IS215VCMIH2CA - VME Master Bus Controller Board

TECHNICAL SPECIFICATIONS:

Part Number: IS215VCMIH2CA
Manufacturer: General Electric
Series: Mark VI
Product Type: VME Master Bus Controller Board
Hardware Revision: H2CA
Board Architecture: Double-slot VME module
System Interface: VMEbus interface & IONet communication
Processor Architecture: 32-bit RISC microprocessor
Primary Function: VME master controller / I/O communication driver
Diagnostic LEDs: Power, Active, Fault, Status
Board Type: 6U high VME board, 0.787 inch
Form Factor: Standard Mark VI VME rack mount
Operating Temperature: 0°C to +60°C (32°F to +140°F)
Storage Temperature: -40°C to +85°C (-40°F to +185°F)
Relative Humidity: 5% to 95% Non-Condensing
Repair Lead Time: 3 to 5 Business Days
Frame Rate: 10 ms
Availability: In Stock / Repair & Exchange Available
Country of Origin: United States
Manual: GEH-6421H

FUNCTIONAL DESCRIPTION OF IS215VCMIH2CA:

The IS215VCMIH2CA is a VME Master Bus Controller board designed and manufactured by General Electric as part of the Speedtronic Mark VI turbine control system platform. The VCMI is the communication interface between the controller and the I/O boards, and the communication interface to the system control network, known as IONet. VCMI is also the VME bus master in the control and I/O racks, and manages the IDs for all the boards in the rack and their associated terminal boards. Three simplex system configurations with local and remote I/O using the VCMI. Multiple I/O racks can be connected to IONet, each rack with its own VCMI board. To increase data throughput for applications requiring low latency, a second IONet port on the VCMI can be used as a parallel IONet. The first example is a small system where all the I/O is mounted in the VME control rack, so no remote I/O racks are required. Each channel (R, S, T) has its own IONet, and the VCMI has three IONet ports. The second example is a larger system with remote I/O racks. Each IONet supports multiple I/O racks, but only one rack is shown here. All I/O channels (R, S, T) are identical in terms of I/O boards and points.

DIAGNOSTICS:

The internal 5 V, 12 V, 15 V, and 28 V power supply buses are monitored and alarmed. The alarm settings are configurable and usually set at 3.5%, except for the 28 V supplies, which are set at 5.5%. Diagnostic signals from the power distribution module (PDM), connected through J301, are also monitored. These include ground fault and over/under voltage on the P125 V bus, two differential +5 V DC analog inputs, P28A and PCOM for external monitor circuits, digital input monitor circuits, and digital inputs.

CONTROL MODULE:

The control module is available as an integrated control and I/O module, or as a stand-alone control module only. The integrated control and I/O rack can be either a 21-slot or 13-slot VME size. The 13-slot rack can accommodate all the boards for control of a small turbine. The backplane has P1 and P2 connectors for the VME boards. The P1 connectors communicate data across the backplane, and the P2 connectors communicate data between the board and the 37-pin J3 and J4 connectors located directly beneath each board. Cables run from the J3 and J4 connectors to the terminal boards. There can be one control module (simplex) or three triple modular redundant (TMR) control modules. Each of these configurations supports remote I/O over IONet. The simplex control modules can be configured to support up to three independent parallel IONet systems for higher I/O throughput. Multiple communication boards may be used in a control module to increase the IONet throughput.

INTERFACE MODULE:

The interface module houses the I/O boards remote from the control module. The rack, shown in the following figure, is similar to the control module VME rack, but without the controller, interface board VDSK, and cooling fan. Each I/O board occupies one or two slots in the module and has a backplane connection to a pair of 37-pin D connectors mounted on an apron beneath the VME rack. Cables run from the 37-pin connectors to the terminal boards. Most I/O boards can be removed, with power removed, and replaced without disconnecting any signal or power cable. Communication with the module is via a VCMI communication board with a single IONet port, located in the left slot. The module backplane contains a plug wired to slot 1, which is read by the communication board to obtain the identity of the module on the IONet.

WHY BUY FROM WOC

World of Controls is an industry-leading provider of high-reliability OEM replacement parts engineered for mission-critical turbomachinery, governor systems, and heavy industrial controls. Dedicated to preventing unscheduled plant shutdowns, we maintain an extensive stock of UNUSED surplus and precision-REBUILT control boards, I/O modules, and central processing units, all covered by full warranty assurances. To guarantee uncompromised performance, our certified technical team subjects every reconditioned component to exhaustive physical inspections, circuit trace testing, and simulated operational load trials before release. Beyond component delivery, we provide rapid-response bench repair solutions and direct unit exchange options to minimize lead times on essential legacy equipment. Supported by around-the-clock technical support for cross-part identification, stock confirmation, and urgent dispatch, we deliver the hardware and expertise needed to keep your plant online. Contact us today for instant quotes, stock inquiries, or priority international delivery.

FREQUENTLY ASKED QUESTIONS:

What is GE IS215VCMIH2CA?

The GE IS215VCMIH2CA is a 6U VME Master Bus Controller Board (VCMI) for the Speedtronic Mark VI turbine control platform. It functions as the master controller for the VME rack and drives high-speed communications between the controller, I/O boards, and the IONet network.

How does the IS215VCMIH2CA manage communication across multiple racks?

The VCMI manages board IDs and data routing across both local and remote I/O racks over IONet. For high-throughput or low-latency applications, the board can utilize a second IONet port to operate parallel IONet communication channels.

What internal power buses and diagnostic parameters are monitored by the VCMI?

The board monitors internal 5 V, 12 V, 15 V, and 28 V power buses with configurable alarm thresholds. Through connector J301, it also tracks Power Distribution Module (PDM) signals, ground faults, and P125 V over/under-voltage conditions.

What backplane connectors are used to link the VCMI and I/O cards to field wiring?

The VME rack backplane uses P1 connectors for internal bus data communication and P2 connectors to interface with 37-pin D-type connectors (J3 and J4) located below each slot, which connect via cable to field terminal boards.