24
EN
Installation and connection
I/O extension module 901-20
Device
1385
can be extended with E/A Extension Module 901-20 to include
further switching operations.
Fig. 11 : Circuit diagram
ON
8
7
6
5
4
3
2
1
2
0
2
1
2
2
2
3
2
4
2
5
2
6
64
32
16
8
4
2
1
DIP switch 8 must be set to ON for
address setting in networked operation.
Voltage supply
E1-E8 = Inputs / Signal = Low Active (0V)
A1-A4 = outputs – open collector / switching ground (0V)
(Observe voltage drop!)
K1
= Potential-free relay output
Max. load capacity 24V / 2A (ohmic load)
K2
= Potential free relay output
Load capacity: max. 24V / 2A (resistive load)
Only one power supply may be
connected
A
A
12 V DC ±10%, residual ripple 50%
Only on terminals 1 and 2: 24 V DC ±10%, regulated
OFF
12 V battery or 12 V DC, regulated
1 2
3 4
5
6
7
8
9
10
11 12
13 14
15 16 17
18 19 20 21
22 23 24
25 26
27 28
1 2 3 4 5 6 7
8
ON
OFF
F1
0.5AT
F2
0.5AT
K2
Relay contact
Load capability:
max. 24 V / 2A
Coding switch for setting
the bus address of the device
K1
D
LED
green
LED
yellow
E1 E2
E3
E4
E5 E6 E7 E8
A1 A2 A3
A4
Potential-free
Relay contact
Load capability:
max. 24 V / 2A