SMC-PS111 ZERO SPEED SWITCH | AUTOTECH

Upon application of power to the input, the internal relay is energized and a time interval starts. If there is motion being sensed, pulses will be present at the sensing input, and the timer will be reset on each pulse. If pulses are coming at a rate faster than the time interval set by the potentiometer, the relay will stay energized. Should motion stop, the unit will time out and de-energize the internal relay. If the pulses restart, the relay re-energizes and the timer restarts.

Noncontact Proximity Sensors

PS Series Speed Switches when used with QS series sensors can monitor motion of any metallic target such as gear teeth, chain links, sprockets, bolt heads, etc.

Encoders, Programmable Controllers, etc.

The pulse input to the PS Series Speed Switches can come from any 12 VDC device such as PLC’s, encoders, photoelectric devices, etc.

Electromechanical Sensing

PS111 may also be used with a repetitive contact closure such as a limit or reed switch. The switch contacts will carry low voltage at low current, therefore the leads should be isolated from any other wiring that might induce noise into the sensing output.

Input Voltage: 105 to 135 Volts, 50–60Hz
Operating Temperature: –10 to +130 °F
Output: One SPDT and One SPST (N.C.) contacts
Rating: 10 Amp. resistive @ 120 VAC
Life Mechanical: 10,000,000 operations
Under Full Load: 200,000 operations minimum
Under Half Load: 1,000,000 operations minimum
Transient Protection: 1,000 volts for 8
milliseconds, 1% duty cycle
Sensor Input:
     Input impedence 4.7k to ground
     Logic 1: 5 to 13 VDC, Logic 0: 0 to 0.8 VDC

Pick-up Speed Variation: 10% of setting over input voltage and temperature range
Maximum number of pulses per minute (PPM):  10,000
Pick-up Repeatability: 2% at constant temperature and input voltage

Installation & Operation Manual