Description
The HRDR Series combines an electromechanical relay and
microcontroller timing circuitry. It offers 12 to 230V operation in
five ranges and factory fixed, onboard or externally adjustable
time delays with a repeat accuracy of ±0.5%. The high switching
capacity of the output contacts allow for direct control of heavy
loads like compressors, pumps, motors, heaters and lighting. A
bypass/reset switch option allows operator to interrupt normal
recycling sequence and energize output relay. An excellent
choice for OEM applications.
Operation (Recycling with Reset Switch)
Upon application of input voltage, the ON time T1 begins and
output relay energizes. At the end of the ON time, the output
relay de-energizes and the OFF time T2 begins. At the end of the
OFF time, the output relay energizes and the cycle repeats as
long as input voltage is applied. Some recycling timers have the
OFF time as the first delay.
Reset: Removing input voltage resets output and time delays,
and returns sequence to the first delay.
Bypass/Reset Switch: Closing the normally open bypass/reset
switch energizes the output relay and resets the time delays.
Opening the switch restarts recycling operation with the
first delay.

FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexiblility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Encapsulated Protects against shock, vibration, and humidity
Independent adjustment
of On and Off delays Provides greater flexibility of timing options
Bypass/Reset
switch option
Allows operator to interrupt the timing sequence
and energize the output relay