Description
Honeywell 51304518-100
Technical Specifications
- Processor Core: Proprietary 32-bit industrial RISC processor
- Onboard RAM: Static RAM with battery backup
- Onboard Non-volatile Memory: Flash memory for firmware storage
- Internal Bus: APM high speed parallel local bus
- Power Supply: 5 VDC, 12 VDC from APM rack backplane
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: -40 °C to +85 °C
- Relative Humidity: 5 % to 95 % non-condensing
- Form Factor: Plug-in APM rack daughter card
- Hot Swap Support: Not supported
Functional Features Independent execution of batch sequential function chart logic and timer blocks. Battery backed RAM preserves sequence state and setpoint value during short power interruption. Hardware watchdog timer resets auxiliary processor if logic execution stalls. Internal bus parity check detects communication error between APM main CPU and APM auxiliary processor. Front panel LED indicates power, bus communication and watchdog fault status. Diagnostic register uploads internal fault information to APM system alarm log.
Application Scenarios Continuous chemical batch process sequential control logic offload DCS complex timer and delay logic processing APM controller capacity expansion for large sequence control project TDC3000 APM rack spare replacement for batch plant DCS
Performance Parameters
- Auxiliary logic scan cycle: Configurable from 20 ms to 200 ms
- Battery backup hold time: Minimum 72 hours under room temperature
- Bus parity error detection latency: Single bus cycle
- Watchdog timeout period: 500 ms fixed
- Logic memory capacity supports hundreds of sequence steps
Material Composition Multilayer FR4 PCB, 32-bit RISC processor IC, static RAM chips, flash memory chips, lithium backup battery assembly, bus buffer logic IC, decoupling tantalum and ceramic capacitors, gold plated board-to-board connector, black flame retardant plastic front panel.
Structural Features Plug-in daughter card form factor installed inside APM controller chassis. Front panel with LED indicator and extraction handle. Rear gold edge connector mates with APM motherboard local bus socket. Internal metal shielding cover reduces EMI interference to memory and processor circuit. Anti-keying notch prevents reversed insertion. Battery compartment is sealed to avoid electrolyte leakage contamination.
Working Principle APM main CPU transmits sequence logic command and setpoint data over internal parallel bus to auxiliary processor module. Auxiliary processor executes batch step transition, timer accumulation and interlock condition judgment independently. Sequence status and calculated result are sent back to main CPU. If bus parity error or watchdog timeout occurs, fault flag is asserted and auxiliary processor enters safe idle state. Backup battery maintains RAM state when rack main power fails.
Installation Requirements APM rack main power must be fully de-energized before module installation or replacement. Align board orientation mark and insert fully into motherboard socket. Confirm APM firmware version supports this auxiliary processor module. After power restoration, download sequence logic configuration to auxiliary processor. Check battery voltage status in APM diagnostic menu periodically.
Usage Notes This module does not support hot swap operation. Power removal is mandatory. Do not remove backup battery while module is powered. Battery has fixed service life and requires scheduled replacement. Do not modify onboard firmware or erase flash memory manually. Static protection is mandatory during handling.
