PAS SERIES Remote Control 4-11
4.1.4
Controlling the output current using external voltage
This method is used to control the output current using an external
voltage (Vext) in the range 0 V to approx. 10 V.
To control the output current using external voltage, you must set CC
control of CONFIG settings to "1." For details on CONFIG settings,
see "3.2.4 Unit Configuration (CONFIG)".
Press the SET switch to check the preset current.
• The insulation of the external voltage source (Vext)
and the cable connecting it should be greater than
the isolation voltage of the unit. For details on the iso-
lation voltage of each model, see Chapter8 "Specifi-
cations".
In addition, leave the output of the external voltage
sour
ce (V
ext) floating. For details, see "2.5 Grounding
the Output Terminal".
• When using shielded wires for connection, protect
the uncovered section of the shielded wire by using
insulation tubes with a withstand voltage greater than
the isolation voltage of the unit.
The output current (Io) varies in the range of 0 to rated output current
by setting the external voltage (Vext) in the range of 0 V to 10 V.
Io = Irtg•Vext /10 [A] Vext = 10•Io /Irtg [V]
Irtg: Rated output current [A]
For a portion of the 10 V, 20 V, 40 V, 60 V, and 80 V models, the
p
r
od
ucts may be manufactured under the following specifications.
See also Chapter8 "Specifications".
The output current (Io) varies in the range of 0 to rated output current by setting the
external voltage (Vext) in the range of approx. 0 V [0.5 V] to 10 V [9.5 V]. (The value
inside brackets is the design value.)
Io =Irtg •(Vext-0.5)/9 [A] Vext = (Io/Irtg•9)+0.5 [V]
0.5 ≤ Ve
xt ≤ 9.
5 [V]
Irtg: Rated output current [A]
• Make sure the polarity of Vext is correct. Otherwise,
damage to the unit may result.
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