JetCat P550-PRO User Manual

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05/2019

Operating instructions

JetCat PRO Engines

Table of Contents

Default Chapter2
- Table of Contents2
Introduction4
Features5
Safety, Meaning of Symbols7
Safety Precautions7
- Hazard Areas9
  - Hazard Areas on Engine Startup and Idle Operation9
  - Hazard Areas on Engine Idle +20% to Full Power Operation10
Mounting / Fixing of the Engine11
Connections on the Engine, Overview12
- Data Connector (A)13
- Power Connector (B)15
- Power Supply15
- Expansion Connector (C)16
- Fuel Connector Port17
  - Fuel17
  - Fuel Connection Diagram, Standard17
- Bleed Air Port (Optional) ; Pressurization of Fuel Tank18
  - Fuel Connection Diagram, Pressurized Fuel Tank18
Jetcat Pro-Interface19
- Connection Overview, PRO-Interface20
- System Connection Diagram with Pro-Interface23
  - Connection Diagram A); Direct Battery Connection23
  - Connection Diagram B); Battery Connection Via PRO-Interface24
Ground Support Unit (Gsu)25
- Connection of Gsu25
  - A) GSU Connects to Engine Sided 4-Pin Molex Connector25
  - B) GSU Connects to the Jetcat PRO-Interface25
- Gsu Control Panel Descriptions26
  - GSU Button Descriptions27
  - Description of Leds on the GSU27
Operation Modes28
- Industrial Operation Mode, Normal Altitude28
- Ndustrial Operation Mode Igh Altitude Without Altitude Controlled Low Rpm Governing28
- Ndustrial Operation Mode Igh Altitude with Altitude Controlled Low Rpm Governing28
- Operation Mode for Propulsion of RC-Models28
- Setup/Adjustment of the Operation Mode28
Engine Power On/Off29
- Power on Via RC-Signal from Receiver29
Engine Control30
- Control Options30
- Control Via Serial Bus (Com1)39
- Control Via Can-Bus39
Preparing Fuel and Fuel System39
- Prime the Pump and System40
Running the Engine for the First Time41
- Initial Adjustments41
- The Checklist41
Gsu (Run Menu Default) Display Symbols43
- Initial Default Display Screen after Power up43
- Fter Power up Error Condition Display Screen43
- Engine Starting Display Screen44
- Engine Running Display Screen44
Engine Running States45
- Explanation of the Engine States45
Troubleshooting48
- Most Frequent Errors48
  - Ost Frequent Errors Ause and Remedy48
- Reason for an Unexpected Shut-Down49
Manual Advanced Section50
- Smoker Pump50
Menu Structure51
- Menu Selections51
  - Selecting a Menu51
  - Change Values / Items51
- The Run Menu52
- The Min/Max Menu52
- The R/C Check Menu53
- The Info Menu54
- The Statistic-Menu55
- The Limits Menu56
Special Functions64
- Temperature Calibration64
- Reset to Default Values65
Firmware Update66
Jetcat Three Year Limited Warranty69

Questions and Answers:

K
Katie CookAug 5, 2025
What to do if the JetCat Engine starting process fails?
- V
  Valerie JohnsonAug 5, 2025
  If the JetCat Engine starting process fails, it could be due to several reasons. The turbine might still be too warm, so wait until the SlowDown sequence finishes and the green OK LED stops blinking. Alternatively, the battery could be low or have a faulty connection, so charge the battery and check the ECU's battery connection. A defective glow plug (indicated by a blinking red Pump running LED) would need replacement. Finally, ensure the three-conductor cable for the starter motor and glow plug is properly connected from the ECU to the engine.
T
tranchristopherAug 10, 2025
Why doesn't my JetCat Engine turbine ignite?
- H
  Hannah RayAug 10, 2025
  If the JetCat Engine turbine doesn't ignite, the fuel supply lines may be empty or not purged, so purge the fuel system. Another possibility is a weak or empty ECU battery, so charge the ECU battery. If the kero start igniter has failed, call JetCat for information.
M
Michael McbrideAug 13, 2025
What to do if the JetCat Engine ignites, but the start process stops?
- D
  davidsolomonAug 13, 2025
  If the JetCat Engine turbine ignites but the start process is discontinued, there may be air in the fuel feed lines. Examine all Festo fittings, nipples, clunk, and the filter. Another potential cause is the fuel pump not running. Test the pump in the Test Functions menu; the fuel pump must run as soon as the red Pump running LED illuminates.
K
Kelly MasseyAug 18, 2025
How to fix ECU if it doesn't follow transmitter commands on my JetCat Engine?
- T
  Tina WilsonAug 18, 2025
  If the JetCat Engine ECU doesn't follow full commands from the transmitter, the programming may be altered in the R/C throttle stick. Check alignment with the RC-Check menu and re-align the ECU to the R/C system.
E
erica79Aug 22, 2025
What causes a Watchdog Failure and how do I fix it on my JetCat Engine?
- T
  tara54Aug 22, 2025
  If the JetCat Engine turbine quits with a Watchdog Failure, reset the ECU. Also, do not mount the ECU directly to the fiberglass body of the plane; use a plywood mount with a layer of foam tape and Velcro between the body and the ECU.
B
batesmarkAug 27, 2025
How to stop my JetCat Engine starter unit from slipping and making noise?
- J
  Joshua Callahan Jr.Aug 27, 2025
  If the JetCat Engine starter unit slips and makes noise, it's likely due to dust and oil sediment on the compressor nut and O-ring. Clean the O-ring and compressor nut periodically with a cotton swab and solvent.
T
Taylor McfarlandAug 31, 2025
Why is my JetCat Engine EGT giving erratic readings?
- S
  samuelcainAug 31, 2025
  If the JetCat Engine EGT is giving erratic temperature or RPM readings, the transmitter antenna may be too close to the model. Keep the antenna away from the model, as this may cause false readings.

JetCat P550-PRO Specifications

General

Thrust	550 N
Maintenance Interval	50 hours
RPM Range	30, 000 rpm
Fuel Type	Jet A1
Control	ECU

Summary

JetCat PRO Engine Features

Safety and Precautions

Meaning of Safety Symbols

Explains warning symbols used in the manual for safe operation and potential hazards.

General Safety Precautions

Crucial safety advice, legal aspects, operating distance guidelines, and prohibited activities.

Hazard Areas During Operation

Startup and Idle Hazard Zones

Defines safety zones around the engine during startup and idle phases.

High Power Hazard Zones

Defines safety zones during engine idle +20% to full power operation.

Engine Connections Overview

Data Connector (A) Pinout

Power Connector (B) Details

JetCat PRO-Interface Overview

RC Control, Telemetry, and Airspeed

CAN-Bus and Serial Port Communication

Ground Support Unit (GSU) Overview

GSU Connection Methods

Explains the two methods for connecting the GSU to the engine or PRO-Interface.

GSU Control Panel and Button Functions

GSU Button Functionality Details

Details the function of each button on the GSU control panel.

GSU LED Status Indicators

Engine Operation Modes

RC Model Operation Mode

Engine Power ON/OFF Control

Engine Control Methods

Control Options Overview

Lists multiple ways to control the engine, including GSU, analog, PWM, serial, and CAN-Bus.

Engine Control via GSU

Detailed explanation of how to control the engine using the GSU.

Analog Signal Throttle Control

Servo-PWM Signal Control

Single Channel Operation Setup

Failsafe Mode Setup and Configuration

Teaching ECU to R/C System

Failsafe Programming Verification

Throttle Curve Adjustment

Fuel System Preparation and Safety

First Engine Run Procedures

Initial Setup Adjustments

Pre-Run Checklist

A detailed list of checks before running the engine, including fire extinguisher and fuel lines.

Engine Start and Stop Procedures

Procedures for starting and stopping the engine in single and two-channel modes.

Automatic Engine Cooling Process

GSU Display Symbols and Screens

Default GSU Display Screens

GSU Engine State Displays

Engine Running States Explained

Troubleshooting Common Engine Errors

Diagnosing Engine Shut-Downs

RUN Menu Parameters

Diagnostic Menus: Min/Max and RC Check

Min/Max Diagnostic Menu

RC Input Check Menu

INFO Menu Data Display

Statistic Menu Data Tracking

LIMITS Menu Parameter Adjustments

LIMITS Menu: Operation and Throttle Settings

Operation Mode and Throttle Control

Selects operating mode and sets throttle control input and response.

Auto-Restart and Speed Settings

Special Functions: Temperature Calibration

Reset to Default Values

Firmware Update Procedure

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