METRIX - 5550 & 5550G Mechanical Vibration Switches

5550 & 5550G Mechanical Vibration Switches Datasheet Model 5550 Model 5550G 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 silverplated 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

SPECIFICATIONS
All specifications are at +25C (+77° F) unless otherwise noted. 5550 5550G Amplitude Range 0 to 16 g pk NOTE: Reset coil holding strength (option C) may limit the usable amplitude range of the switch when the startup delay feature is required. Frequency Range 0 – 60 Hz (0 – 3600 rpm) Setpoint Adjustment Location: Externally Accessible Location: Internally Accessible (cover must be removed to access) Resolution: 1g (approximately 1/8th turn of adjustment screw where one full turn ≈ 8g) Range: 0 – 100% of amplitude range Wiring Entries One (3/4” NPT or M20 x 1.5 – see option E) Two (3/4” NPT only – see Figure 2) Local Reset Manual plunger-style pushbutton on switch housing Not available (must use remote electrical reset) Temperature Limit -40° C to +70° C (-40° F to +158° F) Mounting 4-hole rectangular in various dimensional options (see Figure 1 and ordering option E) 2-hole rectangular (see Figure 2) Remote Electrical Reset / Startup Delay Optional (see ordering option D). Applying a momentary voltage to the reset terminals will reset the switch to its untripped position. Applying a persistent voltage to the reset terminals will suppress the trip mechanism from actuating for the duration of voltage application or 30 seconds, whichever is less (a thermistor circuit limits the maximum delay time). Reset Coil Holding Strength • 2g, 5g, or 10g (see ordering option C). This option dictates the highest g-levels under which remote reset / startup delay capabilities will still operate. Enclosure Material • Copper-free cast aluminum (standard NEMA 4 version) • Copper-free cast aluminum with clear epoxy coating (optional NEMA 4X version) Cast aluminum with blue epoxy coating Environment Rating • NEMA 4 / IP66 (standard) • NEMA 4X / IP66 (optional) • NEMA 4 / IP66 Hazardous Area Rating Explosion Proof / Flameproof (IIB + H2 ) (see ordering option A) Flameproof (IIC) Agency Certifications ATEX / IECEx Ex d IIB + H2 T6 Gb ATEX / IECEx Ex d IIC T6 Gb UL US/CA Class I Div 1 Grps B,C,D Class II Div 1 Grps E,F,G INMETRO Ex d IIB + H2 T6 Gb Weight 1.8 kg (4.0 lbs) 2.5 kg (5.5 lbs) Contacts Type SPDT (standard) DPDT (optional) Plating Material Silver (standard) Gold (optional) Ratings Silver-plated Gold-plated 15A @ 125-480 Vac 1A @ 125 Vac 1/4 hp @ 125 Vac 1/8 hp @ 250 Vac 0.5A @ 125 Vdc 0.25A @ 250 Vdc