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student_documentation:relay [2023/12/04 14:55] – Beni Ammannstudent_documentation:relay [2024/07/03 02:22] (current) – Beni Ammann
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 {{:student_documentation:open_bb_with_relais.png?800|}} {{:student_documentation:open_bb_with_relais.png?800|}}
  
-The relay contacts (SPDT) are intended to be used to disable the vehicle propulsion system when activitated. Connect these contacts to your motor controller or engine controller. Directly switching the ignition coil primary winding is not permitted because it generates strong EMI emissions which may lead to On-Board Computer malfunction. Wiring your relay in series with the E-Stop is not permitted as well. +The relay contacts (SPDT) are intended to be used to disable the vehicle propulsion system when activitated. 
 +  
 +Connect these contacts to your motor controller or engine controller.  
 +You can use ether one of the relais. 
 + 
 +Directly switching the ignition coil primary winding is not permitted because it generates strong EMI emissions which may lead to On-Board Computer malfunction. Wiring your relay in series with the E-Stop is not permitted as well. 
  
 There are several options for connecting the shutdown relay. Teams should choose ONLY one option to implement. Other methods will be accepted as long as the drive system is disabled when the relay is activated There are several options for connecting the shutdown relay. Teams should choose ONLY one option to implement. Other methods will be accepted as long as the drive system is disabled when the relay is activated
  
 Before the event, teams should identify and test with a switch the circuit that will be wired through the shutdown relay. Before the event, teams should identify and test with a switch the circuit that will be wired through the shutdown relay.
 +
 +The maxumum current flowing through the Relais must not exceede 2 Ampere
 +
  
 ===== ICE ===== ===== ICE =====
  
-  * The shutdown relay must kill the engine when the relay is activated. +The shutdown relay must kill the engine when the relay is activated.
-  * Connections can made be from N to NC (Normally Closed, will open when relay is activated) or from N to NO (Normally Open, will close when relay is activated) depending on system configuration +
-  * Maximum current = 1 amps+
  
  
-* Option 1 – directly enables engine ECU (NC)+Connections can made be from N to NC (Normally Closed, will open when relay is activated) or from N to NO (Normally Open, will close when relay is activated) depending on system configuration 
 + 
 + 
 +**Maximum current = 2 amps** \\ 
 +**Maximum voltage = 24 volt** \\ 
 + 
 + 
 + 
 +  * Option 1 – directly enables engine ECU (NC)
    
-* Option 2 – directly disables engine ECU (NO) +  * Option 2 – directly disables engine ECU (NO) 
  
-* Option 3 – Connected in series (NC contacts) with deadman switch if electronic+  * Option 3 – Connected in series (NC contacts) with deadman switch if electronic
  
 Examples for ICE Examples for ICE
 {{ :student_documentation:Shutdown_Relay_ICE.JPG?nolink&400 |}} {{ :student_documentation:Shutdown_Relay_ICE.JPG?nolink&400 |}}
  
-THE SHUTDOWN RELAY MUST NOT BE CONNECTED TO THE IGNITION COIL OR E-STOP. +THE SHUTDOWN RELAY MUST NOT BE CONNECTED TO THE IGNITION COIL. 
  
  
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 The shutdown relay must disable vehicle propulsion when the relay is activated. The shutdown relay must disable vehicle propulsion when the relay is activated.
 +
 +
 Connections can be made from N to NC (Normally Closed, will open when relay is activated) or from N to NO (Normally Open, will close when relay is activated) depending on system configuration. Connections can be made from N to NC (Normally Closed, will open when relay is activated) or from N to NO (Normally Open, will close when relay is activated) depending on system configuration.
-Maximum relay current = 1 amps. + 
-   + 
-  * Option 1 disables motor control when activated +**Maximum current = 2 amps** \\ 
-     NC contacts on motor controller on/off +**Maximum voltage = 24 volt** \\ 
-  * Option 2 grounds motor controller when activated + 
-     NO contacts for motor controllers with this feature +  * Option 1 - disables motor control when activated 
-  * Option 3 disables throttle/speed input when activated +    * NC contacts on motor controller on/off 
-      NC contacts to remove motor controller throttle input. Note, you may need to install and pull up/pull down resistor for correct motor controller operation when relay is activated.+  * Option 2 - grounds motor controller when activated 
 +    * NO contacts for motor controllers with this feature 
 +  * Option 3 - disables throttle/speed input when activated 
 +    * NC contacts to remove motor controller throttle input.  
 + 
 +Note, you may need to install and pull up/pull down resistor for correct motor controller operation when relay is activated.
  
 Examples for BE and H2 Examples for BE and H2
Log In (for D&T Team and Volunteers ONLY) student_documentation/relay.1701701745.txt.gz · Last modified: 2023/12/04 14:55 by Beni Ammann

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