User manual

56 • vacon vacon 20 api
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6
6.2 Control I / O
Terminal Signal Factory preset Description
1 +10 Vref Ref. voltage out
Maximum load 10 mA
2 AI1 Analog signal in 1
Freq. reference
P)
0 - 10 V, Ri = 250 kΩ
3GND
I / O signal ground
6 24 Vout 24 V output for DI's
±20%, max. load 50 mA
7DI_C
Digital Input 
Common
Digital Input Common for DI1-
DI6, refer to Table 6.3 for DI
sink type
8 DI1 Digital input 1
Start forward
P)
Positive,
Logic1: 18…30V,
Logic0: 0…5V;
Negative,
Logic1: 0…10V,
Logic0: 18…30V;
Ri = 10KΩ (floating)
9 DI2 Digital input 2
Start reverse
P)
10 DI3 Digital input 3
Fault reset
P)
A A RS485 signal A FB Communication
Negative
B B RS485 signal B FB Communication
Positive
4 AI2 Analog signal in 2
PID actual value and
Freq. reference
P)
Default:
0(4) - 20 mA, Ri ≤ 250 Ω
Other:
0 - + 10 V, Ri = 250 kΩ
Selectable through microswitch
5GND
I / O signal ground
13 DO-
Digital Output
Common
Digital Output Common
14 DI4 Digital input 4
Preset speed B0
P)
As DI1
15 DI5 Digital input 5
Preset speed B1
P)
As DI1,
Other: Encoder Input A (fre-
quency up to 10 kHz)
Selectable through microswitch
16 DI6 Digital input 6
External Fault
P)
As DI1,
Other: Encoder Input B (fre-
quency up to 10 kHz), Pulse
Train Input (frequency up to 5
kHz)
18 AO Analog Output
Output frequency
P)
0 - 10 V, RL ≥ 1 KΩ
0(4) - 20 mA, RL ≤ 500Ω
Selectable through microswitch
20 DO Digital signal out
Active = READY
P)
Open collector, max. load 35 V /
50 mA
Table 6.2: Vacon 20 General purpose application default I / O configuration
and connections for control board

P) = Programmable function, see parameter lists and descriptions, chapters
8 and 9.
mA
1-10 k
