Power Supply Module; I/O Module; Mother Board - ABB SPAU 341 C User Manual

Power supply
module

I/O module

Mother board

The power supply module is located behind the
system front panel of the regulator and can be
withdrawn after removal of the system front
panel. The power supply module produces the
voltages required by the regulating modules
from the auxiliary voltage.
There are two types of power supply modules,
differing only in input voltage:
SPGU 240 A1:
Rated voltage U = 110/120/230/240 V ac
n
U = 110/125/220 V dc
n
Operative range U = 80...265 V ac/dc
SPGU 48 B2:
Rated voltage U = 24/48/60 V dc
n
Operative range U = 18...80 V dc
Which power supply the regulator contains, is
marked on the system panel.
The I/O module SPTR 6B32 is located on the
rear panel of the regulator, in the same direc-
tion as the mother board. It can be removed by
undoing the fixing screws, the protection earth
cable, and the bus connection to the mother
board.
Signals received from and transmitted to the I/
O module are linked to the mother board, which
distributes them to the proper regulating mod-
ule. Furthermore, the mother board contains
secondary supply voltage lines to the regulating
modules. The regulating modules have their
The power supply module is a transformer-con-
nected, i. e. galvanically separated primary and
secondary circuits, flyback type rectifier. The
primary circuit is protected by a 1 A fuse, F1
(slow), in SPGU 240 A1, and a 4 A fuse (fast)
in SPGU 48 B2. The fuses are located on the
circuit board of the module.
When the power supply module is operating,
the green LED indicator Uaux on the system
panel is lit. The supervision of the supply
voltages for the electronics is incorporated into
the regulating modules. A self-supervision alarm
is given if one of the secondary voltages differs
by more than 25% from the rated value. An
alarm signal is also obtained, if the power sup-
ply module is missing, or if the auxiliary volt-
age to the regulator has been interrupted.
To be noted! If the I/O module for some rea-
son has to be changed, and the regulator con-
tains the manual regulating module SPCN
1D56 with the position measuring option, the
mA input has to be recalibrated. The I/O mod-
ule includes all the output relays, the relay con-
trol circuits, the external control inputs, and the
circuits needed for the serial bus.
fixed positions on the mother board: the auto-
matic voltage regulating module SPCU 1D50
in location U1 (the leftmost module location)
and the manual voltage regulating module
SPCN 1D56 in location U2 (the middle loca-
tion). The rightmost module location is empty.
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