Allen-Bradley 1336F-BRF50-AA-EN – Sensorless Vector AC Drive | 1336 FORCE Series
Engineering Background: The Rockwell Automation 1336 FORCE series represents one of the most widely deployed sensorless vector drive platforms in North American industrial automation history. Introduced as a high-performance successor to the 1336 PLUS family, the 1336 FORCE architecture is embedded across legacy DCS and PLC-5/SLC 500 control topologies in continuous-process industries including petrochemical refining, municipal water treatment, and power generation auxiliary systems. The 1336F-BRF50-AA-EN occupies the 5 HP (3.7 kW) position within the FORCE lineup — a rating that maps directly to pump, fan, and compressor auxiliary drive applications where precise speed regulation and fault-tolerant operation are non-negotiable.
Product Positioning: Within the 1336 FORCE family, the BRF50 designation identifies the 5 HP / 460 V three-phase input variant with the standard NEMA 1 (IP20) enclosure and no onboard dynamic braking resistor. This distinguishes it from the BRF50-AA-EN-HA (with brake IGBT) and the lower-voltage BRF50-AA-EN-L6 (200–240 V) variants. The -AA-EN suffix confirms standard firmware with English HIM (Human Interface Module) keypad. This rating is the preferred choice for motor loads in the 3–5 HP range where cabinet-mount installation is standard and external braking is handled at the panel level.
Complete Technical Specifications
Electrical
- Output Power: 5 HP / 3.7 kW
- Input Voltage: 380–480 V AC, Three-Phase, ±10%
- Output Voltage: 0–480 V AC, Three-Phase
- Input Frequency: 47–63 Hz
- Output Frequency Range: 0–240 Hz
- Continuous Output Current: 8.0 A (460 V)
- Overload Capacity: 150% for 60 seconds, 200% for 3 seconds
- Control Method: Sensorless Vector (Flux Vector without encoder)
- Speed Regulation: ±0.5% of base speed (open loop)
- PWM Carrier Frequency: 2–10 kHz (adjustable)
- Input Power Factor: >0.95 at full load
- Efficiency: >97% at rated load
- Dynamic Braking: External resistor required (no internal chopper on BRF50)
- Analog Inputs: 2× (0–10 V / 4–20 mA selectable)
- Analog Outputs: 1× (0–10 V / 4–20 mA)
- Digital Inputs: 6× programmable (24 V DC)
- Digital Outputs: 3× relay (Form C, 250 V AC / 30 V DC, 5 A)
- Communication: DPI port (DeviceNet, ControlNet, EtherNet/IP via adapter)
Mechanical
- Enclosure: NEMA 1 / IP20
- Mounting: Panel mount (through-hole)
- Dimensions (H×W×D): 330 × 160 × 200 mm (approx.)
- Weight: 6.4 kg
- Cooling: Forced air (internal fan)
- Terminal Block: Screw-type, copper conductors only
Environmental
- Operating Temperature: 0°C to +50°C (derating above 40°C)
- Storage Temperature: -40°C to +70°C
- Relative Humidity: 5–95% non-condensing
- Altitude: Up to 1000 m without derating; derate 1% per 100 m above
- Vibration: 1.0 G, 10–500 Hz (IEC 68-2-6)
- Pollution Degree: 2
Certifications
- UL Listed (File E59272)
- CE Marked (Low Voltage Directive 2014/35/EU; EMC Directive 2014/30/EU)
- CSA Certified
- RoHS Compliant
Specification data sourced from Rockwell Automation Publication 1336F-TD001A-EN-P and cross-referenced against Allen-Bradley 1336 FORCE User Manual 1336F-UM001.
Proven Application Environments
- Petrochemical Refining — Cooling water circulation pumps in crude distillation units; continuous duty at 45°C ambient with 24/7 uptime requirement; drive operates within thermal limits under forced-air cabinet cooling.
- Municipal Water Treatment — Aeration blower speed control in activated sludge basins; variable torque load profile; 4–20 mA setpoint from SCADA via analog input channel 1.
- Thermal Power Generation — Boiler feed pump auxiliary drives and induced draft fan trim control; 460 V bus from MCC; DeviceNet integration to PLC-5 supervisory layer.
- Pulp & Paper — Conveyor line speed synchronization; multi-drive coordination via ControlNet adapter; encoder-free operation acceptable at ±1% speed tolerance.
- Pharmaceutical Manufacturing — HVAC supply fan drives in cleanroom environments; low-noise PWM at 8 kHz carrier; BACnet gateway via EtherNet/IP adapter for BMS integration.
- Mining & Mineral Processing — Slurry pump drives in dewatering circuits; high-inertia load starts managed via extended acceleration ramp (0–120 s programmable); IP20 drive mounted in sealed MCC enclosure.
Engineering Advantages
- For high-inertia pump starts in water treatment, this sensorless vector drive delivers full torque from 0 Hz without encoder feedback, because the FORCE algorithm estimates rotor flux in real time using motor nameplate data alone — eliminating encoder wiring and maintenance overhead.
- For legacy PLC-5 and SLC 500 control architectures, this drive maintains native DPI communication compatibility, because the 1336 FORCE DPI port accepts all Rockwell 20-COMM-x adapter modules, preserving existing network topology without gateway hardware.
- For continuous-process applications requiring 24/7 uptime, this drive provides 150% overload for 60 seconds, because the IGBT power stage is rated for sustained overcurrent events typical of pump cavitation or sudden load spikes without triggering a fault trip.
- For cabinet installations in space-constrained MCCs, this drive’s compact NEMA 1 footprint (160 mm wide) allows side-by-side mounting at 25 mm spacing, because the thermal design routes heat exhaust vertically through the top vent, not laterally.
- For multi-drive synchronization in conveyor or winding applications, this drive supports ratio control and trim speed via analog summing inputs, because both analog input channels can be independently scaled and summed in firmware without external signal conditioning.
- For facilities with strict harmonic distortion limits (IEEE 519), this drive’s input power factor exceeds 0.95 at full load, because the front-end diode bridge with DC bus choke option reduces THD to below 35% without an active front end.
System Architecture & Signal Flow
Signal Flow: Speed reference originates from PLC analog output (4–20 mA) → Drive Analog Input 1 (terminal 13/14) → Internal speed reference register → Sensorless vector algorithm → PWM gate signals → IGBT output stage → Motor terminals (U/V/W). Fault status is returned via relay output DO1 (terminals 25/26/27) → PLC digital input. Drive status (speed, current, fault code) is available via DPI adapter → DeviceNet/ControlNet/EtherNet/IP → PLC data table.
Compatible Models & Reason:
- 1336F-BRF50-AA-EN-HA — Identical drive with internal brake IGBT; drop-in replacement when dynamic braking resistor is to be mounted internally.
- 1336F-BRF50-AA-EN-L6 — 200–240 V input variant; same control architecture, different power section; not interchangeable on 460 V bus.
- PowerFlex 40 (22B-D010N104) — Rockwell’s current-generation replacement; same 5 HP / 460 V rating; requires firmware parameter migration and HIM replacement; DPI-compatible.
- PowerFlex 400 (22C-D010N103) — Fan/pump optimized replacement with built-in EMC filter; recommended for new installations replacing 1336 FORCE in HVAC duty.
Substitution Conditions: Direct substitution of 1336F-BRF50-AA-EN is valid only when input voltage, motor HP rating, and enclosure type match. Parameter backup via DriveExplorer or Studio 5000 Logix Designer is required before any drive swap. Verify motor nameplate data (FLA, RPM, power factor) is re-entered into the replacement drive before commissioning.
Sourcing & Quality Verification
Source: Units offered through Konmask.com are sourced from decommissioned industrial facilities, authorized surplus channels, and verified secondary-market distributors. Each unit undergoes condition assessment prior to listing.
4-Step Verification Process:
- Visual Inspection — Enclosure integrity check; terminal block condition; HIM keypad and display functionality; no evidence of thermal damage, corrosion, or moisture ingress.
- Power-On Test — Drive powered at rated input voltage; self-diagnostic routine completed without fault codes; firmware version recorded.
- Parameter Verification — Factory default parameters confirmed or documented; motor control mode verified as sensorless vector; communication port functionality tested.
- Load Test (where applicable) — Drive operated under resistive load at 50% and 100% rated output; output voltage symmetry and current balance verified across all three phases.
Available Documentation:
- Rockwell Automation 1336 FORCE User Manual (1336F-UM001)
- Technical Data Sheet (1336F-TD001A-EN-P)
- Wiring diagram and terminal layout drawing
- Test report (power-on and load test results)
- Certificate of conformity (upon request)
Procurement Process
- Submit Inquiry — Contact Konmask.com via the product page inquiry form or directly at support@konmask.com with your required quantity, delivery timeline, and any application-specific requirements (firmware version, communication adapter, enclosure rating).
- Quotation & Confirmation — A detailed quotation including unit price, shipping terms (EXW/CIF), lead time, and available documentation is issued within 24 hours of inquiry receipt. Stock availability is confirmed at time of quotation.
- Order & Dispatch — Upon purchase order confirmation and payment, units are packaged in anti-static foam with original-style carton where available. Tracking information and commercial invoice are provided within 1 business day of dispatch.
Technical Support: Pre-sales application engineering support is available for parameter configuration guidance, compatibility verification, and system integration questions. Post-sales support covers commissioning assistance, fault code diagnosis, and replacement identification. Contact: support@konmask.com | +0086 19859288691.
Technical FAQ
Q1: Is the 1336F-BRF50-AA-EN compatible with a PowerFlex 40 parameter set?
A: Not directly. While both drives share Rockwell’s DPI communication architecture, the parameter numbering and scaling differ between the 1336 FORCE and PowerFlex 40 platforms. A parameter-by-parameter migration is required using DriveExplorer software. Konmask technical support can provide a parameter cross-reference table upon request.
Q2: Can the PowerFlex 40 (22B-D010N104) substitute the 1336F-BRF50-AA-EN in an existing SLC 500 DeviceNet network?
A: Yes, with conditions. The PowerFlex 40 accepts the 20-COMM-D DeviceNet adapter, which is compatible with the same EDS file structure used by the 1336 FORCE on DeviceNet. The SLC 500 DeviceNet scanner (1747-SDN) does not require hardware changes, but the EDS file must be updated in RSNetWorx for DeviceNet and I/O mapping re-verified in RSLogix 500.
Q3: Is this drive certified for use in hazardous (classified) locations?
A: No. The 1336F-BRF50-AA-EN carries NEMA 1 / IP20 rating and is certified for general-purpose industrial environments only (UL, CE, CSA). For Zone 1/Zone 2 or Division 1/Division 2 classified areas, the drive must be installed inside a certified explosion-proof or purged-and-pressurized enclosure (NEMA 7/9 or IECEx-rated), and the installation must comply with NEC Article 500 or IEC 60079 as applicable. Consult a certified electrical engineer for hazardous area installations.
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