GE IS200DAMDG1A | Mark VIe Analog Output Module In Stock

Description

Product Introduction

The GE IS200DAMDG1A is a Mark VIe series analog output module designed for demanding actuator and valve control applications requiring high-drive current outputs. This I/O pack delivers 8 individually isolated 4-20 mA output channels with enhanced load drive capability, making it suitable for installations with long cable runs or high-impedance field devices. It serves as a higher-drive alternative to the DAMA series for critical control loops.

What distinguishes the DAMDG1A from other DAMA variants is its combination of channel isolation and high load drive capability. Each output channel is fully isolated, eliminating ground loops and common-mode noise issues in complex grounding schemes. The G1A revision provides 850 Ω load drive capability, supporting cable runs up to 500+ meters with standard positioners. For plants with challenging grounding conditions and long field wiring, the DAMDG1A provides both the isolation and drive strength needed for reliable turbine control.

Key Technical Specifications

Key Selling Points & Differentiators

• 850 Ω load drive capability – supports cable runs up to 500+ meters with standard positioners. Critical for large turbine installations with distributed field devices.
• Per-channel isolation – eliminates ground loops and common-mode noise issues. Essential for plants with complex grounding or high-EMI environments.
• 8 high-density outputs – reduces cabinet space by 50% compared to older modules. Cuts I/O rack count and simplifies wiring.
• 14-bit resolution with ±0.1% accuracy – provides precise control for demanding actuator and valve applications.
• Rigorous 48-hour burn-in – each unit runs with all 8 channels loaded at 75% span. We test each channel against a calibrated reference resistor and verify load drive to 850 Ω.
• 3-year warranty on hardware – backed by our in-house repair depot with average 48-hour turnaround. Dedicated DAMDG1A swap-pool ensures rapid replacement.

Frequently Asked Questions (FAQ)

Can I hot-swap this IS200DAMDG1A into a running Mark VIe system?

We strongly advise against it. The DAMDG1A series has shown unpredictable behavior when inserted into a powered backplane, and the higher isolation circuitry makes it particularly sensitive. Schedule a controlled outage, de-energize the rack, and swap it during planned maintenance.

What is the difference between the IS200DAMAG1A and the IS200DAMDG1A?

The DAMAG1A is a standard 4-20 mA output with 750 Ω load drive. The DAMDG1A provides higher load drive (850 Ω) and per-channel isolation. Use the DAMDG1A for long cable runs or challenging grounding conditions. Use the DAMAG1A for standard applications where isolation and extended drive are not required.

What is the difference between the IS200DAMBG1A and the IS200DAMDG1A?

The DAMBG1A provides both current and voltage outputs with basic isolation. The DAMDG1A is current-only (4-20 mA) with 850 Ω load drive and per-channel isolation. The DAMDG1A is the better choice for high-drive current applications requiring full channel isolation.

What is the maximum cable length with the 850 Ω load capability?

With 18 AWG shielded cable (approximately 0.024 Ω/meter) and a typical 250 Ω positioner input, you can run up to approximately 500 meters (1,640 feet) and still stay within the 850 Ω limit. Total loop resistance = cable (both conductors) + positioner + any series resistors. For 500 meters, cable resistance is roughly 24 Ω total, so the loop would be 250 Ω + 24 Ω = 274 Ω, well within the 850 Ω limit. Send us your loop specs for confirmation.

How does the per-channel isolation help in practice?

In plants with multiple grounding points, ground loops can cause 4-20 mA signals to have noise or offset errors that affect valve positioning. The DAMDG1A’s full channel-to-channel isolation breaks these loops, eliminating noise and preventing offset shifts. We have seen this resolve persistent valve hunting issues that troubleshooting could not otherwise identify.

How do I verify this is a genuine GE module?

We source exclusively from GE-authorized liquidations. Our verification includes OEM packaging inspection, serial number cross-check against GE records, and PCB inspection for GE-specific markings. We test the isolation resistance (>10 MΩ) and load drive to 850 Ω. We provide PCB photographs upon request.

Will I lose my existing calibration data when I replace the module?

Yes – calibration constants reside in the module’s EEPROM. You will need to recalibrate each output channel. Plan for 2-3 hours of commissioning time. We can pre-load your calibration constants if you send us your old module’s data file from ToolboxST.

What is the expected lifespan of this unit?

We see MTBF around 100,000 hours for the DAMDG1A. The isolation circuitry adds some complexity. Recalibration every 12 months is essential.

What happens if the module fails within the warranty period?

We cross-ship a tested replacement from our dedicated DAMDG1A swap-pool the same business day. You return the failed unit within 15 days. Our repair depot has an average 48-hour turnaround. No restocking fees. You receive a DAMDG1A replacement.

Which termination board should I use with this module?

The IS200DAMDG1A mates with GE’s TS200DTD1 or TS200DTD2 termination boards. Do not use DTA-series boards (standard current) – they are not designed for this module’s isolation and drive configuration. Pin assignments differ. Double-check ribbon cable orientation; pin 1 has a red stripe. We include a wiring diagram PDF with every order.

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