective--conductor terminal is also used to discharge interference
currents from:
S the shields of the DMP module holder,
S the DMP compact plug-on module,
S the 24V logic power supply.
To ensure that these interference suppression measures are effective, make
sure there is a low-resistance connection between shield plate and earth
potential.
The low-resistance connecting conductor should be a fine-core conductor with a
cross-section of at least 10 mm
2
and a length of less than 30 cm, if possible.
A maximum of eight DMP compact modules can be connected for each NCU
terminal block.
Terminator
Protective
conductor
EMC measures
DMP compact
modules
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