TECHTOP TD20 Series, Руководство по эксплуатации продукта

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TD20 Series VFD Appendix C Peripheral Options and Parts
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TD20 series VFDs have internal braking units.
Model
Type of
brake unit
Brake
resistor at
100% of
the
braking
torque (
Ω)
The consumed power of the brake
resistor Min.
brake
resistor
(
Ω)
10% braking 50% braking 80% braking
TD20-0R4G-S1
Internal brake
unit
361 0.06 0.3 0.48 42
TD20-0R7G-S1 192 0.11 0.56 0.9 42
TD20-1R1G-S1 96 0.23 1.1 1.8 30
TD20-0R4G-S2 361 0.06 0.30 0.48 42
TD20-0R7G-S2 192 0.11 0.56 0.90 42
TD20-1R5G-S2 96 0.23 1.10 1.80 30
TD20-2R2G-S2 65 0.33 1.70 2.64 21
TD20-0R4G-2 361 0.06 0.3 0.48 131
TD20-0R7G-2 192 0.11 0.56 0.90 93
TD20-0R7G-4 653 0.11 0.56 0.90 240
TD20-1R5G-4 326 0.23 1.13 1.80 170
TD20-2R2G-4 222 0.33 1.65 2.64 130
Note:
Select the resistor and power of the braking unit according to the data our company provided.
The braking resistor may increase the braking torque of the VFD. The resistor power in the above table
is designed on 100% braking torque and 10% braking usage ratio. If the users need more braking torque,
the braking resistor can decrease properly and the power needs to be magnified.
•
Never use a brake resistor with a resistance below the minimum value
specified for the particular VFD. The VFD and the internal chopper are not
able to handle the overcurrent caused by the low resistance.
•
Increase the power of the braking resistor properly in the frequent braking
situation (the frequency usage ratio is more than 10%).
C.7.2 Placing the brake resistor
Use shielded cables for braking resistor cables.
Install all resistors in a place where they will cool.
•
The materials near the brake resistor must be non-flammable. The surface
temperature of the resistor is high. Air flowing from the resistor is of
hundreds of degrees Celsius. Protect the resistor against contact.
Only external braking resistor is needed in TD20.