H904 | SplitCore | uProcessor Based | Range:3.5-135AAC | Output:N.O | 0.1A | Veris

SplitCore | uProcessor Based | Range:3.5-135AAC | Output:N.O | 0.1A

Features

• Microprocessor-based labor savings with no calibration needed to detect belt loss on VFDs
• Self-adjusting trip point factory programmed to detect belt loss undercurrent conditions
• Provides accurate status for VFD loads prevents costly long-term failures
• Automatically compensates for the effects of frequency and amperage changes in monitored conductor associated with VFDs
• Nuisance Reduction feature provides a secondary setpoint option of 50% of the originally measured current
• LED indicates normal and alarm conditions rapid troubleshooting
• Available with a relay (H934) status and control in one package, saving time and space
• Bracket can be installed in three different configurations added flexibility
• Monitors both frequency and amperage distinguishes normal drops in amperage due to frequency changes from abnormal drops due to mechanical failure at four frequencies: 35, 42, 49, and 50
• Split-core design is ideal for retrofits no need to remove conductor
• 5-year warranty

Description

Hawkeye 904, 934, and 720 current monitoring devices provide unique solutions for accurately monitoring status of motors controlled by variable frequency drives. The microprocessor-based H904 & H934 store 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. The relay on the H934 is isolated from the current switch, and all relay connections are externally accessible on the device. The H720 analog output corresponds to current in the monitored conductor from 10 to 80 Hz.

Applications

• Monitoring positive status on motors controlled by variable frequency drives
• Replacing pressure switches
• Measuring current and load trending