Setting Regenerative Resistor Capacity - YASKAWA SGMJV User Manual

3 Wiring and Connection

3.7.2 Setting Regenerative Resistor Capacity

3.7.2

Setting Regenerative Resistor Capacity

When a non-Yaskawa external regenerative resistor is connected, always set Pn600 (Regenerative Resistor
Capacity) to the resistor capacity.
• If Pn600 is set to 0 when a non-Yaskawa external regenerative resistor is connected, regenerative over-
load alarms (A.320) may not be detected. If the regenerative overload alarm (A.320) is not detected cor-
rectly, the external regenerative resistor may be damaged and an injury or fire may result.
Pn600
Be sure to set the regenerative resistor capacity (Pn600) to a value that is in accordance with the allowable
capacity of the actual external regenerative resistor being used.
The setting will vary with the cooling method of external regenerative resistor:
• For natural convection cooling: Set the value to a maximum 20% of the actually installed regenerative
• For forced convection cooling: Set the value to a maximum 50% of the actually installed regenerative
Example: Set 20 W (100 W × 20%) for the 100-W external regenerative resistor with natural convection
Note 1. If Pn600 is not set to the optimum value, alarm A.320 will occur.
2. When set to the factory setting (Pn600 = 0), the SERVOPACK's built-in resistor or Yaskawa's regenerative resis-
3-32
Regenerative Resistor Capacity
Setting Range
0 to SERVOPACK
capacity
resistor capacity (W).
resistor capacity (W).
cooling method:
Pn600 = 2 (unit: 10 W)
tor unit has been used.
• When the external regenerative resistors for power are used at the rated load ratio,
the resistor temperature increases to between 200 and 300°C. The resistors must be
used at or below the rated values. Check with the manufacturer for the resistor's load
characteristics.
• For safety, use the external regenerative resistors with thermoswitches.
WARNING
Speed
Unit Factory Setting
10 W 0
Torque
Position
Classification
When Enabled
Immediately Setup