01 / Technical reference
Document overview
Variable-frequency-drive compressor controls, sequencing and operating ranges. The source brochure describes a microprocessor-controlled drive, pressure scheduling, and lead-lag compressor coordination.
Published technical specifications
Published VFD control capabilities
| Parameter | Published configuration |
|---|---|
| Series power range | 15-450 HP |
| Listed supply-voltage range | 200, 230 and 460 V |
| Built-in sequencer capacity | Up to 8 VFD or non-VFD compressors |
| Programmable weekly schedule | Up to 28 shutdown periods per week |
| Communication with drive | RS485 |
| Main drive heavy-duty overload rating | 150% for 1 minute |
| Main drive starting torque | 150% at 1 Hz |
| Cooling arrangement | 15-40 HP: inline/horizontal; 40-450 HP: vertical/updraft |
This is a family-control brochure, not a model-specific rated-airflow sheet. Confirm the selected motor voltage and VFD arrangement against the applicable model PDF.
Published equipment features
- Controller displays pressure and selectable drive power, current, speed, temperature and service readings.
- Pressure scheduling, target-pressure control, lead/lag sequencing and drive communication are described in the brochure.
- Factory VFD programming and a separate fan-speed drive are described for applicable configurations.
- Publication contains historical energy-cost and tax-incentive references; these are not represented as current guarantees.
Application guidance
Use this reference when reviewing motor ratings, pressure-dependent flow, starter configurations and installation requirements. Electrical and pressure ratings must be checked for the exact motor, voltage and operating setpoint.
Technical questions / Manufacturer reference
Frequently asked questions
What motor range is covered by the VFD literature?
The published VFD documentation lists a range of 15-450 hp. Confirm the drive and electrical configuration for the installation.
How many compressors can the VFD controller sequence?
The listed controller capability is Up to 8 compressors. Check the configuration and communications requirements in the original brochure.
Does the VFD reference list weekly scheduling?
Yes. The listed weekly scheduling capability is Up to 28 shutdown times per week.
Specifications depend on the model, configuration and document revision. Consult the manufacturer PDF linked on this page for the complete reference.