DS200SVAAG1A | GE Mark V Enhanced Servo Amplifier

Description

Product Core Brief

• Model: DS200SVAAG1A
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Enhanced servo valve amplifier
• Product Type: Enhanced Servo Amplifier (1 channel)
• Key Specs: 0–250 mA output | Adjustable current limit | Current monitor | Removable terminals
• Condition: New Original.

Product Introduction

The DS200SVAAG1A is an enhanced servo valve amplifier board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It converts a ±10 VDC control signal into a 0–200 mA (or up to 250 mA peak) current output with adjustable current limit, diagnostic outputs, and removable terminal blocks.

The “A” revision upgrades the base SVAAG1 with adjustable current limit (10–250 mA), current monitor output (0–10 V = 0–200 mA), removable screw terminals, enhanced ESD protection (±15 kV), and extended temperature range (−40°C to +70°C). Use it to drive servo valves with adjustable current limiting to prevent coil burnout, or to monitor actual output current in real time.

Key Technical Specifications

Key Selling Points & Differentiators

• Adjustable current limit (10–250 mA) – Protect valve coils from burnout. Set limit just above valve’s maximum current.
• Current monitor output – 0–10 V proportional to output current. Connect to PLC or SDCC for closed-loop current control or diagnostics.
• Removable terminal blocks – Original SVAAG1 had fixed terminals. Replace without rewiring entire board.
• Extended temperature range (−40°C to +70°C) – Operates in outdoor cabinets and unheated enclosures.
• Enhanced ESD protection (±15 kV) – Meets IEC Level 4.
• Auto-zero capability – Push-button null offset (optional via jumper).
• QC includes current limit verification – Tested at 50, 100, 150, 200, 250 mA settings.
• 2-year warranty

Frequently Asked Questions (FAQ)

Q: What is the difference between SVAAG1 (standard) and SVAAG1A (enhanced)?

Q: How do I set the current limit?
A: Adjust potentiometer (labeled “I LIMIT”). Turn clockwise to increase limit. Measure with ammeter: short output (momentarily), adjust to desired limit (e.g., 150 mA). Default 200 mA.

Q: What is the current monitor output used for?
A: Connect to SDCC analog input. Read actual valve current. Implement closed-loop current control (PID on current, not position). Or monitor for valve degradation (current spikes indicate stiction).

Q: Can I use the SVAAG1A without external power supply?
A: Not recommended for >100 mA output. Board draws up to 2 A at 24 V (output plus losses). Backplane 24 V typically 1 A max. Use external 24 V, 3 A supply.

Q: What is the minimum load resistance?
A: 15Ω (improved from 20Ω on standard). For 200 mA, voltage drop = 3 V. Remaining 21 V available for cable.

Q: What QC tests are specific to the SVAAG1A?
A: Nine tests:

1. Current limit accuracy: 10–250 mA, error ±5 mA
2. Current monitor: 0–10 V = 0–200 mA, error ±2%
3. Output linearity: ±0.3%
4. Auto-zero: residual offset <0.5 mA
5. Removable terminal torque: 0.55 Nm
6. ESD: ±15 kV contact
7. Temperature: −40°C to +70°C
8. Short-circuit: foldback, recovery
9. Burn-in: 72 hours at +65°C, 200 mA output

Q: What shipping protection?
A: Anti-static bag, ESD foam cradle, double-wall box. Each board ships individually. Removable terminal blocks pre-installed. Spare blocks in separate bag. Potentiometer adjustment tool included. Torque card included. External power supply not included (order separately).

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