Power supply
8.3 Uninterruptible power supply (UPS)
AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
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System Manual, 06/2016, A2B00096162-AN
Energy requirements
The entire energy requirements are derived from the following three physical effects:
●
Energy requirements of the control unit → W
AT
Quiescent current consumption of the controller over the time to be bridged
●
Energy requirements due to holding powers → W
HOLD
Current consumption due to continuous torques
●
Energy requirements due to door movement W
MOVE
Current consumption during traversing due to system friction and acceleration of the door
leaves
The energy to be stored by the UPS is therefore derived as follows:
The corresponding mathematical equations of these terms are as follows:
Energy requirements of the control unit
Energy requirements of the holding powers
Energy requirements of the door movement
Energy requirements of the UPS ACCU
Definitions of tags
Tag
Unit
Definition
F
FR
N
Friction force door
F
HC
N
Holding power door closed
F
HO
N
Holding power door open
I
O24
A
Current consumption 24 V external
m
D
kg
Door weight
N
C
–
Number of OPEN/CLOSED cycles
s
D
m
Distance door leaves
T
HC
s
Holding time CLOSED
T
HO
s
Holding time OPEN
T
STBY
s
Standstill time without holding power
v
C
m/s
Closing speed
v
O
m/s
Opening speed