ABB UNITROL 1020 - Hardware; Connection Diagram

 Chapter 3 - Device Overview
UNITROL 1020 User Manual 3BHS335648 E82 13
3.3 Hardware
170 mm
302 mm
280.25 mm
147.5 mm
Casing
The device’s base is an aluminum back plane.
Cooling is done by the main heat sink on top of
the device. The unit itself is covered with plastic
and provides an IP20 protection.
Power electronics
The power part is fitted with an IGBT semi-
conductor. The average value of the output
voltage is always positive. The output is current-
limited and thus short-circuit-proof.
Control elements
The display panel and connectors for the USB
and Ethernet interface are located on the unit
cover.
Installation
The site of installation must be dry and free of
dust.
3.3.1 Connection Diagram
PWM
-
+
Measurement
and control
inputs
=
AVR
Supply
power electronics
PWR L3
Digital I/Os
Analog I/Os
U
NET
U
M
I
M2
I
e
UNITROL 1020
E
E
ETH
RS-485
CAN
SM
~
PWR L2
PWR L1
AUX L1
AUX L2
AUX L3
ExCap(-)
USB
I
e