Application Scenarios
In a large automotive assembly plant, the conveyor control system required 16 individual start/stop commands to motor contactors driving different sections of the production line. The existing output modules lacked sufficient current capacity and were prone to contact welding under inductive loads. The engineering team replaced them with the Schneider 140DRA84000 , leveraging its 2A per channel (resistive at 60°C) capability and 10A surge current handling to reliably drive contactor coils with inrush currents . The module’s internal 275V varistor protection suppressed the back-EMF from inductive loads, extending relay contact life significantly . The Schneider 140DRA84000 reduced output module failures by over 80%, eliminating unplanned line stoppages. The 16 green LED indicators provided immediate visual feedback on each output state, allowing maintenance technicians to verify control commands in seconds without accessing the PLC software .
In a water treatment plant, the PLC system needed to control 16 chemical dosing pumps and agitator motors operating on 120V AC control circuits. The facility deployed the Schneider 140DRA84000 in its Quantum rack, taking advantage of its broad voltage range (20-250V AC) to directly switch AC loads without external interposing relays . The module’s 10ms response time (OFF→ON) and 20ms response time (ON→OFF) proved sufficient for pump sequencing and alarm annunciation . The Schneider 140DRA84000 ‘s FM Class 1 Division 2 certification also allowed installation in areas with potentially hazardous atmospheres, a critical requirement for the chemical storage section of the facility. Operators appreciated the ability to easily swap the module during maintenance due to its simple rack-mount design.
Key Technical Parameters
| Main Parameters | Value / Description |
|---|---|
| Product Model | 140DRA84000 |
| Manufacturer | Schneider Electric |
| Product Category | Relay Discrete Output Module |
| Platform | Modicon Quantum Automation Platform |
| Discrete Output Number | 16 channels (1 NO per channel) |
| Contact Form | Form A (1 Normally Open) |
| Discrete Output Voltage | 20…250V AC; 5…30V DC; 30…150V DC |
| Minimum Load | 50mA at 20…250V AC; 50mA at 5…30V DC |
| Maximum Load Current | 2A at 250/30V AC/DC resistive (60°C); 1A tungsten; 1A (1/8 hp) |
| Surge Current | 10A for 10ms (capacitive load) |
| Switching Capacity | 500VA resistive |
| Response Time (OFF→ON) | ≤ 10ms |
| Response Time (ON→OFF) | ≤ 20ms |
| Mechanical Durability | 10,000,000 cycles |
| Electrical Durability | 200,000 cycles at max resistive load; 100,000 cycles at 30-150V DC resistive |
| Output Overvoltage Protection | Internal varistor, 275V |
| Isolation (Channel-to-Channel) | 1780 Vrms AC for 1 minute |
| Isolation (Channel-to-Bus) | 1780 Vrms AC / 2500V DC for 1 minute |
| Power Dissipation | 5.5W + (0.5W × number of points ON) |
| Bus Current Requirement | 1100mA |
| Addressing Requirement | 1 Output Word |
| Local Signalling | 1 green LED (Active); 1 red LED (Fault); 16 green LEDs (channel status) |
| Marking / Certifications | CE; FM Class 1 Division 2; UL 508; CSA C22.2 No 142; ABS; GOST; C-tick |
| Operating Temperature | 0…60°C |
| Storage Temperature | -40…85°C |
| Relative Humidity | 95% without condensation |
| Operating Altitude | ≤ 5000m |
| Net Weight | 0.41kg (0.90 lb) |
| Conformal Coating | Humiseal 1A33 (protective treatment) |
