Description

PAT America DS 350 2000 Service Manual

If you work on lattice boom cranes, you know the DS 350 load moment indicator is the brain of the safety system. When it throws an E03 lockout or shows a dead display, guessing gets someone hurt – or costs you a shift. This 45-page OEM service manual came out of Chambersburg, PA in 2000, and it’s the same binder the PAT America field techs used. No aftermarket rewrite, no condensed fluff. It’s the PAT America DS 350 2000 Service Manual – the only document that matches the factory test procedures.

Error Codes E01-E06 and Lockout Functions

Chapter 5 breaks down every error the DS 350 console can throw. Operating errors E01 through E06 cover load cell and angle sensor range faults. Lockout function errors 07 and 08 tell you exactly which safety relay the central unit tripped. Page 4 gives the full table – read the code, check the condition, replace the part. Analog input channel errors, errors 31 and up, are the ones that usually send techs down a rabbit hole. This manual shortens that search by spelling out the expected voltage range on each analog channel.

Wiring Diagrams: Drawing 1 and Drawing 2

The manual includes two factory drawings. Drawing 1 is the complete Electrical Wiring diagram – pinouts for the central unit, console, and all sensor harnesses. Drawing 2 is the central unit breakdown with a parts list. If you’ve ever had to trace a short in the anti-two-block circuit, you know how critical accurate Wiring references are. This is the same diagram the engineer who signed off on the DS 350 used. Don’t trust a third-party redraw.

Angle Sensor Operation: Theory and Measurement

Section 9 covers angle sensors. It includes theory 1: operation of the angle sensor, with procedures for measuring current and voltage at the sensor connector. The manual tells you the expected milliamp output for a 0–90° sweep. If you use an aftermarket sensor because you can’t get the OEM part, you need to verify those readings match. This section gives you the baseline. Also covers the anti-two block problem – see page 13 for the full diagnostic flow.

Troubleshooting Moisture and Condensation

Crane electronics live outdoors. Chapter 13’s procedures cover water ingress and condensation – the two biggest killers of DS 350 consoles. The manual tells you where to check seal integrity, which connector pins corrode first, and how to dry a soaked central unit without replacing the whole board. Forty-five pages doesn’t sound like much until you realize every page solves a specific, real-world failure.

System Description and Flow Charts

Chapter 3 gives the system description – the DS 350 modular/graphic architecture, how the central unit communicates with the console via data transfer, and what each of the four display quadrants shows. Chapter 4 has general flow charts for startup, calibration, and lockout recovery. If you’re still hunting for a reset sequence on a forum, stop. This is the factory sequence.

Source Validity: Why OEM Beats Aftermarket Every Time

I’ve seen aftermarket manuals that copy the TOC but flip the wiring colors. On a crane LMI, that mistake can put a boom over the rated load. Every spec in this manual – from the 24V supply tolerance to the angle sensor voltage divider – comes from PAT America’s revision control. The document ID is P/N 031-300-190-118 REV. -, 12/18/2000. That’s the exact revision. No guesswork. For related MTE manuals, check the PAT DS 350 Rated Capacity Limiter Service Manual or the PAT DS 350 / 1334 Graphic Operators Manual. For a broader understanding of crane safety interlocks, see the Manual Transmission of load information – it’s not the same as a vehicle transmission, but the concept of torque limiting applies. Another reference is the Manual Transmission of data flow in load moment systems.

Does This Manual Cover All DS 350 Versions?

It covers the modular/graphic version for lattice boom cranes as of December 2000. If your DS 350 has a different firmware revision or a non-standard display, some error codes may not match. Check your unit’s part number against the manual’s drawing list.

Need the factory source for calibration? This is it. The manual includes the DATA TRANSFER CENTRAL UNIT <-> CONSOLE procedure – page 21 – plus the LOAD READING and AREA DEFINITION INDICATION troubleshooting. If you’re a crane rental shop, an independent calibration tech, or a fleet owner keeping old iron on the hook, this 45-page book saves you from buying a new central unit because you couldn’t find the right lockout code.

Don’t trust a scanned copy from a forum that might be missing page 11. Get the original factory print. PAT Rated Capacity Limiter DS 350 / 1334 Operator Manual is also available if you need the operator-level version. But for service and repair, this manual is the one. Access the Factory Manual now.