SAMSUNG SMAOC-8 Analog Output Module (8CH)
SAMSUNG SMAOC-8 is an 8-channel analog output expansion module engineered for SAMSUNG industrial PLC system architectures.
Designed to convert digital control values from the central processor into precise analog current or voltage signals, it enables accurate proportional control over field actuators such as control valves, variable frequency drives (VFDs), positioners, and process power regulators.
Technical Parameter List
| Parameter | Technical Standard / Specification |
| Model | SAMSUNG SMAOC-8 |
| Module Type | Analog Output Expansion Module |
| Output Channels | 8 isolated analog output channels |
| Output Signal Ranges |
Current: 4–20 mA DC, 0–20 mA DC Voltage: 0–10V DC, 1–5V DC, -10V to +10V DC |
| D/A Resolution | 12-bit / 16-bit high-resolution digital-to-analog converter |
| Conversion Speed | ≤ 2.0 ms per channel |
| Overall Accuracy | ±0.2% F.S. (Full Scale) at 25°C |
| Load Resistance | Current output: ≤ 500 Ω / Voltage output: ≥ 1 kΩ |
| Isolation Protection | Optocoupler galvanic isolation between system bus and output loops |
Product Features / Core Advantages
High-Precision Signal Drive: Delivers fine D/A resolution for stable, smooth, and repeatable actuation in closed-loop control applications.
Multi-Range Versatility: Configurable via hardware jumpers or PLC setup software to support both current loop and voltage signal standards.
Galvanic Electrical Isolation: High-grade optical isolation prevents ground loops and protects backplane digital circuits from field power surges.
Integrated Output Safeguards: Includes open-circuit load detection for current loops and short-circuit protection for voltage channels to prevent module damage.
Model Classification
SAMSUNG SMAOC-8: Standard 8-channel analog current/voltage output module.
SAMSUNG SMAIC-8: 8-channel analog input module.
SAMSUNG SMAIC-12: High-density 12-channel analog current input module.
SAMSUNG SMDI-8 / SMDO-8: 8-channel digital input and output expansion units.
SAMSUNG SMCPU-08: Main CPU controller unit.
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: Compliant with IEC 60068-2-6 standard (10 Hz to 57 Hz @ 0.075mm displacement)
EMC Immunity: Compliant with IEC 61000-4-2/4/5 noise tolerance specifications
Installation Method
Power Disconnect: Shut off power to the PLC system rack before inserting or removing the SMAOC-8 module.
Backplane Alignment: Slide the module along the rack guide slot until the rear connector seats firmly into the backplane bus. Fasten the top and bottom retaining screws.
Shielded Wiring Practice: Connect actuators using twisted-pair shielded cables. Ground the shield at a single point on the PLC enclosure side to minimize external electrical noise.
Signal Mode Configuration: Set DIP switches or software settings to match the target actuator input signal format (4–20mA or 0–10V) before applying field power.
Operating Instructions
Ensure field load impedance remains within specified thresholds (current load ≤ 500 Ω, voltage load ≥ 1 kΩ) to maintain linearity.
Verify analog output scale mapping in the PLC project configuration to avoid over-ranging driven machinery.
Inspect terminal screws during routine preventive maintenance to prevent signal drift caused by loose wire contact.