SPECIFICATIONS
Part No.: IS215VCMIH2CB
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels: 8
Span: 0.3532 to 4.054 V
Product Type: VME Communications Card
Availability: In Stock
Series: Mark VI
Functional Description
IS215VCMIH2CB is a VME Communications Card developed by GE. It is a part of Mark VI control system. It serves as a critical interface for communication between the controller, I/O boards, and the system control network (IONet). Its primary functions include managing data exchange, monitoring power supplies, and providing diagnostic capabilities to ensure system reliability.
Features
- Acts as the communication interface between the controller and the I/O boards, as well as the interface to the IONet, the system control network. The VCMI ensures seamless data transfer and coordination between the controller, I/O modules, and the network, enabling efficient operation of the Mark VI control system.
- Operates as the VME bus master in both the control rack and the I/O rack. As the bus master, it manages data transfers across the VME bus, ensuring efficient communication between all connected boards. Additionally, it assigns and manages IDs for all boards in the rack and their associated terminal boards, ensuring proper identification and addressing of each component.
- The card monitors internal power supply buses to ensure stable operation. It tracks the following voltage levels 5 V, 12 V, 15 V, 28 V.
- The card is equipped with configurable alarm settings for each voltage level. Typically, alarms are set at 3.5% for 5 V, 12 V, and 15 V supplies, and 5.5% for 28 V supplies. These alarms trigger when voltage levels deviate beyond the configured thresholds, enabling early detection of power supply issues.
Diagnostics and Monitoring
- Ground Fault Detection: This feature actively identifies ground faults within the system’s electrical network. Ground faults can indicate insulation failures, unintended current paths, or hardware degradation. Early detection helps prevent equipment damage, ensures personnel safety, and reduces downtime by allowing timely maintenance or isolation of faulty components.
- Over/Under Voltage Monitoring: The card continuously monitors the P125 V DC bus - a critical power supply line in the system—for both overvoltage and undervoltage conditions. Deviations from the normal voltage range can signal issues such as power supply instability, load imbalances, or component faults. This monitoring helps maintain optimal power conditions and protects the integrity of connected control modules.
- Analog Input Monitoring: The module features two differential analog inputs, capable of measuring ±5V DC signals from external sources. These inputs are used to monitor analog parameters from connected equipment or sensors. The differential design enhances noise immunity and signal accuracy, making it ideal for capturing precise readings in electrically noisy industrial environments.
- External Monitor Circuits: The card monitors critical external circuit lines, including:
- P28A (28V DC power supply line)
- PCOM (power common reference)
- These monitoring circuits provide vital feedback on the status and health of external power systems. Abnormalities in voltage levels or line conditions are detected and reported to the control system, enabling protective responses or system alerts.
- Digital Input Monitoring: Multiple digital input channels are included for tracking the logic state (ON/OFF) of connected devices and sensors. These inputs are used to detect:
- Status changes in field equipment
- Fault conditions
- Interlocks or safety limit triggers
- The digital monitoring system ensures that all control and safety-related input signals are captured accurately and acted upon in real time.
Product Attributes
- VME Bus Master: Ensures efficient data transfer and communication across the VME bus.
- IONet Connectivity: Provides a reliable interface to the system control network.
- Configurable Alarms: Allows customization of alarm thresholds for power supply monitoring.
- Comprehensive Diagnostics: Monitors power supplies, ground faults, and external circuits for enhanced system reliability.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS215VCMIH2CB?
It is a VME Communications Card developed by GE under the Mark VI series.
What diagnostic capabilities does the Card offer?
The card provides comprehensive diagnostics, including Monitoring of ground faults and over/under voltage conditions on the P125 V bus, Tracking two differential 5V DC analog inputs, Monitoring external circuits through P28A and PCOM, and Monitoring digital inputs for status and fault detection.
How does the Card interface with the Power Distribution Module (PDM)?
The card interfaces with the PDM through J301. It monitors diagnostic signals from the PDM, including ground faults, voltage irregularities, and external circuit conditions.
