Eagle Signal Timers

CD300 Solid State Timers

Overview / Design Principle:

The CD300 is a solid state reset timer housed in a standard CYCL-FLEX® case. The timer uses CMOS integrated circuits for the timing function. The timer is set by three digital thumbwheel switches on the front of the unit. Five neon annunciators on the front of the unit indicate when the unit is timing, and the timing cycle progress in increments of 25%, 50%, 75% and 100% (timed out).

Operation:

The timing is controlled by an internal oscillator. The oscillator output is directed to designated frequency dividers through a programming wire, providing the selection of one of three time ranges.

Relay (CR1) is energized when power is applied to the control input. For standard start units, timing starts when the clutch relay is energized. For reverse start units, the timer is reset when the clutch relay is energized and timing starts when the input to the relay is removed.

A delay relay (CR2) is energized when the timing cycle is complete. The operation of the delay relay is identical in both standard start and reverse start units.

Features and Benefits:

• Configured into one of three time ranges via program wire located on printed circuit board inside the unit (easily accessible when unit is removed from the case)
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• Function is similar to Eagle Signal brand HP5 and CT530/531
• Easily programmable reverse start feature
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• Two electromechanical relays control output sequences - one energizes when timer starts timing cycle and the other energizes when timer completes timing cycle
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• Usable timing output available when instantaneous and delayed relay contacts are interconnected

Download The Complete CD300 Technical Manual (286 kb .pdf file)