Email: sales@runshengdcs.com
WhatsApp / Wechat：+86 15383419322
Phone：+86 15383419322Description
The ABB SDCS-POW-4 is a high-availability redundant power supply module engineered for ABB’s SDCS-IOB distributed drive control systems. Designed to deliver uninterrupted 5 V DC power to critical I/O modules (e.g., SDCS-CON-4, SDCS-DIG-8), it ensures operational continuity in industrial automation networks. This dual-input module accepts 24 V DC primary and secondary feeds with active current sharing, enabling seamless failover during mains fluctuations or generator transitions. The ABB SDCS-POW-4 features integrated diagnostics with relay alarms for undervoltage, overload, and thermal events, while its compact DIN-rail form factor (–25°C to +70°C operating range) suits space-constrained drive cabinets in harsh environments like metal processing and offshore installations.
ABB SDCS-POW-4
Technical Specifications
| Parameter | Value |
| Product Model | SDCS-POW-4 |
| Manufacturer | ABB |
| Product Type | Redundant Power Supply Module |
| Input Voltage | 24 V DC (18–36 V DC dual redundant) |
| Output Voltage | 5 V DC (±0.5%) |
| Output Current | 10 A (continuous) |
| Redundancy | Active parallel operation (N+1) |
| Efficiency | 92% (typical) |
| Alarm Contacts | 2 x relay outputs (fail/overload) |
| Isolation | 1500 V AC input-to-output |
| Overload Protection | 110% (auto-recovery) |
| Operating Temperature | –25°C to +70°C |
| Certifications | SIL 2, UL 61800-5-1, DNV-GL |
| Dimensions | 124 x 30 x 120 mm (H x W x D) |
Main Features and Advantages
Fault-tolerant power delivery:
Active current balancing (±2%) between parallel units prevents single-point failures
Decoupled OR-ing diodes eliminate reverse current during module replacement
Intelligent diagnostics:
Real-time monitoring of output ripple (<50 mV pp) and load imbalance
Relay contacts trigger DCS alarms for predictive maintenance
Robust electrical protection:
Surge immunity (IEC 61000-4-5 Level 4) withstands 4 kV transients
Short-circuit protection with auto-recovery within 200 ms
Deployment flexibility:
Hot-swappable design enables replacement without system shutdown
DIN-rail mounting with tool-less backplane connection to SDCS-IOB
Application Field
The ABB SDCS-POW-4 secures power for drive-critical I/O in:
Steel Mills: Backup power for roll gap sensors and hydraulic valve controls
Marine Propulsion: Redundant feed to thruster interface modules in DP-class vessels
Cement Plants: Uninterrupted operation of kiln drive temperature I/O
Offshore Wind: Grid converter control systems exposed to salt mist/vibration
Mining: Hoist brake monitoring in SIL 2-compliant safety circuits
Related Products
SDCS-IOB-1: Base unit for mounting SDCS-POW-4 and I/O modules
SDCS-CON-4: Signal converter powered by SDCS-POW-4
SDCS-DIG-8: 8-channel digital I/O module
ACS880: Drive controller integrated with SDCS-IOB platform
SDCS-ANF-2: Analog noise filter for sensitive signal paths
SDCS-OPT-1: Optical bus repeater for cabinet extensions
Drive Composer Pro: Configuration software
ABB SDCS-POW-4
Installation and Maintenance
Pre-installation preparation: Verify input polarity and ground continuity (<0.1 Ω). Use 1.5 mm² copper wiring for inputs. Ensure equal cable lengths for parallel units. Configure alarm relays in Drive Composer Pro.
Maintenance recommendations: Monitor output voltage deviation monthly (max. ±1%). Clean ventilation slots biannually. Replace after 8+ years or if LED indicators show red. For hot-swap: Disengage locking lever before extraction; insert replacement within 5 minutes.
