Basler Electric DECS-250-LN2SN1N Digital Excitation Control System

Overview

The Basler Electric DECS-250-LN2SN1N is a DECS-250 digital excitation control system for synchronous generator and motor excitation control. Basler specifies the DECS-250 family for voltage, var, and power-factor regulation, with generator and motor protection functions.

The LN2SN1N style identifies a 24/48 Vdc control-power configuration with internal/external autotracking, spring-type terminals, and 100Base-T Ethernet using Modbus TCP. This style has no power system stabilizer or automatic synchronizer option.

Control and Monitoring Functions

• Automatic voltage regulation (AVR)
• Field current regulation (FCR)
• Field voltage regulation (FVR)
• Power factor and var regulation
• Overexcitation and underexcitation limiting
• Stator current, var, and underfrequency/V/Hz limiting
• Internal and external autotracking
• Trending, oscillography, and sequence-of-events recording

Technical Specifications

• Manufacturer: Basler Electric
• Model / Style: DECS-250-LN2SN1N
• Product family: DECS-250
• Product type: Digital Excitation Control System
• Control power, Style L: 16 to 60 Vdc
• Control power burden: 50 VA or 30 W
• Full-load continuous output current: 15 Adc
• Power input frequency: 50 to 500 Hz
• Generator current sensing: 1 Aac or 5 Aac nominal
• Contact inputs: 16 programmable dry-contact inputs
• Communication: USB, RS-232, RS-485, CAN, expansion port, and Ethernet
• Ethernet protocol for this style: Modbus TCP
• Operating temperature: -40°C to 70°C
• Storage temperature: -40°C to 85°C

Ordering Code: LN2SN1N

• L: 24/48 Vdc control-power style
• N: No power system stabilizer
• 2: Internal/external autotracking
• S: Spring-type terminals
• N: No synchronizer
• 1: 100Base-T Ethernet / Modbus TCP
• N: No second communication protocol option

Integration Notes

Basler supports DECS-250 setup through BESTCOMSPlus software. The family also supports optional expansion through compatible Basler modules. Confirm the installed style code, sensing configuration, field requirements, firmware, and communication requirements before replacement or commissioning.

For installation and commissioning, use the current Basler DECS-250 instruction manual. Basler requires qualified personnel and specifies protective grounding and current-transformer grounding requirements in the manual.

Before Ordering

Confirm the complete DECS-250-LN2SN1N style number rather than matching only the DECS-250 family name. Different DECS-250 style characters identify control-power, tracking, terminal, synchronizer, and communication options.