The 140DRC83000C belongs to the Modicon Quantum series from Schneider Electric. It works as a relay-type discrete output module. Unlike solid-state modules, this one uses mechanical relays. Therefore, it handles both AC and DC loads with ease. You get eight independent output channels on one module.
Each channel provides a Form C contact. That means one Normally Open (NO) and one Normally Closed (NC) contact per output. Hence, you can switch loads in two different ways. The 140DRC83000C accepts a wide voltage range. For AC, it runs from 20 to 250V. For DC, it runs from 5 to 150V. This makes the module highly versatile.
The 140DRC83000C requires only 0.5 output word for addressing. Therefore, two modules fit into one output word. This saves memory in your PLC. Response time is longer than solid-state modules due to mechanical relays. From state 0 to state 1, the maximum delay is 10 ms. From state 1 to state 0, the maximum delay is 20 ms.
Power dissipation equals 2.75 watts plus 0.5 watts multiplied by the number of active outputs. For instance, with all eight outputs on, dissipation is 2.75 + (0.5 x 8) = 6.75 watts. Bus current requirement from the backplane is 560 mA. This is higher than some other modules due to relay coil consumption.
Internal output overvoltage protection uses a varistor rated at 275V. This varistor absorbs voltage spikes from inductive loads. Examples include contactors, solenoids, and small motors. Therefore, external suppression devices may not be necessary for many loads.
Isolation between channels reaches 1780 Vrms AC for one minute. It also withstands 2500V DC. Isolation between any channel and the backplane bus is equally strong. This protects your PLC from field-side faults. The module also includes conformal coating labeled Humiseal 1A33. That coating resists humidity and light contaminants.
The 140DRC83000C operates from 0 to 60 degrees Celsius. Storage temperature ranges from -40 to 85 degrees Celsius. Relative humidity reaches 95 percent without condensation. Operating altitude goes up to 5000 meters. Therefore, this module suits high-altitude and humid environments.
Certifications are extensive. The module holds UL 508 and CSA C22.2 No 142 approval. It also carries FM Class 1 Division 2 for hazardous locations. Marine certifications include DNV, GL, ABS, and RMRS. Additionally, it has RINA, GOST, and C-tick approvals. Hence, the 140DRC83000C works in ships, offshore platforms, and global industrial sites.
Electromagnetic compatibility includes 4 kV contact discharge and 8 kV air discharge immunity. It also tolerates 10 V/m radiated fields from 80 to 2000 MHz.
1. Can the 140DRC83000C switch 240V AC and 24V DC on different outputs?
Yes. Each output is isolated from the others. Therefore, you can mix AC and DC loads on the same module. Just respect the voltage limits for each channel.
2. What is the difference between Form A, Form B, and Form C contacts?
Form C provides both NO and NC contacts in one output. The 140DRC83000C uses Form C. This allows you to choose normally open or normally closed operation per channel. Form A is NO only. Form B is NC only.
3. How do I extend the electrical life of the relays?
Keep the load current well below the maximum rating. Use an interposing relay for high-inrush loads. Add external suppression for inductive loads. This reduces contact arcing and prolongs life.
4. Why does the module require 0.5 output word instead of a full word?
The 140DRC83000C uses only 8 outputs. One output word contains 16 bits. Therefore, two modules share one word. This saves addressing space in your Quantum PLC.
5. Does this module work with 50V DC loads at 500 mA?
Yes. The electrical durability table shows 50,000 cycles at 500 mA for 30 to 150V DC resistive loads. Your 50V DC, 500 mA application fits within that specification.
| Brand Name | Schneider Electric |
| Model No. | 140DRC83000C |
| Product Type | Discrete Output Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
