Tennant/Nobles Automatic Floor Scrubber Speed Control Board – Curtis Instruments 1208-2336, 24-36V DC Motor Controller for Scrubber Drive Systems

Tennant/Nobles Automatic Floor Scrubber Speed Control Board – Curtis Instruments 1208-2336, 24-36V DC Motor Controller for Scrubber Drive Systems

Condition: Good used condition. Unit shows light wear from previous installation; no burnt components or broken terminals. Fully intact with no visible corrosion or damage.

This is a Curtis Instruments 1208-2336 speed control board, designed as an OEM motor controller module for Tennant and Nobles automatic floor scrubbers. It is part of the Curtis 1208 series, which are separately excited (SepEx) motor controllers built for efficient traction control in floor care and light industrial electric vehicles. This unit delivers smooth, variable speed regulation and regenerative braking functionality for 24V–36V DC permanent magnet motors typically used in floor scrubber propulsion systems.
The 1208-2336 model is pre-programmed to meet the unique performance requirements of Tennant/Nobles equipment, making it an essential replacement part for restoring proper drive and maneuvering functionality in your scrubber. It supports forward and reverse drive, precise speed modulation, and programmable acceleration profiles to match operator or jobsite needs.

🔧 Features:
Manufacturer: Curtis Instruments
Model: 1208-2336
Voltage Range: 24–36V DC
Rated Current: Up to 275 Amps (peak)
Motor Type: Separately excited (SepEx) DC motor
Application Type: Traction control (drive motor)
Control Mode: Proportional speed control with regenerative braking
Regen Braking Support: Yes
Forward/Reverse Support: Yes
Diagnostic LEDs: Status/error indicators built-in
Mounting: Flanged base with multiple bolt holes
Cooling: Passive heatsink casing (no fan required)

🏭 Applications:
Tennant and Nobles automatic floor scrubbers
Electric floor care equipment
Walk-behind and ride-on scrubbers (specific models listed below)
Small electric utility or industrial vehicles
Material handling equipment using SepEx motor architecture

🔄 Cross-Referenced / Compatible Models:
This controller is found in or compatible with select Tennant/Nobles models such as:
Tennant T7 Ride-On Floor Scrubber (24V – drive system)
Nobles Speed Scrub Rider
Tennant 5680, 5700 (certain configurations)
Tennant/Nobles SSR
Cross-referenced Curtis part numbers or equivalents:
Curtis 1208-2322
Curtis 1208-2339
Curtis 1208-2440 (different programming, same family)
Some Genie or Nilfisk floor machines (verify motor specs)

📌 Comparable Products:
Curtis 1212-2402 – PM motor controller for smaller load applications
PG Drives VSI or R-net Control Modules – Alternative in higher-end mobility equipment
Sevcon Millipak 4Q – 4-quadrant motor controller for DC traction
Delta-Q motor controller modules – Integrated charging + motor control (not plug-compatible)

🧩 Part of Larger Systems:
This board is installed as the main traction motor controller in Tennant/Nobles scrubbers, forming part of:
Motor + Controller + Joystick/Pedal drive system
Regenerative braking loop connected to onboard batteries
Integrated diagnostic systems in CAN or analog-based control panels
It often operates alongside:
DC traction motor (~24–36V PM motor)
Onboard charger
Throttle/joystick control input
Safety switches and fault monitoring systems

⚠️ Trademark Disclaimer:
All product names, logos, brands, and other trademarks mentioned are the property of their respective owners. These names are used solely for identification purposes and do not imply endorsement or affiliation with Tennant, Nobles, or Curtis Instruments.

Related:
Curtis 1208 controller board
Tennant floor scrubber speed control
electric floor machine drive controller
24V traction motor controller
regenerative braking DC motor controller
Nobles ride-on scrubber parts module

Common Requests:
“Curtis 1208-2336 replacement for Tennant T7 scrubber”
“Used speed control module for Nobles SSR floor machine”
“DC motor controller 24-36V regenerative for floor scrubber”
“Curtis SepEx controller for walk-behind floor scrubber”
“Troubleshooting Curtis 1208 error codes”

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

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