Kikusui PLZ164W User Manual page 61

When the DC power supply and the DUT are connected in series,
and turning on/off of the DUT. (PLZ164WA/PLZ664WA only)
PLZ-4W
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-4W and the output of the DC power supply.
DUT
DC power
supply
Fig.5-1 Connecting the DC power supply and the DUT in series
As for the type of 0 V input model PLZ164WA/PLZ664WA, when the connection
between the DC power supply and the PLZ164WA/PLZ664WA 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-connection detection (REV). For the REV, see sec-
tion 5.3, "Types of Protection Functions."
■ To avoid the occurance of alarm by the reverse-connection
detection (REV)
To avoid the occurrence of alarm by the REV, 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" specified in the Fig. 5-1 when the current flows. The alarm can not
be avoided in the CC mode. For the operation mode, see section 5.5, "Operation
Modes."
1. Turn off the DUT.
2. Set the operation mode of the PLZ-4W 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.
For the setting of voltage, see "Operating procedure of CC+CV mode" in sec-
tion 5.6, "CC Mode."
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 finished.
Even when you follow the procedure specified 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.
+
v
-
Load input
terminal
PLZ164WA
PLZ664WA
Basic Operation 5-5