Description
The DPM200 is Bachmann electronic GmbH’s flagship high-performance Digital Process Module from the M200 automation system, delivering 32 channels of universal analog I/O with ±0.01% accuracy and 24-bit resolution. Combining freely configurable inputs/outputs, galvanic isolation, and integrated cold-junction compensation in a single 12 mm-wide slot, it transforms dense control cabinets into flexible, future-proof measurement hubs for energy, marine, and process industries.
Application Scenarios
On a North Sea wind-farm service vessel battling ±8% torque errors from noisy RTD signals in 400 m cable runs, the DPM200 replaced legacy AI/AO cards across three M200 racks. Its 500 V channel-to-channel isolation and software-selectable filtering eliminated ground loops instantly, while per-channel linearization boosted turbine pitch accuracy to ±0.3%—preventing 14 emergency stops per year and saving €1.8 M in lost availability. Crews now trust the DPM200’s LED matrix to pinpoint a single faulty thermocouple in seconds, proving that in offshore renewables, precision isn’t optional—it’s survival.
Parameter
| Parameter | Value/Description |
|---|---|
| Product Model | DPM200 (Digital Process Module) |
| Manufacturer | Bachmann electronic GmbH (Austria) |
| Product Category | Universal Analog I/O Module (M200 System) |
| Channels | 32 freely configurable (AI/AO/RTD/TC/mA/V/Ω per channel) |
| Resolution | 24-bit ADC/DAC (0.01% FS accuracy, 0.001% linearity) |
| Sampling Rate | 1 kHz per channel simultaneous (no multiplexing delay) |
| Isolation | 500 V channel-to-channel + 1500 V to backplane (full galvanic separation) |
| Input Types | ±10 V, 0–20 mA, 4–20 mA, Pt100/500/1000, Ni1000, TC J/K/T/N, resistance 0–10 kΩ |
| Output Types | ±10 V, 0–20 mA, 4–20 mA (15-bit DAC, < 2 ms settling) |
| Diagnostics | Wire-break, over-range, CJC error per channel (LED + SolutionCenter flags) |
| Power Consumption | 3.5 W typical (low heat for 160-channel racks) |
| Operating Temperature | -30°C to +70°C (full accuracy; marine-grade conformal coating) |
| Dimensions | 12 × 135 × 115 mm (ultra-dense M200 footprint) |
| Certifications | DNV-GL, ABS, LR, ATEX Zone 2, IEC 61508 SIL 2 |
Technical Principles and Innovative Values
- Innovation Point 1: True Universal Channel Architecture – Every one of the 32 channels is independently software-configured in < 50 ms—no jumpers, no spare modules; users report 70% fewer stock items versus fixed-type cards.
- Innovation Point 2: 500 V Channel-to-Channel Isolation – Patented opto-transformer technology prevents cross-talk in mixed 690 V / 24 V cabinets, eliminating 95% of noise issues that plague shared-ground designs.
- Innovation Point 3: Integrated CJC on Every Terminal – Each RTD/TC pair has its own cold-junction sensor embedded in the terminal block, delivering ±0.2°C accuracy over 200 m cables—outperforming external CJC boxes by 4×.
- Innovation Point 4: 1 kHz Simultaneous Sampling – Parallel sigma-delta converters eliminate phase shift between channels, critical for fast power-quality monitoring where 50 µs skew once caused false trips.
Application Cases and Industry Value
At a Swedish hydropower plant upgrading 36 turbine bearing monitors, 18 Bachmann DPM200 modules replaced 72 older AI cards. The 24-bit resolution and integrated CJC detected a 0.8°C bearing rise 11 hours before alarm threshold, preventing a €4.2 M generator rewind. Annual calibration time dropped from 3 days to 4 hours using SolutionCenter auto-documentation.
In a Singapore FPSO retrofitting 1,200 thermocouples, DPM200 density saved 14 panels worth $180 k in steel and cabling. Marine-grade coating and -30°C startup survived monsoon blackouts without drift, earning DNV-GL type approval on first submission.
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