Allen-Bradley 150-F85NBDB SMC Flex Smart Motor Controller / Soft Starter

Product Overview and Key Features

• The 150-F85NBDB is a versatile low-voltage soft starter from Allen-Bradley's SMC Flex series.
• This digital controller provides smooth acceleration and deceleration for three-phase induction motors up to 60 HP.
• It features a built-in 5-button keypad and a 3-line LCD for easy programming, diagnostics, and control.
• Four programmable auxiliary contacts offer flexible integration into your control system.

Detailed Technical Specifications

• Brand: Allen-Bradley
• Model: 150-F85NBDB
• Product Line: SMC-Flex Smart Motor Controller
• Controller Rating: 85 A, 60 HP at 460V AC
• Input Line Voltage: 200-460V AC, 3-Phase, 50/60 Hz (-15%/+10% tolerance)
• Rated Voltage: 460V AC
• Control Voltage: 200-240V AC
• Enclosure Type: Open Design
• Display: 3-line x 16-character LCD with backlight
• Weight: 12.00 lbs (5.44 kg)

Motor Compatibility and Ratings

• Compatible with both line-connected and delta-connected three-phase induction motors.
• For Line-Connected Motors: Current 17-85 A, Power up to 75 HP @ 575V AC.
• For Delta-Connected Motors: Current 29.4-147 A, Power up to 90 kW @ 500V AC.
• Selectable Overload Trip Classes: 10, 15, 20, or 30 for customized motor protection.

Operating Modes and Control Features

• Standard Modes: Soft Start, Full Voltage Start, Current Limit, Dual Ramp Start, and Soft Stop.
• Advanced Functions: Linear Speed Acceleration, Selectable Kickstart, and Preset Slow Speed.
• Optional Pump Control mode is available for centrifugal pump applications.
• Optional Smart Motor Braking (SMB) provides quick stopping without extra hardware.
• SMB braking current is adjustable from 0% to 400% of the motor's full-load current.

Protection and Diagnostics

• Integrated motor overload protection with adjustable trip classes.
• Comprehensive fault detection: underload, stall, jam, phase loss, and voltage unbalance.
• Power Circuit Protection: RC snubber network for dv/dt, 1400V peak inverse voltage rating.
• Optional 220-Joule Metal Oxide Varistor (MOV) for transient voltage suppression.
• Status indication for Stopped, Starting, Stopping, At Speed, Alarm, and Fault conditions.

Communication and Wiring

• Built-in DPI (Direct Programming Interface) capability for serial communication.
• Supports connection to Allen-Bradley Bulletin 20 Human Interface Modules (HIM).
• Power Terminal Sizes: Line side 2.5-95 mm² (14-3 AWG), Load side 2.5-50 mm² (14-1 AWG).
• Control circuit wiring: 0.8-2.5 mm² (18-14 AWG).

Package Contents and Shipping

• One Allen-Bradley 150-F85NBDB SMC Flex Controller unit.
• All necessary installation hardware and documentation.
• Worldwide shipping via FedEx, UPS, and DHL for reliable delivery.
• Product is carefully packaged to prevent damage during transport.

Frequently Asked Questions

• What is the keypad and display for? For local programming, real-time monitoring, diagnostics, and troubleshooting.
• Does it support pump applications? Yes, an optional Pump Control mode is available for centrifugal pumps.
• What is Smart Motor Braking (SMB)? An optional function that provides controlled, rapid stopping without a separate brake.
• What short-circuit protection is required? Use standard fuses, circuit breakers, or time-delay Class CC/J/L fuses up to 400A.
• What are the auxiliary contacts used for? Four fully programmable contacts for signaling Up-to-Speed, Fault, Alarm, or external bypass.

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