Toshiba TOSVERT VF-AS3 Instruction Manual page 305
High-performance industrial inverter for 3-phase motors, 3-phase 240v class 0.4 to 55kw, 3-phase 480v class 0.4 to 280kw
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- Instruction manual (599 pages) ,
- Manual (69 pages) ,
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Connect a braking resistor with a resistance value greater than the minimum allowable resistance
value (resultant resistance value). Be sure to set <F308: Braking resistance> and <F309: Braking
resistor capacity> for overload protection.
To use a braking resistor without thermal fuse, connect a thermal relay to shut off the power.
■ Braking resistor option
Following table shows the optional braking resistors. Operation rate is 3%ED.
Rating shows resultant resistance capacities (watt) and resultant resistance values (ohm).
A braking resistor for frequent regenerative braking is also available. Please contact your Toshiba
distributor for information.
The type-form "PBR-" features built-in thermal fuse, and "PBR7-" features built-in thermal fuse and
thermal relay.
The default settings of <F308: Braking resistance> and <F309: Braking resistor capacity> are
intended for the optional braking resistors.
■ Minimum resistance of connectable braking resistor
Following shows the minimum resistance of connectable braking resistor.
Use a braking resistor with a resistance value greater than the minimum allowable resistance value
(resultant resistance value).
■ Minimum resistances of connectable braking resistors
Voltage class
Inverter output capacity (kW at HD)
3-phase 240V
3-phase 480V
• How to operate the operation panel -> Refer to [3. 1. 1].
Reference
• How to switch display mode on the operation panel -> Refer to [3. 1. 2].
• Procedure to change parameter setting -> Refer to [4. 2. 3]
0.4 to 4.0
5.5, 7.5
11, 15
18.5
22 to 55
0.4 to 1.5
2.2, 4.0
5.5, 7.5
11 to 18.5
22, 30
37
45 to 75
90 to 160
220 to 280
6-63
Minimum allowable resistance (Ω)
7.9
5.3
5
4.5
1
78
31.2
22.3
15.6
12
7.9
2.5
1.9
1
6. [Advanced] How to use parameters
E6582062
3
4
6
9
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