The ESDR421A1 is a recycling time delay relay with onboard adjustment, designed for 120VAC input. It provides an ON time of 1 to 100 seconds and an OFF time of 1 to 100 seconds, with the output energizing first during the ON period. The solid-state output is rated for 1A steady state and 10A inrush current. The module measures 50.8 mm × 50.8 mm × 30.7 mm and uses 0.25 in. (6.35 mm) male quick connect terminals. It is encapsulated for protection against shock, vibration, and humidity, with an operating temperature range of -40°C to 75°C. Factory calibration tolerance is ±5%, and repeat accuracy is ±0.1% or 20ms, whichever is greater.
The ESDR Series offers independent time adjustment of both delay periods. Adjustment options include fixed, onboard or external adjust. The ESDR is recommended for air drying, automatic oiling, life testing, chemical metering and automatic duty cycling. This series is designed for general purpose commercial and industrial applications where a small, cost effective, reliable, solid-state timer is required. The factory calibration for fixed time delays is <±5%. The repeat accuracy, under stable conditions, is 0.1% of the selected time delay. This series is designed for input voltages of 12VDC to 230VAC in five ranges. Time delays of 0.1 seconds to 1000 minutes are available in six ranges. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry. Operation (Recycling - ON Time First)Upon application of input voltage, the output energizes and the T1, ON time begins. At the end of the ON time, the output de-energizes and the T2, OFF time begins. At the end of the OFF time, the output 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 T2 OFF time begins. At the end of the OFF time, the output energizes and the T1 ON time begins. At the end of the ON time, the output de-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.
| Littelfuse, Inc. | |
|---|---|
| Product Category | Solid State Relays |
| Product Number | ESDR421A1 |
| Product Name | Recycling Timer |
| Mounting | Surface mount with 1 #10 (M5 x 0.8) screw |
