SAMSUNG SMPS-08 Rack Power Module

SAMSUNG SMPS-08 Rack Power Module

The SAMSUNG SMPS-08 is a heavy-duty rack power supply module engineered specifically for Samsung SPC and SM-series PLC system baseplates. It steps down primary AC/DC plant power to regulated DC logic voltages required by the central processing unit (CPU), I/O modules, and peripheral communication cards across the backplane bus. Designed for high reliability in harsh industrial environments, the SMPS-08 ensures continuous, noise-free operational power to prevent unexpected system resets and controller downtime.

Technical Parameter List

Product Features / Core Advantages

Universal Power Input: Wide-range AC/DC input accommodates global grid fluctuations and utility voltage drops without dropping system power.

Integrated Dual Output: Provides both regulated 5V DC for backplane bus integrated circuits and auxiliary 24V DC for external sensors and field contacts.

Comprehensive Electrical Protection: Onboard short-circuit, overvoltage, overcurrent, and thermal overload protection safeguard downstream CPU and high-value I/O modules.

Low EMI & High Noise Rejection: Internal switching filter and isolation transformer prevent line noise and voltage spikes from propagating to the PLC backplane.

Front Panel Diagnostics: LED status indicators provide immediate visual feedback on power health (POWER OK / ALARM).

Model Classification & Power Series

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

Dielectric Withstand Voltage: 1500V AC for 1 minute between primary terminals and frame ground (FG)

Atmospheric Environment: Free from corrosive gases, flammable vapors, and excessive conductive dust

Installation Method

Power Isolation: Verify that the primary AC/DC power mains are isolated and locked out before installation.

Rack Position: Always install the SMPS-08 power module into the leftmost slot (Slot 0) of the Samsung SPC/SM baseplate.

Mechanical Locking: Slide the module top guide hook into the baseplate notch, pivot downward until the backplane connector seats completely, and tighten the top/bottom retaining screws.

Protective Earth (FG): Connect a heavy-gauge copper wire (minimum 2.0 mm²) from the FG (Frame Ground) terminal directly to the central control cabinet ground bar.

Operating Instructions

Wiring: Connect primary power lines to L (Line) and N (Neutral) terminals. Maintain separate conduits for primary AC input cables and DC field signal cables.

Power-On Sequence: Once wired, apply power. Verify that the green POWER LED illuminates steady.

Auxiliary Power Limits: Do not exceed the 0.8A rating on the 24V DC field terminal block to prevent thermal tripping of the internal supply.

Maintenance Check: Check terminal block screw tightness every 6–12 months in high-vibration applications to avoid resistive heating.