Rockwell Automation 1606-XL240-UPSE Power Supply Reference Manual - Manual (Page 22)

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.
22 Rockwell Automation Publication 1606-RM013A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
27.3. Using the Inhibit Input
The inhibit input disables buffering. In normal mode, a static signal is required. In buffer mode, a pulse with a
minimum length of 250ms is required to stop buffering. The inhibit is stored and can be reset by cycling the input
voltage.
As long as the inhibit signal is active in normal mode, an internal relay contact will be opened and the battery will
no longer be charged.
For service purposes, the inhibit input can also be used to connect a service switch. Therefore, the inhibit signal can
be supplied from the output of the DC UPS.
Fig. 28-3 Wiring example for inhibit input
24V
Power
Supply
+
-
DC-UPS
1606-
XLS240-UPSE
24V
IN
24V
OUT
12V
BAT
+
-
+
-
+
-
Signal Port
In
hib
it
+ -
12V
Battery
Module
+
-
Buffered
Load
+
-
Service
Switch
27.4. Troubleshooting
The LEDs on the front of the unit and relay contacts indicate about the actual or elapsed status of the DC-UPS. Please
see also section 15
.
The following guidelines provide instructions for fixing the most common failures and problems. Always start with
the most likely and easiest-to-check condition. Some of the suggestions may require special safety precautions. See
notes in section
25 first.
“Check wiring” LED is on Check correct wiring between the battery and the DC-UPS.
Check battery fuse. Is the battery fuse inserted or blown?
Check battery voltage (must be typically between 7.4V and 15.1V).
Check input voltage (must be typically between 22.8V and 30V).
Check battery polarity.
DC-UPS did not buffer Inhibit input was set.
Battery did not have enough time to be charged and is still below the deep discharge
protection limit.
DC-UPS stopped buffering Deep discharge protection stopped buffering use a larger battery, or allow
sufficient time for charging the battery.
Output was overloaded or short circuit
reduce load.
Output has shut down Cycle the input power to reset the DC UPS.
Let DC UPS cool down, over-temperature protection may have triggered.
DC-UPS constantly switches between normal mode and buffer mode
The supplying source on the input is too small and can not deliver sufficient current.
Use a larger power supply or reduce the output load.