Related Manuals for RS Flight Systems EMU 912iS evo
Summary of Contents for RS Flight Systems EMU 912iS evo
- Page 1 Installation / Operation Manual EMU 912iS evo / EMU 9xiS Engine Management Unit Version: 3.0 © Copyright 2025 RS Flight Systems GmbH...
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Page 2: Table Of Contents
................................. 1 Preface ..............................3 System Description ...........................3 Technical Specifications ........................5 Mechanical Installation ........................7 Drawings EMU 912iS evo .......................8 Drawings EMU 9xiS ........................9 Electrical Installation ........................10 Lane A / Lane B Connector ....................11 Auxiliary Connector ....................... 11 RS-232 Connector ....................... 13 Available Accessories ...................... -
Page 3: Preface
Preface Thank you for purchasing an RS Flight Systems Engine Management Unit. We are pleased that you have chosen our product and are confident that it will meet all your expectations. In case of questions or problems with the unit, feel free to contact us:... - Page 4 Figure 2-1: EMU 912iS evo Figure 2-2: EMU 9xiS 30.03.2025 | V3.0 Installation / Operation Manual Engine Management Unit...
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Page 5: Technical Specifications
Technical Specifications EMU 912 iS evo EMU 9xiS Mechanical 146 x 120 x 82 mm 139 x 104.5 x 78 mm Dimensions 5.75 x 4.72 x 3.23 in 5.47 x 4.11 x 3.07 in (width, height, depth) 128 x 116 mm 127 x 103 mm Panel Cutout 5.04 x 4.57 in... - Page 6 30.03.2025 | V3.0 Installation / Operation Manual Engine Management Unit...
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Page 7: Mechanical Installation
Mechanical Installation Upon delivery, undertake visual inspection of the package contents for signs of transport damage and verify the information on the type plate sticker against your order. Do not open the device housing. For longer storage of the device, select a dry and clean environment. Make sure that the device is not stored near strong heat sources and that no metal chippings or other dirt can get into the device or its connectors. -
Page 8: Drawings Emu 912Is Evo
Drawings EMU 912iS evo Figure 4-1: EMU 912iS evo (front/side view) Figure 4-2: EMU 912iS evo (isometric view) 30.03.2025 | V3.0 Installation / Operation Manual Engine Management Unit... -
Page 9: Drawings Emu 9Xis
Drawings EMU 9xiS Figure 4-3: EMU 9xiS (front/side view) Figure 4-4: EMU 9xiS (isometric view) Installation / Operation Manual 30.03.2025 | V3.0 Engine Management Unit... -
Page 10: Electrical Installation
AS27500. AWG22 (0.34 mm²) is a sufficient cross section for power supply of the EMU. Preassembled wiring harnesses are available as an accessory for simplifying the installation. For part numbers see Chapter 5.4 or contact RS Flight Systems directly. Figure 5-3 shows an overview of all standard connections. -
Page 11: Lane A / Lane B Connector
Lane A / Lane B Connector Lane A Connector carries the power supply pins of the EMU (Pins 1 and 5) and Display CAN Lane A (Pins 2 and 7). Table 5-2 specifies its pinout. Reverse polarity and voltage surge protection are implemented on the Lane A connector, therefore power must be supplied there. - Page 12 MOTOR+ and MOTOR- pins (function available on request). This function is called Single Lever Power Control (SLPC). The exact variant of the governor depends on the specific aircraft configuration. Please contact RS Flight Systems for further details. A prewired harness is available as an accessory (see Chapter 5.4).
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Page 13: Rs-232 Connector
For higher serial numbers, this modification is integrated in the EMU and the 390 Ohm resistor must not be installed. The power supply for the P-853-XX governor is related to the input voltage of the EMU. If the EMU is supplied with 12 VDC, a 12 VDC governor must be used (e.g. - Page 14 Pin Number Signal Name Function 12 VDC Power Supply RS-232 Transmit Data RS-232 Receive Data 3.3 VDC Power Supply Reference Ground 5 VDC Power Supply GPS Receive Data GPS_RX GPS Transmit Data GPS_TX Reference Ground Table 5-5: RS-232 Connector pinout 30.03.2025 | V3.0 Installation / Operation Manual -14-...
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Page 15: Gnss Antenna
CAN_HIGH_1_LB CAN_GND_1_LB Auxiliary white Signal Input black Reference GND 5 V Reference Attention: Install 390 Ohm for SLPC EMU 912iS evo SN 0100 - 0312 EMU 9xiS SN 0001 - 0019 Governor white Stop Signal black Reference GND Motor +... -
Page 16: Available Accessories
Available Accessories Part No. Name Description Prewired shielded harness for Lane A and B connectors Includes power supply wires 21008-713 Wiring Harness Kit EMU Open ends on HIC side to allow for custom integration Length 2 m / 6.5 ft Kit for integration of the start power relay Includes relay and cables for connection to the EMU 10-110... -
Page 17: Operation
Operation This chapter describes operational procedures only for the standard software version of the EMU. Startup The EMU starts up as soon as sufficient supply voltage is provided. The status LED on the front panel confirms startup by illuminating in red for 10 seconds while the device boots up. The subsequent startup screen is shown for 5 seconds and gives details about the current software version while internal testing routines are performed to ensure correct operation of all electronic components. -
Page 18: Main Page
In order to improve the aircraft handling during the engine start process, the EMU provides a switch function which accomplishes automatic start power using an external relay wired in parallel to the SPS. This relay is activated as soon as the EMU is powered up (below 1 sec.) and remains activated until the engine reaches 1500 rpm for the first time. - Page 19 The rectangles labeled "A" and "B" indicate the error status of the ECU lanes by changing alert color from green (operational) to amber (non-fatal error) to red (inoperational). “ACT” marks the active lane controlling the engine, while “SBY” marks the inactive lane. Parameter Color Ranges 912 iS Color Ranges 915 iS / 916iS...
- Page 20 Manifold Air < 60 Green < 80 Green Temperature > 60 > 80 < -20 < -20 Coolant -20 to 120 Green -20 to 120 Green Temperature > 120 > 120 Exhaust Gas < 950 Green < 950 Green Temperature >...
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Page 21: Central Warning Area
Central Warning Area The central warning area in between the rectangles A and B displays informational messages when engine parameters are out of range. Messages displayed in the central warning area will disappear when confirmed by pressing the rotary knob. It is labeled "MCR" (Master Caution Reset) as soon as error messages show up. -
Page 22: Engine Data Information (Info) Page
In Figure 6-9 a high oil temperature is indicated. The sensor value (115 C) is displayed in yellow in the value box. No warning is shown in the Central Warning Area. In Figure 6-10 the warning “CHECK OIL TEMPERATURE” is shown. “CHECK OIL TEMPERATURE” is displayed in red in the Central Warning Area. The sensor value (135 C) is displayed in red in the value box. - Page 23 Figure 6-13: INFO-EGT Figure 6-14: INFO-EGT (Software 912iS RS01.00) (Software 915iS RS11.00) Figure 6-15: INFO-Oil Figure 6-16: INFO-Oil/Cool (Software 912iS RS01.00) (Software 915iS RS11.00) Figure 6-17: INFO-Fuel/Man Figure 6-18: INFO-Fuel/Man (Software 912iS RS01.00) (Software 915iS RS11.00) Installation / Operation Manual 30.03.2025 | V3.0 Engine Management Unit -23-...
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Page 24: System Information (Syst) Page
Figure 6-19: INFO-Electr/Amb Figure 6-20: INFO-Electr/Amb (Software 912iS RS01.00) (Software 915iS RS11.00) Figure 6-21: INFO-Op Hours Figure 6-22: INFO-Op Hours (Software 912iS RS01.00) (Software 915iS RS11.00) System Information (SYST) Page The system information page is accessible from the MAIN page by pressing the push button marked “SYST”. - Page 25 • The “CAN BusMon” subpage shows the output of the internal bus monitoring device. This may be used to troubleshoot installation and wiring problems. Clean installations should read zero errors for reception and transmission. The received and transmitted (Rx/Tx) number of messages on the two lanes is also shown for a timeframe of 100 ms. Pressing the RET button brings up the MAIN page regardless of other selections.
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Page 26: Configuration (Conf) Page
Configuration (CONF) Page The configuration page is accessible from the MAIN page by pressing the push button marked “CONF” and allows the user to view, modify and store the EMU configuration settings on an SD card. The desired configuration item may be selected using the two leftmost push buttons marked “↑↑” and “↓↓”... -
Page 27: Fuel Totalizer
Fuel Totalizer When opening the Configuration Page (CONF), the field “Fuel” is highlighted in light blue. By turning the knob, the total fuel quantity can be added. One click on the turn knob equals one liter. This is also valid in configuration “imperial”, where the total fuel is displayed in gallons instead of liters. By accknowleding the total fuel quantity, the value is stored on the SD card. -
Page 28: Single Lever Power Control
SLPC please refer to chapter 5. Only in special EMU software versions the SLPC function is activated. Feel free to contact RS Flight Systems for different SLPC configurations. Below the central warning area there are two more fields. The first field indicates whether the engine is operating in POWER (rich fuel mixture) or ECO (lean fuel mixture) mode. - Page 29 Two manual SLPC test versions are available at the RS Flight Systems website: RS01.0A for the 912iS and RS11.0A for the 915iS / 916iS. In both versions the requested RPM value can be selected with the rotary knob.
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Page 30: Flight Data Recording
6.11 Flight Data Recording The EMU records all data transmitted by the ECU over both lanes and their respective CANaerospace interfaces and all internal values (e.g. GPS position, speed, time, fuel pressure). This function is only active as long as an SD card is inserted. For each restart of the EMU or every 6 minutes (0.1 recording hours) of runtime, a new file is created and the previous one is closed. - Page 31 Figure 6-37: EMDS Data Screen Figure 6-38: EMDS Fault Matrix Screen Installation / Operation Manual 30.03.2025 | V3.0 Engine Management Unit -31-...
- Page 32 Figure 6-39: EMDS Limits Screen Figure 6-40: EMDS EMU Screen 30.03.2025 | V3.0 Installation / Operation Manual -32- Engine Management Unit...
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Page 33: Software Update
(“INSTALL.LOG”) is created and stored on the memory card and the update files are deleted. The standard software versions are listed in Table 6-4: Standard Software Versions. Feel free to contact RS Flight Systems for customized software versions with individual SLPC algorithms. Installation / Operation Manual 30.03.2025 | V3.0... - Page 34 Software Version Engine Description RS0x.xx 912iS Std. software for Rotax 912iS without SLPC RS0x.xA 912iS SLPC test software for manual propeller adjustment RS0x.xG 912iS SLPC ground test software RS1x.xx 915iS Std. software for Rotax 915iS without SLPC RS1x.xA 915iS SLPC test software for manual propeller adjustment RS1x.xG 915iS SLPC ground test software...
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Page 35: Abbreviations And Terms
Abbreviations and Terms Abbreviation Description Active Aircraft Voltage Auxiliary American Wire Gauge Brightness Computer Aided Design Controller Area Network Check Cylinder Head Temperature CONF Configuration Coolant Temperature Direct (non-alternating) Current Do Not Connect Engine Control Unit ECU Voltage Exhaust Gas Temperature EMDS Engine Management Debriefing Station Engine Management Unit... - Page 36 RS Flight Systems GmbH Oberer Luessbach 29-31 82335 Berg | Germany +49 8178 8681 – 300 contact@rs-flightsystems.com www.rs-flightsystems.com EMU | Version: 3.0 © Copyright 2025 RS Flight Systems GmbH...
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