cabling and connections
vacon 57
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
6
Dotted line indicates the connection with
inverted signal levels
24 V
GND
24 V
GND
U<+48V
I<50mA
+
0(4)/20mA
RL<500
Basic I/O board
NXOPTA1
+10Vref
AIA1+
GND
AIA2+
AIA2-
24Vout
GND
DIA1
DIA2
DIA3
CMA
24Vout
GND
DIB4
DIB5
DIB6
CMB
Iout+
Iout-
DO1
Reference
(voltage)
Reference
(current)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PE/GND
-G1
Ext +24VDC
Power Supply
-F1
#6 #7
#6 #7
#6 #7
#6 #7
#6 #7
#6 #7
-F2
1A
gG/
Class CC
-Q1
3A
-Q2
3A
-Q3
3A
-Q4
3A
-Q5
3A
-Q6
3A
-F3
1A
gG/
Class CC
-F4
1A
gG/
Class CC
-F5
1A
gG/
Class CC
-F6
1A
gG/
Class CC
-F7
1A
gG/
Class CC
Figure 6-15. Parallel connection of 24 V inputs with many AC drives
NOTE! The control unit I/O ground is not isolated from the chassis ground / protective earth. In the
installation, take into account the potential differences between the grounding points. We
recommend that you use galvanic isolation in the I/O and 24V circuitry.
NOTE! Analogue outputs and inputs do not work with only +24V supplied to the control unit.
If there is a +24V/EXT+24V output on the board, it is locally short-circuit protected. If one of the +24V/
EXT+24V outputs short-circuits, the others remain powered because of the local protection.
6.2.2
Control connections
The basic control connections for boards A1 and A2/A3 are shown in Chapter 0.
The inverters are equipped with A1 and A2 boards as standard.
The signal descriptions for the standard application are presented in Chapter 2 of the All in One
Application Manual. You can find the signal descriptions for other applications in the VACON
®
NX
Application Manual.
Figure 6-16. The I/O terminals
of the two basic boards
OPT-A2 OPT-A3
Board OPT-A1
in slot A
Boards OPT-A2 and
OPT-A3 in slot B