Connection example: sk tu4-pbr to sk 205e, 24v dc – NORD Drivesystems BU0220 User Manual
Page 23
BU 0220 GB-0912
Subject to technical amendments
23
2.2.2.2 Control connections of the SK TU4-PBR(-...)
The double spring-loaded terminal bar of the bus connection unit is colour coded, and therefore indicates the
three different potential levels.
Terminals 1 and 2 have the same potential as the 24V terminals of the system bus level (e.g. Terminal 11).
However, electrical connection between these terminals is only implemented by mounting the bus module onto
the bus connection unit. Terminals 1 and 2 must only be used to supply sensors. Looping of a 24V supply must
not be performed via these terminals (1 and 2).
A separate power source can be used for the supply of the DOs. However, it is possible to implement the
supply of the DOs by bridging 24V 2 and 0V 2 to one of the terminals of the system bus level (24V and 0V).
However, in this case it should be noted that there is an increased risk of introducing interference into the bus
cables.
Connection of the sensors and actuators is made via the terminal bar. Alternatively, the SK TU4-PBR-M12
enables the connection of the digital I/Os via the M12 round plug connector (5 pin socket, A-coded) mounted
on the front.
Double use of the inputs via the terminal bar and the M12 round plug connector must be avoided.
Field bus level
PROFIBUS DP
System bus level and digital inputs
Digital outputs
24V
PB B
IN
PB A
IN
0V-B
RTS
24V
(as 1)
24V
(as 1)
0V
GND
0V
GND
DIN 1
0V
GND
24V
(as 1)
DIN 2
0V
GND
24V
(as 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 1)
PB B
OUT
PB A
OUT
0V-B
(as 8)
+5V B
24V
(as 1)
Sys +
Sys -
0V
GND
DIN 3
0V
GND
24V
(as 1)
DIN 4
0V
GND
24V
(as 1)
0V 2
DO 2
0V 2
Connection example: SK TU4-PBR to SK 205E
SK 205E…-Connection unit (SK TI4…)
SK TU4-
PBR…-Connection unit (SK TI4-TU-BUS)
Voltage
Source
24V DC
PROFIBUS
Subscriber
X-1
PROFIBUS
Subscriber
X+1
Terminal block of the bus Adapter Unit
SK TI4-TU-BUS and assignment of functions
Potential level: Field bus
Potential level: System bus
Potential level: DOs