The TK Timer 3*30 is a simple, low cost, versatile timer, suitable for Security Systems and many other applications where a reliable modular timer is required.
TIME INTERVALS
Range 1 0 to 30 seconds. Adjusted by potentiometer.
Range X10 0 to 30 minutes. Selected by plug-in link JP3
(Link IN) and adjusted by the potentiometer.
Two modes of operation are provided and are selected by plug-in link JP2.
MODE A: The relay is ON AFTER the timed period.
When in MODE A, there are two options.
1 Relay Latched ON. (Link JP5: IN)
2 Relay activates Momentarily. ON for 2-3 seconds. (Link JP5: OUT) The relay will stay energised after time out if a trigger input is still present. The relay will de-energise and the timer reset when the input is removed.
MODE B: The relay is ON FOR the timed period then OFF. The relay will be de-energised after time out even if a trigger input is still present. It will reset after removal of the input.
TRIGGER INPUTS
The timer will start when an input is applied to the ‘TRIG’ terminal.
This may be by a Positive voltage +5v - +15v or a Negative (0 volts). The input may be a pulse or a continuous signal.