K-WANG
The PACSystems* RX3i Redundancy CPU can be used to perform real time control of machines, processes, and material handling systems. The CPU communicates with the programmer and HMI devices via a serial port using SNP Slave protocol. It communicates with I/O and smart option modules over a dual backplane bus that provides:
GE IC695CRU320 Redundancy CPU
High-speed PCI backplane for fast throughput of new
advanced I/O.
▪ Serial backplane for easy migration of existing
Series 90*-30 I/O.
Features
▪ Hot standby (HSB) redundancy. Two redundant units
make up a redundancy system. Each unit requires one
Redundancy CPU (IC695CRU320) and a redundancy
Memory Xchange module (IC695RMX128/228) configured
as a redundancy link.
▪ Contains 64 Mbytes of battery-backed user memory and
64 Mbytes of non-volatile flash user memory.
▪ Provides access to bulk memory via reference table %W.
▪ Configurable data and program memory.
▪ Programming in Ladder Diagram, Structured Text,
Function Block Diagram, and C. Refer to PACSystems RX7i
& RX3i CPU Programmer’s Reference Manual, GFK-2950.
▪ Supports auto-located Symbolic Variables that can use
any amount of user memory.
▪ Reference table sizes include 32Kbits for discrete %I and
%Q and up to 32K words each for analog %AI and %AQ.
▪ Supports most Series 90-30 modules and expansion
racks. For a list of supported I/O, Communications,
Motion, and Intelligent modules, refer to the PACSystems
RX3i System Manual, GFK-2314F or later.
▪ Supports up to 512 program blocks. Maximum size for a
block is 128KB.
▪ CPU firmware may be upgraded in the field.
▪ CPU supports firmware upgrades of modules in its
backplane.
▪ Two serial ports: an RS-485 serial port and an RS-232
serial port.
▪ Ethernet communications via the rack-based Ethernet
Interface module (IC695ETM001). For details on Ethernet
capabilities, refer to PACSystems RX7i & RX3i TCP/IP
Ethernet Communications User Manual, GFK-2224.
▪ Time Synchronization to SNTP Time Server on Ethernet
network when used with Ethernet Release 5.0 or later.
▪ Compliant with EU RoHS Directive 2002/95/EC using the
following exemp
Ordering Information
Catalog Number Description
IC695CRU320 RX3i 1GHz Celeron M CPU with 64MB User Memory
IC695ACC302 Smart Auxiliary Battery for Memory Retention
IC693ACC302 Auxiliary Battery for Memory Retention
IC690RBT001 Rechargeable Battery for Memory Retention
Warning – Use only GEIP approved auxillary battery packs listed above. Use of another battery may
present a risk of fire or explosion.
Hot Standby CPU Redundancy Features
For details on the configuration and operation of a Hot Standby CPU redundancy system, refer to the PACSystems
Hot Standby CPU Redundancy User’s Manual, GFK-2308.
▪ Supports single and redundant Ethernet remote I/O LANs through Ethernet Network Interface Unit (ENIU)
modules
▪ Supports simplex and redundantly controlled PROFINET remote IO (requires firmware version 8.00 or later)
▪ Survives any one single point of failure
▪ Bumpless switching
o Synchronized CPUs
o One scan switching
o Transfer data size up to 2Mbytes; selected in CPU hardware configuration and in variable properties
▪ Supports two redundancy communications links
▪ Online repair of failed component
▪ Online programming
▪ Redundancy Memory Xchange Module
o Manual toggle switch for role switching, which transitions control from the active unit to the backup unit
o Redundancy status LEDs
▪ Application-initiated role switching to switch the active unit to backup status
▪ Redundancy status bits and message logging
▪ Memory error checking and correction (ECC) single bit correcting and multiple bit checking
▪ Background diagnostics
HSB Control Strategy
The HSB control strategy has the following characteristics:
▪ Active unit does not automatically switch to primary on resynchronization
▪ Critical control data plus all redundant outputs must be included in the output data transfer
▪ Bumpless switchover from active unit to backup unit
Specifications: CRU320
CPU Performance For CRU320 performance data, refer to Appendix A of the PACSystems CPU Reference
Manual, GFK-2222V or later.
Battery: Memory retention For battery selection, installation and estimated life, refer to the PACSystems RX3i and RX7i
Battery and Energy Pack Manual, GFK-2741
Program storage Up to 64 MB of battery-backed RAM
64 MB of non-volatile flash user memory
Power requirements +3.3 Vdc: 1.0 Amps nominal
+5 Vdc: 1.2 Amps nominal
Operating Temperature 0 to 60°C (32°F to 140°F)
Floating point Yes
Time of Day Clock accuracy Maximum drift of 2 seconds per day
Elapsed Time Clock (internal
timing) accuracy
0.01% maximum
Embedded communications RS-232. RS-485
Serial Protocols supported Modbus RTU Slave, SNP, Serial I/O
Backplane Dual backplane bus support: RX3i PCI and high-speed serial bus
PCI compatibility System designed to be electrically compliant with PCI 2.2 standard
Program blocks Up to 512 program blocks. Maximum size for a block is 128KB.
Memory %I and %Q: 32Kbits for discrete
%AI and %AQ: configurable up to 32Kwords
%W: configurable up to the maximum available user RAM
Symbolic: configurable up to 64 Mbytes
Flash memory endurance
rating
100.000 write/erase cycles minimum
Memory error checking and
correction (ECC)
Single bit correcting and multiple bit checking.
Switchover Time1 Maximum 1 logic scan, minimum 3.133 msec.
Typical Base Sweep Time
(Reference Data Transfer List
Impact)2
3.66 msec: 1K Discrete I/O, 125 Analog I/O and 1K Registers
3.87 msec: 2K Discrete I/O, 250 Analog I/O and 2K Registers
4.30 msec: 4K Discrete I/O, 500 Analog I/O and 4K Registers
5.16 msec: 8K Discrete I/O, 1K Analog I/O and 8K Registers
Maximum amount of data in
transfer list
Up to 2 Mbytes
Number of redundancy links
supported
Up to two IC695RMX128/228 synchronization links are supported.
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