Specifications

98
Power The rate at which work is done or energy is transformed. In
an electric circuit, power is measured in watts, or sometimes
in horsepower. The term power is also often used to refer to
electrical energy and as an adjective to describe devices or
circuits designed to carry a high level of current.
Power Factor The ratio of true power to apparent power in a circuit. Power
factor is also equal to the cosine of the phase angle.
Programmable Logic A type of industrial computer used to control machines and
Controller (PLC) processes. The PLC accepts inputs from switches and sensors
and uses these inputs together with other data and program
logic to control output devices.
SIMATIC S7-400 SIMATIC S7-300
Proportional-Integral- A closed-loop control technique that seeks to minimize error by
Derivative (PID) Control reacting to three values, one that is proportional to the error,
one that is representative of the error over time, and one that is
representative of the rate of change of the error.
Proximity Sensor A type of sensing switch that detects the presence or absence of
an object without physical contact.
Pulse Width Modulation As applied to variable frequency drives, this is a technique for
(PWM) controlling the voltage applied to an AC motor by varying the
pulse width while also controlling the frequency of the pulses.
Pushbutton A control device used to manually open and close a set of
contacts.
16 mm 3SB2
Pushbutton
22 mm SIGNUM
3SB3 Pushbutton
30 mm Class 52
Pushbutton