VFD Motor Control Application Solution – Allen-Bradley 1336F-BRF75-AE-DE | 1336 PLUS II Series
In heavy industrial environments, uncontrolled motor starting is one of the leading causes of mechanical failure and energy waste. Across pump stations, HVAC systems, and conveyor lines, fixed-speed motors draw 6–8× rated current at startup, generating torque spikes that shorten bearing life by up to 40% and inflate energy costs by 20–35% compared to variable-speed operation. Facilities running fixed-speed 75HP motors on variable-load applications routinely lose $18,000–$32,000 annually in excess energy and unplanned maintenance.
The Allen-Bradley 1336F-BRF75-AE-DE eliminates these losses at the source. As a 75HP (55kW) adjustable frequency AC drive from the proven 1336 PLUS II platform, it delivers precise 0–400Hz output frequency control, programmable acceleration/deceleration ramps, and built-in PID regulation — enabling soft-start, speed matching, and process-responsive motor control that reduces energy consumption by up to 50% on variable-torque loads while extending motor and mechanical drivetrain service life.
Where This Product Is Used
Water & Wastewater Treatment
Booster pump stations (variable flow demand, 4–20mA pressure feedback), raw water intake pumps (seasonal flow variation, 0–60Hz speed range), aeration blowers (dissolved oxygen PID control, continuous duty 24/7, NEMA 4X enclosure environments). Meets ANSI/AWWA standards for pump station automation.
HVAC & Building Automation
Supply air fans (VAV system pressure control, BACnet/Modbus integration), chilled water pumps (differential pressure regulation, energy metering), cooling tower fans (ambient temperature-based speed trim, -10°C to +50°C ambient). Supports ASHRAE 90.1 energy compliance.
Oil & Gas / Petrochemical
Pipeline booster compressors (torque-controlled ramp, Class I Div 2 panel integration), crude transfer pumps (flow-matched speed, remote SCADA via RS-485), gas injection blowers (constant pressure mode, hazardous area wiring). Aligns with API 670 and ISA-5.1 instrumentation standards.
Mining & Minerals Processing
Belt conveyor drives (load-sharing multi-drive configuration, regenerative braking), slurry pumps (torque boost at low speed for high-viscosity media), ventilation fans (mine atmosphere control, fail-safe speed hold). Compliant with MSHA electrical equipment guidelines.
Food & Beverage Processing
Conveyor indexing lines (precise speed synchronization, washdown-compatible panel), mixer drives (programmable speed profiles for batch recipes), packaging line feeders (encoder feedback for position-speed coordination). Supports FSMA process control documentation requirements.
Pulp, Paper & Printing
Winder/unwinder tension control (dancer roll feedback, torque regulation mode), stock pump drives (consistency control via flow feedback), dryer section rolls (speed-matched multi-drive line, ±0.1% speed regulation). Meets TAPPI process control benchmarks.
Technical Specifications
| Part Number | 1336F-BRF75-AE-DE |
| Series | Allen-Bradley 1336 PLUS II |
| Output Power | 75HP / 55kW (key for pump & fan sizing) |
| Input Voltage | 380–480V AC, 3-Phase, 50/60Hz |
| Output Frequency Range | 0–400Hz (supports high-speed spindle applications) |
| Output Current | 96A continuous (normal duty) / 105A (heavy duty) |
| Control Method | V/Hz, Sensorless Vector, Closed-Loop Vector |
| Speed Regulation | ±0.5% (open loop) / ±0.1% (closed loop) (critical for tension & synchronization) |
| Acceleration/Deceleration | 0.1–3600 sec programmable (eliminates mechanical shock at startup) |
| Built-in PID | Yes – 4–20mA / 0–10V setpoint input (enables closed-loop process control) |
| Communication | RS-485 / DH-485 / Remote I/O (option cards) |
| Protection Class | IP20 (chassis) / NEMA 1 (with enclosure option) |
| Ambient Temperature | 0°C to +50°C operating |
| Overload Capacity | 150% for 60 seconds (handles pump startup against closed valve) |
| Braking | Dynamic braking transistor built-in (resistor external) |
| Certifications | UL, CE, CSA |
| Weight | ~64 kg |
Why Engineers Specify This Model
- In municipal pump station applications, the 1336F-BRF75-AE-DE delivers closed-loop pressure regulation because its built-in PID accepts 4–20mA transducer feedback directly, meeting AWWA M45 pump system efficiency requirements without an external controller.
- In VAV air handling applications, the 1336F-BRF75-AE-DE delivers up to 50% fan energy reduction because affinity law speed control at 80% speed cuts power consumption to 51% of full-load, meeting ASHRAE 90.1 energy code requirements.
- In multi-drive conveyor applications, the 1336F-BRF75-AE-DE delivers ±0.1% speed synchronization because closed-loop vector control with encoder feedback maintains tight speed matching, meeting ISO 22200 material handling system requirements.
- In pipeline compressor applications, the 1336F-BRF75-AE-DE delivers controlled torque ramp-up because programmable S-curve acceleration prevents pressure surge (water hammer), meeting API 674 reciprocating pump protection requirements.
- In mining ventilation applications, the 1336F-BRF75-AE-DE delivers fail-safe speed hold on comms loss because its configurable fault response maintains last-commanded speed, meeting MSHA 30 CFR Part 75 ventilation continuity requirements.
- In food processing line applications, the 1336F-BRF75-AE-DE delivers repeatable batch speed profiles because 8 preset speeds with digital input selection enable recipe-driven motor control, meeting FSMA 21 CFR Part 117 process parameter documentation requirements.
Complete System Bill of Materials
For a complete 75HP VFD motor control system using the 1336F-BRF75-AE-DE:
- 1336F-BRF75-AE-DE – Main drive unit (this product) – core speed and torque control
- 1336-MOD-L2E / L3E – Communication option card – enables DeviceNet, EtherNet/IP, or DH+ integration with PLC/SCADA
- 1336-BRB75 – Dynamic braking resistor assembly – required for high-inertia loads (centrifuges, winders)
- 1321-3R75-B – 3% AC line reactor – reduces input harmonic distortion (THD) to <5%, protects drive from line transients
- 1336-MOD-HA2 – Human interface module (HIM) – local parameter programming and diagnostics display
- 1492-SPM1D060 – Motor circuit protector – upstream short-circuit protection per NEC 430.52
- 1336-GM-75 – Output filter / dV/dt filter – protects motor insulation on cable runs >30m, extends motor life
- 22-HIM-A3 – Remote HIM panel adapter – mounts operator interface on enclosure door
- 1336-PB-SP2 – Spare parts kit – fuses, control board battery, recommended for critical process installations
Compliance & Industry Standards
- UL 508C (Underwriters Laboratories) – Power conversion equipment listing; required for installation in North American facilities and insurance compliance
- CE Marking / EN 61800-3 (European Commission) – EMC compliance for variable speed drives; mandatory for EU market access and CE-marked machine integration
- CSA C22.2 No. 14 (Canadian Standards Association) – Industrial control equipment; required for Canadian facility installation and AHJ approval
- IEC 61800-5-1 (International Electrotechnical Commission) – Safety requirements for adjustable speed electrical power drive systems; referenced in global OEM machine safety documentation
- RoHS Directive 2011/65/EU – Restriction of hazardous substances; confirms product is free of lead, mercury, cadmium for EU environmental compliance
Quality Assurance & Sourcing
Sourcing Channels: Units are sourced from authorized Allen-Bradley distributors, certified industrial surplus channels, and decommissioned OEM equipment with full traceability documentation. All units are original Rockwell Automation manufacture — no counterfeit or remanufactured assemblies.
4-Step Inspection Process:
- Visual & Physical Inspection – Enclosure integrity, terminal condition, nameplate verification against part number, firmware label check
- Power-On Functional Test – Drive powers up, fault codes cleared, keypad/HIM communication verified, output voltage balance measured across all 3 phases
- Parameter & Firmware Verification – Factory default restore confirmed, firmware version logged, communication port response tested
- Load Test (where applicable) – Motor run test at 25%, 50%, and 100% speed setpoints; output current and frequency logged against specification
Documentation Available Upon Request: Original factory test report, inspection checklist, firmware version record, photos of unit serial number and nameplate, certificate of conformance.
How to Source This Part
- Submit Your Inquiry – Contact us via the form below or email support@konmask.com with your part number (1336F-BRF75-AE-DE), required quantity, and delivery timeline. Include your application details for compatibility confirmation.
- Receive Quote & Availability Confirmation – Our team responds within 24 hours with stock status, pricing, lead time, and shipping options. Expedited processing available for critical plant shutdowns.
- Order & Global Delivery – We ship worldwide via DHL, FedEx, and UPS Express. Export documentation (commercial invoice, packing list, COO) provided for all international shipments. Typical transit: 3–7 business days to most destinations.
Application-Specific FAQ
Q: Can the 1336F-BRF75-AE-DE be used for pump control with a 4–20mA pressure sensor feedback loop?
A: Yes. The drive’s built-in PID controller accepts a 4–20mA analog input directly on the standard I/O terminal block. In pump station applications, you connect the pressure transducer output to the analog input, configure the PID setpoint and gain parameters, and the drive automatically adjusts motor speed to maintain target system pressure — no external PLC PID block required for single-loop control.
Q: What is the maximum cable length between the 1336F-BRF75-AE-DE and the motor in conveyor drive applications?
A: For standard installations without an output filter, Rockwell Automation recommends a maximum motor cable length of 30 meters (100 ft) to limit dV/dt stress on motor insulation. For conveyor systems with longer cable runs (common in mining and material handling), install the 1336-GM-75 output filter at the drive output terminals — this extends the allowable cable length to 300+ meters and protects motor winding insulation from reflected wave voltage.
Q: Is the 1336F-BRF75-AE-DE compatible with Allen-Bradley PLC5 and ControlLogix systems for SCADA integration in oil & gas applications?
A: Yes. With the appropriate communication option card (1336-MOD-L2E for DH+ / Remote I/O, or the EtherNet/IP adapter for ControlLogix), the drive integrates natively into Rockwell Automation control architectures. In oil and gas SCADA applications, the drive can be polled for speed, current, fault status, and energy data via the PLC backplane or Ethernet network, enabling full remote monitoring and parameter adjustment without local access to the drive enclosure.
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