Description

Hirschmann PAT DS 350, IFLEX5 2008 Operators Manual

You are working on a crane with a load moment indicator that keeps throwing false warnings. The aftermarket PDF you obtained says “refer to manufacturer” for half the setup steps. That’s not a manual—that’s a placemat. This Hirschmann PAT DS 350, IFLEX5 2008 Operators Manual is the actual factory document used by guys who certify these systems. It is 46 pages of OEM procedures, not guesses. If you skip calibration on a LMI, you are betting someone’s life on a random number. That doesn’t fly in my shop.

System Description: IFLEX5 Console and Control Identification

Section 3 of this manual walks through the whole system architecture—vertical/horizontal console, control functions, and what each button actually does. Section 3.3 labels every switch and LED on the PAT DS 350. I have seen guys dig through third-party diagrams and wire something backward. With this OEM book, you get the exact pinout and function from Hirschmann. No translation errors.

LMI Setup Procedure – Factory Steps Only

Chapter 4 is where most screwups happen. Section 4.1 covers the LMI setup procedure—entering the reeving, hoist line selection, and boom configuration. If your load chart says 73,500 lbs max and you input the wrong reeving, the indicator will let you lift past safe capacity. That is how booms fold. Page 15 (Section 4.2) gives the quick setting of the reeving. Use it. Don’t guess.

Limit Settings: Tip Height, Radius, and Wind Speed

Section 5.1 splits limit settings into five sub-procedures. Slewing angle limitation (5.1.1), tip height limitation (5.1.2), boom angle limitation (5.1.3), radius limitation (5.1.4), and wind speed (5.1.5). Each one tells you the exact key sequence to program the IFLEX5. The tip height limit procedure on page 26 is something I check before any pick near power lines. Wind speed on page 30—if your anemometer isn’t calibrated, the system won’t warn you until it’s too late. This manual gives the factory verification steps.

Pre-Operation Inspection – Don’t Skip This

Section 6 is two pages of steps that separate a safe lift from an incident. It covers machines with only a main hoist versus main and auxiliary hoists. Section 6.3 shows how to install the anti two-block retainer in locking position. Section 6.5 walks through the pre-operation inspection and calibration verification. I do this checklist every Monday morning on the 50-tonner. Takes ten minutes, keeps the OSHA inspector happy and the crew alive.

Source Validity: OEM vs. Aftermarket Documentation

This is a direct OEM Operators Manual from Hirschmann, revision E dated 11/12/2008. It is not a reprint, not a scan that lost bleed-through, not a generic “fits all” PDF. The table of contents matches the page numbers exactly. If you have been using a photocopy of a photocopy, you are missing the revision history and the calibration verification checklist. I only trust factory docs for load indicators. Anything else is speculation.

If you need a different system, check the Hirschmann PRS 40 EZ 2010 Operators Manual – Factory Specs”>Hirschmann PRS 40 EZ manual or the Hirschmann iSCOUT expert compact 2007 Operators Manual – Factory Crane Specs”>iSCOUT expert compact manual for smaller cranes. For a different load indicator series, the Hirschmann PAT PRS 80 2005 Operators Manual – Factory Specs for Crane Load Indic”>PAT PRS 80 manual covers similar logic.

One external reference worth reading is the basics of load moment and Manual Transmission”>Manual Transmission of torque—not directly related, but understanding how force transfers helps when you are setting limit switches.

Troubleshooting: Section 8 Malfunction Table

When the display goes blank or the alarm stays on, you need the malfunction table on page 37. Section 8.2 lists operating errors and probable causes. No flow charts, no vague “check wiring”—specific codes and the fix. The table is short but covers the common failures I have seen on IFLEX5 units: console lockups, sensor out-of-range, and reeving mismatches.

FAQ

Does this manual include troubleshooting codes?

Yes. Section 8.2 has a malfunction table with fault descriptions and corrective actions. It is not a full diagnostic tree, but it covers the errors you will encounter on the DS 350 and IFLEX5 consoles.

Can I use this manual for PAT PRS 40 or other models?

No. This manual is specific to the PAT DS 350 and IFLEX5 consoles only. Hirschmann changed the key sequences, wiring, and limit setup across model lines. Using this on a PRS 40 will give you wrong reeving data and incorrect load limits. Buy the dedicated Hirschmann PRS 40 EZ 2010 Operators Manual – Factory Specs”>PRS 40 manual if that is what you have. Mixing manuals on an LMI is like using a spark plug gap spec from a Ford book on a Chevy—it will run, but not safely.

If you operate or maintain a crane with a PAT DS 350 or IFLEX5 load moment indicator, you need this document on the console or in the truck. The setup procedures, limit settings, and verification steps are not optional. Access the Factory Manual from AutoRepairManuals and keep the OEM data at arm’s reach.