Product Overview
The Allen-Bradley 1305-BA09A-HA2 is a member of Rockwell Automation’s Bulletin 1305 family of adjustable frequency AC drives, engineered to deliver precise, energy-efficient speed control for three-phase AC induction motors. This drive accepts a 380–460 VAC, 50/60 Hz three-phase input and converts it into a variable-voltage, variable-frequency output that can run a connected motor anywhere from standstill up to its rated speed—and beyond—under controlled conditions. With a 5 HP (4.0 kW) power rating and 9 A nominal output current, the 1305-BA09A-HA2 is ideally suited to medium-duty industrial applications where smooth starting, adjustable running speed, and controlled stopping are more valuable than simply switching a motor on and off.
The Allen-Bradley 1305-BA09A-HA2 belongs to a proven drive platform that has been deployed in thousands of installations worldwide. Its control terminal block (TB2) supports a versatile mix of analog and discrete I/O: two analog inputs configurable for 0–10 VDC or 4–20 mA frequency reference, a 0–10 VDC analog output for speed feedback, one potentiometer input, two programmable discrete outputs, and dedicated inputs for Start, Stop, Enable, Reverse, and Jog. This makes the drive equally capable of standalone operation via its integrated Human Interface Module (HIM) or integration into a hardwired control scheme with a PLC or relay logic. For applications requiring networked control, the drive also supports serial communication through an optional SCANport interface.
Housed in an IP30 (NEMA Type 1) enclosure, the 1305-BA09A-HA2 is designed for indoor industrial installations and mounts directly to a panel or cabinet wall. Although the Bulletin 1305 series has been discontinued by the manufacturer, the Allen-Bradley 1305-BA09A-HA2 remains a strategically important spare part for facilities committed to extending the service life of their existing motor control infrastructure. Its combination of straightforward parameter structure, robust construction, and broad compatibility with standard three-phase motors makes it a dependable choice for both replacement and retrofit projects.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1305-BA09A-HA2 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | Adjustable Frequency AC Drive / VFD |
| Product Line | Bulletin 1305 |
| Input Voltage | 380–460 VAC (340–500 VAC operating range) |
| Input Phase | 3-phase |
| Input Frequency | 50/60 Hz |
| Output Voltage | 0–460 VAC (3-phase) |
| Rated Output Current | 9.0 A @ 380 VAC; 8.4 A @ 415 VAC; 7.6 A @ 460 VAC |
| Power Rating | 5 HP (4.0 kW) |
| Programmable Output Frequency | 0–400 Hz |
| Enclosure Rating | IP30 (NEMA Type 1) |
| Human Interface Module | Integrated HIM with digital up/down keys |
| Terminal Blocks | TB1 (power), TB2 (control) |
| Recommended Input Fuse | 20 A (dual-element time-delay) |
| Dimensions (W×H×D) | 210 × 195 × 179 mm |
| Weight | 4.2 kg (9.2 lbs) |
| Maximum Operating Temp. | 50 °C (122 °F) |
| Efficiency | Up to 97.5% |
Main Features and Advantages
Precise Adjustable Speed Control: The Allen-Bradley 1305-BA09A-HA2 gives operators and control systems the ability to modulate motor speed smoothly across a wide range, far beyond the limitations of simple across-the-line starting. By adjusting both output frequency and voltage in proportion to the required load, the drive maintains excellent torque characteristics throughout the speed range. This translates directly into process benefits: pumps and fans can be trimmed to exactly match demand, conveyors can ramp up and down gently, and mechanical stress on couplings, belts, and gearboxes is dramatically reduced.
Flexible I/O and Control Options: A key strength of the 1305- is its adaptable control terminal block. The two analog inputs accept either 0–10 VDC or 4–20 mA signals, allowing the drive to receive speed commands from a PLC analog output card, a remote potentiometer, or a process transmitter. A dedicated 0–10 VDC analog output can feed drive speed back to the control system, while two programmable discrete outputs can be configured to report status conditions such as “Running” or “Faulted.” Discrete inputs cover Start, Stop, Enable, Reverse, and Jog functions, providing all the basic control modes needed for most industrial machines without requiring a network interface.
Energy Efficiency and Cost Savings: Because AC motors consume power in rough proportion to speed and load, the ability to slow a motor down when full speed is not required yields immediate energy savings. The Allen-Bradley 1305-BA09A-HA2 is particularly effective in variable-torque applications such as centrifugal fans and pumps, where reducing speed by even 20% can cut energy consumption by nearly 50%. Over the service life of the installation, these savings often far outweigh the initial cost of the drive.
Smooth Starting and Stopping: Direct-on-line starting subjects a motor and driven load to a sudden high-current surge and abrupt mechanical acceleration. The 1305- eliminates this shock by ramping voltage and frequency up gradually during start and down during stop. This protects both the electrical supply and the mechanical driveline, reducing nuisance tripping of upstream breakers and extending the life of belts, chains, bearings, and couplings.
Robust Industrial Enclosure: The IP30/NEMA Type 1 housing provides protection against accidental contact with live internal components and limits the ingress of solid objects, making the drive suitable for clean, indoor industrial environments. Its compact 210 × 195 × 179 mm footprint allows it to be mounted in standard control panels without consuming excessive space.
