Timers and Advanced Systems

Time-delay

A _ relay is a type of control relay that switches its contacts to a new state after a predetermined time has elapsed.

Off-delay

An _ timer relay starts its timer after the pushbutton input has been released.

On-delay

An _ timer relay starts timing when the pushbutton input is first pressed.

Compressor

An example of an unloaded start of a motor is on a centrifugal air_.

Dwell

Before the hold on a plastic injection molding machine is pulled apart, a _ period must occur to allow the plastic to cool and harden.

Unloaded

In order to avoid overheating a motor and causing damage, it is recommended that the motor be _ when it is started.

Timing

The three basic components of a time-delay relay are the coil, the contacts, and the _ mechanism.

Time-driven

_ sequencing uses timer relays in place of limit switches to sequence the operation of a machine.

Solid-state

_ time-delay relays use a resistor-capacitor network as a timing circuit.