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TECHNICAL SPECIFICATIONS:
Part Number: IS230TRLY3EG01
Manufacturer: General Electric
Series: Mark VI
Product Type: Relay Output Terminal Board
Relay Channels: 12
Contact Configuration: Form-C (NO / NC / Common)
Max Contact Rating: 125 VDC @ 0.6 A / 240 VAC @ 5.0 A
Output Protection: Individual Branch Fuses (FU1–FU12)
Redundancy Support: Simplex, Dual, TMR
Interface Connector: Dual 28-Pin D-Type
Terminal Type: Dual High-Density Barrier Terminal Blocks (Screw Terminals)
Diagnostic Supervision: Relay Coil Current Feedback & Output State Readback
Input Power Supply: 24 VDC / 125 VDC Bus Power (Jumper Selectable)
Power Consumption: 6.8 W (Typical) / 10.5 W (Maximum)
Operating Temperature Limits: -30°C to +65°C (-22°F to +149°F)
Storage Temperature Range: -40°C to +85°C (-40°F to +185°F)
Relative Humidity Threshold: 5% to 95% (Non-condensing)
Conformal Coating: Enhanced Industrial Grade Acrylic PCB Coating
Mounting Style: DIN-Rail Mount / Panel Backplate Stand-off
Availability: In Stock
Weight: 1.15 kg (2.53 lbs)
Country of Origin: United States
Manual: GEH-6421H
The IS230TRLY3EG01 is a Relay Output Terminal Board designed and manufactured by General Electric as part of the Speedtronic Mark VI control systems. TRLY3EG01 holds 12 plug-in magnetic relays. The first six relay circuits can be jumper-configured for either dry, Form-C contact outputs or to drive external solenoids. A standard 125 V DC or 115 V AC source, or an optional 24 V DC source, with individual jumper-selectable fuses and on-board suppression can be provided for field solenoid power. The next five relays (7-11) are unpowered isolated Form-C contacts. Output 12 is an isolated Form-C contact, used for special applications such as ignition transformers. In Mark VI systems, TRLY is controlled by the VCCC or VCRC board. Cables with molded plugs connect the terminal board to the VME rack where the I/O boards are mounted. Simplex and TMR systems are supported. Plug JA1 is used on simplex systems, and plugs JR1, JS1, and JT1 are used for TMR systems.
INSTALLATION:
The 12 relay outputs are wired directly to two I/O terminal blocks mounted on the terminal board as shown in the following figure. Each block is held down with two screws and has 24 terminals accepting up to #12 AWG wires. A shield terminal strip attached to chassis ground is located on the left side of each terminal block. Solenoid power for outputs 1-6 is normally plugged into JF1. JF2 can be used to daisy-chain power to other TRLYs. Alternatively, customer power may be wired directly into TB3 when power is not plugged into JF1/JF2. JG1 provides all solenoids, Output 12.
Jumpers JP1-JP6 are removed in the factory and shipped in a plastic bag. Reinstall the appropriate jumper if power to a field solenoid is required. Conduct individual loop energization checks per standard practices, and install the jumpers as required. The fuses should be removed in isolated-contact applications to ensure that suppression leakage is removed from the power bus.
OPERATION:
Relay drivers, fuses, and jumpers are mounted on the relay terminal board. For simplex operation, D-type connectors carry control signals plus monitor feedback voltages between the I/O processors and TRLY through JA1. Relays are driven at the frame rate and have a 3.0 A rating. The rated contact-to- contact voltage is 500 V ac for one minute, and the rated coil-to-contact voltage is 1,500 V ac for one minute. The typical operating time is 10 ms. Relays 1-6 have a 250 V MOV for transient suppression between normally open and the power return terminals. The relay outputs have failsafe features so that when a cable is unplugged, or communication with the associated I/O board or I/O pack is lost, the inputs vote to de-energize the corresponding relays. For TMR applications, relay control signals are fanned into TRLY from the three I/O processors R, S, and T through plugs JR1, JS1, and JT1. These signals are voted, and the result controls the corresponding relay driver. Power for the relay coils comes in from all three I/O processors and is diode-shared.
WHY BUY FROM WOC
WOC maintains an extensive inventory of OEM replacement parts for GE Speedtronic Mark VI control systems, enabling customers to source critical components quickly and minimize equipment downtime. We supply unused and professionally rebuilt boards and provide specialized repair and refurbishment services to restore faulty boards to reliable operating condition, backed by warranty coverage for added confidence. With an experienced technical team available 24/7, we provide responsive support for OEM components, replacements, and automation-related requirements. Whether you need pricing, availability, replacement parts, or technical assistance, our team is ready to provide fast, reliable, and personalized support to keep your control systems operating efficiently.
What is the GE IS230TRLY3EG01?
The GE IS230TRLY3EG01 is a Relay Output Terminal Board that provides 12 sealed electromechanical relay channels to control high-power field devices like solenoids, trip coils, and motor starters based on digital commands from attached I/O packs. It provides flexible contact options and full integration into Mark VI control racks.
Which I/O packs interface with the Relay Output Terminal Board?
The board connects directly to Mark VIe relay output packs, including the IS220PDIOH1A, TRLY3EG01, and IS200TRLY series packs via onboard 28-pin D-type connectors. This interface enables continuous diagnostic communication and real-time command processing between the I/O pack and field wiring.
How does the Relay Output Terminal Board protect field circuits during an overcurrent event?
Each relay channel features a dedicated onboard fuse (FU1–FU12) to protect low-voltage control electronics from field faults. If a field solenoid shorts or draws excessive current, the corresponding channel fuse clears, isolating the fault without affecting remaining output channels or central system power rails.
Where can I get a replacement Relay Output Terminal Board?
World of Controls supplies GE Relay Output Terminal Boards in UNUSED and REBUILT conditions, subject to availability. Contact WOC for current availability, pricing, warranty, and replacement support.
