¡
In the event of one power supply failing and ceasing output of
power, use of N+1 parallel redundancy means that output voltage
is guaranteed through a backup; therefore, the system can con-
tinue with normal operation.
However, please consider the following condition.
1
5% or less of the output voltage decrease when one power sup-
ply stops.
2
Even if one or several power supplies stop, output current that
meets the following formula is required from the remaining nor-
mally operating power supplies.
In parallel operation, the maximum operative number of units is
5.
3
Please detach or exchange the broke down power supply after
intercepting the input voltage (impossible hot swap).
4
The broke down power supply is detached or exchanged, and
after output voltage of new one is adjusted alone, the power
supply should be connected load (your system).
*
Parallel operation cannot be done with standard model.
-
The following electric specifi cations are different from standard
model.
5
If diodes are used to confi gure a circuit to achieve even higher
reliability, use connections as in Fig. 5.9.
-
Please connect the diode with +V.
-
Please do not connect VB of the power supply mutually.
In this case, master-slave operation cannot be done.
-
Please adjust to become 100mV or less the difference of setting
VB voltage of each power supply by the potentiometer for the
output voltage setting to suppress the change of the output volt-
age to about 5% or less when one stops.
AC-DC Power Supplies Enclosed Type
Instruction Manual
ADA-16
ADA
The rated
current per unit
X
(Number of unit)
X
0.9
Output current in
parallel operation
Fig.5.8 N+1 redundant operation
Output Voltage(V)
ADA600F
Load
Regulation
(mV)
ADA750F
240 max
300 max
360 max
480 max
ADA1000F
24
30
36
48
Load
+
-
-
+
CB VB
-
+
CB VB
-
+
CB VB
-
+
CB VB
-
+
CB VB
Load
+
-
-
+
CB VB
-
+
CB VB
-
+
CB VB
-
+
CB VB
-
+
CB VB
Fig.5.9 N+1 redundant operation which uses diode
me̲ada1.indd ADA-16
me ada1 indd ADA-16
2015/08/07 9:23:59
2015/08/07 9:23:59
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