Toshiba VF-S9 Power Supply User Manual


 
E6580757
F-28
6
1) Connecting an external braking resistor (optional)
Separate-type optional resistor (with thermal fuse)
IM
R/L1
PBR
External braking resistor (optional)
Three-phase
main circuits
Power supply
Motor
Connecting thermal relays
and an external braking
resistor
Without control power
External braking resistor
(optional)
Motor
Forward run/stop
Reverse run/stop
Inverter
Power supply
Three-phase
main circuits
Power supply
Fuse
Surge
suppressor
Step-down
transformer
PBR
S/L2
T/L3
U/T1
V/T2
W/T3
PA
MCCB
Inverter
PB
MC
MC
MCCB
TC
FLB
F
W/T3
V/T2
U/T1
K
CC
G
R/L1
PA PB
TH-R
R/L2
R/L3
FLC
FLA
IM
2 : 1
[Parameter setting]
Title Function Setting
Dynamic braking selection 2
Braking resistor operation rate Any value
Overvoltage limit operation 1
Optional dynamic braking resistor capacities are selected for an operation rate of 3%ED.
To connect a dynamic braking resistor, set the overvoltage limit operation parameter
to
"1" (Disabled).
To use this inverter in applications that create a continuously regenerative status (such as down-
ward movement of a lift, a press or a tension control machine), or in applications that require
slowdown stopping of a machine with a significant load inertial moment, increase the dynamic
braking resistor capacity according to the operation rate required.
To connect an external dynamic braking resistor, select one with a resultant resistance value
greater than the minimum allowable resistance value. Be sure to set the appropriate operation
rate in
to ensure overload protection.
To use a braking resistor without a thermal fuse or to use a braking resistor in mode
"
" of , connect thermal relays as shown in the diagram above, to make an operation cir-
cuit for stopping operation.