NORD Drivesystems BU0220 User Manual
Page 22
PROFIBUS DP
– Supplementary manualfor NORD Frequency Inverter SK 2xxE
22
Subject to technical amendments
BU 0220 GB-0912
Control connection details
Terminal/
Name
Function
Data
Description / wiring suggestion
Parameter
44
24V
24V supply
(Module, field and system
bus level)
24VDC ±20%
≈ 90mA
reverse polarity protected
max. permissible current
load: 2A
Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 and
DIN2)
-
40 GND / 0V
Reference potential
for digital signals
-
C1
DIN1
Digital input 1
(I/O PROFIBUS DP DIN1)
Low 0V ... 5V
High 15V ... 30V
R
i
= 8.1k
Input capacitance 10nF
Scan rate 1 ms
Each digital input has a reaction
time of 1ms.
Inputs as per EN 61131-2 Type 1
P174
C2
DIN2
Digital input 2
(I/O PROFIBUS DP DIN2)
P174
77
Sys H
System bus
data cable +
System bus
interface
-
78
Sys L
System bus
data cable -
-
40 GND / 0V
Reference potential
for digital signals
24VDC ±20%
≈ 90mA
reverse polarity protected
max. permissible current
load: 2A
Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 and
DIN2)
-
44
24V
24V supply
(Module, field and system
bus level)
-
Potential isolation
82
PBR B
(incoming)
Bus +
(red lead)
RxD/TxD-P
RS485 transfer
The use of twisted, shielded two-
conductor cable / Type A Profibus
cable is highly recommended
-
81
PBR A
(incoming)
Bus -
(green lead)
RxD/TxD-N
-
46
GND/
0V BUS
Data ground bus
-
83
RTS
Ready to send
-
47
VO/
5V BUS
+5V bus supply
voltage
Internal Profibus voltage
supply
Note: Must not be used externally!
-
82
PBR B
(outgoing)
Bus
(red lead)
RxD/TxD-P
RS485 transfer
The use of twisted, shielded two-
conductor cable / Type A Profibus
cable is highly recommended
-
81
PBR A
(outgoing)
Bus
(green lead)
RxD/TxD-N
-
46
GND/
0V BUS
Data ground bus
-