SAMSUNG SMAOC-12 Analog Output Module (12CH)
SAMSUNG SMAOC-12 is a high-density 12-channel analog output expansion module engineered for SAMSUNG industrial programmable logic controller (PLC) system architectures. Designed to convert digital processing data into precise analog current or voltage signals, it provides smooth, multi-loop continuous control over field actuators such as control valves, frequency converters (VFDs), proportional valves, and industrial power controllers.
Technical Parameter List
| Parameter | Technical Standard / Specification |
| Model | SAMSUNG SMAOC-12 |
| Module Type | High-Density Analog Output Module |
| Output Channels | 12 isolated analog channels |
| Output 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 digitizer |
| Conversion Speed | ≤ 2.0 ms per channel |
| Overall Accuracy | ±0.2% F.S. (Full Scale) at 25°C |
| Load Impedance | Current mode: ≤ 500 Ω / Voltage mode: ≥ 1 kΩ |
| Isolation Protection | Optocoupler galvanic isolation (bus-to-field protection) |
Product Features / Core Advantages
High Channel Density: Houses 12 analog output channels within a single slot footprint, saving control cabinet space and reducing expansion costs per control loop.
Stable High-Precision Output: High D/A conversion accuracy ensures minimal signal drift for demanding closed-loop process applications.
Galvanic Electrical Isolation: Photocoupler isolation prevents ground loops and guards internal controller electronics against external voltage transients.
Built-in Circuit Protection: Features integrated short-circuit protection for voltage outputs and open-loop detection for current loops to prevent hardware damage.
Model Classification
SAMSUNG SMAOC-12: High-density 12-channel analog output module.
SAMSUNG SMAOC-8: Standard 8-channel analog output module.
SAMSUNG SMAIC-12: High-density 12-channel analog current input module.
SAMSUNG SMAIC-8: Standard 8-channel analog current/voltage input module.
SAMSUNG SMCPU-08: Main CPU controller module.
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 standards (10 Hz to 57 Hz @ 0.075mm amplitude)
Electromagnetic Immunity: Compliant with IEC 61000-4-2/4/5 noise tolerance standards
Installation Method
Power Off Rack: Disconnect all main power sources to the PLC rack before inserting or removing the SMAOC-12 module.
Backplane Insertion: Align module guides with the designated rack slot and push firmly until the rear connector seats into the backplane bus. Tighten top/bottom retaining screws.
Shielded Wiring: Route output connections using shielded twisted-pair cables. Earth the shield wire at a single grounding point on the PLC cabinet side.
Range Setup: Configure software parameters or hardware DIP switches to set the designated signal output mode (4–20mA / 0–10V) prior to applying field power.
Operating Instructions
Verify that field load impedances remain within valid parameters (current ≤ 500 Ω, voltage ≥ 1 kΩ) to maintain control signal linearity.
Ensure output scale parameters in the PLC logic project match the physically wired field actuator range.
Inspect terminal connections periodically during routine preventative maintenance to ensure secure wire contacts against operational vibration.