Setting The Energy Consumption And Resistance Of The Dynamic Brake Resistor - YASKAWA Sigma-7S Series Product Manual

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).
 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.
 Mount dynamic brake resistors only on nonflammable materials. Do not mount them on or
near any flammable material.
There is a risk of fire.
Dynamic Brake Resistor Allowable Energy Consumption
Pn601 Setting Range
0 to 65,535
Dynamic Brake Resistance
Pn604 Setting Range
0 to 65,535
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 on page 3-14
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).

5.4 Setting the Energy Consumption and Resistance of the Dynamic Brake Resistor

WARNING
CAUTION
Setting Unit Default Setting
10 J
Setting Unit Default Setting
Ω
10 m
Speed
When Enabled
0 After restart
Speed
When Enabled
0 After restart
Torque
Position
Classification
Setup
Torque
Position
Classification
Setup
5-7
5