Technical data
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7
7.3.1
Technical information on control connections
Table 24. Technical information on standard I/O terminals.
Standard I/O
Terminal
Signal
Technical information
A
RS485
Differential receiver/transmitter
Set bus termination with dip switches (see Chapter 5)
B
RS485
1
Reference output
+10V, ±5%; Maximum current 10 mA
2
Analogue input,
voltage or current
Analogue input channel 1
0- +10V (Ri = 200 k
)
0/4-20 mA (Ri =250
)
Resolution 0.05 %, accuracy ±1 %
Selection V/mA with dip-switches (see Chapter 5).
Default 0- +10V
3
I/O ground
Ground for reference and controls (connected internally to
frame earth through 2M
)
6
24V aux. voltage
+24V, ±10%, max volt. ripple < 100mVrms; max. 100 mA
Short-circuit protected
Can be used with an external power supply (with a current
limiter or fuse protected) to supply the control unit and
fieldbus for backup purposes.
Dimensioning: max. 1000mA/control unit.
7
DIN COM
Common for digital inputs. Connected to GND with dip-
switch SW1. See Chapter 5
8
Digital input 1
Positive or negative logic
Ri = min. 4k
15…30V = "1"
0...5V = “0”
9
Digital input 2
10
Digital input 3
4
Analogue input,
voltage or current
Analogue input channel 2
0- +10V (Ri = 200 k
)
0/4-20 mA (Ri =250
)
Resolution 0.05 %, accuracy ±1 %
Selection V/mA with dip-switches (see Chapter 5).
Default 0/4-20 mA
5
I/O ground
Ground for reference and controls (connected internally to
frame earth through 2M
)
13
Digital output com-
mon
Common for digital output 1 (DO1-)
14
Digital input 4
Positive or negative logic
Ri = min. 4k
15…30V = "1"
0...5V = “0”
15
Digital input 5
16
Digital input 6
18
Analogue signal
(+output)
Analogue output channel 1,
0-10V (30mA max)
Resolution 0.1 %, accuracy ±2,5 %
Short-circuited protected.
20
Digital Output 1
Open Collector max 35V / 50mA (DO1+)
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