Product Details
Configured for voting diode execution and power supply decoupling in System 800xA and High Integrity controller networks, the ABB SS823 3BSE038226R1 (SS823 Voter and Over Voltage Protection Module) provides direct physical/electrical execution. The module manages dual 24 VDC power input channels, providing load sharing and over-voltage clamping to prevent transient power fault propagation across downstream automation backplanes. Internal supervision relays actively track voltage integrity and fault states to drive system diagnostics.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SS823 3BSE038226R1 |
| Brand | ABB |
| Origin | Sweden |
| Weight | 870 g (1.9 lbs) |
| Dimensions | 116 mm x 145 mm x 132 mm (4.6 in x 5.8 in x 5.3 in) |
| Operating Temp | 55 deg C maximum ambient |
| Power Consumption | Heat dissipation 24 W at 20 A load (6 W at 5 A load) |
| Nominal Input Voltage | 1 x 24 VDC |
| Maximum Input Voltage Limit | 60 VDC |
| Rated Input Power | 500 W |
| Rated Output Current | 20 A (Maximum overload threshold: 35 A) |
| Output Voltage Drop | 1.2 V lower than input voltage at maximum current |
| Over Voltage Protection | Cut-off threshold less than 30 V |
| Diagnostics & Features | Load sharing, Supervision relay, High Integrity support |
Backplane Bus Communication Velocity and High Integrity Deterministic Scaling
The SS823 module integrates directly into High Integrity power distribution networks, ensuring continuous, surge-protected DC bus stabilization without introducing transmission delays to adjacent I/O communication buses. Firmware flash compatibility across system power controllers enables real-time voltage monitoring, allowing the supervisory relay to isolate power rail faults instantly. High-density component layout provides rapid thermal dissipation while maintaining deterministic power availability during peak load transients.
Frequently Asked Questions
Q: What is the primary function of the internal supervision relay on the SS823?
A: The supervision relay monitors internal diode health and power channel status, changing state to trigger system alarms if an input channel fails or falls out of tolerance.
Q: What is the maximum over-voltage limit supported by the SS823 before output clamping occurs?
A: The module limits output voltage spikes to less than 30 V to protect sensitive processing boards and I/O modules connected downstream.
Field Installation Guidelines
- Mount the module vertically on standard DIN rails inside the enclosure, maintaining a minimum clearance spacing of 15 mm horizontally and 30 mm vertically to allow natural thermal convection.
- Ensure input wiring matches 24 VDC polarity specifications and that supply circuits are de-energized before making terminal block connections.
- Torque all power terminal screws to manufacturer-specified mechanical limits (typically 0.5 to 0.8 Nm) to ensure low-resistance electrical contact under high current loads.
- Verify that supervisory relay signal cables are routed separately from high-voltage AC distribution conductors to minimize electromagnetic interference.
- Connect protective earth (PE) grounding terminals directly to the cabinet ground busbar using a short, thick copper strap.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
The Shift to Flexible IO Modules in Modern Industrial Automation
Traditional control systems rely on dedicated Input Output (IO) cards for industrial automation. Each conventional module processes a single signal type, such as Digital Input (DI), Digital Output (DO), Analog Input (AI), or Analog Output (AO). A standard 16-channel card accepts only one specific channel type across all ports. This inflexible hardware design often creates severe engineering bottlenecks during project execution. Engineers frequently must install entirely new cards to accommodate a single extra sensor. Consequently, late design changes increase control cabinet space requirements and drive up project costs.
DCS Commissioning Steps in Industrial Automation Projects
Commissioning a Distributed Control System (DCS) represents a crucial milestone when deploying modern process automation infrastructure. Field engineers must execute systematic verification steps to transition complex control hardware from static installation to dynamic plant control. Proper commissioning ensures that controllers, I/O modules, network switches, and HMI software operate in strict compliance with engineering design specifications before introducing live process fluids.
PLC and DCS Control System Spares Strategy: Engineering Guidelines
Modern factory automation relies on high-speed fiber optic backbones to link distributed control systems across noise-intensive industrial environments. Unlike copper wiring, optical fibers transmit data via light pulses, making them completely immune to electromagnetic interference (EMI). Field engineers must master optical cable joining and fusion splicing techniques to guarantee low-loss data transmission across critical Programmable Logic Controller (PLC) and Distributed Control System (DCS) nodes.