Electronic vibration switch, internal icp accel., 0-3 ips pk, ac powered, 10a form c relays, class 1 div 1, groups b,c,d, dual 1/2" npt ports (38 pages)
Summary of Contents for PCB Piezotronics IMI SENSORS 685A08
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Model 685A08 Mechanical Vibration Switch Installation and Operating Manual For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-959-4464 24-hour SensorLine: 716-684-0001 Fax: 716-684-3823 E-mail: imi@pcb.com Web: www.imi-sensors.com...
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Assistance is needed to safely operate equipment PCB Piezotronics is an ISO-9001 certified company whose Damage is visible or suspected calibration services are accredited by A2LA to ISO/IEC Equipment fails or malfunctions 17025, with full traceability to SI through N.I.S.T.
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CAUTION Refers to hazards that could damage the instrument. NOTE Indicates tips, recommendations and important information. The notes simplify processes and contain additional information on particular operating steps. The following symbols may be found on the equipment described in this manual: This symbol on the unit indicates that high voltage may be present.
Introduction The Model 685AX8 Series Mechanical Vibration Switches are shock sensitive mechanisms for shutdown of engine or electric motor powered equipment. These switches use a magnetic latch to ensure reliable operation. Pushing the reset button moves the tripping latch into a magnetically held position. A shock/vibration will move the magnet beyond this holding position, thus freeing the spring loaded tripping latch to transfer the contacts and shutdown the machinery.
The Model 685AX8 is designed to be mounted directly on the equipment to be monitored via integral mounting The Model 685AX8 is designed to be mounted directly on the equipment to be monitored via integral mounting holes. holes. 685A08 Dimension Drawing 685A18/A28 Dimension Drawing WARNING AC and DC input signals and power supply voltages could be hazardous.
Disconnect all electrical power to the machine. Make sure the machine cannot operate during installation. Follow all safety warnings of the machine manufacturer. Read and follow all installation instructions. The 685AX8 Series vibration switches are sensitive to shock and vibration in all three planes of motion - up/down, front/back and side/side.
Internal Switches The 685A08 uses 2-SPDT switch terminals with removable screws for all connections (see below.) 685A08 Screw Connections The 685A18 and 685A28 use 1-SPDT switch terminals with removable screws for all connections (see below.) 685A18 & A28 Screw Connections Screw Connections: Normally Open Common...
Sensitivity Adjustment WARNING: REMOVE ALL POWER BEFORE OPENING THE ENCLOSURE. IT IS YOUR RESPONSIBILITY TO HAVE A QUALIFIED PERSON PERFORM ADJUSTMENTS AND MAKE SURE IT CONFORMS TO NEC AND LOCAL CODES. DO NOT ADJUST SENSITIVITY WHILE THE MACHINE IS RUNNING. STAND CLEAR OF THE MACHINE AT ALL TIMES WHEN IT IS OPERATING.