Hawkeye 904 microprocessor-based current status switches provide a unique solution for accurately monitoring status of motors controlled by variable frequency drives. The H904 stores the sensed amperage values for normal operation at various frequency ranges in non-volatile memory. This information allows the device to distinguish between a reduced amp draw due to normal changes in the frequency and an abnormal amp drop due to belt loss or other mechanical failures.

APPLICATIONS

• Monitoring positive status on motors controlled by variable frequency drives
• Replacing pressure switches

Microprocessor-based…real labor saver…No need to calibrate to detect belt loss on VFDs

• Self-adjusting trip point…factory programmed to detect belt loss undercurrent conditions
• Provides accurate status for VFD loads
• Automatically compensates for the effects of frequency and amperage changes associated with VFDs
• LED indicates normal and alarm conditions
• Huge labor savings—no need to calibrate in live starter enclosures;install and go
• Available with a relay;status and control in one package, saving time and space
• Bracket can be installed in three different configurations;added flexibility

Accurately detects belt loss and coupling shear on VFD driven motors

• Monitors both frequency and amperage; distinguishes normal drops in amperage due to frequency changes from abnormal drops due to mechanical failure
• Split-core design is ideal for retrofits; no need to remove conductor
• 5-year limited warranty