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Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 211QS50003B |
| Manufacturer | Ansaldo (Ansaldo Sistemi Industriali / ASI; drive business now within the Hitachi Energy ecosystem) |
| Product Type | PLC Control Board / Industrial Control Module |
| Series / Platform | Ansaldo 211QS series; QS50 series converters and SPDM series DC drive cabinets |
| Alternate Classification | Power trigger board variant documented for thyristor bridge firing applications |
| Processor | Industrial-grade microprocessor / microcontroller with deterministic scan execution |
| Memory | 512 KB RAM, 1 MB Flash ROM for firmware and application program |
| Digital Inputs | 16 channels, 24 V DC, optically isolated |
| Digital Outputs | 16 channels, 24 V DC, isolated, driving interposing relays, contactors and indicators |
| Control Supply Voltage | 24 V DC (control side); ±15 V DC documented for trigger-board variants |
| Communication Interfaces | RS-485 (Modbus RTU), CANopen |
| Backplane Interface | Proprietary Ansaldo system bus for I/O expansion and controller coupling |
| Status Indication | On-board LEDs for power, run, fault and communication activity |
| Watchdog / Diagnostics | Hardware watchdog timer, power-up self-test and continuous self-diagnostics |
| Operating Temperature | -10 °C to +55 °C (industrial control range; 0 °C to +70 °C documented for trigger-board variants) |
| Storage Temperature | -20 °C to +70 °C |
| Relative Humidity | ≤ 90 % RH, non-condensing |
| Isolation | Galvanic / opto-isolation between field I/O and system logic |
| Protection Class | IP00 to IP20, for installation inside a protected control cabinet |
| Mounting | Plug-in eurocard rack slot; DIN rail or screw fixing for panel-mounted variants |
| Dimensions (W × H × D) | Approx. 100 × 84 × 45 mm |
| Net Weight | Approx. 0.2 kg |
| Certifications | CE, with UL and CSA compliance documented by configuration |
| Country of Origin | Italy |
| Lifecycle Status | Discontinued legacy spare part, subject to verified stock availability |
Main Features and Advantages
Dense, purpose-matched I/O in a single card: Sixteen inputs and sixteen outputs give the 211QS50003B enough capacity to own an entire equipment-level control function — breaker and contactor auxiliary contacts, limit switches, thermal protection trips, permissive and emergency-stop chains on the input side; contactor coils, solenoid valves, annunciator lamps and interposing relays on the output side — without occupying multiple slots. All channels are isolated, so a field-side fault on one circuit does not propagate into the logic or damage adjacent channels.Autonomous local intelligence: The 211QS50003B runs its application program on its own processor with its own memory, which means sequencing, interlocking and trip logic continue to execute at deterministic speed regardless of what is happening on the supervisory network. In practice this is the difference between a communication disturbance that is logged and a communication disturbance that trips a production line.Communication suited to the installed base: Support for Modbus RTU over RS-485 and for CANopen allows the 211QS50003B to talk to the DCS, HMI, protection relays and instrumentation that surround it in older installations, using the cabling and protocol conventions already present in the cabinet. This avoids the cost, panel space and additional failure points of an external gateway.Diagnostics designed for fault isolation: On-board LEDs for power, run, fault and communication state, combined with the hardware watchdog and power-up self-test, let a technician confirm in seconds whether the problem lies in the card, the backplane, the field wiring or the process itself. That capability shortens mean time to repair in exactly the situations where every minute is expensive.Industrial construction: Thickened copper layers, conformal coating against humidity and conductive dust, component selection to industrial temperature grades and a layout optimised for high electromagnetic interference and mechanical vibration give the 211QS50003B the robustness expected in steel mill drive rooms, engine rooms and mine substations. Factory burn-in testing further reduces early-life failures.Lifecycle value: As a discontinued part, the 211QS50003B is no longer available from standard production. A verified, function-tested unit held on the shelf converts a potentially multi-week outage into a same-shift board swap, which is the dominant economic argument for stocking it.
