E6581531
E-35
5
VF-PS1 with ratings of up to 200kW have built-in dynamic braking transistor as standard equipment. If the rating of
your inverter falls within this range, connect the resistor, as shown in Figure a) below or Figure b) on the next page. If
your inverter has a power rating of 250kW or more, connect a resistor, as shown in Figure c).
Connecting an external braking resistor (optional)
a) External braking resistor (with a thermal fuse) (optional)
[Parameter setting]
Title
Function
Adjustment range
Example of setting
RD
Dynamic
braking
selection
:Disabled
:Enabled (braking resistance
overload detect)
:Select (braking resistance overload
not detect)
Do not connect an external resistor with a resistance (combined resistance) smaller than the minimum
admissible resistance.
For overload protection, be sure to set the parameters
RDT
and
RDER
properly.
[Parameter setting]
Title
Function
Adjustment range
Example of setting
RDT
Dynamic
braking
resistance
~
Ω
Any
value
RDER
Allowable continuous braking
resistance
~
kW
Any value
H
Braking resistance overload
time
~
sec.
Set the parameter to
for type PBR*- or
to any value for other
types.
IM
Motor
R/L1
S/L2
T/L3
Three-phase
main circuit
Power supply
PA/+
PB
MCCB
An external braking resistor
(optional)
Inverter
U/T1
V/T2
W/T3