And Of The Rear; Pab110-0.6A, Pab250-0; Pab3.50 - Kikusui PAB 18-1A Instruction Manual

3-2-3. Control
of
Output Voltage With External Resistance
II
o
This operation
is
with
a
fail-safe feature such that
the
output
voltage becomes zero volts
when
the
external re.slstance
signal
circuit
is
made open
(the
resistance has become infinitive).
*
Read "Restrictions
on
Remote Control Operation" at the
beginning
of Section
3.
(1)
Disconnect the
input power cord. Remove the
cover referring
to Section
4-1-3. Remove PC board A-650.
(2)
Change
the
connections of connectors C and
G on
PC board A-650
as
shown
in
Figure 3-8. (Refer to
Figures
3-5 and 3-3.)
Figure 3-8
(3)
Connect
the
external resistance signal
(Rl)
between
terminals
(?)
and
of the
rear terminal block.
(4)
Throw
the
R/L switch
on the
front panel
to the L po,sitlon.
(5)
Throw
switch
S
to
the.
white mark position. (See Figure 3-5.)
(6)
Turn
the
FINE VOLTAGE setting potentiometer to the counter-
clockwise extreme position, remove
its
knob, and install
the
guard
cap. (See Item
(10)
of
Section 2-1.
)
(This
procedure
is
not needed for
the
PAB110-0.6A, PAB250-0.25A
and PAB350-0.1A
V7htch
have no FINE VOLTAGE setting potentiometer.)
(7)
Paying attention
so that the
PC board
is
not contacted with
the chassis, turn on the POWER switch and the OUTPUT
switch.
(8)
Set the external resistance signal
to
zero and adjust potentio-
meter CV
MAX
on PC
board A-650
so
that the output
voltage becomes
the
maximum
rated voltage.
44
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