TDR Series - Relay-Output, Recycling Time Delay Relay
from Littelfuse / SSAC and Anderson-Bolds
Littelfuse Timers, TDRs and Monitors
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The Littelfuse TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time.
Operation (Recycling - ON Time First)
Upon application of input voltage, the green LED glows, the output relay
is energized, the red LED glows, and the T1 ON time begins. At the end
of the ON time, the output deenergizes, the red LED turns OFF and the
T2, OFF time begins. At the end of the OFF time, the output relay
energizes and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the green LED glows, the T1 OFF time
begins, the load is OFF. At the end of the OFF time, the T2 ON time
begins, the load energizes, and the red LED glows. At the end of the ON
time the load de-energizes and the red LED turns OFF. The cycle repeats
until input voltage is removed.
Reset: Removing input voltage resets the output and the sequence to the OFF time.
Features & Benefits:
ON & OFF time delay settings: Independent adjustment allows for greater flexibility
3 Time Ranges Available (0.1s to 2.8h): Makes it versatile for use in many applications
Microcontroller based: Repeat Accuracy + / - 0.1% or 20 ms, whichever is greater; Setting Accuracy + / - 2% or 50 ms, whichever is greater
DIP switch adjustment: Provides first time setting accuracy
Isolated output contacts: Allows control of loads for AC or DC voltages
LED indication (select models): Provides visual indication of relay status
Littelfuse Recycle Timer Series TDR
Specification:
Time Delay
Type Digital integrated circuitry
Range: 0.1–102.3 s in 0.1 s increments 1–1023 s in 1 s increments 10–10,230 s in 10 s increments
Repeat Accuracy: ±0.1 %
Setting Accuracy: ±2 %
Reset Time: ≤ 150 ms
Time Delay vs. Temperature & Voltage: ±5 %
Indicator: LED glows during timing; relay is de-energized
Input
Voltage: 12, 24, or 110 V dc; 24, 120, or 230 V ac
Tolerance: 12 V dc & 24 Vdc/ac-15 %–20 %110 V ac/dc to 230 V ac-20 %–10 %
Ac Line Frequency: 50/60 Hz
Power Consumption: ≤ 3.25W
Output
Type: Electromechanical relay
Form: DPDT
Rating: 10 A resistive @ 120/240 V ac; 1/3 hp @ 120/240 V ac
Life
Mechanical - 1 x107; Electrical - 1 x 106
Protection
Polarity: Dc units are reverse polarity protected
Isolation Voltage: ≥ 1500 V RMS input to output
Mechanical:
Mounting: Plug-in socket
Dimensions: H 44.45 mm (1.75”); W 60.33 mm (2.38”); D (with socket) 104.78 mm (4.13”)
Termination: Octal 8-pin plug-in
Environmental:
Operating/Storage Temperature-20 °C to 65 °C / -30 °C to 85 °C
Weight: ≅ 4 oz (113 g)
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| Littelfuse detail of Dip switches. Timers can have a mix of ranges |
