Instruction Manual
4.1 Connection method
4.2 Sequence unit
n
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Pay attention to these points when connecting a DBS series unit
to the STA5000T.
STA5000T can optionally be equipped with a sequence unit for
controlling the DBS series units' remote control circuits ON/OFF
with a particular timing.
”
Employing this sequence unit enables starting and stopping of up
to 4 DBS systems at differential times.
The sequence unit operates by shorting the SYSTEM ON/OFF
terminals to change the status of the REMOTE SIGNAL 1 - 4
ON/OFF terminals from H to L.
Under the following situations, however, the signal from the
REMOTE SIGNAL 1 - 4 ON/OFF terminals will change from L to H.
1) 1 of the 3 phases is missing, due to equipment failure, etc.
2) Activation of the thermal detection.
Power units equipped with a sequence unit have the model name
STA5000T-R”.
REMOTE SIGNAL 1-4 signal might be H level if voltage drop
would happen when load is light.
For detailed information on how to use the sequence unit, please
consult our sales or engineering departments.
1 For some users, noise regulation requirements may make a
noise filter necessary.
Users are recommended to install a noise filter to reduce radi-
ation noise from the cabling, especially in cases where the ca-
bling is long.
2 Be sure to connect up the REMOTE ON/OFF terminals (or the
REMOTE SIGNAL ON/OFF terminals in a STA5000T-R) before
running the DBS.
Using the DBS without those terminals connected could dam-
age the STA5000T.
Unit type
A-131
4 Connecting the unit
to a DBS series unit
3.2 Mounting screw
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Keep isolation distance between screw and internal components
as below chart.
3.1 Cooling
3 Assembling and
Installation Method
Mounting screw
Chassis
Unit
8mm max
M4
STA5000T
AC(R)
AC IN
3
200V
AC(S)
AC(T)
2
REMOTE ON/OFF (+)
REMOTE ON/OFF (-)
1
DBS
DBS
+V
-V
+VIN
-VIN
RC1
+VOUT
-VOUT
-VIN
RC1
-VOUT
-S
-S
-VIN
+VOUT
+S
+S
RC3 RC2
AUX
-S
RC3 RC2
AUX
-S
Load
Load
STA
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The power unit is designed for use with forced cooling by external
fans. When the power unit is used, the temperature of part A of
the unit should be below 75 degree by flowing cooling-air inside
of unit uniformly.
AIR
AIR
20
A
SS3
FAN
FAN
55
Radiator Plate
