ABB UNITROL 1020 - Block Diagram

 Chapter 3 - Device Overview
UNITROL 1020 User Manual 3BHS335648 E82 21
3.3.3 Block Diagram
L1
positive
negative
ML1
NW1
MC2+
PWR L1
PWR L2
PWR L3
AI1 to AI3
BI1 to BI3
PE
norm.
inv.
V1 to V4
D1 to D8
G1
AO1
BO1
RH
RL
RS
CG
CH
CL
RS-485
#
#
~
~
IE-
IE+
Ie
Main
USB 2.0
4 pol
gnd
CAN Bus
VDC
or
Remote
Access
CAN
CMT1000
or Remote
Access
CS
AGND
Analog
output
Analog
inputs
Digital
inputs
D9 to D12
Digital
IO's
+24V
V5, V6
+24V
ML2
ML3
L2
L3
NW3
MC2-
Machine
current
Machine
voltage
Network
voltage
DSP
PID
X1300
X1302
+10V
ARP
AGND
-10V
AGND
BRP
ARN
BRN
AO2
BO2
AGND
in, norm.
out, norm.
in, inv.
out, inv.
(+10 V) +Vref
AUX L1
(-10 V) -Vref
(+24 V) +Vdig
AGND
DGND
UAUX
AUX L2
AUX L3
DGND DGND
G2
ETH
CMT1000
or Remote
Access
ExCap