Product Description

Model Number Interpretation

• 318: Internal part number prefix for DC1 series assemblies

• C: Chassis/control board configuration

• 158: Hardware revision and component set code

• D: Final assembly variant (including enclosure and wiring)

Technical Specifications

• Input: Single-phase 115/230 VAC (selectable), 50/60 Hz

• Output: 0–90/180 VDC (jumper-selectable armature voltage)

• Current Rating: Up to 2 HP (1.5 kW) continuous, 10–250% adjustable current limit

• Field Supply: Half-wave rectified, 50/100 VDC, 2 A max

• Control: Potentiometer speed adjustment, fixed-rate acceleration

• Feedback: Armature voltage feedback (standard); tachometer feedback (optional via jumper)

• Compensation: Adjustable IR drop compensation (0–12% of rated armature voltage)

• Enclosure: Open chassis or NEMA 12 (dust/dripping resistant)

• Weight: Approximately 6 lb (2.7 kg)

• Protection: Incoming line fuse (short circuit), internal motor thermostat (overload)

Interface and Communication Configuration

• Main Terminals: AC input (L1/L2), DC armature (A+/A−), DC field (F+/F−)

• Control Terminals: Run/stop, remote start/stop, speed potentiometer connections

• Adjustments: Max speed, min speed, current limit, IR compensation, acceleration rate

• Communication: No native serial communication; analog-only control

• Indicators: Power-on LED, overload fault indicator

Core Functions

• Variable Speed Control: Smooth adjustable speed for DC motors via armature voltage regulation

• Dual Voltage Operation: Jumper-selectable 90 VDC or 180 VDC armature output

• Overload Protection: Adjustable current limit and motor thermal protection

• IR Compensation: Reduces speed drop under load for stable performance

• Simple Integration: Compatible with standard DC motors and easy-to-use potentiometer control

Application Scenarios

• Light Industrial: Conveyors, mixers, fans, and small machinery

• Material Handling: Small cranes, hoists, and lift systems

• Legacy Equipment: Replacement for older Reliance DC1 drives in existing automation lines

• General-Purpose DC Motor Control: Any 115/230 VAC single-phase application requiring adjustable DC speed

Usage and Maintenance Instructions

• Installation: Mount in a clean, dry, well-ventilated area; avoid direct heat and moisture

• Wiring: Use appropriate gauge wire for AC input, DC armature, and field circuits; tighten terminals securely

• Setup: Select armature voltage (90/180 VDC) via jumper; adjust current limit and IR compensation per motor specs

• Operation: Use the front-panel potentiometer for local speed control; apply remote start/stop for automated systems

• Maintenance: Inspect quarterly for loose connections, dust buildup, and fuse condition; replace worn potentiometers as needed

• Safety: Disconnect all power and wait for capacitors to discharge before servicing