Goodrive350A series high-performance multifunction VFD
Optional peripheral accessories
-413-
the resistance and power for 100% brake torque, 10% brake usage, 50% brake usage, and
80% brake usage. You can select the braking system based on the actual operation conditions.
When using an external braking unit, set the brake voltage class of the braking unit properly by
referring to the manual of the dynamic braking unit. If the voltage class is set incorrectly, the
VFD may not run properly.
Do not use braking resistors whose resistance is lower than the specified
minimum resistance. The VFD does not provide protection against overcurrent
caused by resistors with low resistance.
In scenarios where brake is frequently implemented, that is, the brake usage is
greater than 10%, you need to select a braking resistor with higher power as
required by the operation conditions according to the preceding table.
D.8.2 Braking resistor cable selection
Braking resistor cables need to be shielded cables.
D.8.3 Braking resistor installation
All resistors need to be installed in places with good cooling conditions.
The materials near the braking resistor or braking unit must be non-flammable.
The surface temperature of the resistor is high. Air flowing from the resistor is of
hundreds of degrees Celsius. Prevent any materials from coming into contact
with the resistor.
Installation of braking resistors
The VFD models of 037G/045P and lower need only external braking resistors.
PB and (+) are the terminals for connecting braking resistors.
VFD
PB
E
x
te
rn
a
l b
ra
k
in
g
re
s
is
to
r
+
Installation of braking units: