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Curtis Instruments 1212P - User Manual

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Manual
Electronic Motor Controllers
Read Instructions Carefully!
Specications are subject to change without notice.
© 2019 Curtis Instruments, Inc. ® Curtis is a registered trademark of Curtis Instruments, Inc.
© The design and appearance of the products depicted herein are the copyright of Curtis Instruments, Inc. 53112 Rev F Sep 2019
Curtis Instruments, Inc.
200 Kisco Avenue
Mt. Kisco, NY 10549
www.curtisinstruments.com
Models 1212 & 1212P

Table of Contents

Questions and Answers

  • W
    William SmithSep 23, 2025
    What does PUMP SRO FAULT mean on Curtis Instruments Controller [1212P]?
    • N
      Nicholas SpencerSep 23, 2025
      A PUMP SRO FAULT on the Curtis Instruments Controller [1212P] indicates that the pump switches were pressed before KSI was turned on. Make sure KSI is on before activating pump switches.
  • C
    cynthia03Aug 23, 2025
    What causes Curtis Instruments Controller OVERVOLTAGE FAULT and how to fix it?
    • L
      Laura JohnsonAug 23, 2025
      An OVERVOLTAGE FAULT on the Curtis Instruments Controller can occur if the battery voltage exceeds 31 volts, so lower the battery voltage. It may also happen if the vehicle is operating with the charger attached, so disconnect the charger. Finally, ensure a secure battery connection, as an intermittent connection can also trigger this fault.
  • T
    Taylor MartinAug 25, 2025
    Why Curtis Instruments Controller shows UNDERVOLTAGE FAULT?
    • R
      Robert BrownAug 25, 2025
      An UNDERVOLTAGE FAULT on the Curtis Instruments Controller typically occurs when the battery voltage drops below 17 volts, so charge the battery. It can also be caused by a bad connection at the battery or controller, so inspect and repair these connections.
  • M
    Michelle HoustonAug 26, 2025
    What to do if Curtis Instruments Controller shows THROTTLE FAULT?
    • B
      bailey81Aug 27, 2025
      If a Curtis Instruments Controller displays a THROTTLE FAULT, first inspect the throttle input wiring for any opens or shorts. Next, if the wiring is intact, the throttle pot may be defective and require replacement. Lastly, ensure that the correct throttle type is selected for the controller.
  • R
    Rachel CruzAug 27, 2025
    What causes Curtis Instruments Controller CURRENT SENSE FAULT?
    • K
      Kristin CastroAug 27, 2025
      A CURRENT SENSE FAULT in the Curtis Instruments Controller can be triggered by a short in the motor or motor wiring, so inspect for shorts in the motor or wiring. In some cases, this fault indicates a controller failure, so replace the controller if faulty.
  • J
    John JacksonSep 18, 2025
    What does EMR SEQUENCING FAULT mean on Curtis Instruments Controller [1212P]?
    • H
      hschaeferSep 18, 2025
      An EMR SEQUENCING FAULT on the Curtis Instruments Controller [1212P] indicates that the Emergency Reverse switch was pressed before KSI was turned on. Ensure the KSI is on before pressing the Emergency Reverse switch.
  • E
    Erik TerrellSep 15, 2025
    What does MOTOR STALLED mean on Curtis Instruments Controller [1212]?
    • J
      jeffery10Sep 15, 2025
      A MOTOR STALLED fault on the Curtis Instruments Controller [1212] means that the motor is stalled, so inspect the motor for any stalls.
  • W
    watsondavidSep 16, 2025
    What does MOTOR OPEN mean on Curtis Instruments Controller [1212]?
    • Z
      Zachary GomezSep 16, 2025
      A MOTOR OPEN fault on the Curtis Instruments Controller [1212] indicates that the motor wiring is open, so inspect and repair motor wiring.
  • J
    Jennifer MathewsSep 6, 2025
    What to do if Curtis Instruments Controller shows MAIN FAULT?
    • W
      wardjermaineSep 6, 2025
      If the Curtis Instruments Controller displays a MAIN FAULT, it could be due to a main contactor that is welded or stuck open, so replace the main contactor. Another possible cause is a fault in the main contactor driver, so inspect and repair or replace the main contactor driver.
  • B
    brianwalkerSep 3, 2025
    How to fix Curtis Instruments Controller BRAKE ON FAULT?
    • L
      Lance BrownSep 4, 2025
      To resolve a BRAKE ON FAULT on the Curtis Instruments Controller, first inspect and repair the electromagnetic brake driver if it is shorted. Also, inspect and replace the electromagnetic brake coil if it is open.

Summary

Overview

Smooth and Secure Control

Provides precise speed regulation, linear cutback, and proprietary algorithms for smooth operation.

Easy Installation and Setup

Highlights industry standard footprint, ease of programming, and robust wiring connections.

Valuable Additional Features

Lists features like optional push switch, push-too-fast, multi-mode, power saver, BDI output, etc.

Robust Safety and Reliability

Discusses RF immunity, continuous monitoring, and power-up checks for enhanced safety.

Regulatory Compliance

Lists standards the controllers are designed to meet, ensuring international compatibility.

1212 P Pallet Truck Features

Highlights specific features for pallet trucks, including BDI meter input and emergency reverse.

Installation and Wiring

Mounting the Controller

Guidelines for controller orientation and secure mounting using M4 screws.

High Current Connections

Details the four 1/4" Faston terminals for main high current connections.

Low Current Connections

Describes the 14-pin connector for low current logic control and other inputs/outputs.

Standard Wiring - 1212

Illustrates a typical installation for a DME application with a 3-wire potentiometer throttle.

Standard Wiring - 1212 P

Shows a typical installation for a pallet truck application with a Curtis electronic throttle.

Throttle Wiring Options

Explains compatibility with 3-wire potentiometers or voltage throttles and programming.

Switches and Hardware

Covers essential components like keyswitch, push/emergency reverse, mode, and emergency stop switches.

Battery Discharge Indicator (BDI)

Explains how the controller drives a BDI meter to display battery state of charge.

Charger Inhibit

Details how the controller inhibits drive functions when a battery charger is connected.

Speed Inhibit

Describes using a speed inhibit switch to limit or prevent vehicle drive under specific conditions.

Circuitry Protection

Recommends fuses for control and high power circuits to protect against shorts.

Status LED Diagnostics

Explains the use of the status LED for controller status indication and fault code diagnostics.

Horn and Lift Lockout Output

Details the horn driver and its use for lift lockout control or pump contactor activation.

Reverse Switch and Neutral Input

Covers reverse switch function and neutral input capability for 1212P models.

Programmable Parameters

Drive Menu Parameters

Lists parameters for controlling vehicle acceleration, deceleration, and speed settings.

Throttle Menu Parameters

Covers parameters related to throttle type, input signal, and response mapping.

Current Menu Parameters

Parameters for setting main, braking, and boost current limits for motor control.

Inhibit Menu Parameters

Parameters for controlling vehicle speed based on various inhibit input conditions.

Brake Menu Parameters

Parameters for brake delay, fault check, hold voltage, and brake light activation.

Horn Menu Parameters

Parameters for configuring audible fault codes and reverse beep functions.

Motor Menu Parameters

Parameters for motor resistance, speed scaling, current rating, and thermal cutback.

Stall Menu Parameters

Parameters for detecting and reporting motor stall conditions.

BDI Menu Parameters

Parameters for setting up and calibrating the Battery Discharge Indicator.

Compensation Menu Parameters

Parameters for IR compensation and anti-rollback control for improved performance.

Emergency Reverse Menu

Parameters specific to emergency reverse operation for 1212P models.

Miscellaneous Menu Parameters

Parameters for sleep mode, drive time logging, emergency stop, and pump SRO.

Monitor Menu

Temperature Monitoring

Displays the controller's internal temperature for operational status.

Battery and Motor Voltage Monitoring

Displays battery voltage and voltage drop between motor terminals.

Current and Limit Monitoring

Shows measured armature current and the controller's ultimate current limit.

Resistance and Throttle Input

Displays measured system resistance and available throttle input status.

Switch Status Inputs

Shows the status of various input switches: mode, reverse, inhibit, EMR, and push.

Contactor and Brake Status

Displays the status of the main contactor driver and the EM brake driver.

BDI and Drive Time

Displays battery capacity status and total hours of operation since last reset.

Initial Setup

Begin Setup Procedures

Instructions to put throttle in neutral and turn on controller and programming device.

Throttle Setup and Tuning

Procedures for setting throttle type and tuning neutral deadband for optimal response.

Neutral Deadband Tuning

Adjusts deadband for reliable neutral return and brake engagement.

Basic Vehicle Checkout

Verifies switch/pot inputs, options, charger inhibit, and performs final vehicle lowering.

System Resistance Setting

Procedure to accurately set the System Resistance parameter for proper load compensation.

Vehicle Performance Adjustment

Setting Maximum Speeds

Sets maximum forward/reverse speeds based on speed limit pot position.

Acceleration and Deceleration Rates

Defines acceleration/deceleration rates at speed limit pot endpoints for smooth control.

Load Compensation Adjustment

Sets IR Comp for disturbance rejection and Anti-Rollback Comp for hill-holding.

Response Smoothness Tuning

Adjusts Gear Soften, Soft Start, and Tremor Suppression for smoother vehicle operation.

Diagnostics and Troubleshooting

Programmer Diagnostics

Accessing diagnostic information via programmer display and controller fault history.

LED Diagnostics

Interpreting fault codes indicated by the status LED flashes for troubleshooting.

Fault Handling

Explains controller response to detected faults to ensure safe operation.

Maintenance

Diagnostic History

Accessing and clearing the controller's fault history file for routine maintenance.

Curtis Instruments 1212P Specifications

General IconGeneral
BrandCurtis Instruments
Model1212P
CategoryController
LanguageEnglish

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