9. SPECIFICATIONS
9－141
Operational precautions
1 For the details of how to connect an external regenerative resistor, refer to "Fig. 9-29
Detailed Connecting Methods of External Regenerative Resistors".
2. Some terminals to be connected differ depending on the amplifier capacity.
• Amplifier capacity of 15A to 30 A
Connect an external regenerative resistor between the P and Y (or COM) terminals.
• Amplifier capacity of 50 A
Connect an external regenerative resistor between the P and Y terminals after
removing the short-circuit bar across the P and Y terminals.
3 For an external regenerative resistor with a thermostat installed, protect the resistor by
connecting it to the amplifier as in Fig. 9-28 or connecting the thermostat contact output
to the host controller.
4 Be sure to use a twisted wire for wiring an external regenerative resistor and make
wiring as short as possible (less than 5 m).
5 Use a non-combustible cable or perform non-combustible treatment (silicon tube, etc.)
for a connecting cable and wire an external regenerative resistor so as not to come in
contact with the built-in one.
6 Set Func2 bit 4 using the remote operator according to the allowable effective power of
the external regenerative resistor.
When allowable effective power of regenerative resistor = 20 W or lower:
Func2 bit 4 = 0 (default setting)
When allowable effective power of regenerative resistor = Higher than 20 W:
Func2 bit4 = 1
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