VFD Series of variable frequency drive rotary screw air compressors from Sullivan Palatek range in size from 15 to 450 hp. The standard VFD microprocessor has a customer-friendly display with expanded descriptions of all the operating controls. It has RS485 communication between it and the VFD and displays all pertinent VFD power consumption data on the microprocessor screen.
The system can be programmed per the user’s daily operating schedule, and allows shut-off during factory shut down up to 28 different times per week.
Built-in sequencer will trim up to 8 VFD or non-VFD machines with microprocessor controls.
Digital output includes:
• drain times
• exact set pressure
• load and unload pressures
• Modbus addresses
• power failure auto restart
• shut down for excessive temperature or pressure
• stop run on time
• time for unloaded start