Rockwell Automation 1606-XL240-UPSE Power Supply Reference Manual - Manual (Page 10)

All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
10 Rockwell Automation Publication 1606-RM013A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
12. Check Wiring and Battery Quality Tests
The DC-UPS is equipped with an automatic “Check Wiring” and “Battery Quality” test.
“Check Wiring” test:
Under normal circumstances, an incorrect or bad connection from the battery to the DC-UPS or a missing (or blown)
battery fuse would not be recognized by the UPS when operating in normal mode. Only when backup is required
would the unit be unable to buffer. Therefore, a “Check Wiring” test is included in the DC-UPS. This connection is
tested every 10 seconds by loading the battery and analyzing the response from the battery. If the resistance is too
high, or the battery voltage is not in range, the unit displays “Check Wiring” along with the red LED. At the same time,
the green “Ready” LED will turn off.
“Battery Quality” or “State of Health” (SoH) test:
The battery has a limited service life and needs to be replaced at fixed intervals determined by the specified service
life (acc. to the Eurobat guideline), based on the surrounding temperature and the number of charging and
discharging cycles. If the battery is used longer than the specified service life, its capacity will degrade. Section 27-1
contains additional information on the topic. The battery quality test cannot identify a gradual loss in capacity.
However, it is able to detect a battery failure within the specified service life of the battery. Therefore a battery quality
test in included in the DC-UPS.
A battery problem is indicated by the yellow LED (replace battery pattern) and the relay contact “Replace Battery.”
Please note that it can take up to 170 hours (with the largest battery size) until a battery problem is reported. This
should avoid nuisance error messages as any urgent battery problems will be reported by the “Check Wiring” test and
create a warning signal.
When “Replace Battery” is indicated, we recommend replacing the battery as soon as possible.
13. End-of-Charge Voltage
The end-of-charge voltage depends on the temperature of the battery. An excessively high end-of-charge voltage may
damage the battery and shorten its lifetime. Therefore the DC-UPS includes an internal temperature sensor, which
regulates the end-of-charge voltage depending on the battery temperature. To achieve the longest lifetime,
the battery should be placed at the coldest location.
The temperature difference between the DC-UPS and the battery requires a correction of the end-of-charge voltage.
This can be done with the selector on the front side of the unit. See section 15 for details.