Yaskawa Large Capacity Sigma II Series - Manual (Page 159)

4.6 External Regenerative Resistors
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4.6 External Regenerative Resistors
When installing an external regenerative resistor, set the regenerative resistor’s capacity (W) at
the following parameter.
The factory setting of “0” in the above table is the set value used when the SERVOPACK’s
built-in resistor is used or when a SERVOPACK without a built-in resistor is used.
When installing an external regenerative resistor, set the regenerative resistor’s capacity (W).
When the external regenerative resistor’s actual consumable capacity is 100 W, set the parame-
ter to “10.”
1. In general, when resistors for power are used at the rated load ratio, the resistor temperature
increases to between 200 ° C and 300 ° C. The resistors must be used at or below the rated values.
Check with the manufacturer for the resistor’s load characteristics. Use resistors at no more than
20% of the rated load ratio with natural convection cooling, and no more than 50% of the rated load
ratio with forced air cooling.
2. For safety’s sake, it is recommended that resistors with thermoswitches be used.
Pn600 Regenerative Resistor
Capacity Unit:
10 W
Setting
Range:
0 to SER-
VOPACK
capacity
Factory
Setting:
0
Speed/Torque
Control,
Position Control
EXAMPLE
IMPORTANT