Shaft Speed Switches
A speed switch senses rotating shaft speed, comparing it to one or more settable over/under/zero speed alarm trip-points. A shaft speed sensor detects magnets embedded in a shaft-mounted pulser wrap/disc. As the shaft rotates, the passing magnets are detected across an air-gap as pulses with frequency proportional to shaft RPM. When a conveyor belt or bucket elevator begins to slip the pulse frequency (shaft RPM) crosses to the alarm side of a trip-point threshold, a corresponding relay de-energizes, providing shutdown or alarm.
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Product
Speed Switch
DR1000
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Features • Works with remote / external pulse frequency output sensor (NPN, PNP, or Mag Pick-up) • DPDT relay output • Under-speed setpoint adjustment from 0.5-5,000 rpm (at 8 PPR) • Terminal blocks for easy wiring • 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options • Rugged explosion proof / NEMA 4X housing • UL Listed Class I, Div I (C, D) Class II, Div I (E, F, G)
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Product
Speed Switch
UDS1000
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Features • Works with remote / external quadrature pulse frequency output sensor / incremental encoder (NPN or PNP) • DPDT relay changes state when shaft direction reverses • Reverse-over-speed setpoint adjustment from 0.5-5,000 rpm • Relay resets when reverse motion stops • 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options • Explosion proof/NEMA 4X housing • UL Listed Class I, Div I (C, D) Class II, Div I (E, F, G)
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Product
Slow Speed Switch
SS110
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Features • Works with remote/external pulse frequency output sensor (NPN, PNP) • Setpoint ranges: 0.01-0.99 & 0.1-9.9 rpm • SPDT relay output • Monitors speeds down to 100 min. per rev • Dial-in calibration does not require power • Built-in start delay • DIN rail mounting simplifies installation • 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options
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Product
Speed Switch
SCP1000/SCP2000
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Features• Internal sensor• Over-or under-speed config., 1-990 rpm• 1 DPDT relay output (SCP1000), 2 SPDT relay outputs (SCP2000)• Built-in start delay• Dial-in calibration does not require power• 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options• Works with Electro-Sensors magnetic pulser discs / wraps• Explosion proof housing• UL Listed Class I, Div I (C, D) Class II, Div I (E, F, G)
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Product
Speed Switch
M100T/M5000T
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Features• Internal sensor• SPDT relay output• 5-100 rpm (M100T), 100-5,000 rpm (M5000T)• Terminal block for easy wiring• 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options• Works with Electro-Sensors magnetic pulser discs/wraps• Explosion proof (XP) housing• UL Listed Class I, Div I (C, D) Class II (E, F, G)
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Product
Speed Switch
LRB1000/LRB2000
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Features• Works with remote/external pulse frequency output sensor (NPN, PNP)• Over- or under-speed 1-1,000 rpm• 1 SPDT relay output (LRB1000) or 2 SPDT relay outputs (LRB2000)• Visual setpoint adjustment with digital accuracy• Dial-in calibration does not require power• Built-in start delay• DIN rail mounting simplifies installation• 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options
