03.06
6.1 NCU terminal block 6FC5211-0AA00-0AA0
6-73
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
The PE conductor connection is also used to conduct interference currents
away from:
the shields of the DMP casing,
the DMP compact plug-in modules,
the 24 V logic power supply.
To ensure that these interference suppression measures are effective, there
must be a low-resistance connection between the shielding plate and ground
potential.
The low-resistance bonding conductor should be a fine stranded cable with a
cross-section of at least 10 mm
2
and a length of at least < 30 cm, if possible.
No more than 8 DMP compact modules can be connected per NCU terminal
block.
Module type Max.
number
Distinction
DMP compact module 16 I 2 Digital inputs
DMP compact module 16 O 2 Digital outputs 0.5 A
DMP compact module 8 O 4 Digital outputs 2.0 A
DMP compact module 1I analog 8 Analog input 13 bits
DMP compact module 1I NC ana-
log IN
4 High-speed analog input 75 ms, 12
bits
DMP compact module 1A analog 4 Analog output 14 bits
Maximum number of components in all terminal blocks of a controller:
Peripherals Number
Digital inputs 32
Digital outputs 32
Analog inputs 8
Analog outputs 8
!
Important
No more than 4 analog outputs and 4 analog inputs can be plugged in at the
same time for each NCU terminal block.
!
Caution
After the load supply voltage for the DMP compact modules has been switched
off during operation, the outputs do not reliably reestablish through-connection
when the load supply voltage is switched on again. If switch-off during
operation cannot be avoided, the DMP outputs have to be reset via the PLC
program when the load supply voltage is switched off. The outputs are set
again after the voltage has been switched on again.
EMC measures
DMP compact
modules
6 Terminal Block
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