Reference: Refer to the Systems Operation , M0076092 , "Operator Console" section for information on the Off-Board Components.
Roof-Mounted Electronics Enclosure (RMEE)
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| Illustration 1 | g06266419 |
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Front view of the roof-mounted electronics enclosure (RMEE) (3) Roof-mounted electronics enclosure (RMEE) (4) Autonomous stop (A-Stop) antenna (optional) (5) Operator console receiver antenna | |
The Roof-Mounted Electronics Enclosure (RMEE) (3) houses or holds the antennas, Remote Control ECM (RCM), ECM for Indicator lights and On-Board Transceiver.
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| Illustration 2 | g06190877 |
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Antenna on the roof-mounted electronics enclosure (RMEE) (5) Antenna | |
Antenna (5) is connected to the Transceiver.
Depending on the system Transceiver and the console communication frequency protocol used, the system will utilize one of the following Antenna options:
- 900 MHz antenna used with Transceivers and console sharing a 900MHZ frequency communication protocol.
- 2.4 GHz antenna used with Transceivers and console sharing a 2.4GHZ frequency communication protocol.
Note: To ensure that the correct Antenna is installed and to help distinguished the differences between the systems, the 900 MHZ antenna is about
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| Illustration 3 | g06231969 |
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On-Board Transceiver (6) Power on LED (7) RF interruption LED (8) Si1 LED (9) Si2 LED (10) Feedback LED (11) CAN LED | |
The On-Board transceiver is used to communicate between the operator console and the remote control electronics that are on the machine. Both transceiver and console must share frequency communication protocols and will be offered with either with a 900 MHz or 2.4 GHz. Each transceiver will be shipped from factory with a unique Radio Frequency Identification (RFID) chip to pair to the console. The transceiver is located inside the Roof Mounted Electronics Enclosure (RMEE). The Antenna is connected to the receiver and mounted on the top of the RMEE. Rated transmission power of 100mW for 2.4 GHZ and 16mW for 900MHz
Power On LED (6) - Illuminates yellow when receiver is powered.
RF Interruption LED (7) - Illuminates red when radio connection is interrupted.
Si1 LED (8) - Illuminates solid green on radio connection. Radio connection and valid e-stop condition. Commands available under Si1 are nonsafety relevant. (Example: Lights, Horn, and so on.)
Si2 LED (9) - Illuminates blink green on driven command. Active Si1 status plus at least one telegram with without SI2-condition and inactive SI2 commands have been received (enforced zero position) after the SI1 status has been reached and a valid telegram with Si2 and Si2 associated command. Commands involve safety-related machine functions. Only lights when Si2 is active. (Example: Engine Start, Track Drive, and so on.) Si2 should light only when an Si2 command is active.
Feedback LED (10) - Will always blink. LED blinks with each telegram from the receiver to the console. (Feedback of machine data on console screen.
CAN LED (11) - Flash green with CAN communication. Since the system is in constant communication, this LED will constantly be blinking green.
| On-Board Transceiver LED Diagnostic Table | ||
|---|---|---|
| Receiver LEDs | Receiver Data | |
| Meaning | Color | Information |
| ON | Yellow | Illuminates when the receiver is connected to the operating voltage. |
| RF | Red | Illuminates when the radio connection is interrupted. |
| Si1 | Green | Illuminates when the E-Stop relays are closed. |
| Si2 | Green | Illuminates when a drive command is output. |
| Feedback | Yellow | Illuminates when a feedback telegram is transmitted. |
| CAN Traffic | Green | Illuminates when there is data communication via the CAN interface. |
| On-Board Transceiver Specifications | ||
|---|---|---|
| Frequency Range | 2.402 - 2.480 GHz | 905.2 - 908.375 MHz |
| Frequency Management | Frequency Hopping Spread Spectrum | Automatic Frequency Selection (AFS) |
| Radio Power | 100 mW | 16 mW |
| Max. Operating range | |
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| IP Rating | 68 | |
| Operating temperature | |
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| Storage temperature | |
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| Input Voltage | 9V to 32V | |
Using 900MHz, Automatic Frequency Selection (AFS) will check if the present radio channel is free. If the radio channel is occupied, the system automatically finds and saves a free radio channel. If the radio channel currently in use is occupied by another radio control system, you must switch the transmitter off and on again to allow AFS to switch to a free radio channel. If AFS is to perform optimally, all the other radio systems in the immediate working environment (such as the factory hall or building site) should be switched on before starting to use the radio system for the first time. Switching all the other radio systems ON before using the system allows AFS to detect automatically which radio channels are already being used in the working area and to choose a suitable free channel for use. In addition, when switching on the radio system for the first time, the user should make sure that the distance from the radio receiver and from the machine is a realistic reflection of the working situation.
2.4 GHz technology works with automatic frequency coordination and thus ensures interruption -free working in areas with many radio users. Manual frequency coordination is not necessary. With the worldwide frequency band, 2.4 GHz technology can be used all over the world.
Indicator Control Electronic Control Module
Mounted in the RMEE.
Blue remote status indicators, mounted on the ROPS, are turned on solid when the System Master (RCM) powers up.
Note: Now the System Master is powered. The Machine ECMs will be powered via the Operator Console.
The System Relay and Fuse Box is mounted in the RMEE.
When the Manual/Remote Mode switch on the Ground Level Service Center (GLSC) is in the MANUAL position, the Command for dozing system and the Remote Control ECM (RCM) are powered down. All relays are in an inactive (normally closed) state. In this state the machine acts as if the Command for dozing system is not installed on the machine.
While the relays are powered down, some circuits from machine operation are run through the normally closed position of the relays. Those relays are bypassing circuits:
- Parking Brake Switch
- R5 Parking Brake 1 (Parking Brake Relay) for the Cabin Parking Brake Switch
- Key Switch
- R6 Key Disable (Cab Key Switch Disable Relay) for the Cabin Machine Key Switch
- Implement Lockout Switch
- R9 Implement Lockout (Implement Lockout Relay) For the Cabin Implement Lockout Switch
Note: The following information describes what occurs onboard the machine when the Manual/Remote Mode switch on the GLSC is placed in the Remote position.
The System Master (RCM) energizes the following relays contact 85 of the relays to ground from contact 86 via the PWM DR RET on the RCM. This action occurs when the RCM is powered by the Remote Control Mode Switch.
When R131 is Energized From the Remote Control Mode Switch to the J1-1 of the RCM is Energized.
When The RCM is powered, the follow relays are energized:
- R3 Auxiliary Power (Unmanned System Auxiliary Power Relay)
- R5 Parking Brake 1 (Parking Brake Relay)
- R6 Key Disable (Cab Key Switch Disable Relay)
- R7 Mode Select (Remote Control Mode Enable Relay)
- R9 Implement Lockout (Implement Lockout Relay)
This action will bypass, on the machine the following:
- Key Switch
- Parking Brake Switch
- Implement Lockout Switch
The User can now Enable the following functions:
The Following Relays are activated by the Operator:
- R1 Engine Start (Keyswitch Start Relay)
- R2 Machine Power (Key Switch On Relay )
- R4 Fire Suppression (Fire Suppression Relay
- R8 Machine Horn (Operator Horn Relay)
- R10 Parking Brake 2 (Unmanned System Parking Brake Switch Disabled Relay)
When the RCM is not powered on, the following relays are energized:
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| Illustration 4 | g06275295 |
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"Mode Select" relay mini schematic | |
The Mode Select Relay is a means of powering a harness code wire to the RCM ECM to determine the bootup mode (RC or Manual). When the RCM is powered, the RCM sends current to the coil side of the relay. On the RCM J1-32 is used to determine the startup mode of the RCM. The contact J2-36 on both implement and power train are energized from Remote Control Mode Switch to indicate RC mode. Contact J1-33 on the RCM is energized as a means of diagnostic capability to determine relay position. Relay deenergized state supplies power to the Green indicator (Manual Mode)
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| Illustration 5 | g06275296 |
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"Key Disable" relay mini schematic | |
The Key Cab Disable relay is a means to override and prevent the Cab Keyswitch from becoming active. The Key Disable relay becomes Energized (from the RCM) when the RCM is powered to prevent the keyswitch inside the cab from becoming functional. Now, The keyswitch supply power is moved away from the Cab keyswitch and redirected to the Engine Start Relay and machine Power Relay. Installation of the RC Kit doe extend the Keyswitch Circuit to the relay on the cab. This means that 2 wires are labeled the same in 1 RC harness. Swapping of the wires at pin locations (105) could prevent machine activity is unlikely. Relay deenergized state supplies power to the Cab Keyswitch as normal manned operation.
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| Illustration 6 | g06275318 |
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"Parking Brake 1 and 2" relay mini schematic | |
The Parking Brake 1 Relay is a means to prevent the override and disable the Cab Parking Brake Switch. Parking Brake Relay 2 is a means to provide a Parking Brake Switch for the Remote Control System. Both Relays allow the Power train ECM to control the Braking Solenoid. When the RCM is powered, Parking brake relay 1 is energized (from the RCM) and power is redirected away from the Cab Parking Brake Switch to Parking Brake Relay 2. Now the Cab parking brake switch is left inoperable. The Parking Brake Relay 2 then becomes the functional switch of the parking brake. When the Parking Brake Switch on the Console is Turned ON, the Park Brake 2 Relay is energized. The Parking Brake Relay 2 is deenergized when the Parking Brake Switch on the Console is OFF. When the Parking Brake Relay 2 is deenergized, the circuit will add current from the Power train ECM (J1-58) through the Parking Brake Relay 1 and 2 to the Brake Proportional Solenoid.
Installation of the RC Kit does extend the Brake Circuit to the relays on the cab. This means that 2 wires are labeled the same in 1 RC harness. It is unlikely but the swapping of the wires at pin locations (A789) could prevent machine activity. Parking Brake Relay 1 deenergized state supplies power to the Parking Brake switch as normal manned operation.
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| Illustration 7 | g06275319 |
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"Implement Lockout" relay mini schematic | |
The Implement Lockout Relay is a means to override the Cab Implement Lockout Switch and Still allow the Implement ECM to control the Implement Lockout Solenoid. The Implement Lockout relay becomes Energized (from the RCM) when the RCM is powered to prevent Implement Lockout inside the cab from becoming functional. Now, circuit from the Implement ECM is diverted from the switch directly to the solenoid.
Installation of the RC Kit doe extend the Implement Lockout Circuit to the relays on the cab. This means that 2 wires are labeled the same in 1 RC harness. It is unlikely but the swapping of the wires at pin locations (M927) could prevent machine activity. Implement Lockout Relay deenergized state supplies power back to the Implement Lockout Switch as normal operation.
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| Illustration 8 | g06275323 |
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"Auxiliary Power" relay mini schematic | |
The Auxiliary Power Relay is a means to provide power to the Ethernet Devices and Mode Select Indicators. When the RCM is Powered, the RCM energizes the coil of the Auxiliary Power Relay to send Auxiliary Power to the Ethernet Router, Switch, WiFi Radio, Cameras, and Mode Select Indicators. When the RCM is not powered, The Auxiliary Power Relay may also be energized from the Cab Keyswitch through a diode to allow the Ethernet devices to be powered while the machine is in Manual Operation.
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| Illustration 9 | g06275324 |
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"Machine Horn" relay mini schematic | |
The Machine Horn Relay is a means to allow the operator console to activate the machine horn. Activating the Horn Button on the Console will enable the RCM to energize the coil on the Machine Horn Relay. Energizing the coil will contact the switch power from the horn fuse to the horn, to a similar circuit as the cab. Installation of the Remote Control Kit adds a parallel circuit to the horn (unlike the Parking Brake, Implement Lockout, and Keyswitch).
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| Illustration 10 | g06275326 |
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"Machine Power" relay mini schematic | |
The Machine Power Relay is a means allow the Operator Console to Provide Keyswitch Power to Machine ECMs. The Machine Power Relay coil is energized from the RCM when the Operator Toggles the Keyswitch on the Operator Console. The Relay power is sourced from the Cab Key Disable Relay and redirected toward the Machine ECMs as Keyswitch Input. J1-24 on the RCM is used as a Diagnostic wire to determine if the Relay has switched.
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| Illustration 11 | g06031556 |
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"Fire Suppression" relay mini schematic | |
The Fire Suppression Relay is a means to allow the operator console to Electronically Activate the Customer installed Fire Suppression Systems. When the RC is active, The Fire Suppression Relay becomes Energized from the RCM when the Operator Toggles the Fire Suppression Switch on the Operator Console. Fire Suppression can be enabled from the corresponding console, any time the RC is active. This Relay has a Cat ET installation status that must be configured to allow operation. The Relay allows for the customer to either provide a normally open or normally closed operation based on Fire Suppression Requirements.
When the Fire Suppression Switch is activated to the ON position, the Operator Console sends the command to the Remote Control ECM via the Remote Control transceiver. The Remote Control ECM then energizes the coil of the fire suppression relay. The relay is in NC state when the relay is not activated. Once the coil is energized, the state of the relay changes to NO. This connector is located inside the cab on right side of the seat in the RC platform harness.
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| Illustration 12 | g06275331 |
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"Engine Start" relay mini schematic | |
The Engine Start Relay is a means to allow the Operator Console to Start the Engine. When the RC is active, the Engine Start Relay will become energized from the RCM when toggling the Engine Start Switch on the operator console. Cabin Keyswitch power will then be switched to the Engine Start Circuit on the Engine ECM.
Ground Level Control Center (GLSC)
The Ground Level Service Center (GLSC) Is mounted in the left fender of the machine and contains
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| Illustration 13 | g06266436 |
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Ground level service center (GLSC) (12) Permanent auxiliary start receptacle (13) Service meter (14) Manual/remote mode switch (15) Battery disconnect switch (16) Emergency engine shutdown switch (17) Access lights switch | |
The Ground Level Service Center (GLSC) contains:
- Permanent Auxiliary Start Receptacle (8)
- Service Meter (9)
- Manual/Remote Mode Switch (10)
- Battery Disconnect Switch (11)
- Emergency Engine Shutdown Switch (12)
- Access Lights Switch (13)
The GLSC is on the left side of the machine. The GLSC is mounted in the left side fender.
Note: When the Manual/Remote Mode switch is in the remote position, the only machine cab controls that will function are the service brakes, the lights, and the horn. All other cab controls will not function. When the Manual/Remote Mode switch is in the manual position, the machine cab control functions are restored for normal operation.
Note: The Manual/Remote Mode switch (10) provides a Lockout Tab, which provides a way to lock out and tag out the remote control mode. The tab can be used as lock out for service or while the machine is being used in manual mode.
When the Manual/Remote Mode switch on the Ground Level Control Center (GLSC) is in the MANUAL position, the Command for dozing system and the Remote Control ECM (RCM) are powered down. All relays are in an inactive (normally closed) state. In this state the machine acts as if the Command for dozing system is not installed on the machine.
While the relays are powered down, some circuits from machine operation are run through the normally closed position of the relays. Those relays are bypassing circuits:
- Key Switch
- Parking Brake Switch
- Implement Lockout Switch
- R6 Key Disable (Cab Key Switch Disable Relay) for the Cabin Machine Key Switch
- R5 Parking Brake 1 (Parking Brake Relay) for the Cabin Parking Brake Switch
- R9 Implement Lockout (Implement Lockout Relay) For the Cabin Implement Lockout Switch