5.4 Setting the Energy Consumption and Resistance of the Dynamic Brake Resistor
5-7
5
Basic Functions That Requir
e Setting befor
e Operation
5.4
Setting the Energy Consumption and Resistance of the Dynamic Brake Resistor
If an external dynamic brake resistor is connected, you must set Pn601 (Dynamic Brake Resis-
tor Allowable Energy Consumption) and Pn604 (Dynamic Brake Resistance).
Set Pn601 to the energy consumption of the dynamic brake resistor that you calculated when
selecting the connected external dynamic brake resistor or the energy consumption of the
resistor as reported by the manufacturer.
Refer to the following section for details on the energy consumption of the dynamic brake resis-
tor.
3.4 Calculating the Energy Consumption of the Dynamic Brake Resistor
Note: An A.042 alarm (Parameter Combination Error) will occur if Pn601 and Pn604 are not set on a SERVOPACK
that supports an external dynamic brake resistor (SGD7S-3R8A to -780A or SGD7W-5R5A to -7R6A).
WARNING
If you connect an external dynamic brake resistor, set Pn601 and Pn604 to suitable values.
Failure to set these parameters will cause A.730 (Dynamic Brake Overload) to be detected
incorrectly and can destroy the external dynamic brake resistor, cause unintended operation
during an emergency stop, cause damage to the machine, and cause burning or injury.
When you select an external dynamic brake resistor, make sure that it has a suitable energy
consumption and resistance.
There is a risk of personal injury or fire.
CAUTION
Mount dynamic brake resistors only on nonflammable materials. Do not mount them on or
near any flammable material.
There is a risk of fire.
Pn601
Dynamic Brake Resistor Allowable Energy Consumption
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 65,535
10 J
0
After restart
Setup
Pn604
Dynamic Brake Resistance
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 65,535
10 m
Ω
0
After restart
Setup
Speed
Position
Torque
Speed
Position
Torque