Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Processor Clock | 266 MHz |
| Internal Memory | 1024 kB, expandable via PCMCIA card |
| Ethernet | 10/100 Mbps, multimode fiber ST connector |
| Hot Standby Sync | Dedicated fiber synchronization link |
| Programming Software | Unity Pro XL, IEC 61131-3 (LD, FBD, ST, SFC, IL) + LL984 |
| Onboard Interfaces | USB, Modbus Plus, RS232 Modbus |
| Max I/O Capacity | 31744 DI / 31744 DO remote discrete; 1984 AI / 1984 AO remote analog |
| Supported Remote I/O | S908, Quantum Ethernet RIO, X80 Ethernet RIO |
| Coating | Conformal coated (C suffix, for harsh humid / corrosive cabinet environments) |
| Supply | 5 VDC from Quantum backplane |
| Power Consumption | ~4.5 W |
| Operating Temperature | 0 °C to +60 °C |
| Weight | 1.18 kg |
| Battery | Lithium backup battery for retention of RAM and clock |
Product Introduction
The Schneider 140CPU67160C is a conformal-coated Hot Standby Unity processor for the Modicon Quantum platform. It is built for redundant control where seamless bumpless transfer between primary and standby CPU is required for critical process plants. The “C” suffix differentiates it from standard 140CPU67160 with protective conformal coating, suitable for corrosive, high-humidity cabinet environments. It uses fiber for both Ethernet and standby sync link to reduce EMI interference. Local I/O is not permitted in Hot Standby configuration; all I/O must be remote RIO.
140CPU67160C
140CPU67160C
140CPU67160C
Application Scenarios & Field Experience
Many legacy Quantum redundant systems suffer from confusion between coated and non-coated CPU variants. Using non-coated CPUs in corrosive cabinet environments leads to early PCB corrosion and unexpected standby failure. This coated variant addresses that for coastal, chemical, pulp and paper sites.
- Oil & gas process units: Redundant DCS/PLC control for separators, compressor auxiliary systems.
- Pulp & paper mills: Continuous digester and bleaching line sequence control.
- Power plant BOP: Boiler feedwater, fuel gas and auxiliary turbine control.
- Water & wastewater large treatment plants: High availability pump and chemical dosing control.
In my experience, a coastal chemical plant had a 140CPU67160C standby unit fail due to battery depletion and PCB trace corrosion. The team swapped the spare coated CPU, loaded the Unity Pro application, synchronized the hot standby fiber link, and verified bumpless switchover test. The process remained online, and they scheduled a full battery replacement for the primary unit as a preventive task.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Origin Inspection: Check OEM label, serial number, conformal coating integrity, backplane edge connector, fiber ST ports, USB and MB+ connectors. Reject units with coating peeling or corroded pins.
- Live Rig Testing: Install on Quantum backplane, power on, download Unity project, test primary/standby sync, fiber Ethernet communication, and bumpless switchover.
- Firmware & Revision Verification: Record CPU firmware version, confirm compatibility with Unity Pro version and RIO adapter firmware.
- ESD-Safe Packaging: Protect edge connector and fiber ports, pack in static shielding bag, foam padded rigid carton with ESD warning.
Frequently Asked Questions (FAQ)
Q1: What is the difference between 140CPU67160 and 140CPU67160C? A: The 140CPU67160C is conformal coated. The base 140CPU67160 is non-coated. They share the same firmware and function, but cannot be mixed in some corrosive-site approved spare lists. Q2: What warranty applies to this Schneider 140CPU67160C? A: We offer a 12-month warranty. Warranty covers hardware defects under rated operating conditions. Damage from battery leakage, fiber port contamination, corrosion, or firmware mismatch is excluded. Q3: Is this 140CPU67160C in stock? A: This is EOL legacy spare. Stock is limited and fluctuates. Confirm lead time before scheduling outage. Standard uncoated CPU is not a drop-in approved substitute for coated sites. Q4: Can I use local I/O racks in Hot Standby mode with this CPU? A: No. Hot Standby mode forbids local I/O. All I/O must be configured as remote RIO. Q5: Can I hot-swap this CPU while the Quantum rack is powered? A: Hot swap is supported on Quantum backplane for standby CPU. Never remove the active primary CPU without first transferring control to standby and verifying sync health.
