Optional Dynamic Braking Resistors; Minimum Resistances Of Connectable Braking Resistors - Toshiba TOSVERT VF-nC3E Instruction Manual

2) Optional dynamic braking resistors

Optional dynamic braking resistors are listed below. All these resistors are 3%ED in operation rate
VFNC3E-4015P to 4022P
VFNC3E-4055 to 4075P
Note 1: The data in Rating above refer to the resultant resistance capacities (watts) and resultant resistance
Note 2: Braking resistors for frequent regenerative braking are optionally available. For more information,
Note 3: Type-form of "PBR-" indicates the thermal fuse". Type-form of "PBR7-" indicates the thermal fuse
Note 4: VFNC3E-4055P and VFNC3E-4110P:
6

3) Minimum resistances of connectable braking resistors

The minimum allowable resistance values of the externally connectable braking resistors are listed in the
table below.
Do not connect braking resistors with smaller resultant resistances than the listed minimum allowable
resistance values.
Inverter rated output
Note: Be sure to set f308 at the resistance of the dynamic braking resistor connected.
Inverter type
VFNC3E-4037P
VFNC3E-4110P
values (Ω).
contact your Toshiba distributor.
and thermal relay.
Default setting of parameter f308 and f309 is for previous Toshiba breaking resistor PBR3-.
Set parameter f308 and f309 to following table value.
VFNC3E-4055
VFNC3E-4110P
VFNC3E-4015P to 4037P and VFNC3E-4075P:
The default setting values of parameter f308 and f309 are applied to braking resistor option.
Resistance of standard
capacity (kW)
1.5
2.2
3.7
5.5
7.5
11
Braking resistor
Type-form
PBR-2007 120W-200 
120W-160 
PBR-4037
PBR7-004W060 440W-60 
PBR7-008W030 800W-30 
f308
(Dynamic braking resistance)
60.0
30.0
Minimum allowable
option resistance
200  85 
200  67 
160  45 
60  35 
60  34 
30  27 
F-32
Continuous
Rating regenerative braking
allowable capacity
90W
90W
130W
270W
f309
(Dynamic braking resistor capacity)
0.44
0.80
E6582233