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SPECIFICATIONS:
Part Number: IC3600VANB1D1C
Manufacturer: General Electric
Series: Mark I & II
Function: Annunciator Master Card for turbine control systems
Input/Output Voltage: 24V DC
Power Consumption: Less than 5W
Operating Temperature: -20°C to +60°C
Storage Temperature: -40°C to +70°C
Form Factor: 1U rack-mountable
Weight: 1 kg
Availability: In Stock
Product of Origin: U.S.A
FUNCTIONAL DESCRIPTION:
IC3600VANB1D1C is an Annunciator Master Card manufactured and designed by General Electric as part of the Mark I & II Series used in gas turbine control systems. The Annunciator Master Card is a critical component used in industrial gas and steam turbine control systems to monitor, detect, and report abnormal operating conditions. These cards are typically part of the turbine’s protective and alarm management architecture, especially in legacy systems like GE’s Speedtronic Mark I and Mark II series.
By processing multiple digital and logic-level inputs simultaneously, the card ensures that operators are notified of critical conditions such as over-speed, over-temperature, low lube oil pressure, flame failure, and more. These alarms can be configured for different types of operator responses—some requiring manual acknowledgment, while others may automatically trigger turbine trips or shutdown sequences.
OPERATION:
The Annunciator Master Card constantly scans its input channels for changes in status coming from field devices installed throughout the turbine system. Each input channel represents a particular alarm point—for example, high exhaust temperature, low lube oil pressure, flame failure, or overspeed conditions. When a fault or abnormal condition is detected, the card activates the corresponding visual indicator, such as a lamp or LED, and may trigger an audible device like a buzzer or horn to draw the operator’s attention. Depending on the system’s configuration, the alarm can be latched—meaning it stays active even if the condition clears—until the operator manually acknowledges it.
INSTALLATION:
The card is typically installed in a designated slot on a control panel rack, such as a Eurocard-style enclosure or DIN rail system, depending on the model and control architecture. It should be firmly seated in the backplane connector to ensure proper contact with system power and signal lines. The next step involves wiring the input terminals to various field devices that provide alarm signals—these may be dry contacts, TTL logic signals, or 24V DC lines, depending on system design. Output terminals should be connected to the appropriate visual indicators, alarm horns, or relay circuits.
WOC maintains the largest inventory of Replacement Parts for GE Speedtronic Turbine Control Systems. Additionally, we offer warranty-backed unused and rebuilt boards as well as board repairs for your damaged ones. For your OEM needs, our team of professionals is available around the clock. We at WOC are happy to help you with any needs you may have in terms of automation. Please contact our team by phone or email for pricing and availability on any components and repairs.
What is the operating voltage range for the Annunciator Master Card?
The Annunciator Master Card typically operates on a 24V DC power supply. The accepted voltage range is between 20V and 30V DC to account for power supply fluctuations. This voltage range ensures stable operation in industrial environments, where power quality can vary.
What types of alarm latching modes are supported?
The Annunciator Master Card supports various alarm latching modes, including manual latching and automatic latching. In manual latching mode, alarms remain active until they are acknowledged by the operator, even if the fault condition clears. Automatic latching, on the other hand, resets the alarm once the fault is resolved, though a reset command may still be required to clear the alarm state from the operator’s panel.
What communication protocols are supported by the Annunciator Master Card?
In modern implementations, the Annunciator Master Card may support several communication protocols for integration with a centralized control system. These include Modbus RTU (for serial communication), Ethernet/IP, and Profibus. These communication interfaces allow for alarm status and history to be transmitted to a DCS (Distributed Control System) or SCADA system, enabling remote monitoring, diagnostics, and fault logging.
