Kikusui PAT160-25T, Operation Manual

Page: 216 / 218

A-36
PAT-T 4kW
The output is unstable.
Symptom Check Items Remedy
Some o u tp u t levels are
u nstable w hen I t u rn the
VOLTAGE or CURRE N T
knob w hile the o u tp u t is
on.
Is the operation mode s w itching
from CV to CC or CC to CV?
Change the setting (o u tp u t
voltage or o u tp u t c u rrent) that is
limiting the o u tp u t to a val u e
greater than the present setting. If
the preset val
u e is at maxim u m,
yo u m u st u se a po w er s u pply w ith
a larger o u tp u t voltage or c u rrent.
4-6
4-
8
The o u tp u t voltage or
o u tp u t c u rrent fl u ct u ates.
Are yo u u sing master-slave
parallel operation?
The performance degrades
slightly d
u ring master-slave
parallel operation.
–
Is the remote sensing f u nction
t u rned on?
If yo u are not u sing the remote
sensing f u nction, t u rn off the
sensing s w itch on the rear panel.
4-27
Are both the CV LED and the CC
LED t
u rned on?
• If the o u tp u t is oscillating w hen
u sing remote sensing, insert a
capacitor across the load.
• The circ u itry may have
malf u nctioned. Immediately
stop the u se of the PAT and
req u est repairs.
4-26
Does the sensing cable or load
cable have poor contact or is the
cable broken? T u rn off the POWER s w itch and
check the w iring. 2-6
Does the load c u rrent have peaks
or is it p u lse-shaped?
The peak val u e may be exceeding
the preset c u rrent. Increase the
preset c u rrent or increase the
c u rrent capacity.
4- 8
The o u tp u t voltage is offset
from the val u e at po w er-
on.
Did 30 min u tes pass since the
po w er w as t u rned on?
Warm u p the PAT w ith the po w er
t u rned on for at least 30 min u tes. –
See