UB40.241
UB-Series
24V,
40A,
DC-UPS
Jun. 2020 / Rev.0.1 DS-UB40.241-EN All values are typical figures specified at 24Vdc input voltage, 40A output current in
power supply mode at 25°C ambient, no charging and after a 5 minutes run-in time unless otherwise noted.
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12/34
8.
I
NHIBIT
-I
NPUT
The inhibit-input is a feature to disable the battery mode on purpose. This can be the case when buffering should actively be stopped in
order to save battery capacity and to have shorter recharging time.
The inhibit-input can also be used in case of a service event, where the application must be turned off.
Buffering can be inhibited or stopped:
-
When a static voltage is applied to the inhibit-input terminals, there will be no buffering after the
input voltage is switched off.
-
When, during the battery mode, a short voltage pulse with a minimum length of 250ms is applied to
the inhibit-input terminals, the output will switch off and stay off until the input voltage recovers.
Batteries will still be charged when the inhibit mode is activated or a voltage is applied to the inhibit-
input terminals.
Signal voltage
Max.
35Vdc
Signal current
Max.
6mA, current limited
Inhibit threshold
Min.
Max.
6Vdc, buffering is disabled above this threshold level
10Vdc
Isolation voltage
See chapter
“
Dielectric Strength
”
Fig. 8-1
Wiring example for inhibit-input
Fig. 8-2
Activating the inhibit-input
+ +
- -
Power
Supply
DC 24V, 40A
Output
AC Input
L N PE
UB40
DC-UPS
IN
OUT
+
+
-
-
In
h
ib
it
+ -
BAT
+
-
+
-
UZK24
Battery
Module
Load
+
-
Input
Output
Inhibit
Input
Output
Inhibit
250ms
Battery Mode
Case
A
Input
Output
Inhibit
Case
B
Battery Mode
Inhibit not activated !
Case
C
7
+
5.1V
3mA
Inhibit
8
-
