Kikusui PWX1500H, User Manual

Page: 25 / 131

PWX
25
Sensing
1
Inst
allation
and Prep
aratio
n
1
Turn the POWER switch off.
2
Remove the sensing terminal cover and sensing connector from the rear
panel sensing terminals.
3
Remove the local sensing jumpers from the sensing connector.
4
Remove 7 mm of the wire covering. Connect the negative sensing cable
to -S and the positive sensing cable to +S.
Use cable screws to securely fix the cables in place so that they do not come loose.
5
Firmly attach the sensing terminal cover and sensing connector to the
rear panel sensing terminals.
6
Turn the POWER switch on.
 Electrolytic capacitor to connect across the load
If the wiring inductance component is large, the following symptoms may appear.
•
The PWX series oscillates
If the wires used to connect to the load are long, the wiring inductance and capacitance
can cause phase shifting at a level that can not be ignored. This may lead to oscillation.
• The output fluctuates
If the load current changes drastically in a pulse-shaped pattern, the output voltage may
become large due to the wiring’s inductance component.
You can reduce the inductance component by twisting the load cables, which stabilizes the
voltage. However, if this does not rectify the problem, connect an electrolytic capacitor across
the load.
Electrolytic capacitor to use
Capacity: 0.1
μ
F to a few hundred
μ
F
Withstand voltage: At least 120 % of the rated output voltage of the PWX series
 If you are inserting a mechanical switch between the PWX series and the
load
If you want to connect and disconnect the load using a mechanical switch that is inserted
between the PWX series and the load, be sure to include switches in the sensing cables as
shown in the following figure and turn on and off the load cable and the sensing cables simul-
taneously. Before you turn the mechanical switch on or off, be sure to turn the output or the
POWER switch off.
LF/ L type MLF/ ML type MHF/ MH type HF/ H type
36 V or more 96 V or more 276 V or more 780 V or more
Load
S
+
–
C
+
–
+S
–S
+
–