Kikusui PAD-L III Series, Operation Manual

Page: 63 / 132

PAD-L Applied Operation 4-11
When you wish to connect the shield to Ei
CAUTION
• When connecting the shield to the Ei side, do not connect the
shield to the + (pos.) output terminal of the unit.
When using a shielded wire, some external voltage sources may require that the
shield be connected to the external voltage source (Ei). In such cases, the grounding
method used for the Ei and the unit creates a condition where the output is short-
circuited, as shown in Fig. 4-8. Thus, do not connect the shield to the + (pos.) output
terminal of the unit.
GND
+
+
–
+
–
–
6
+S
Ei PAD-L
2-core
shielded wire
Output is short-
circuited by
the shield, causing
current to flow.
Ground
the - output
terminal.
Fig. 4-8 A connection where output is short-circuited by the shield
WARNING
• Do not ground the output of the Ei – float it instead. The potential
of control terminals are nearly the same as that of the unit's +
(pos.) output terminal, and short-circuit currents are provided to
the signal line without a shield.