Công Tắc Rung Mw Metrix, Metrix-Mechanical Vibration Switch Mw

5550 Mechanical Vibration Switches

Tham khảo

http://auto-industryvn.com/metrix-vibration-switch-5550-421-320-1106106.html

OVERVIEW

5550 and 5550G mechanical vibration switches provide basic, economical vibration protection by means of a simple and highly reliable “over center” snap action mass and spring mechanism. In the presence of sufficient vibration along the switch’s sensitive axis, the switch snaps from a stable “untripped” state to a stable “tripped” state, allowing automatic machinery shutdown or alarming when excessive vibration occurs. Once tripped, the switch must be returned to its untripped state via its local reset plunger (5550 only), or via voltage applied to its remote reset coil (standard on 5550G, optional on 5550). A single set of silver-plated SPDT relay contacts are provided as standard for connecting the switch to a machine control or annunciation circuit. An option for DPDT contacts is also available, and for extremely corrosive environments, gold-plated relay contacts may be ordered. 

SELECTION CRITERIA

The 5550 and 5550G use identical internal mechanisms, but differ in their housing styles, mounting footprints, hazardous area ratings, and externally accessible features. While the housing used with the 5550G permits its use in the more highly explosive IIC gas group, it is not available with a local reset plunger or with an externally accessible setpoint adjustment screw. The 5550G also occupies a larger mounting footprint. For these reasons, the 5550 is generally the preferred choice except in applications where the IIC gas group is present.

SETPOINT ADJUSTMENT

The switch’s trip point can be adjusted between 0 and 16 g’s (peak) in increments of approx. 1 g (1/8th turn of setpoint adjustment screw). This adjustment screw is externally accessible on the 5550. On the 5550G, the housing’s cover must be removed to access the adjustment screw

REMOTE RESET/START UP DELAY 1

A remote reset/startup delay feature is standard on the 5550G and optional on the 5550. When the switch’s reset terminals are energized, a solenoid is activated. This solenoid will reset the switch (if in its tripped state) and then hold it in this untripped state for approximately 30 seconds*, after which normal operation of the switch resumes. This feature is useful for machines that exhibit higher-than-normal vibration during startup and need to suppress tripping functions until normal operating speeds and conditions have been reached. The holding strength of this solenoid must be properly specified at time of ordering to ensure it can force the switch into an untripped position and hold it there for the duration of the startup delay, even in the presence of high vibration levels (see ordering option C).

SPECIFICATIONS 

ORDERING INFORMATION

5550 OUTLINE & DIMENSIONS 

Liên hệ: Nguyễn Chí Hải

Sdt: 0398991575

Gmail: hai@ansgroup.asia