BECKHOFF C9900-U3x0 - Manual (Page 6)

The C2000BAT UPS control board
The C2000BAT UPS control board
Uninterruptible power
supply
An industry PC with a 24 V power supply can optionally be fitted with an
uninterruptible power supply, which maintains correct operation of the
device for about 15 minutes by means of a NiCad battery, after failure of
the main power supply. The control is performed by the C2000BAT UPS
control board.
Not all connections are
used in the application with
the C1230S
1
1
1
no
t
us
ed
not us
ed
CP9030/C1230S
BECKHOFF C2000BAT
Battery/Pwr. sup.
Fuse
1A
LC-
display
Switch for
LCD illumination
Mai
n
s powe
r
supp
ly
bo
ar
d
Battery reverse connection
protection
Fuse inside the battery The UPS control board is fitted with a simple form of protection against
reverse battery connection. If the battery is accidentally connected with the
wrong polarity, high current flows for a short period, and this blows the fuse
(3,15 A) on the C2000BAT board. The location of the fuse on the board
can be seen in figure 1. There is also a fuse (8 A) inside the battery, to
provide short circuit.
Switch for the LCD
background illumination
(only older devices, e.g.
C20xx, C32xx) The UPS control board allows the LCD back light to be switched on and off
by means of a switch on the side of the housing, or by software through the
PIO chips on the C1230S. Switching the LCD back light off can save
current under battery operation. If the software has switched the back light
off when under battery power, it can be switched on again using the switch.
The NiCad battery (18 V / 0.65 Ah / 1,8 Ah / 2,5 Ah) supplies the device for
up to 15 minutes, depending on how fully charged the battery is and on the
hardware installed in the IPC, giving the software time to save all its data.
This time may be only app. 4 minutes with devices of higher energy
consumption.
C9900-U3x0 3