Trimble IMD-900 Autosense Replacement Packout User Guide

: June 12, 2024
: Trimble

Table of Contents

Trimble IMD-900 Autosense Replacement Packout
Product Information
Product Usage Instructions
IMD-900 IMU Cabling
Set Up an IMD-900 using Precision-IQ
Set Up an IMD-900 using FmX Plus
Set Up an IMD-900 using Autopilot Toolbox II
For More Information
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Trimble IMD-900 Autosense Replacement Packout

Product Information

The product mentioned in the user manual is the IMD-900 IMU (Inertial Measurement Unit), which is used as an AutoSense steering sensor in agriculture. It is compatible with the following components and firmware versions:

NavController III: v13.75 or higher
TMX-2050TM firmware: v5.61 or higher
GFX-750 firmware: v1.61 or higher
Autopilot ToolBox: v4.50 or higher

The IMD-900 IMU cabling has been updated to use a 4-pin DTM connector for communication over CAN (Controller Area Network) instead of an analog signal. A bus needs to be developed between the NavController III and the IMD-900 IMU, with communication (CAN HI and LO) and power connections along with terminators on both ends of the branch.

The IMD-900 cabling kit (Part Number 57407-05) includes all the necessary parts for setup. It uses a 12-pin connector to plug into P12 and the associated terminator, along with an adapter cable and terminator for the IMD-900 IMU. The product can be mounted on a machine in the same manner as AutoSense. However, it’s important to note that the cabling for AutoSense and IMD-900 IMU are not interchangeable and plugging them into the wrong device should be avoided.

Product Usage Instructions

Set Up an IMD-900 using Precision-IQ
If you are using a GFX-750 display system with Precision-IQ, follow these options:

IMD-900 Cab Roll compensation: Use this option when the IMD-900 is intended for cab roll compensation with the NAV-900 internal IMU.
IMD-900 IMU Replacement: Use this option when the IMD-900 is to be used as the primary IMU instead of the NAV-900 internal IMU.
IMD-900 IMU Replacement with IMD-900 Cab Roll Compensation: Use this option when both the internal IMU in the NAV-900 will be replaced by an external IMD-900, and an additional IMD-900 will be used for cab roll compensation.
NavController III (IMD-900 steering sensor optional): Use this option when an external NavController III is being connected to the NAV-900. The guidance controls and IMU in the external NavController will be used in place of the internal NAV-900 controls and IMU. Note that an IMD-900 can optionally be connected to the external NavController III and used as a steering angle sensor.
NavController III with IMD-900 Cab Roll Compensation: Use this option when an external NavController III is being connected to the NAV-900. The guidance controls and IMU in the external NavController will be used in place of the internal NAV-900 controls and IMU. Additionally, an external IMD-900 can be connected to the external NavController for cab roll compensation. Note that a second IMD-900 can optionally be connected to the external NavController III and used as a steering angle sensor.

For detailed instructions on setting up an IMD-900 using Precision-IQ, visit http://agpartners.trimble.com.

Set Up an IMD-900 using FmX Plus
Instructions for setting up an IMD-900 using FmX Plus are not provided in the given text.

Set Up an IMD-900 using Autopilot Toolbox II
Instructions for setting up an IMD-900 using Autopilot Toolbox II are not provided in the given text.

IMD-900 IMU: Set Up as AutoSense Steering Sensor
The IMD-900 inertial measurement device (IMU) can be conﬁgured as a gyroscopic steering sensor for Autopilot™. Mounting of the device is very similar to the Trimble® AutoSense™ device. This document provides instructions for how to set up the IMD-900 IMU as an AutoSense steering sensor:

Precision-IQ™: GFX-750™ display system, TMX-2050™ display
FmX® Plus: TMX-2050™ display
Autopilot ToolBox II: CFX-750 display, FmX integrated display

IMD-900 Setup Requirements

IMD-900 IMU Cabling

The IMD-900 cabling, although similar using the 4-pin DTM, is no longer an analog signal into the NavController III, but rather communication is accomplished over CAN. With this conﬁguration, a bus must be developed between the NavController III and the IMD-900 IMU that has communications (CAN HI and LO) and power with terminators on both ends of the branch. The 57407-05 kit has all the parts necessary to complete the setup by using a 12-pin connector to plug into P12 and the terminator next to it. Additionally, the IMD-900 adapter cable and the associated terminator are on the other side:

Trimble-IMD-900-Autosense-Replacement-Packout-fig-1

The device is mounted on the machine in the same fashion as AutoSense. This example shows a setup that has both AutoSense and IMD-900 IMU as the steering sensor:

Caution!

Do not plug Autosense Steering Sensor cabling into an IMD-900 IMU.
Do not plug IMD-900 IMU cabling into an Autosense Steering Sensor.
The cables are not interchangeable.

Follow the instructions speciﬁc to the vehicle being installed on:

Set Up an IMD-900 using Precision-IQ
Set Up an IMD-900 using FmX Plus
Set Up an IMD-900 using Autopilot Toolbox II

Set Up an IMD-900 using Precision-IQ

Supported Displays: GFX-750 Display System, TMX-2050 Display

Verify that the display has the following version of Precision-IQ:
- TMX-2050: version 5.61 or higher.
- GFX-750: version 1.61 or higher.
On the Precision-IQ Home screen, tap the Vehicle tile. Then select a vehicle from the list of available vehicles and tap Edit. Tap Guidance and then Selection.
In the External Guidance Device ﬁeld, verify that the proper selection is made depending on the system being installed/updated – the example below has NavController III (IMD-900 Steering Sensor Optional) selected for an GFX-750/NAV-900 system using an external NavController III with an IMD-900 as a steering sensor.

Options vary between GFX-750 display systems and TMX-2050 display systems due to the NAV-900 with the GFX-750.

For a GFX-750 display system with Precision-IQ:

IMD-900 Cab Roll compensation: Use this when an IMD-900 is going to be used for cab roll compensation with the NAV-900 internal IMU
IMD-900 IMU Replacement: This option is used when an IMD-900 is to be used as the primary IMU instead of the NAV-900 internal IMU
IMD-900 IMU Replacement with IMD-900 Cab Roll Compensation: This option is used when both the internal IMU in the NAV-900 will be replaced by an external IMD-900 and an additional IMD-900 will be used for cab roll compensation
NavController III (IMD-900 steering sensor optional): This selection is used when an external NavController III is being connected to the NAV-900. The guidance controls and IMU in the external NavController will be used in place of the internal NAV-900 controls and IMU.
Note: An IMD-900 can optionally be connected to the external NavController III and be used as a steering angle sensor.
NavController III with IMD-900 Cab Roll Compensation: This selection is used when an external NavController III is being connected to the NAV-900. The guidance controls and IMU in the external NavController will be used in place of the internal NAV-900 controls and IMU. Additionally, an external IMD-900 is also connected to the external NavController to be used for cab roll compensation.
Note: A second IMD-900 can optionally be connected to the external NavController III and be used as a steering angle sensor.
None: This selection uses the internal controls and IMU from the NAV-900

For a TMX-2050 display with Precision-IQ:

None: NavController III internal IMU used as primary IMU. An IMD-900 can optionally be connected to the external NavController and be used as a steering angle sensor
IMD-900 Cab Roll Compensation: Use this when an IMD-900 is going to be used for cab roll compensation in association with the primary IMU in the NavController III.

Note:
A second IMD-900 can optionally be connected to the external NavController III and be used as a steering angle sensor.

Once the proper selection is made, tap Next.
On the Controller settings page, tap the Scan for IMUs button:
From the list of Detected IMU Units, select the serial number of the IMD-900 that is being used as a steering sensor:
Tap the IMU Purpose ﬁeld and select Wheel Angle Sensor from the pop-up window:
Tap Next.
On the Guidance Settings screen, verify that the normal steering sensor settings are correct for the vehicle:

Note:
The label containing the serial number is on the opposite side of the IMD-900 IMU vs Autosense.

When the IMD-900 is used as a steering sensor, an IMD-900 tab will show in the Diagnostics screen. Selecting the desired IMU will show its connection status:

Trimble-IMD-900-Autosense-Replacement-Packout-fig-8

Set Up an IMD-900 using FmX Plus

Supported Displays: TMX-2050 Display

Verify the following ﬁrmware versions:
- TMX-2050: v5.61 or higher.
- NavController III: v13.75 or higher
On the Vehicle Controller Setup screen, tap Steering. Then change the Steering Sensor Selection to IMD-900. Verify that the serial number of the IMD-900 is shown at the right:
If no serial number is displayed, then check cabling and NavController III ﬁrmware version.
Tap OK.
Under the Autopilot Diagnostics page, a tab for IMU data will populate. The Pitch and Roll angles will be N/A as these are not applicable for steering sensor implementations.
Just like AutoSense, the setup for the IMD-900 is in Autopilot calibration:
Set the proper wheel location and orientation as per legacy AutoSense setup:

Notes:

Since the IMD-900 is a CAN device as opposed to an analog signal, a pseudo-voltage is displayed as opposed to the actual sensor voltage in the diagnostics page.
When sitting still, the voltage value will read 0, and the steering angle will drift to the maximum angle (to one side – just like the current Autosense does). Upon movement, the voltage will ﬂuctuate based on rotations felt.

Set Up an IMD-900 using Autopilot Toolbox II

Supported Displays: CFC-750, FmX Integrated Display

Verify that the computer has version 4.50 or higher of AutoPilot Toolbox II installed:
Using a serial-to-USB cable, connect to the serial port on the 54602 cable.
Once the computer is connected to the NavController III, verify that the NavController III has version 13.75 or higher of ﬁrmware installed:
Click Setup & Diagnostics:
On the Autopilot Toolbox setup pop-up, under the Conﬁguration tab, select Wheel Angle Sensor, then click Edit:
Click the AutoSense tab, then update the following conﬁgurations:
- In the Installed Steering Angle Sensor section, select the IMD-900 option.
- In the Sensor Mounting Options, select the correct orientation of the IMD-900. The label on the IMD-900 is on the opposite side of the sensor from the old AutoSense sensor.
- In the IMD-900 Serial Number section, click the drop-down arrow and select the correct serial number for the IMD-900.

For More Information

Contact your local Trimble Regional Sales Manager.

Note:
Always check with the Trimble Store or contact your local Trimble Regional Sales Manager for the most current pricing and part number details.

Additional resources are available on learn.trimble.com. We invite you to register for a free learn.trimble.com account for access to a variety of training and instructional videos.
Exclusive training materials are available to authorized resellers. Contact trainingcf@trimble.com for details about access to the Partner catalog.

http://agpartners.trimble.com.

© 2022, Trimble Inc. All rights reserved. Trimble, the Globe & Triangle logo, and FmX are trademarks of Trimble Inc, registered in the United States and in other countries. CFX-750, GFX-750, TMX-2050, Autopilot, Precision-IQ, and AutoSense are trademarks of Trimble Inc. All other trademarks are the property of their respective owners.