Dynamic Brake Resistor Connections; Terminal Symbols And Terminal Names; Wire Sizes And Tightening Torques - YASKAWA Sigma-7S Series Product Manual

4.2

Dynamic Brake Resistor Connections

Connectors or terminal blocks are used to wire a dynamic brake resistor.
The SGD7S-R70A to -2R8A, SGD7S-R70F to -2R8F, and SGD7W-1R6A to -2R8A do not sup-
port the dynamic brake hardware option specifications, so they do not have any dynamic brake
resistor terminals.
For the SGD7S-3R8A to -330A and SGD7W-5R5A to -7R6A, connect the external dynamic
brake resistor with the enclosed connectors.
For the SGD7S-470A to -780A, connect the external dynamic brake resistor using the terminal
block.
The location and dimensions depend on the model of the SERVOPACK. Refer to the following
sections for details.
1.3 Part Names on page 1-4
2.2 External Dimensions on page 2-8
For information on connections other than to the dynamic brake resistor terminals, refer to the
standard SERVOPACK product manual.
4.2.1

Terminal Symbols and Terminal Names

 Wire all connections correctly according to the following table.
If the wiring is not correct, there is a risk of SERVOPACK failure or fire.
SERVOPACK
Models
SGD7S-
SGD7W-
4.2.2

Wire Sizes and Tightening Torques

SERVOPACK Models
R70A, R90A, 1R6A,
2R8A, R70F, R90F,
1R6F, and 2R8F
3R8A, 5R5A, 7R6A,
120A, 180A, 200A,
SGD7S- and 330A
470A and 550A
590A and 780A
1R6A and 2R8A
SGD7W-
5R5A and 7R6A
*
Any wire sizes within the ranges given in this table can be used for the external dynamic brake resistor.
Terminal
Terminal Name
Symbols
Dynamic Brake
D1 and D2
Resistor terminals
Dynamic Brake
D1A and
Resistor terminals for axis
D2A
A
Dynamic Brake
D1B and
Resistor terminals for axis
D2B
B
Terminal
Symbols
- (There are no D1 and D2 terminals.)
D1 and D2
D1 and D2
D1 and D2
- (There are no D1A, D2A, D1B, and D2B terminals.)
D1A, D2A,
D1B, and
D2B
4.2 Dynamic Brake Resistor Connections
4.2.1 Terminal Symbols and Terminal Names
CAUTION
These terminals are used to connect an external
dynamic brake resistor for a Σ-7S SERVOPACK.
Note: The SGD7S-R70A to -2R8A and -R70F to -2R8F
SERVOPACKs do not have D1 and D2 terminals.
These terminals are used to connect an external
dynamic brake resistor for a Σ-7W SERVOPACK.
Note: The SGD7W-1R6A to -2R8A SERVOPACKs do
not have D1A, D2A, D1B, and D2B terminals.
Wire Size
2
AWG14 (2.0 mm ) to AWG18
2
(0.9 mm )*
2
AWG12 (3.5 mm ) to AWG18
2
(0.9 mm )*
2
AWG12 (3.5 mm ) to AWG18
2
(0.9 mm )*
2
AWG14 (2.0 mm ) to AWG18
2
(0.9 mm )*
Specification
Tightening
Screw
Torque
Size
[Nm]
– –
M4 1.0 to 1.2
M4 1.6 to 1.8
– –
4
4-5