The TDR4B23 is a recycling time-delay relay with a 10A DPDT relay output, designed for 120VAC operation and configured for OFF time first sequencing. It features independent binary switch settings for OFF times from 1 to 1023 seconds in 1-second increments and ON times from 1 to 1023 seconds in 1-second increments. The unit includes green and red LED indicators for input and output status, and an isolated relay contact rated for 250VAC maximum switching voltage. It operates on a plug-in 8-pin base, measures 81.3 mm high by 60.7 mm wide by 45.2 mm deep, and is housed in a 35mm DIN rail compatible form factor. Operating temperature range is -20°C to 65°C, with storage from -30°C to 85°C. Input voltage tolerance is -20% to +10%, and power consumption is ≤3.25W. Repeat accuracy is ±0.1% or 20ms, whichever is greater, and setting accuracy is ±2% or 50ms, whichever is greater.
The 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.
| Littelfuse, Inc. | |
|---|---|
| Product Category | Solid State Relays |
| Product Number | TDR4B23 |
| Product Name | Relay Output, Recycling Time Delay Relay |
| Mounting | Socket or Plug-in Style; Plug-in socket |
