GE-IC698CRE040-HN PACSystems RX7i Hot‑Standby Redundant CPU Module (‑HN hardware variant)

Description

Core performance features

‑ Processor: 1.8 GHz Intel Pentium‑M microprocessor. Boolean execution speed: 0.02391 ms per 1000 contacts‑coils, capable of complex floating‑point arithmetic for process regulation algorithms。 ‑ Memory configuration: 64 MB battery‑backed SRAM stores runtime user logic, real‑time process data; 64 MB flash memory stores application program, hardware configuration, symbolic tags and time‑stamped SOE event logs. An on‑board replaceable lithium battery preserves SRAM data and real‑time clock information during rack power loss。 ‑ I/O processing capacity: maximum 32768 discrete I/O bits; up to 32768 analog I/O words. It supports up to 512 program blocks, each block maximum size 128 KB. ‑ Communication interfaces:  Dual independent 10/100 Mbps auto‑negotiation RJ45 Ethernet ports. Supported protocols: SRTP, Modbus TCP, IEC 60870‑5‑104, EGD. Built‑in web server and FTP service, supporting total 16 concurrent web / FTP client connections for remote monitoring and file access. Redundant IP function is available for network‑level fault tolerance.  Three serial ports: RS232 debug port, RS485 port, station‑manager RS232 port. Supports Modbus‑RTU slave, SNP and serial I/O protocols. Firmware upgrade can be completed through serial or Ethernet channel. ‑ Redundancy function: supports HSB hot‑standby redundancy mode. Two CRE040‑HN CPUs keep logic and real‑time data synchronized via RMX016 module. When primary CPU fails, the standby unit will take over control task automatically to guarantee continuous production. ‑ Programming compliance: meets IEC 60870‑5‑104 standard. Supported programming languages: Ladder Diagram, Function Block Diagram, Structured Text, embedded C for advanced custom algorithm development. Supports online program modification without stopping CPU running state. ‑ Self‑diagnosis function: comprehensive hardware health monitoring for CPU core, memory chip status, backup‑battery voltage and VME‑bus communication quality. Time‑stamped fault logs and SOE sequence‑of‑event records can be stored inside flash memory. Low‑battery alarm bit will be triggered before onboard lithium battery fails. ‑ Power consumption: draws 6.8 A @ 5 VDC from VME backplane, +12VDC /‑12VDC minimal consumption, no separate external field‑wired power‑supply terminals on this CPU board。 ‑ Environmental specifications: operating temperature 0‑60 ℃; storage temperature‑40 ~ +85 ℃; humidity 5‑95 % non‑condensing; IP20 protection grade, cabinet‑only installation. ‑ Compatibility note: The‑HN suffix stands for specific hardware revision. CRE040‑HN cannot be directly substituted with ordinary CPE040 non‑redundant CPU in redundancy projects. Firmware revision must match IC698RMX016 and other VME boards installed in the same rack, otherwise synchronization anomaly or partial function loss will occur.

Physical appearance

Standard 6U‑height horizontal plug‑in VME circuit board, inserted into RX7i rack VME slot. ‑ Front metal faceplate: two RJ45 Ethernet sockets, three serial‑port interfaces; multi‑group LED status indicators including CPU OK, RUN, STOP, Output‑Enable, Battery alarm, Ethernet link status, redundancy synchronization status. Equipped with metal ejector latches for convenient insertion and extraction. Part‑number label printed IC698CRE040‑HN. ‑ Rear section: large‑size VME golden‑finger contacts for rack back‑plane power supply and high‑speed VME‑bus data exchange. ‑ No independent sealed metal housing; bare PCB structure with metal front faceplate. On‑board replaceable lithium backup battery for SRAM and RTC data retention. ‑ All external communication connections are finished through front‑panel connectors; there are no field process signal terminals.

On‑site application scenarios

Installed inside power‑plant, petrochemical and heavy‑industry automation cabinets. As core redundant controller for PACSystems RX7i system, it undertakes complex continuous‑process regulation, safety interlock and sequence‑control logic computation. Under redundant configuration, primary‑standby data synchronization guarantees uninterrupted control output upon main CPU hardware failure. Real‑time measuring data, alarm messages and SOE event records are uploaded to HMI and dispatching host via Ethernet and serial channels. When this module fails under single‑CPU non‑redundant running mode, the whole rack will lose control capacity and may trigger unit protective trip. Under complete redundant configuration, the standby CPU will automatically take over control without production interruption. After replacement, download original project configuration file, verify firmware compatibility with RMX016 and other rack internal boards, check VME‑bus communication status of each I/O slot, test redundancy synchronization and automatic switch‑over performance, and confirm onboard backup‑battery voltage before putting into online operation.

Installation & operating notes

‑ Although VME hot‑swap function is theoretically supported under redundant architecture, power‑off replacement is strongly recommended in actual industrial site to avoid scratch and oxidation damage to VME golden‑finger contacts. ‑ Ethernet and serial communication cables must adopt industrial‑grade shielded twisted‑pair, keep physical separation from high‑voltage power cables to restrain electromagnetic interference causing link flapping or data error. ‑ Keep tracking onboard backup lithium‑battery health status. When battery voltage drops below threshold, SRAM runtime data and real‑time clock information will be lost after power‑off. Arrange battery replacement according to site maintenance cycle. ‑ Keep cabinet well‑ventilated. High ambient temperature will accelerate aging of onboard memory chips and electrolytic components. ‑ Do not disassemble PCB board for component‑level repairing. Replace the whole CPU module for permanent hardware damage.

Common field phenomena & troubleshooting

1. All front‑panel indicators stay off after rack power‑on: Check VME back‑plane 5 VDC power supply condition, re‑seat module firmly in slot. If backplane power is normal, onboard power‑circuit damage may occur.
2. One Ethernet link flickering frequently: Inspect industrial shielded cable and connector crimp quality, verify IP address and network parameter setting, eliminate cabinet high‑temperature and dust accumulation impact.
3. Redundancy synchronization failure: Confirm firmware‑version consistency between two CRE040‑HN CPUs and RMX016 module; check sync‑link wiring condition; clean dust and oxidation on VME golden‑finger contacts.
4. Cannot download project configuration: Check Proficy Machine Edition software communication path, confirm whether CPU enters fault‑lock halt state, verify firmware compatibility with other rack boards.
5. SOE / runtime data disappear after power‑cycle: Replace onboard lithium backup battery, re‑download configuration file and verify data‑retention function.
6. Partial VME I/O modules reported offline: Clean dust and oxidation on VME golden‑finger contacts, check back‑plane bus health status, confirm whole‑rack firmware‑version matching.