IS2020DRLYH1AA | GE DRLY Relay Output Module | Original Packaging

Description

Product Introduction

The GE IS2020DRLYH1AA is a VMEbus digital relay output board from the Mark VIe Speedtronic series, purpose-built for high-density, isolated relay control in turbine applications. This board provides dry contact relay outputs for controlling field devices such as solenoid valves, motor starters, alarms, and annunciators—critical for turbine sequencing, protection, and operator indication. The “AA” suffix indicates a conformal coated board with enhanced moisture and contaminant resistance for harsh environments, combined with the H1A revision features.

What sets the DRLYH1AA revision apart is its 32-channel capacity with fully isolated form A (SPST) relay contacts, status feedback monitoring, comprehensive protection features, enhanced contact current rating, and the acrylic conformal coating that protects relay driver and monitoring circuitry from humidity, salt spray, and airborne particulates. Each relay is rated for 250 VAC/3 A or 30 VDC/3 A, making them suitable for direct control of a wide range of field devices. The board includes coil status monitoring to verify that the commanded output state was achieved, diagnostic read-back for rapid troubleshooting, and contact life tracking. For system integrators requiring high-density, reliable relay output capability with enhanced diagnostics and environmental protection in demanding installations, this board is the direct OEM solution.

Key Technical Specifications

Key Selling Points & Differentiators

• Conformal Coated for Harsh Environments: The “AA” suffix provides acrylic coating that protects relay driver and monitoring circuitry against humidity, salt spray, and airborne contaminants—ideal for offshore platforms, coastal plants, and high-humidity installations.
• Highest Channel Density: 32 relay outputs on a single VME slot—maximum density for space-constrained applications.
• Enhanced Current Rating: 3 A contact rating vs. standard 2 A—supports direct control of larger field devices.
• Form A Contacts: Normally open contacts with status monitoring—flexible for a wide range of control applications.
• Full Optical Isolation: 2,500 VDC isolation between the backplane and field contacts—protects the control system from field wiring faults.
• Contact Life Tracking: Estimated remaining life per channel—enables proactive replacement planning.
• Status Monitoring: Per-channel coil status read-back verifies the commanded output state—critical for diagnostic and safety applications.
• Live Test Verified: Every board undergoes a 48-hour burn-in with all 32 channels cycled under rated load. We log contact resistance, response time, status monitoring accuracy, and life tracking algorithms. Coated boards are visually inspected for complete coverage and absence of bubbles.
• 90-Day Warranty: Covers functional defects. If it fails under normal operating conditions, we replace it. No restocking fee for verified returns.
• OEM Traceability: All units come from audited surplus channels with original GE anti-static bags and serialized labels. No clones, no pull-and-refurbish from unknown sources.
• Configuration Backup Service (Free): Upon request, we extract and archive your existing board’s firmware version and configuration before shipment.

Frequently Asked Questions (FAQ)

Q: What does the “AA” suffix mean on IS2020DRLYH1AA?

A: The “AA” indicates conformal coating combined with the H1A revision. Specifically, it means the board has an acrylic conformal coating (0.02–0.05 mm) applied to the entire PCB assembly for moisture and contaminant protection, along with all H1A features (32 channels, 3 A contacts, contact life tracking). Electrically and functionally they are identical in terms of relay output capability. The coating adds protection; the H1A features provide high-density, high-current relay capability.

Q: What is the difference between IS2020DRLYH1A and IS2020DRLYH1AA?

A: The H1A is non-coated; the H1AA has conformal coating. The coating protects against humidity, salt fog, and chemical vapors. If your cabinet is in a coastal area, offshore platform, or high-humidity environment, the AA variant is strongly recommended. In a clean, climate-controlled room, the H1A is sufficient and costs less. If your existing board is coated, you must replace it with a coated board (AA) because the uncoated version will fail faster in that environment.

Q: Does the conformal coating affect relay performance, contact life tracking, or diagnostics?

A: No. The coating is applied after functional testing, so it does not affect the electrical characteristics of the relay driver or monitoring circuits. Contact life tracking accuracy, status monitoring, diagnostics, and contact rating are identical to the non-coated H1A. The coating only provides environmental protection.

Q: What is the difference between IS2020DRLYH1AA and IS200WROBH1A?

A: The DRLYH1AA has 32 channels vs. 16 channels on WROB, higher current rating (3 A vs. 2 A), form A (SPST) vs. form C (SPDT) contacts, includes contact life tracking, and conformal coating. Choose DRLYH1AA for maximum density, higher current applications, and environmental protection. Choose WROBH1A for form C contacts (NO and NC) or when fewer channels are sufficient.

Q: What is a form A relay and why is it useful?

A: Form A (SPST) relays provide normally open (NO) contacts that close when energized. This configuration is commonly used for energize-to-run applications where the relay must be energized to activate the field device. The DRLYH1AA provides 32 form A relays with status monitoring and contact life tracking.

Q: What is the contact life tracking feature?

A: The DRLYH1AA tracks the number of cycles (operations) for each relay and estimates the remaining contact life based on the contact current rating. This allows you to plan replacement during scheduled maintenance rather than experiencing unexpected relay failure. Contact life tracking is configurable based on actual load conditions.

Q: Can I use this board to directly control solenoid valves?

A: Yes—with a caveat. The relays are rated for 3 A at 30 VDC or 3 A at 250 VAC. For solenoid valves within this current rating, direct control is possible. For larger solenoids or inductive loads, we recommend using an interposing relay or contactor to protect the board from back-EMF and inrush current. Always install a suppression diode across DC coils or an RC snubber across AC coils to protect the relay contacts.

Q: Is this board hot-swappable?

A: No. The Mark VIe VME backplane does not support live insertion. You must de-energize the rack, ground yourself, and wait 30 seconds for bulk capacitors to discharge. We’ve seen field crews pull a DRLY while the cabinet was still powered—it damaged the relay driver circuits and the backplane connector. Don’t risk it.

Q: What is the typical lead time for this part?

A: We stock these on the shelf—usually ship within 24 hours of order placement and payment confirmation. For international orders, add 3–5 days for customs. If you need expedited (overnight air), we can do that, but you’ll need to coordinate with our logistics team for the cut-off time.

Q: Does this board work with the newer Mark VIeS (SIL-rated) cabinets?

A: To be direct: no. The IS2020DRLYH1AA is not SIL-certified. It’s meant for standard Mark VIe industrial control. The SIL-rated systems use the IS220DRLY (with additional redundancy, diagnostic coverage, and separate safety shutdown path). Mixing them violates your site’s safety integrity level. If you’re in a SIL environment, we can source the correct variant but it will have a different model number.

Q: What’s your return policy if this doesn’t solve my relay output issue?

A: If the board is electrically functional (passes our QC test) but doesn’t correct your fault, we’ll accept a return within 30 days provided the board shows no physical damage and the connectors are intact. We do charge a 15% restocking fee if the fault was due to field wiring issues, configuration errors, or toolkit compatibility problems. We’ll work with you over the phone or email to diagnose the problem before we ship—our goal is to get you running, not to ship boxes back and forth.

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