Rockwell Automation Publication 1606-RM008A-EN-P - November 2021 25
DC-UPS - 24V, 20 A, 480 W Reference Manual
Protection Features
Safety Features
Attributes Values Notes
Output protection
In power supply mode: The DC-UPS is protected by the current limitation of
the supplying power supply or a circuit protector on the input in case the
power supply has an ampacity greater than 28 A. In battery mode: The DC-
UPS is electronically protected against overload, no-load, and short-circuits
Output overvoltage protection
Typ 32V DC In case of an internal DC-UPS
anomaly, a redundant circuit limits
the maximum output voltage in
battery mode. The output shuts down
and automatically attempts to
restart.
Max 35V DC
Degree of protection IP 20
EN/IEC 60529 For use in a controlled
environment according to CSA 22.2
No 107.1-01.
Penetration protection > 3.5 mm (0.14 in) For example, screws, small parts
Over-temperature protection included for battery mode
Output shuts down with automatic
restart. Additional temperature
protection for charging of batteries
can be found in Batteries and Battery
Charging on page 13.
Input overvoltage protection Max 35V DC No harm or anomaly of the unit
Internal input fuse no
Reverse input polarity protection included Max -40V
Reverse battery polarity protection included Max -35V DC
Protection against wrong battery
voltage
included Max +35V DC
Battery deep discharge protection included
Buffering stops when deep discharge
protection is active. Battery will be
disconnected from the DC-UPS.
Attributes Values Notes
Input/output separation Not provided
The minus-pole is internally hard-wired
with the minus-pole of the input and
battery terminals.
Output voltage
SELV
IEC/EN 60950-1, The input must be
powered from a SELV power source.
PELV
IEC/EN 60204-1, EN 50178, IEC 62103, IEC
60364-4-41, The input must be powered
from a PELV power source.
Class of protection III
PE (Protective Earth) connection not
required
Isolation resistance
(1)
(1) Center-tap terminal is categorized in the group of “power port”.
> 10MOhm Power port to signal port
> 10MOhm Power port to housing
> 10MOhm Signal port to housing
Touch current (leakage
current)
The leakage current that is produced by the DC-UPS itself depends on the input
voltage ripple and must be investigated in the final application. For a smooth DC
input voltage, the produced leakage current is less than 100 µA.
To Next Page
Loading...
Need help?
General
