NORD Drivesystems BU0220 - Manual (Page 25)

2 Assembly and installation
BU 0220 GB-0912 Subject to technical amendments 25
Control connection details
Terminal/
Name
Function Data Description / wiring suggestion Parameter
1 24V
2
24V supply
(Module, field and system
bus level)
24VDC ±20%
≈ 90 mA
reverse polarity protected
Max. permissible current
load: 500mA
Connection of the sensor supply
voltage
via DC/DC converter to Terminal
11.
-
Potential isolation
3 PB B
(incoming)
4
(outgoing)
PBR B
Bus + (red lead)
RxD/TxD-N
RS485 transfer
The use of twisted, shielded two-
conductor cable / Type A Profibus
cable is highly recommended
-
5 PB A
(incoming)
6
(outgoing)
PBR A
Bus - (green lead)
RxD/TxD-P
-
7 0V-B
8
Data ground bus
Reference potential for
internal Profibus voltage
supply
-
9 RTS Ready to send
-
10 5V B 5V bus supply
voltage
Internal Profibus voltage
supply
Note: Must not be used externally! -
Potential isolation
11 24V
12
13
24V supply
(Module, field and system
bus level)
As for terminal 1
However, max.
permissible current load:
3A
Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 to DIN4)
-
15 0V
17
18
GND
Reference potential
for digital signals
-
14 Sys + System bus
data cable +
System bus
interface
-
16 Sys - System bus
data cable -
-
19 DIN1 Digital input 1
(I/O Profibus DIN1)
Low 0V ... 5V
High 15V ... 30V
R
i
= 8.1k

Input capacitance 10nF
Scan rate 1 ms
Inputs as per EN 61131-2
Type 1
Each digital input has a reaction
time of 1ms.
P174
20 DIN3 Digital input 3
(I/O Profibus DIN3) P174