ATC, 304GX-004-Q-00-XX, 304GX Series Solid-State Percentage Timer with Memory, 15 Second Range, 120 VAC and Srandart Dial Calibration
Features:
- Cycle Progress Memory
- Latching Relay
- High Accuracy
- Convenient Adjustment
- 15 Second Range
- 120 VAC
- Srandart Dial Calibration
The 304GX operates like the 304G, only with cycle progress memory and a latching relay. The 304GX saves progress when power is removed, and will resume timing when power is reapplied. The relay only changes state when the cycle reaches the set point or the end of the cycle.
The operation of the new 304GX Percentage Timer is similar to the 304G with several noteworthy enhancements. The accuracy of the 304GX has been improved to 1% of range. With the Cycle Progress Memory feature, when power is removed and restored during the cycle, the 304GX will continue the cycle without resetting. The latching relay only changes state when the cycle reaches the set point or the end of the cycle.
Contacts
The relay contact is capable of switching 10 A to a resistive 120 VAC or 30 VDC load. It is capable of driving a 1/3 HP load at 120VAC.
Cycle Progress Indication
The 304GX has a pilot light that is on solid during the relay off time. It blinks at a faster rate during the relay on time: once every 3.2 Seconds during the first 10% of the cycle, twice during the Second 25% and so on.
High Accuracy
The 304GX's timing circuit is not a simple RC circuit. It utilizes the microprocessor that includes counting technology along with a stable crystal oscillator to provide repeatable time delays.
Convenient Adjustment
Graduated in easily read 1% increments, the 304GX provides Continuous Adjustment of on time between 1 and 99%. The 304GX comes standard in the 60 Sec range but is user configurable for the 15 Sec or MIN by jumpers from the PC board. Each of these ranges can also be made minutes range by a jumper. Its solid-state circuitry repeatedly closes the SPST load switch for a percentage of the time cycle, as set on the timer dial, and opens it for the remainder of the cycle. When the dial pointer is set below 1%, the load switch stays open for the full cycle it remains closed when the pointer is set above 99%. This is true for all Seconds and minutes. If power is interrupted, the 304GX timer will not reset and the relay state will not change. When power is restored, the timer will continue the interrupted cycles
For more information, please see 
Data Sheet
