Technical Specifications

FAQ

1. What are the GE DS215DMCBG1AZZ03A and DS200DMCBG1AKG?

The GE DS215DMCBG1AZZ03A and DS200DMCBG1AKG are DMCB processor and communication control boards used in applicable GE Mark V, IOS+ and IEI control systems. The board performs important control-processing, power-management and communication functions within the control architecture. Depending on the system configuration, it can interface with operator keyboards and displays, DLAN networks, optional DLAN+ communication equipment, Genius LAN controllers, RS-232C interfaces and I/O expansion hardware. Because the DMCB handles several types of processing and data exchange, its condition can directly affect system communication, operator interaction and I/O processing. A serious board failure may therefore cause multiple related functions to become abnormal at the same time.

2. What are the main processors on the DS200DMCBG1AKG used for?

The DS200DMCBG1AKG uses multiple processors to handle different system functions. The main processor is an Intel 80C186 operating at approximately 33 MHz and is responsible for core control processing and data handling. An 80C196 processor operating at approximately 15.667 MHz is used for communication-related processing. Another 80C196 processor operating at approximately 11.059 MHz is associated with operator keyboard and display functions. This multi-processor architecture separates control processing, communication and operator-interface tasks, allowing different functions to operate independently. As a result, a problem affecting one function does not necessarily mean that every processing section of the board has failed. Troubleshooting should therefore be based on the specific symptoms and system diagnostics rather than assuming a complete board failure.

3. What communication interfaces are supported by the DS215DMCBG1AZZ03A?

The DMCB control board supports several communication methods used within GE control systems, including Drive LAN (DLAN), DLAN+ and Genius LAN, as well as an RS-232C serial interface. DLAN is used for data exchange between applicable control equipment, while DLAN+ provides an optional ARCNET-based communication method. Genius LAN can provide additional data communication through the appropriate controller. The RS-232C interface can be used for specific serial communication and equipment connections. The actual communication configuration depends on the particular control cabinet and application, so not every interface will necessarily be active in every installation. Before replacing the DS200DMCBG1AKG, technicians should identify the communication architecture and associated interfaces used by the original system.

4. What are common symptoms of a DS200DMCBG1AKG failure?

A DMCB failure can result in several different system symptoms. These may include failure during system initialization, abnormal operator-interface operation, communication loss, incorrect I/O data, loss of communication with associated modules or persistent system alarms. If the communication-processing section is affected, several connected modules may report communication errors simultaneously. If the main processor or control-processing section is affected, broader system operation problems may occur. However, unstable power supplies, poor connector contact, damaged communication cables and faulty peripheral I/O modules can produce similar symptoms. For this reason, the DMCB should not be considered defective solely because a system alarm appears. Power, connectors, communication paths and associated modules should be checked first before determining whether the control board requires replacement.

5. How should communication faults on the DS215DMCBG1AZZ03A be troubleshot?

Communication troubleshooting should begin after the control system has been placed in an appropriate maintenance condition according to site safety procedures. Verify that the DMCB is receiving stable power and confirm that all board connectors are fully seated and free from looseness, oxidation, contamination or physical damage. Next, inspect the DLAN, DLAN+, Genius LAN or RS-232C communication paths according to the actual system configuration. If only one communication interface is affected, the corresponding cable and interface hardware should receive particular attention. If several communication interfaces fail simultaneously, the board power supply, processor status and common communication paths should be investigated. System diagnostic information should also be reviewed to determine whether the fault is isolated to one module or affects a wider communication network. If the external connections and peripheral equipment are confirmed to be normal, further testing of the DMCB communication circuitry and processors may be required.

6. What are the jumpers on the DS200DMCBG1AKG used for?

The DS200DMCBG1AKG includes multiple jumpers that can be used for specific hardware configuration and operating-parameter settings. Depending on the application, jumper positions may determine certain board operating conditions and allow the hardware to match the requirements of a particular control system. Jumper definitions can vary between different board versions, so their functions should not be determined only by physical appearance. Before replacing the board, technicians should record the jumper positions on the original unit and reproduce the required configuration on the replacement board. Jumpers should not be changed without a confirmed technical requirement because an incorrect setting may prevent proper system recognition, cause communication problems or disable certain board functions. The configuration should be verified as part of the replacement and commissioning process.

7. What information should be confirmed before replacing the DS215DMCBG1AZZ03A?

Before replacing the DMCB, technicians should first confirm that the fault is actually associated with the control board. The power supply, communication cables, connectors, operator interface and associated I/O modules should be checked, and system diagnostics should be reviewed to determine the fault area. Once replacement is considered necessary, the complete model and revision information should be recorded, including the relationship between DS215DMCBG1AZZ03A and DS200DMCBG1AKG. Hardware revision, firmware and board configuration should also be verified. The original jumper positions and connector arrangement should be documented before removing the existing board. For older GE control systems, boards with similar DMCB designations may have different hardware or functional configurations. Therefore, compatibility should be confirmed using the complete identification and system requirements rather than relying only on the general board type.

8. What commissioning checks are required after replacing the DS200DMCBG1AKG?

After replacing the DS200DMCBG1AKG, the complete control system should undergo a structured functional check. First confirm that the replacement board model, hardware revision, firmware and jumper configuration match the requirements of the original system. Check all power, communication, I/O and operator-interface connections before restoring normal operation. After startup, verify that the DMCB initializes correctly and that the control system recognizes the associated modules. Depending on the installation, DLAN, DLAN+, Genius LAN and RS-232C communication functions should be tested to confirm stable data transmission. Operator keyboard and display functions should also be checked, followed by verification of I/O expansion signals and output commands where applicable. If the original problem involved intermittent communication, the system should be monitored during extended operation to confirm communication stability. Finally, review system diagnostics and alarm records to ensure that no persistent processor, communication or I/O faults remain before returning the equipment to normal service.