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Related Manuals for MSEL Master Relay
Summary of Contents for MSEL Master Relay
- Page 1 Master Relay User’s Manual www.msel.com | sales@msel.com | +64 9 525 2991...
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Page 2: Table Of Contents
Electrical Connection .......................... 3 Switch Connection ..........................4 PDM / ECU Connection ........................5 CAN Bus Connection .......................... 5 Master Relay States ....................... 6 LED Indicator States ........................... 6 Battery Connected ..........................6 Battery Isolated ........................... 7 Resetting the Device....................... 8 Load Dump Protection ...................... -
Page 3: Description
Description The Master Relay is a battery isolator that goes much further than just safety in mind. It has been designed with the sole purpose of a motorsport environment. Utilising solid state switching components, the Master Relay has excellent temperature resistance, as well as an aluminium enclosure that is lightweight and robust in even the harshest motorsport environment. - Page 4 Figure 1: Connection Diagram...
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Page 5: Installation
Installation Mounting The MSEL Master Relay has two tags designed for mounting the device to a flat surface. The spacing between the mounting holes is 84mm (see Drawing for details). The location of the Master Relay, as well as the total current load, can have significant effect on the internal temperature of the Master Relay. -
Page 6: Switch Connection
Switch Connection The Master Relay is controlled by two types of switch, the driver kill switch and the external kill switch. Driver Kill Switch The driver kill switch is generally operated from within the vehicle and is the main control for the battery isolation. -
Page 7: Pdm / Ecu Connection
Figure 3: Example multiple external switch configuration PDM / ECU Connection Pin 4 of the Master Relay connector provides a logical output for a PDM / ECU allowing engine shutdown functionality in accordance with FIA rules. The drive of this output can be configured in the combinations shown in Table 2 below. -
Page 8: Master Relay States
Master Relay States LED Indicator States The table below shows the corresponding states for each of the possible colour codes displayed on the status LED. Table 3: LED indicator states Status LED Colour Normal Green (CAN Error) Green Flashing /... -
Page 9: Battery Isolated
Check for any short circuits between the output terminal and the chassis ground. To return to normal operation once the fault is remedied, a reset is required (see Resetting the Device). Master Relay - User’s Manual... -
Page 10: Resetting The Device
120V that can damage sensitive electronic components. The Master Relay has a 5 second timeout where by even if for some reason the battery is still being charged it will be disconnected regardless (this can be extended by specifying a longer shutdown delay, see Shutdown Delay). -
Page 11: Temperature Monitoring
Power Saving Mode After 30 seconds in the Driver Kill mode the Master Relay will enter a power saving mode. In this mode the following functions of the device are turned off to save power. -
Page 12: Can Communications
CAN Communications The Master Relay comes preprogramed with a baud rate of 1 Mbps. The user can configure the device to a baud rate of 500 Kbps or 250 Kbps as detailed in Changing the CAN Baud Rate & Shutdown Delay, or alternatively request these settings at the time of purchase. - Page 13 Power On Reset Configuration Format The configuration channel contains information on the current configuration stored in the Master Relay. Table 8 below shows the composition of this channel from the features programmed as detailed in Device Configuration. Table 8: Configuration channel composition...
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Page 14: Can Shutdown
CAN Shutdown The Master Relay has the ability to be shut down remotely via a CAN message. As default this functionality is disabled. Refer to Setting up CAN Shutdown for information about how to enable and set up this function, or alternatively request this functionality to be programmed when ordering the device. -
Page 15: Device Configuration
0x7FF), and must not conflict with any other CAN devices on the network. Press and hold the external kill switch while sending the above message. The Master Relay will send a response message on the base CAN address. See Table 11 for a list of responses. -
Page 16: Changing The Can Baud Rate & Shutdown Delay
0x02 Press and hold the external kill switch while sending the above message. The Master Relay will send a response message on the base CAN address. See Table 14 for a list of responses. Table 14: Responses for CAN baud rate & shutdown delay configuration... -
Page 17: Changing The Pdm Output Drive Configuration
0x22 0x22 0x22 0x22 0x22 0x22 0x22 0x22 Invalid configuration 0x33 0x33 0x33 0x33 0x33 0x33 0x33 0x33 After a successful response, the Master Relay will need to be reset before the new PDM output drive is implemented. Master Relay - User’s Manual... -
Page 18: Setting Up Can Shutdown
0x7FF), and must not conflict with any other CAN devices on the network. Press and hold the external kill switch while sending the above message The Master Relay will send a response message on the base CAN address. See Table 20 for a list of responses. - Page 19 0x55 0x55 0x55 0x55 0x55 0x55 0x55 0x55 Successfully Disabled 0x66 0x66 0x66 0x66 0x66 0x66 0x66 0x66 After a successful response, the Master Relay will need to be restarted (by removing the power) before the CAN shutdown is enabled. Master Relay - User’s Manual...
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Page 20: Specifications
Specifications Connection Battery Terminal: Copper Plated Stud M6 Output Terminal: Copper Plated Stud M6 Mating Interface Connector: 8STA6-04-06SN Pin 1: Ground Pin 2: Driver Switch Pin 3: External Switch Pin 4: PDM / ECU Output Pin 5: CAN Low Pin 6: CAN High Power Supply Operating Voltage: 8 to 30 V... -
Page 21: Drawing
Drawing All dimensions are in mm Master Relay - User’s Manual... -
Page 22: Revision History
Revision History v1.0 – November 2016 Serial No. up to 61060 Initial Release v1.1 – October 2017 Serial No. 61061 on Added ‘2 Shutdown Cause’ to the CAN messaging. This gives the last two reasons for shutdown, allowing logging the original shutdown event to be seen, even after a ‘reset’. - Page 23 Master Relay - User’s Manual...
- Page 24 Copyright © 2017 – Motorsport Electronics Ltd Master Relay User’s Manual Rev 1.1, October 2017 www.msel.com | sales@msel.com | +64 9 525 2991...
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