Product Description

Model Definition

• 14: Represents the 14C series of industrial DC drives (FlexPak Plus).

• C: Stands for motor Control drive (DC drive category).

• 305: Indicates the power rating and input/output configuration (≈30 HP class, 208/230/460 VAC three-phase input).

• -: Separator (sometimes omitted as 14C305).

Technical Specifications

• Input: Three-phase AC, 208/230/460 VAC (selectable), 50/60 Hz.

• Output: Adjustable DC for armature (0–460 VDC) and field (fixed/ adjustable DC).

• Power Rating: ~30 HP (22 kW) at 460 VAC input.

• Control Modes: Open-loop voltage regulation; closed-loop speed regulation with tachometer feedback.

• Protection: Overcurrent, overvoltage, undervoltage, overtemperature, short circuit, ground fault.

• Ambient: 0–55°C, 5–95% RH (non-condensing).

• Mounting: Panel-mount (vertical installation required).

Interface & Wiring

• Power Terminals: L1/L2/L3 (three-phase AC input), A+/A- (armature DC output), F+/F- (field DC output), PE (protective earth).

• Control Terminals: Start/stop, forward/reverse, external speed reference (0–10 VDC), tachometer feedback, fault reset.

• Communication: No built-in network port; all control via hardwired analog/digital signals.

Core Functions

1. Precision Speed Regulation: Stable speed control under variable loads via dual-loop (speed + current) regulation.

2. High Torque Performance: Strong starting and low-speed torque for heavy-duty loads.

3. Comprehensive Protection: Shuts down or limits output during faults to protect drive and motor.

4. Flexible Configuration: Onboard potentiometers for max speed, current limit, gain, and field weakening adjustment.

Application Scenarios

• Machine Tools: Lathes, mills, grinders requiring precise DC motor control.

• Material Handling: Conveyors, cranes, hoists with high starting torque needs.

• Process Industry: Mixers, extruders, fans, pumps with variable speed demands.

• Legacy System Replacement: Direct retrofit for old Reliance 14C series drives in aging equipment.

Usage & Maintenance

Usage

1. Install vertically on a rigid panel; leave ≥100 mm clearance around for heat dissipation.

2. Wire power, motor, and control cables per terminal labels; ensure reliable grounding.

3. Set parameters (max speed, current limit) via onboard potentiometers.

4. Perform jog test to verify motor rotation direction before full-load operation.

5. Avoid continuous overload; operate within rated current and voltage.

Maintenance

1. Every 3–6 Months: Inspect chassis, cables, and terminals for damage or loose connections.

2. Cleaning: Disconnect power; wipe dust with a dry cloth (no liquid cleaners).

3. Annual Checks: Retighten terminals; clean heat sink fins to prevent overheating.

4. Static Protection: Internal components are ESD-sensitive; do not open the chassis without proper grounding.

5. Storage: Keep spare units in a cool, dry, dust-free environment.