Connecting Dynamic Brake Resistors - YASKAWA SGD7S-xxxDA0 series Product Manual

 Linear Servomotors
Energy consumption of Dynamic Brake Resistor:
Moving Coil mass:
Load mass:
M
Movement speed before dynamic braking: V [m/s]
= 1/2 × (
E M
DB
Note: Refer to the catalog or product manual of the Servomotor for details on the Moving Coil mass.
 Specifications of the Dynamic Brake Resistor
Have the following specifications ready when purchasing the Dynamic Brake Resistor. In the
blank cells of the table, write down the specifications of the Dynamic Brake Resistor that you
are considering for purchase, and confirm these specifications with the manufacturer of the
Resistor.
Resistance (Ω)
Energy consumption of resistor from dynamic braking (J)
Number of operations of the dynamic brake
(Number of times the dynamic brake will be used in the
service life of the machine (reference data))
Wire size
5.2.3

Connecting Dynamic Brake Resistors

A connector or terminal block is used to wire a Dynamic Brake Resistor.
This section describes the connection of the Dynamic Brake Resistor to a SERVOPACK with a
built-in dynamic brake (SGD7S-1R9D to 170D).
Terminal Symbols and Terminal Names
 Wire all connections correctly according to the following table.
There is a risk of SERVOPACK failure or fire if incorrect wiring is performed.
SERVOPACK
Model
SGD7S-1R9D,
-3R5D, -5R4D,
-8R4D, -120D,
-170D
Note: The SGD7S-210D to 370D are not equipped with a connection terminal for a Dynamic Brake Resistor.
Connecting a Dynamic Brake Resistor
 Wire the Dynamic Brake Resistor correctly. Do not connect the following terminals directly
to each other: D1 and D2.
There is a risk of burning in the SERVOPACK or Servomotor, damage to the machine, or injury.
[kg]
M
M
[kg]
L
) × V
2
+
M
M L
Item
Terminal
Terminal Name
Symbols
Dynamic Brake Resis-
D1, D2
tor terminals
5.2 SERVOPACK Models with a Built-In Dynamic Brake

5.2.3 Connecting Dynamic Brake Resistors

[J]
E
DB
Specification
AWG14 (2.0 mm
CAUTION
These terminals are connected to an External
Dynamic Brake Resistor.
WARNING
2 2
) to AWG18 (0.9 mm )
Specification
5
5-7