Siemens MXL-IQ control panel

Description

The MXL-IQ Control Panel from Siemens Industry, Inc., is an advanced fire protection and alarm control panel that provides superior fire protection and multiplexed alarm reporting. The MXL-IQ Control Panel can monitor up to 4 analog loops, each containing up to 60 SIEMENS intelligent devices. The MXL-IQ Control Panel can control a wide variety of System outputs, such as:
• Conventional Form C relay contacts
• Solid State outputs
• Supervised outputs to control Alarm Notification Appliances
• Municipal Tie outputs
• Leased Line outputs The MXL-IQ Control Panel can process logical decisions based on the status of initiating devices.
The System can respond with customer-specified sequences of output circuit operation. The System continuously checks all software and hardware for proper operation. It continuously checks all System memory components, control panel electronic hardware, and the System program. A hardwire watchdog circuit is provided to ensure that System programs are functioning properly. If a problem develops with the program or processor, the watchdog circuit places the System into a trouble condition and resets it. To ensure reliable operation, the MXL-IQ System is composed of independent modules, each with its own microprocessor. If the main panel’s central processing unit stops, these modules, operating in default, still annunciate any alarm or trouble through common lines called Any Alarm and Any Trouble. All of the modules communicate with the MXL-IQ Panel through a serial communications System. All modules are continuously supervised for their presence and for proper operation.
Problems are shown on the display to aid in servicing and troubleshooting (See Using the Menu in the OPERATIONS section). The MXL-IQ System is designed so that fire alarm operation has first priority over all other modes of operation. If the System loses battery and commercial power, it automatically goes through an initialization routine when power returns.
Software
The MXL-IQ software was written in a high level language for ease of maintenance. The software incorporates a multitasking operating system that allows the microprocessor to handle many tasks almost simultaneously. This enables the MXL-IQ System to handle communications to all initiating and output option boards and to the annunciator. This also enables the MXL-IQ System to check that everything is running.