Kikusui PLZ-30F, Operation Manuals

Page: 52 / 192

4-8 Basic Operation PLZ-U
When the DC power supply and the DUT are connected in series,
and turning on/off of the DUT.
The following describes for testing the DUT (in CC mode) when the DUT (an open-
close device such as a switch) is connected between the load input terminal of the
PLZ-U and the output of the DC power supply.
Fig. 4-4 Connecting the DC power supply and the DUT in series
As for the type of 0 V input model PLZ70UA, when the connection between the DC
power supply and the PLZ70UA is opened circuit, a reverse voltage is applied to the
load input terminal, and the alarm is occurred to turn off the load by the reverse con-
nection protection (RVP). For the reverse connection protection (RVP), see section
4.4.1, “Protection Function.”
■
To avoid the occurance of alarm by the reverse connection
protection (RVP)
To avoid the occurrence of alarm by the reverse connection protection (RVP), set
the operation mode to the "CC+CV" mode, then it is necessary to set the voltage
value of the CV at lower than the voltage "V" speci
fi ed in the Fig. 4-4 when the cur-
rent fl ows. The alarm can not be avoided in the CC mode. For the operation of
"CC+CV" mode, see section A.2.4, “Operation of the CC+CV Mode.”
1. Turn off the DUT.
2. Set the operation mode of the PLZ-U to the "CC+CV" mode.
3. Set the voltage of the CV for approximately 1 V lower than the output
voltage of the DC power supply.
4. Set the current of the CC complied to the condition of the DC power
supply.
5. Press the LOAD key to turn on the load.
6. Turn on the output of the DC power supply.
7. Turn on the DUT.
8. Turn off the DUT when the test is fi nished.
Even when you follow the procedure speci fi ed above, the alarm may occurs, in such
case, it may be required to change the voltage setting of CV to prevent the alarm
occurance. For details, contact your Kikusui agent or distributor.
+
-
PLZ70UA
DC power
supply
DUT
Load input
terminal
v