GE Fanuc DS3826AS1D06AA | Analog Input Board | Fast Ship

Description

Product Introduction

The GE DS3826AS1D06AA is a configurable analog input module for the Speedtronic Mark V turbine control system, providing six isolated channels for monitoring a wide range of process variables. This board mounts directly into the Mark V rack and interfaces with the backplane, converting analog field signals into digital readings for the CPU.

The “AS1D06AA” designation indicates an analog input module with six channels and configurable input types. This board supports 4-20 mA current loops, ±10V voltage signals, and thermocouple inputs, making it suitable for pressure transmitters, position transducers, temperature sensors, and other industrial process signals. It is commonly used in turbine control systems for monitoring steam pressure, valve position, and other critical plant variables.

Key Technical Specifications

Key Selling Points & Differentiators

• Three input types in one board. Supports 4-20 mA, ±10V, and thermocouple inputs—reducing the number of different module types required in a control cabinet.
• Six isolated channels. Channel-to-channel isolation eliminates ground loops and protects the CPU from field wiring faults.
• Configurable per channel. Each channel can be independently configured for any supported input type through software—no hardware jumpers or dip switches.
• Internal 4-20 mA loop power. No external power supply needed for loop-powered transmitters, simplifying wiring and reducing cabinet complexity.
• Integrated cold junction compensation for thermocouple mode. No external reference junctions required when configured for thermocouple input.
• 16-bit resolution. High-resolution readings for precision process monitoring.
• 48-hour burn-in with accuracy verification for all input types. Every unit is tested with precision current sources (4-20 mA), voltage sources (±10V), and millivolt sources (TC). Accuracy verified at multiple points across the full range.
• 18-month warranty covering accuracy and channel integrity for all input types. If any channel fails to meet accuracy spec in any mode, we replace the board.

Frequently Asked Questions (FAQ)

Q: What is the difference between the DS3826AS1D06AA and the DS3820T1MC?

A: The DS3826AS1D06AA is a general-purpose analog input module supporting 4-20 mA, ±10V, and thermocouple inputs with 6 channels. The DS3820T1MC is a dedicated temperature input module supporting thermocouples and RTDs with 8 channels. The DS3826AS1D06AA is more flexible for process variables (pressure, flow, level), while the T1MC is optimized for temperature sensors.

Q: What input types does the DS3826AS1D06AA support?

A: The board supports three input types: 4-20 mA (current loops), ±10V (voltage signals), and thermocouples (J, K, T types). Each of the 6 channels can be independently configured for any of these types through the Mark V software.

Q: Can I use this board with 4-20 mA pressure transmitters?

A: Yes—the board supports 4-20 mA inputs with internal 24V loop power. Connect the two-wire transmitter directly to the input terminals—no external power supply needed. The board’s 250Ω burden resistor converts the current to a voltage for measurement.

Q: Can I use this board with ±10V position transducers?

A: Yes—the board supports ±10V voltage inputs with >10 MΩ input impedance. Connect the transducer’s signal output directly to the input terminals. The board measures the voltage with 16-bit resolution and scales it to engineering units in the CPU.

Q: What thermocouple types does this board support?

A: The DS3826AS1D06AA supports J, K, and T thermocouples. It does not support E, R, S, B, or N types. For other thermocouple types, use a dedicated STBA, STBB, or STCA module.

Q: Is this a direct replacement for the DS3820AS1D06AA?

A: The DS3826AS1D06AA is a newer revision. The board is mechanically and electrically compatible with the earlier DS3820AS1D06AA—same form factor, same DIN connector, same pinout, same field wiring. The newer revision includes updated components and improved accuracy. Check your system’s configuration to ensure compatibility—contact us if you need help.

Q: Does the board have individual channel isolation?

A: Yes—each of the 6 channels has 2500V isolation from the backplane and from other channels. This allows the board to handle field wiring faults, ground loops, and signal noise without affecting the CPU or other channels.

Q: What is the update rate of the board?

A: The board scans all 6 channels at 10 Hz (100ms per full scan) regardless of input type. Each channel is sampled and converted every 100ms. This update rate is sufficient for most process monitoring applications.

Q: Does the DS3826AS1D06AA have conformal coating?

A: Not in the standard version. If you need conformal coating, a gold-plated terminal block, or extended temperature range, you would need a variant such as DS3826AS1D06AA1A1A. These variants are very rare—contact us for availability.

Q: What is the warranty on this board?

A: 18 months from shipment, covering accuracy, channel integrity, and loop power functionality. If the board fails to meet accuracy spec or the loop power supply fails, we replace it. The warranty does not cover physical damage or miswiring.

Q: Do you have many of these boards in stock?

A: We typically have 5-8 units of the DS3826AS1D06AA in stock. If you need larger quantities, contact us directly to confirm availability. This board is moderately popular for retrofit and maintenance applications.

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