ABB UNITROL 1020 - Page 31

 Chapter 3 - Device Overview
UNITROL 1020 User Manual 3BHS335648 E82 23
4 = NW1
3 = NW3
phase U
NET
Network L1
Network L3
*PT & CTs must be grounded
NW1
NW3
External
max. 500 V / 0.2 VA
*
10 = IE +
9 = IE -
Excitation Current Output Ie
- Exciter Current +
- Exciter Current -
20 A =
IE+
IE-
E
0 to 300 V=
External
17 = PE
Protection Earth
Terminal
Designation
Signal
Circuit
37 = D1
36 = D2
35 = D3
34 = D4
31 = D5
30 = D6
29 = D7
28 = D8
39 = V1
38 = V2
33 = V3
32 = V4
20 = G2
21 = G1
Digital input / output
Digital Input / Output 1
Digital Input / Output 2
Digital Input / Output 3
Digital Input / Output 4
Digital Input / Output 5
Digital Input / Output 6
Digital Input / Output 7
Digital Input / Output 8
Caution:
Configured as outputs, DIO1 …
DIO8 must not be connected
directly with 24 V Power (causes
short circuit via internal transistor)
24V Power
24V Power
24V Power
24V Power
GND
GND
V2
D1
max. 150 mA
V1
24V
External
V2
D1
V1
24V
External
ADC
2k
20 ... 28 V
20 ... 28 V
G1
G1
25 = D9
24 = D10
23 = D11
22 = D12
27 = V5
26 = V6
20 = G2
Digital input only
Digital Input 9
Digital Input 10
Digital Input 11
Digital Input 12
24V Power
24V Power
GND
Note: The internal 24 V supply (V1 to V6) can be loaded with a maximum of 600 mA by
all used digital inputs and outputs.