Summary of Contents for PCB Piezotronics IMI SENSORS Y685A19
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Model Y685A19 Mechanical Switch with Remote Reset solenoid and 24VDC powered. Installation and Operating Manual For assistance with the operation of this product, contact the 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.
Table of Contents Introduction ........................Page 3 General Features Warning Installation ........................Page 4 Internal Switches ......................Page 4 Remote Reset and Power On Delay ................Page 5-6 Setting Up The Switch ....................Page 6-7 Typical Installation Locations ..................Page 8-9 PAGE 2...
Introduction The Mechanical Vibration Switch is a shock sensitive mechanism for shutdown of engine or electric motor powered equipment. This switch uses a patent pending linear adjustment magnetic latch technology 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 shut down the machinery.
Installation: The vibration switch is sensitive to shock and vibration in all three planes of motion – up/down, front/back and side/side. Side/side (in the same plane as the reset pushbutton) is the most sensitive. For maximum sensitivity, mount the unit so that the side with the reset button is in-line with the direction of rotation of the machine. The vibration switch must be firmly attached/mounted to the machine so that all mounting surfaces are in rigid contact with the mounting surface of the machine.
Chassis Screw Terminal Remote Reset and Power On Delay Models 685A19, 685A29 and 685A39 have provisions to reset the switch remotely. The vibration switch can be remotely reset after being tripped by applying the correct voltage across the reset terminal as shown below. NOTE: There is no positive/negative polarity needed for the wiring.
685A29 Only – A 120VAC power supply is needed to remotely reset the switch by energizing a solenoid. Upon applying 120VAC to the solenoid, the unit will need 184mA to energize the remote reset coil. At standard ambient temperature, the solenoid has a 25% “on” 75% “off” cycle. Maximum allowed On Time ( remote reset energized ) versus minimum Off Time ( remote reset de-energized ) On Time ( 25% ) Off Time ( 75% )
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Figure 1: Reset Button Figure 2: Sensitivity Adjustment Screw Figure 2A: Resetting the Switch Figure 2A: Adjusting the Sensitivity 3) Start the machine. 4) If the instrument trips on start-up, allow the machine to stop. Turn the sensitivity adjustment ¼ to ½ turn clockwise.
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Model Number Revision: A LINEAR ADJUST MECHANICAL VIBRATION SWITCH 685A19 ECN #: 51040 OPTION AL VERSION S Performance EN GLISH Optional versions have identical specifications and accessories as listed for the standard model except Measurement Range 7 g pk 68.7 m/s² pk where noted below.
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PCB Piezotronics Inc. claims proprietary rights in REVISIONS the information disclosed hereon. Neither it nor any reproduction thereof will be disclosed to others DESCRIPTION without the written consent of PCB Piezotronics Inc. ADDED NOTE 1 46319 SENSITIVITY ADJUSTMENT RESET SWITCH SCREW 3.70 [94.0]...