ABB UNITROL 1020 - Page 32

Chapter 3 - Device Overview 
24 3BHS335648 E82 UNITROL 1020 User Manual
Terminal
Designation
Signal
Circuit
53 = AI1, 52 = BI1
51 = AI2, 50 = BI2
49 = AI3, 48 = BI3
47 = ARP
45 = ARN
BRP = 46
BRN = 44
Analog Inputs
AIx/BIx
Signal bandwidth 100Hz
+10 V pos Ref
-10 V neg Ref
GND Positive Reference
GND Negative Reference
R = 10kOhm (+-5V input
range)
100k
47k
AI1
-10 V DC
+
-
100k
47k
10 V DC
4.7k
4.7k
ARN
ARP
External
R
BI1
max. ±10 V
100k
47k
AI1
BI1
+
-
100k
47k
+
-
External
AGND
BRP
10k
53 = AI1, 52 = BI1
51 = AI2, 50 = BI2
49 = AI3, 48 = BI3
Analog Inputs digitally
assigned
AIx/BIx
see Chapter 3.3.7 - Analog
Inputs
100k
AI1
100k
47k
10 V DC
4.7k
ARP
BI1
+
-
47k
Ain
43 = AO1
41 = AO2
42 = BO1
40 = BO2
Analog Outputs
AOx to BOx
(AGND = BO1, BO2)
Max. output current: 10mA
AO1
BO1
+
-
max. ±10 V
72 = RS
70 = RH
74 = RL
Serial interface RS-485
RS-485_SHIELD
RS-485 +
RS-485 –
Two jumpers X1300 for
the bus terminating
resistor.
Jumpers must be placed at
both ends of the bus
RL
RH
RS
RS485_SHIELD
RS485+
RS485-
X1300
5V
+
-
+
-
77 = CG
75 = CL
73 = CS
71 = CH
See terminals
CAN Bus
CAN_GND
CAN_L
CAN_SHIELD
CAN_H
Two jumpers X1302 for
the bus terminating
resistor.
Jumpers must be placed at
both ends of the bus
CG
CL
CS
CH
CAN_GND
CAN_L
CAN_SHIELD
CAN_H
CAN_POWER
VC
X1302
+
-
+
-