SAMSUNG SMBK-12 IOU Rack Backplane

SAMSUNG SMBK-12 IOU Rack Backplane

The SAMSUNG SMBK-12 is a 12-slot Input/Output Unit (IOU) expansion rack backplane designed as the central structural and electrical backbone for high-density Samsung SPC and SM-series PLC automation architectures. It integrates power, CPU, and up to 12 dedicated expansion slots for analog, digital, positioning, and specialized communication modules on a single high-durability printed circuit frame. Built with low-latency parallel backplane traces, the SMBK-12 ensures instantaneous data synchronization, minimal signal noise, and stable high-speed parallel bus communication across complex industrial systems.

Technical Parameter List

Product Features / Core Advantages

High-Density 12-Slot Expansion: Accommodates large-scale automation projects with up to 12 expansion modules on a single rack, significantly reducing system footprint and panel wiring.

Low-Latency Parallel Backplane Bus: Precision-etched bus traces ensure reliable, high-speed signal transmission and zero-lag communication between the CPU and field I/O cards.

Vibration-Resistant Rigid Chassis: Constructed with an anti-warping aluminum support frame designed to withstand heavy mechanical shock and industrial vibration without contact degradation.

Mechanical Slot Keying: Dedicated slot keying prevents misaligned module insertion, protecting backplane pins and sensitive ICs from short circuits or reverse-mounting damage.

Integrated EMI/RFI Shielding: Multi-layer grounding planes suppress electromagnetic and radio frequency noise to ensure clean signal paths across high-density I/O points.

Model Classification & Series Compatibility

Environmental Tolerance Conditions

Operating Temperature: 0°C to +55°C (32°F to 131°F)

Storage Temperature: -25°C to +70°C (-13°F to 158°F)

Relative Humidity: 5% to 95% RH (non-condensing)

Vibration Resistance: IEC 60068-2-6 compliant (10–57 Hz @ 0.075 mm amplitude, 57–150 Hz @ 1g)

Shock Immunity: IEC 60068-2-27 compliant (15g peak acceleration, 11 ms duration)

Noise Immunity: IEC 61000-4-4 (FTB) 2kV power lines / 1kV signal lines

Installation Method

Panel Preparation: Mark and drill four M4 mounting holes on the control panel mounting plate matching the SMBK-12 backplane dimensions.

Rack Mounting: Secure the backplane frame tightly to the metal panel using M4 screws with spring washers to ensure solid electrical grounding to the panel chassis.

Ground Braid Connection: Run a heavy-gauge copper grounding wire (minimum 2.0 mm²) from the SMBK-12 FG (Frame Ground) terminal directly to the enclosure's main ground bar.

Power & CPU Insertion: Install the power supply module into the leftmost power slot first, followed by the CPU into Slot 0. before populating remaining I/O slots (Slots 1–12).

Operating Instructions

Module Seating: Push each expansion module straight into its designated slot along the guide rails until the backplane connector locks firmly, then tighten top/bottom retaining screws.

Hot-Swapping Warning: Never insert or remove modules while the power supply module is energized to avoid electrical arc damage to backplane pin contacts.

Slot Mapping: Ensure module slot positions match the hardware configuration specified in the Samsung PLC programming software (WinGPC) I/O table.

Maintenance Checks: Regularly inspect edge connectors for dust accumulation and re-verify mounting screw tightness in high-vibration applications.