Line-side interruption
Fuses or a circuit breaker protect the feeder and isolate a line-side fault.
Branch1305-AA08A / 1305-AA12AAllen-Bradley 230 V adjustable-frequency drives
Bulletin 1305 Series C · exact-model technical comparison
Product Summary
Allen-Bradley 1305-AA08A / 1305-AA12A are the higher-current 200/230 V members of the compact Bulletin 1305 Series C range. Both use the same rectifier, DC-link, regulator, and PWM inverter relationship, while AA12A raises the continuous motor-output step beyond AA08A.
When 1305-AA08A / 1305-AA12A receive a run command, the selected reference passes through programmed limits and acceleration or deceleration ramps before it controls inverter frequency. Protection logic simultaneously watches current, bus, temperature, and motor-overload conditions, allowing a fault to block the output even when the command circuit remains present.
Technical Details
Technical Item1305-AA08A1305-AA12A
| Brand | Allen-Bradley | |
|---|---|---|
| Product Type | Bulletin 1305 adjustable-frequency AC drive | |
| Product Family | 1305 Series C | |
| Input Voltage | 200/230 V AC, single-phase or three-phase | |
| Operating Voltage Range | 180…265 V AC | |
| Input Frequency | 47…63 Hz | |
| Motor Output | 1.5 kW (2 hp) | 2.2 kW (3 hp) |
| Output Current | 8.0 A | 12.0 A |
| Maximum Input kVA | 3.1 kVA | 4.6 kVA |
| Output Frequency | 0…400 Hz | |
| Drive Efficiency | 97.5% at rated amperes, nominal line voltage | |
| Enclosure | IP30 / NEMA Type 1 | |
| Cooling | Natural convection | |
| Operating Temperature | 0…50 °C | |
| Relative Humidity | 0…95%, noncondensing | |
| Control Method | Sine-coded PWM; volts-per-hertz regulation | |
| Analog Input | 0…10 V DC or 4…20 mA | |
| Relay Output | Form C programmable contact | |
Key Features — High-Current Frame Differences
The shared interface of 1305-AA08A / 1305-AA12A can obscure important power-stage differences during spare selection.
Distinct current steps
AA12A carries a larger sustained motor demand than AA08A even though their programming concepts match.
Conductor and device sizing
Output and line components follow the exact catalog rating rather than the family name.
Cabinet heat planning
Losses from the selected power stage enter the enclosure and must be included in panel thermal design.
Setup and Operation Questions
What is the decisive difference between 1305-AA08A / 1305-AA12A?
1305-AA08A / 1305-AA12A share the 230 V-class controls, but AA12A has the higher motor-power and output-current rating. Select from the actual motor current and load profile.
Why should enclosure heat be recalculated when moving from 1305-AA08A / 1305-AA12A?
The larger 1305-AA08A / 1305-AA12A power stage can change drive losses and airflow needs. Cabinet temperature must be checked for the installed rating and surrounding equipment.
What causes an overvoltage trip on 1305-AA08A / 1305-AA12A during a fast stop?
Regenerated motor energy can raise the DC bus in 1305-AA08A / 1305-AA12A during deceleration. Review the stopping ramp, load inertia, and approved braking arrangement.
Can the same motor cable be retained when changing between 1305-AA08A / 1305-AA12A?
Only after checking conductor ampacity, insulation, length, grounding, and terminal fit for the selected 1305-AA08A / 1305-AA12A model and motor.
Which checks are useful before resetting 1305-AA08A / 1305-AA12A after an overload?
Record the fault and operating state of 1305-AA08A / 1305-AA12A, then verify motor current, motor data, mechanical load, acceleration demand, and ventilation before restart.
Why is the complete suffix important when ordering 1305-AA08A / 1305-AA12A?
The complete 1305-AA08A / 1305-AA12A identity keeps voltage class, current step, series execution, and accessories linked to the correct replacement request.
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