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Frequently inquire Together
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InquiryBasler DECS-250-CN1SN1N Digital Excitation Control System
The Basler DECS-250-CN1SN1N, also cataloged as the DECS-250 digital excitation controller, operates as a dedicated PWM-based excitation control unit for synchronous generator field regulation and protective relay interfacing.
Suffix Breakdown & Model Matrix
- C: 120 VAC / 125 VDC control power input
- N: Standard excitation (no optional PSS)
- 1: Internal autotracking function only
- S: Spring-type connection terminals
- N: Standard communication (100Base-T Ethernet / Modbus TCP)
- 1: Standard case mounting type
- N: None / standard configuration
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DECS-250-CN1SN1N |
| Brand | Basler Electric |
| Origin | USA |
| Weight | ~6.62 kg (14.6 lb) |
| Dimensions | 159 mm x 305 mm x 219 mm |
| Operating Temp | –40 to +70 deg C |
| Power Consumption | 120 VAC / 125 VDC input |
| Core Performance | PWM excitation, 15 Adc continuous, Modbus TCP |
Firmware Flash Compatibility and Deterministic Networks
The DECS-250 integrates with deterministic Ethernet-based networks using Modbus TCP over 100Base-T. Firmware flash compatibility ensures that system updates can be applied without altering excitation parameters. Internal autotracking maintains generator field stability during transitions. The controller’s programmable I/O supports flexible integration with PLC/DCS systems, while watchdog contacts provide fail-safe signaling.
Frequently Asked Questions
Q: What communication protocols are supported? A: The controller supports Modbus TCP via 100Base-T Ethernet and USB configuration through BESTCOMSPlus®.
Q: How many programmable I/O contacts are available? A: 16 programmable inputs, 11 Form A outputs, and 1 watchdog Form C contact.
Q: What protection functions are integrated? A: Over/under voltage, over/under frequency, reverse power, loss of PMG, field short circuit, and sync check.
Field Installation Guidelines
- Mount the controller securely in the designated case slot with proper ventilation.
- Connect excitation leads using spring-type terminals, ensuring torque compliance.
- Route sensing and communication cabling separately from high-voltage conductors.
- Configure alarm setpoints and I/O mapping via BESTCOMSPlus® before commissioning.
- Validate Modbus TCP connectivity and firmware version prior to energizing the generator field.
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- TEL: +86 180 3027 3592