Danfoss VACON NX, Application Manual

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8.2 Control I/O in Pump and Fan Control Application
1
6
2
3
4
5
18
19
20
12
7
13
8
9
10
14
15
16
21
22
23
11
17
24
25
26
Fault
+
-
AO1-(GND)
DO1
+24 V
GND
GND
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
RO1
RO1
RO1
CMA
CMB
RO2
RO2
RO2
OPTA1
OPTA2 / OPTA3
Terminal Signal Description
+10V
ref
AI1+
AI1-
AI2+
AI2-
+24V
Reference output
I/O Ground
Analogue input 2
Current range 0—20 mA
Programmable (P2.2.1.9)
Control voltage output
I/O ground
Place A: Start/Stop
Programmable (G2.2.6)
Interlock 1
Programmable (G2.2.6)
Interlock 2
Programmable (G2.2.6)
Place B: Start/Stop
Programmable (G2.2.6)
Jogging speed selection
Programmable (G2.2.6)
Control place A/B selection
Programmable (G2.2.6)
Common for DIN 1—DIN 3
Common for DIN4—DIN6
Control voltage output
I/O ground
Analogue output 1
Output frequency
Programmable (P2.3.3.2)
Digital output
READY
Programmable (G2.3.1)
Open collector,
I≤50 mA, U≤48 VDC
Relay output 1
Aux/Autochange 1
Programmable
(G2.3.1)
Relay output 2
Aux/Autochange 2
Programmable
(G2.3.1)
Range 0—20 mA/R
L
,
max. 500 Ω
AO1+
Analogue input 1 PID reference
from I/O
Default reference from keypad P3.4
Ground for reference and
controls
Analogue input 2 PID
actual value 1
Start signal for control place A
PID Controller.
Contact closed = Interlock used
Contact open = Interlock not used
Contact closed = Interlock used
Contact open = Interlock not used
Contact open = Control place A is
active Contact closed = Control
place B is active
Contact closed = Jogging speed
active
Contact closed = Start
Voltage for potentiometer, etc.
Analogue input 1
Voltage range 0—10V DC
Voltage for switches,
etc. max 0.1 A
Voltage for switches (see #6)
Ground for reference and controls
Connect to GND or +24 V
Connect to GND or +24 V
Ground for reference and controls
2 wire
Transmitter
Reference potentiometer,
1-10kΩ
Actual
value
(0) 4-20
mA
e3
0b
h0
98
.2
0
Illustration 20: Default I/O Configuration in Pump and Fan Control Application
For terminals 18–19, see Table 100 and Table 102 .
For terminals 21–26, see Table 98 .
The option board OPTA3 has no terminal for open contact on its second relay output (terminal 24 is missing).
See jumper selections in
Illustration 21 . More information in the User Manual of the product.
AB296635287482en-000301 / DPD00903 | 129 Danfoss A/S © 2023.02
Pump and Fan Control Application
VACON® NX All-in-One
Application Guide