NORD Drivesystems BU0290 User Manual
Page 16
PROFINET bus module for NORD frequency inverters SK 200E
16
Subject to technical amendments
BU 0290 GB-4312
NOTE
The cable shielding must be connected to the functional earthing
1
(usually the
electrically conducting mounting plate) in order to prevent EMC interference in the
device.
In order to achieve this, for PROFINET connections it is mandatory that the metallic metric
EMC screws are used for the connection of the PROFINET shielding lead to the frequency
inverter or the housing of the technology unit. This ensures a wide area connection of the
functional earthing.
The double spring terminal bar is divided into 2 potential levels (system bus and digital outputs).
A separate power source should be used for the supply of the DOs. However, by bridging 24V 2 and 0V 2 to
one of the terminals of the system bus level (24V and 0V) it is possible to implement the supply of the DOs.
However, in this case it should be noted that there is an increased risk of introducing interference into the bus
cables.
Connection of up to 8 sensors and 2 actuators is made via the terminal bar.
Digital inputs
System bus level and digital inputs
Digital outputs
24V
DIN 5
DIN 6
0V
24V
(as
for 1)
24V
(as
for 1)
24V
(as
for 1)
0V
0V
DIN 1
0V
24V
(as
for 1)
DIN 2
0V
24V
(as
for 1)
24V 2
DO 1
0V 2
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
24V
(as
for 1)
DIN 7
DIN 8
0V
24V
(as
for 1)
24V
(as
for 1)
Sys +
Sys -
0V
DIN 3
0V
24V
(as
for 1)
DIN 4
0V
24V
(as
for 1)
24V 2
DO 2
0V 2
Connection example: SK TU4-PNT to SK 200E
SK 205E... - bus connection unit (SK TI4)
SK TU4-ECT... - bus connection unit (SK TI4-TU-BUS)
Voltage
source
24V DC
NOTE
Looping of the 24V supply or GND is possible, however the maximum current load of 3A
must not be exceeded with the module.
Only adjacent terminals (e.g.: 11/12) may be used for looping.
Terminals 1/2 are preferentially for use with sensors and with maximum loads of 500mA.
1
In systems, electrical equipment is usually connected to a functional earth. This serves as a means to dissipate leakage and
interference currents in order to ensure EMC characteristics and must therefore be implemented according to high frequency technology
aspects.
Illustration of the terminal bar of the bus connection unit
SK TI4-TU-BUS with allocation of functions
Potential level: system bus
Potential level: system bus
Potential level: DOs