✓ Standard: 2-3 days
✓ Urgent: 24-48 hours*
✓ Service Exchange: 48-hour replacement*
✓ Spare Unit: Same unit as the original*
* Services subject to availability
Variodyn is Schindler’s variable voltage variable frequency lift drive line, the natural successor to its earlier Dynatron and Transitronic drives. It is built in three blocks: a Drive Command Module that computes the speed profile and motor torque, a Power Module that rectifies three-phase mains to DC and inverts it back to variable voltage and frequency, and an Interface to the Miconic controller.
Power switching uses an Integrated Intelligent Power Module with IGBTs chopping at up to 24 kHz. Schindler sizes Variodyn in kVA, not kW: closed-loop members of 140 kVA and above regenerate braking energy through a four-quadrant converter. Published gearless figures reach up to 10 m/s and 5000 kg.
The type code on the plate reads DR VAB, DR VAF or DR VAP. The VF10 BR and VF20 BR are obsolete, and the VF35, VF50 and VF85 run over a proprietary serial link from the Schindler MX controller, so substituting another maker’s drive is impractical.
IGBT power module chopping at up to 24 kHz
Regeneration of braking energy on closed-loop members of 140 kVA and above
Levelling accuracy of plus or minus 3 mm, with automatic re-levelling
Power factor between 0.85 and 1
Seven-stage speed profile with four separately adjustable jerk rates
Supports both geared and gearless traction machines
Faults recorded and recalled through the integral Schindler LCD control panel
| Manufacturer | Schindler |
|---|---|
| Series | Variodyn VF |
| Drive Type | Elevator drive |
| Typical Applications | Elevators & lifts |
| Product Status | Obsolete; no Schindler discontinuation notice published |
| Model |
|---|
| Schindler Variodyn VF10BR |
| Schindler Variodyn VF20BR |
| Schindler Variodyn VF33BR |
| Schindler Variodyn VF88 PF1AC |
| Schindler Variodyn VF11 BR |
✓ 2-year warranty
✓ Fast service
✓ Experienced engineers
✓ Friendly customer service
✓ 24/7 technical support
✓ Courier return service
✓ Global coverage
✓ Reliability
✓ Flexibility
✓ No fix no fee
✓ Low prices
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