Solid-State Output Timers, Digital Timing, THK Timers, Airotronics,

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Solid-State Output Timers With Digital Timing - THK Timers


Solid-State Output Timers With Digital Timing - THK Timers
THK Timers

THK timers are solid-state output units with digital timing. The TH comes in a 2" square case. Ease of installation and hook-up is a primary design benefit. All models with integral time adjustment knob or factory-fixed time require only two connections. They may be wired in-line just like a single pole switch. Units with external time adjustment have two additional terminals for the resistor or potentiometer.

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Timing Mode

Application of input voltage to the timer starts the “Off” time delay. At the end of the “Off” time delay, the “On” time delay starts, and the load is energized. At the end of the “On” time delay, the load is de-energized, the timer returns to the “Off” time delay, and cycling continues as long as input voltage is applied. Removal of the input voltage resets the timer.

FEATURES
  • Digital timing, solid-state output
  • 1 Amp current load handling
  • 10 Amps single-cycle surge handling
  • 4 Overlapping AC voltage ranges (from 19 to 277 volts)
  • 1% Repeat accuracy
  • Virtually unlimited time ranges
  • Factory-fixed or variable-timing adjustment
  • Totally encapsulated for protection from harsh environments
  • O-ring sealed exposed controls
  • Single screw mounting through center mounting hole
  • Standard 6.35mm (.250") quick connect blade terminals
  • 100% Operational testing before shipping

BASIC WIRING AND DIMENSIONS
SPECIFICATIONS

Repeat Accuracy: 0.1% under fixed conditions

Timing Ranges:

  • 0.1 sec. to 24 hours (1 sec., 10 sec.,
  • 100 sec., and 1000 secs. are standard.) Special time ranges available upon request

Reset/Recycle Time: 100 milliseconds

Tolerances:

  • Fixed: 10% of nominal time (optional: – 5%, 1%)
  • Variable: -0%, +15%
  • Limit: -10% at minimum time

Recycle Effect: None

Temperature Ranges:

  • Storage: -40° C to +85° C
  • Operating: -25° C to +85° C

Life Expectancy:

    No predictable failure if used within operating parameters

Protection:

  • Transient Protection: 18 joules
  • Dielectric Strength: 1800V RMS 60 Hz

Power Requirement: .25 watts max.

Weight: 3 oz. (85g) maximum

Solid-State Output: SPST (N.O.)

Load Current: 1 amp continuous, 10 amps single-cycle surge

Time Cycle Interrupt: Resets timer to original state (Input Voltage Break)

SELECTION PROCEDURE
Mode of Operation Series Input Voltage Time Ranges Time Adjustment Method
Repeat-Cycle Off/On Delay THK

    1

      40-140 VAC

      50/60 Hz

    2

      90-260 VAC
      50/60 Hz

    3

      19-48 VAC
      50/60 Hz

    8

      90-277 VaC
      50/60 Hz

VARIABLE TIME PERIODS
0001 .1 to 1 sec.
0010 .1 to 10 sec.
0100 1 to 100 sec.
1000 10 to 1000 sec.

Any range up to 24 hours available on special order.

FIXED TIME PERIODS
Specify in seconds (S) or hours (H)
Examples:
  • 400S is 400 seconds
  • 05H5 is 5.5 hours
  1. Variable, integral, knob on timer.
  2. Variable, remote potentiometer timer
  3. Fixed, internal, factory set.
  4. Fixed, external resistor remote.


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