The Schneider Electric 140CPU67160S, also cataloged as the 140CPU67160S Unity Hot Standby Processor, operates as a dedicated hardware component for high-availability process control and fail-safe state execution within Modicon Quantum automation platform networks. The module provides simultaneous execution of primary control logic and synchronized hardware redundancy across local backplane cards and remote I/O stations.
| Parameter | Specification |
|---|---|
| Model | 140CPU67160S |
| Brand | Schneider Electric |
| Origin | France |
| Weight | 1.391 kg (3.067 lb) packaged / 0.41 kg (0.90 lb) net |
| Dimensions | 110 x 190 x 325 mm (Package Height x Width x Length) |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 12.5 W (2500 mA @ 5 VDC) bus current requirement |
| Clock Frequency | 266 MHz |
| Internal RAM | 1024 KB (512 KB allocated for data) |
| Expandable Memory | 7168 KB program / 8 MB file storage via PCMCIA card |
| Execution Time | 0.105-0.15 us Boolean, 0.09-0.12 us word |
| System Overhead | 1.5 ms master task |
| Remote I/O Capacity | 31,744 discrete inputs / outputs; 1984 analog inputs / outputs |
| Remote I/O Scaling | Up to 31 remote stations (1 remote drop minimum) |
| Integrated Interfaces | 1 x Ethernet TCP/IP Hot Standby, 1 x Modbus Plus, 1 x Modbus RS232/485, 1 x USB |
| Diagnostic Display | LCD (2 lines of 16 characters) with activity/collision LEDs |
| Backup Battery | 3 VDC Lithium, 1200 Ah capacity, 10-year service life |
The hardware configuration is engineered to conform to stringent high-reliability safety control (SIS) criteria, achieving a verified TÜV Rheinland SIL3 certification. Operating via a triple modular redundancy (TMR) 2oo3 internal architecture or a dedicated dual-processor Hot Standby topology, the unit enforces immediate fail-safe state execution upon detecting critical system faults. Synchronized memory transfers between the active and standby processors are managed directly through the integrated 140NOE77111 Ethernet TCP/IP link, keeping the redundant memory maps identical within a 1.5 ms master task constraint. Local discrete and analog I/O expansion is restricted in Hot Standby configurations to prevent deterministic bus arbitration lag during a processor switchover.
Q: How does the processor handle synchronization of memory files during a Hot Standby switchover?
A: The main logic card continuously replicates the 512 KB data RAM and active variables to the backup controller via the dedicated 140NOE77111 multimode Ethernet link. If the primary processor loses power or drops off the backplane, the secondary unit assumes control within one master task cycle without dropping remote I/O connection states.
Q: What are the application memory structure limitations imposed when utilizing an external PCMCIA card?
A: The internal logic supports 1 cyclic/periodic master task. Inserting an approved PCMCIA memory card expands the program capacity up to 7168 KB and expands file storage up to 8 MB, but Boolean execution time shifts to a maximum of 0.15 us per instruction due to the peripheral card bus cycles.
Q: Can the backup lithium battery be replaced while the Quantum safety processor is running?
A: Yes, the 3 VDC lithium battery (990XCP98000) can be hot-swapped while the module is powered by the rack power supply. Replacing the battery under power prevents the volatile internal RAM from losing its program configuration and calibration constants.
Insert the processor into the designated slots of a Modicon Quantum 10, 12, or 16-slot backplane, ensuring the locking clips latch completely onto the structural chassis rails. Secure all terminal connections and verify that the key switch memory port is set to the correct on/off operational position. The ambient installation space inside the panel must not exceed the 0 to 60 deg C threshold, and a minimum clearance of 50 mm must be maintained on all sides of the rack to allow convective heat dissipation.
The Modbus Plus network requires proper SUB-D 9 female connection wiring, while the redundant Ethernet links require standard Category 6 shielded RJ45 interfaces. Route all digital communication cables away from high-current AC busbars, motor starters, and frequency converters to mitigate signal corruption. Establish a single, low-resistance connection between the chassis grounding strip and the master plant instrument ground matrix to ensure optimum electromagnetic shielding.
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