Product Short Description
Product Introduction
The ABB CP-A RU is a high-current industrial power supply redundancy unit designed for parallel operation with two ABB CP-series switch-mode power supplies. It delivers true 100% decoupled redundancy to eliminate single points of failure, ensuring uninterrupted power delivery to critical loads in automation, process, and safety-related systems. By isolating the outputs of both power supplies, it prevents fault propagation and enables automatic switchover to the redundant unit when a primary supply fails, degrades, or is disconnected. Engineered for industrial reliability, it operates in harsh environments with extreme temperatures, vibration, and electrical noise, making it ideal for applications where uptime is non-negotiable.
Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Industrial Power Supply Redundancy Unit |
| Compatible Power Supplies | ABB CP-C.1, CP-S.1 series (24 V DC models) |
| Input Configuration | 2 independent channels (Input 1 / Input 2) |
| Rated Input Voltage | 24 V DC (per channel) |
| Input Voltage Range | 10–28 V DC (per channel) |
| Rated Input Current per Channel | 1–20 A |
| Maximum Input Current per Channel | 30 A for 300 s (short-term peak) |
| Output Configuration | 1 common output (++/–) |
| Rated Output Voltage | 24 V DC |
| Output Voltage Drop | Typical 0.6 V; Maximum 0.9 V |
| Rated Output Current | 1–40 A |
| Peak Output Current | 60 A for 300 s |
| Reverse Feed Resistance | < 40 V |
| Full-Load Operating Temp | -25 °C to +60 °C (no derating) |
| Extended Operating Temp | -25 °C to +70 °C (with derating: 2.5%/K above 60 °C) |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% RH (non-condensing) |
| Climatic Category | IEC/EN 60721 3K3 |
| Pollution Degree | EN 50178 Class 2 |
| Isolation Voltage | 500 V AC (input/output/enclosure) |
| Protection Class (Enclosure) | IP20 |
| Protection Class (Terminals) | IP20 |
| Dimensions (W x H x D) | 60 mm (incl. screws) x 130 mm x 137 mm (2.36 in x 5.12 in x 5.39 in) |
| Weight | 0.89 kg (1.96 lb) |
| Mounting | DIN rail (TH 35-7.5/15, IEC/EN 60715), horizontal orientation |
| Clearance to Other Units | Horizontal ≥10 mm; Vertical ≥50 mm |
| Cable Size (Stranded with Ferrule) | 2.5–10 mm² (14–8 AWG) |
| Cable Size (Stranded without Ferrule) | 0.5–10 mm² (20–8 AWG) |
| Cable Size (Rigid) | 0.5–16 mm² (20–6 AWG) |
| Wire Stripping Length | 12 mm (0.47 in) |
| Tightening Torque | 1.2–1.5 Nm |
| Certifications | CE, UL 60950, CAN/CSA C22.2 No.60950, UL 508, UL 1604 (Class I, Div 2), EAC, RoHS |
| EMC Compliance | IEC/EN 61000-6-2/4-2/4-3/4-4/4-5/4-6 (Immunity); EN 55022 Class B (Emission) |
Key Features & Benefits
-
True Decoupled Redundancy
- Integrates two high-current diodes to provide 100% electrical isolation between the two parallel power supplies, preventing fault propagation from a failed unit to the redundant one.
- Automatically transfers the load to the healthy supply within milliseconds, ensuring zero downtime for critical processes.
- Both inputs must be sized to handle the full load current to guarantee seamless switchover.
-
High-Capacity Power Delivery
- Supports up to 20 A per input channel and a combined output of 40 A, suitable for high-power control panels, PLC systems, and industrial machinery.
- Delivers stable 24 V DC output with minimal voltage drop, ensuring reliable operation of sensitive control components.
- Handles short-term peak currents up to 60 A for 300 s, accommodating inrush loads like motors and solenoids.
-
Robust Industrial Hardening
- Operates reliably in temperatures from -25 °C to +70 °C and resists humidity, vibration, and electromagnetic interference (EMI).
- Features a rugged aluminum/zinc-coated steel enclosure and IP20 protection for both the enclosure and terminals, safeguarding against dust and accidental contact.
- Complies with UL 1604 (Class I, Div 2) for safe use in hazardous locations like oil & gas platforms and chemical plants.
-
Integrated Monitoring with CP-A CM (Accessory)
- Works with the CP-A CM control module (1SVR427075R0000) to provide real-time voltage monitoring for both input channels.
- The CP-A CM features adjustable undervoltage thresholds (14–28 V) per channel and relay outputs to signal faults, enabling proactive maintenance.
- Visual status via green LEDs: “IN 1″/”IN 2” for healthy inputs, “OUT” for valid output voltage (>3 V).
-
Simplified Installation & Maintenance
- Tool-less DIN rail mounting with a secure latch mechanism for quick installation and removal.
- Clear terminal labeling for Input 1, Input 2, and Output, reducing wiring errors and downtime.
- Maintenance-free design with no moving parts, minimizing operational costs and service intervals.
-
Safety & Reliability
- Provides 500 V AC isolation between inputs, output, and enclosure to prevent electrical hazards and signal interference.
- Includes transient overvoltage protection to safeguard against power surges and voltage spikes.
- Complies with international safety standards (IEC/EN 60950, UL 60950) and EMC directives, ensuring compliance with global regulations.
Application Scenarios
The ABB CP-A RU is deployed in industries requiring uninterrupted 24 V DC power for critical control systems, safety circuits, and automation infrastructure:
-
Factory Automation & PLC Systems
- Ensures power continuity for PLC controllers, HMIs, remote I/O modules, and safety instrumented systems (SIS) in automotive, food & beverage, and packaging lines.
- Prevents production downtime caused by power supply failure, fuse blowout, or wiring errors in high-current control panels.
-
Power Generation & Distribution
- Supports substation control systems, switchgear, and protection relays in thermal, hydro, and renewable power plants.
- Guarantees reliable power for SCADA systems and critical monitoring equipment, even in harsh outdoor environments.
-
Oil & Gas Industry
- Used in offshore platforms, onshore refineries, and pipeline control systems to power ESD (Emergency Shutdown) systems, RTUs, and field instrumentation.
- UL 1604 (Class I, Div 2) certification enables safe operation in explosive atmospheres without risk of ignition.
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Process Industries (Chemical, Pharmaceutical, Cement)
- Provides redundant power for reactor control systems, distillation columns, and material handling equipment in continuous process plants.
- Ensures stable operation of temperature, pressure, and flow control loops, preventing product loss and equipment damage.
-
Marine & Offshore Applications
- Powers shipboard automation systems, dynamic positioning controls, and offshore rig instrumentation, withstanding salt spray, vibration, and extreme temperature fluctuations.
- Meets marine safety standards for reliability in critical navigation and process control systems.
-
Railway & Transportation
- Supports signaling systems, station automation, and traction power control in rail networks, ensuring fail-safe operation of safety-critical equipment.
- Delivers consistent power to communication and control systems across geographically dispersed railway infrastructure.
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