YASKAWA S-7 Series Manual page 26

3 Wiring
Terminal Sym-
bols
+
B1/ , B2, and
B3
1 and 2
L3 and
U, V, and W
UA, VA, and
WA
UB, VB, and
WB
D1 and D2
E-24
Terminal Name
Regenerative Resistor
terminals
DC Reactor terminals
for power supply har-
monic suppression

Servomotor terminals
Servomotor terminals
for axis A
Servomotor terminals
for axis B
Dynamic Brake Resis-
tor terminals
Continued from previous page.
Specification
• SGD7S-R70A, -R90A, -1R6A, and 
-2R8A
If the regenerative capacity is insuffi-
cient, connect an External Regenera-
tive Resistor between B1/
Obtain an External Regenerative Resis-
tor separately.
• SGD7S-5R5A, -120A008,
SGD7W-1R6A, SGD7W-2R8A, and
SGD7W-5R5A
If the regenerative capacity is insuffi-
cient, remove the lead or short bar
between B2 and B3 and connect an
External Regenerative Resistor between
B1/ and B2. Obtain an External
Regenerative Resistor separately.
These terminals are to connect a DC reac-
tor for power supply harmonic suppres-
sion and power factor improvement.
None. (Do not connect anything to this
terminal.)
These are the -7S connection terminals
for the Servomotor Main Circuit Cable
(power line).
These are the -7W connection terminals
for the Servomotor Main Circuit Cable
(power line).
These terminals are provided only on
SERVOPACKs that support the Dynamic
Brake Option. These terminals are used to
connect an External Dynamic Brake
Resistor for a -7S SERVOPACK. Obtain
an External Dynamic Brake Resistor sep-
arately.
Note: The SGD7S-R70A to -2R8A
SERVOPACKs do not have D1 and
D2 terminals.
and B2.
Continued on next page.