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     Sensor Power Induced from monitored conductor     Insulation Class 600VAC RMS     Frequency Range 34 to 75 Hz (belt loss indication); 20 to 34 Hz (on/off status)     Temperature Range -15° to 60°C (5° to 140°F)     Humidity Range 10 - 90% RH, non-condensing     Off Delay 0 sec to 2 min.     Terminal Block Maximum Wire Size 14 AWG     Terminal Block Torque (nominal) 4 in-lbs (0.45 N-m)     Agency Approvals UL 508 open device listing Do not use the LED status indicators as evidence of applied voltage.