Product Description
The Schiele 2.423.451.00 is a high-performance digital output module designed by the German manufacturer Schiele (formerly Entrelec/Schiele) for the Systron PM S200 and S250 series DCS and PLC systems . This compact module efficiently converts digital control signals from the controller into reliable on/off outputs to drive a wide range of 24V DC field actuators, including solenoid valves, contactor coils, and indicator lamps.
As an 8-channel transistor output module, the Schiele 2.423.451.00 provides high-speed switching with response times of less than 1 millisecond, making it ideal for applications that demand precise and timely control actions. Engineered with channel-level short-circuit protection and group isolation, this module delivers robust performance while protecting the control system from field wiring faults .
Application Scenarios
In a large-scale bottling plant, the high-speed filling and capping line is controlled by a legacy DCS that uses dozens of digital output modules to drive solenoid valves for liquid dispensing and pneumatic actuators for bottle handling. A critical failure in one output module causes a full production line stoppage, costing the plant $8,000 per hour in lost output. The maintenance team quickly identifies a faulty output channel on the failing module and replaces it with a verified Schiele 2.423.451.00 to restore full operation. The module’s compact DIN rail mounting and pluggable connectors enable a hot-swap replacement in under 15 minutes, and its built-in short-circuit protection prevents a faulty solenoid from damaging the new module . This scenario demonstrates the critical value of the Schiele 2.423.451.00 in minimizing production downtime and protecting valuable control system investments.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | Schiele 2.423.451.00 (also listed as 2423.451.00) |
| Manufacturer | Schiele (Germany; formerly Entrelec/Schiele) |
| Product Category | Digital Output Module – Transistor Type |
| Output Channels | 8 points (group isolated) |
| Rated Voltage | 24V DC (load side); 26.5–31.6V DC (bus side) |
| Output Current (per channel) | 1A maximum continuous |
| Total Output Current | ≤4A (group current limit) |
| Switching Response | < 1 ms (typical turn-on/turn-off delay) |
| Isolation Voltage | 3 kV AC (output to bus/power) |
| Sensor Power Supply | 20–30V DC, 100mA (short-circuit protected) |
| Bus Power Consumption | ≤155mA @ 26.5–31.6V DC |
| Diagnostics | Per-channel LED status indication + power indicator |
| Mounting | 35mm DIN rail |
| Operating Temperature | -20°C to +60°C |
| Protection Class | IP20 (cabinet installation only) |
Technical Principles and Innovative Values
Innovation Point 1: Group Isolation and High Dielectric Strength The Schiele 2.423.451.00 features 3kV AC isolation between the output field circuits and the module’s internal bus/power logic . This high-level galvanic isolation protects the sensitive DCS/PLC processor from voltage transients, ground loops, and fault currents that can occur in harsh industrial environments. The group isolation architecture means all 8 outputs share a common reference, simplifying wiring for solenoid valve banks while still providing robust protection against common-mode faults.
Innovation Point 2: Comprehensive Channel-Level Diagnostics Each of the 8 output channels on the Schiele 2.423.451.00 is equipped with a dedicated status LED that provides instant visual feedback on the output state. Additionally, the module detects overload, short-circuit, and open-circuit conditions, transmitting error status back to the fieldbus coupler for remote monitoring . This diagnostic intelligence transforms the module from a passive actuator driver into an active component of the plant’s condition monitoring system, enabling predictive maintenance before a channel fails completely.
Innovation Point 3: Short-Circuit Protection and Current Limiting The Schiele 2.423.451.00 incorporates built-in current limiting and short-circuit protection mechanisms that safeguard both the module and the connected actuators . If a field wiring short occurs, the module limits the output current to a safe level and signals the fault via diagnostics. This prevents the catastrophic damage that can occur with unprotected outputs, significantly reducing replacement costs and unplanned downtime. The 1A per channel and 4A group current limits are carefully matched to typical industrial solenoid and lamp loads, providing optimal protection without unnecessary derating .
Innovation Point 4: Legacy System Compatibility and Longevity As the Systron PM S200 and S250 platforms are now discontinued, the Schiele 2.423.451.00 has become a critical spare for hundreds of active industrial installations worldwide . The module’s straightforward transistor output design ensures continued compatibility with existing field wiring and control logic. For plant operators extending the life of their legacy DCS infrastructure, this module represents a practical investment in another five to ten years of reliable operation, avoiding the considerable cost and risk of a complete system migration.
