PAS SERIES
Before Using the Unit 2-1
Chapter. 2
Before Using the Unit
Before using the unit, users are requested to thoroughly understand
the following matters.
2.1
Inrush Current
An inrush current flows when the POWER switch is turned on. If you
are planning to use several sets of the unit in a system and turn on
their POWER switches simultaneously, check that the AC power
source or the switchboard is of sufficient capacity.
For details on the inrush current of each model, see Chapter8 "Speci-
fications".
•
Allow at least 10 seconds between power cycles.
Repeated on/off of the POWER switch at short inter-
vals can cause malfunction of the inrush current limit-
ing circuit and shorten the service life of the input
fuse and POWER switch.
2.2
Load
Note that the output will become unstable if the following types of
loads are connected.
1. When Load Current Has Peaks or Is Pulse-Shaped
2. When the Load Generates a Reverse Current to the Power Supply
3. When the Load Has Accumulated Energy Such as Batteries
2.2.1 When Load Current Has Peaks or Is Pulse-
Shaped
The current meter on the unit indicates only mean values. Even when
the indicated value is less than the preset current value, the peak val-
ues may actually exceed the preset current value. In such case, the
unit is instantaneously put into constant-current operation mode, and
the output voltage drops accordingly.
For these types of loads, you must increase the preset current value or
increase the current capacity.
CAUTION
Summary of Contents for PAS 10-105
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