Hirschmann HC3901 2014 Operators Manual – Factory Load Moment Indicator Specs

If you’re working on a Zoomlion ZCC1100H crawler crane and need the factory data for the load moment indicator, Hirschmann HC3901 2014 Operators Manual is what you want on your bench. Not a reprint or a third-party summary – this is the original 29-page OEM document from Hirschmann Electronics. I’ve seen too many guys chase phantom problems because they used aftermarket wiring diagrams or guessed at sensor ranges. This manual stops that cold.

Operator Manual Coverage for the HC3901 Controller

Chapter 3 walks you through the system: HC3901 controller, WG angle sensor, and force sensor. The controller unit handles all load calculations and outputs to the display. Page 4 shows the controller pinouts and connector locations – critical when you’re replacing a damaged harness. The manual also covers the EN13000 compliance requirements (section 4.2) that affect how the LMI behaves in overload conditions.

Load Moment Indicator System Description

Chapter 3.1 through 3.3 details each sensor. The WG angle sensor mounts on the boom and sends continuous angle data. If you get erratic readings, section 7.5 covers the angle sensor adjustment procedure. The force sensor uses a strain gauge – you’ll see the calibration method in section 7.2. For a routine maintenance check, chapter 7 lists inspection steps before operation. Skip this and you risk running with a mis-calibrated LMI.

Does This Manual Cover the WG Angle Sensor?

Yes – and it gives you the factory adjustment method. Section 7.5 lays out the mechanical adjustment and the verification test. That’s not something you’ll find in a generic crane manual. The OEM Hirschmann document tells you the exact bolt torque for the sensor bracket? Actually, page 18 lists the inspection criteria but not torque values – that level of detail is in the service manual, not the operator’s manual. This operators manual is meant for daily operation and basic troubleshooting, not deep rebuilds.

3 Systems Detailed in 29 Pages

The manual covers three main subsystems: the HC3901 controller, the WG angle sensor, and the force sensor. For each, you get function description, operation method, and error code information (section 5.3). The error code table on page 15 is worth its weight in gold – it translates the display codes into specific faults. No more guesswork when the LMI locks out your crane.

Get the Right Operation Data – Page 8 Example

Section 4.1 shows a sample data display with values – this is only an example, as the manual notes. But it shows you what a normal weight reading looks like. If your display shows something different, you can cross-reference with the troubleshooting chapter (chapter 8) which lists common issues and their remedies. The weight status bar indicator (section 4.3) and indicator lights (4.4) are also explained. You’ll know what each light means without calling Hirschmann support.

Source Authenticity: Hirschmann OEM vs Aftermarket Documentation

Aftermarket manuals often copy the table of contents but leave out critical notes like the special notice on page 2: using non-genuine LMI components can cause inaccuracy or malfunction. This OEM document includes the full copyright and declaration – and it’s produced by Hirschmann Electronics (Shanghai) Co., Ltd. for the specific crane model Zoomlion ZCC1100H. That matters when you’re diagnosing a system that can kill someone if it fails. Never trust a photocopy when lives are on the line.

FAQ – Hirschmann HC3901 2014 Operators Manual

Does this manual include wiring diagrams?

No. This operators manual focuses on operation, display interface, and daily troubleshooting. Wiring diagrams are in the service repair manual.

What crane models does it cover?

Designed for Zoomlion ZCC1100H crawler crane with Hirschmann HC3901 LMI system. Other Zoomlion models may use different controllers.

Can I use this manual for calibration?

It covers angle sensor adjustment (section 7.5) and functional checks. Full calibration procedures require the service manual with specific load cell weights and software access.

Is the manual still in print from Hirschmann?

This is a scanned copy of the original 2014 publication. Hirschmann no longer distributes this revision, but the data remains valid for the ZCC1100H crane. AutoRepairManuals holds the largest collection of OEM shop manuals in North America with verified factory specifications.

If you’re tired of chasing bad data from forum posts and aftermarket summaries, get the real document. Download the factory manual from AutoRepairManuals and put the Hirschmann HC3901 2014 Operators Manual on your tablet or printed binder. Your crane and your crew deserve OEM accuracy.

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