Inovance SV660P Series - Page 137

Wiring
‑136‑
Setting the regenerative resistor
● Using an external regenerative resistor
When P
b
> P
a
, an external regenerative resistor is needed. Set H02‑25 to 1 or 2
based on the cooling mode of the regenerative resistor.
Use the external regenerative resistor with 70% derated, that is, P
r
= P
b
/(1 – 70%),
and ensure the resistance of the regenerative resistor is higher than the minimum
permissible resistance of the servo drive. Remove the jumper bar between
terminals P⊕ and D, and connect the external regenerative resistor between
terminals P⊕ and C.
For the wiring diagram and lead wire specifications of the external regenerative
resistor, see “
Connecting the regenerative resistor ” on page 132 . Set H02‑25 to 1 or
2 based on the cooling mode of the regenerative resistor, and set the following
parameters properly.
☆Related parameter
Para.
No.
Name
Value
Range
Unit
Description
Setting
Condition
Effective Time Default
H02‑21
Minimum
permissible
resistance of
regenerative
resistor
Model
dependent
‑
Defines the minimum
permissible resistance of the
external regenerative
resistor.
At display
‑
Model
dependent
H02‑26
Power of
external
regenerative
resistor
1–65535 W
Defines the power of the
external regenerative
resistor used.
Note:
The power of the external
regenerative resistor cannot
be lower than the calculated
result.
At stop Immediately
Model
dependent
H02‑27
Resistance of
external
regenerative
resistor
1–1000 Ω
Defines the resistance of the
external regenerative
resistor used.
Note:
The resistance of the
external regenerative
resistor (H02‑27) cannot be
lower than the permissible
minimum resistance defined
by H02‑21. Otherwise, Er.922
(Resistance of the
regenerative resistor too
small) will occur.
At stop Immediately
Model
dependent