MSEL Master Relay, User Manual

Page 1: ...Master Relay User s Manual www msel com sales msel com 64 9 525 2991 ...

Page 2: ... Isolated 7 Resetting the Device 8 Load Dump Protection 8 Shutdown Delay 8 Temperature Monitoring 9 Load Current Monitoring 9 Power Saving Mode 9 CAN Communications 10 Message Format 10 CAN Shutdown 12 Device Configuration 13 Changing the base CAN Identifier 13 Changing the CAN Baud Rate Shutdown Delay 14 Changing the PDM Output Drive Configuration 15 Setting up CAN Shutdown 16 Specifications 18 D...

Page 3: ...elay provides valuable information about the current voltage and internal temperature as well as diagnostic information that makes finding problems a lot easier As well as transmission to a data logger the Master Relay has a multi coloured LED that shows a unique colour combination for each of the 10 different states The driver switch can also be connected with an LED to show when the battery is i...

Page 4: ...2 Figure 1 Connection Diagram ...

Page 5: ...S Power Studs The battery and output terminals are copper plated M6 studs Care should be taken to ensure that cables are insulated from the housing and neighbouring studs It is recommended to use the supplied nut caps with insulated lugs or for maximum protection rubber insulating boots can be used on each stud Interface Connector All low current connections are made through a single 6 way Souriau...

Page 6: ...be turned off when the driver switch is off Figure 2 LED indicator wiring External Kill Switch The external kill switch allows remote triggering of the Master Relay It is often mounted on the exterior of the vehicle and indicated by a red lightning bolt on a blue triangle Multiple external switches can be wired as shown in Multiple Switches If an external switch is not required pin 3 of the Master...

Page 7: ... Bridge 4 GND Vbattery Low Side 6 GND High Side 5 Vbattery In order to change the output drive to one of the other configurations please refer to Changing the PDM Output Drive Configuration or specify your requirements when purchasing The PDM ECU output is short circuit protected and current limited to 200mA To drive larger loads an external relay is recommended CAN Bus Connection To receive statu...

Page 8: ...however the CAN bus has been unresponsive for more than 2 transmission cycles CAN communications have been disabled until the CAN bus is back online this is checked every 5 seconds Over Temperature Warning The device temperature has exceeded the warning temperature 90 C The device will continue to function normally however the temperature is getting close to the device limits This should be remedi...

Page 9: ...is required see Resetting the Device CAN Kill A CAN message has triggered a shutdown The battery is disconnected and the indicator will be solid blue See CAN Shutdown for further details on the CAN kill function To return to normal operation a reset is required see Resetting the Device Over Temperature Kill The device temperature has exceeded the maximum allowed temperature 110 C The battery is di...

Page 10: ...ill being charged it will be disconnected regardless this can be extended by specifying a longer shutdown delay see Shutdown Delay Shutdown Delay The Master Relay can be programmed to delay switching the battery power off to allow for diagnostic data logging The shutdown delay is in addition to the load dump protection delay described in Load Dump Protection Therefore the battery is guaranteed to ...

Page 11: ... of message 1 on the CAN bus see CAN Communications The load current is designed as an indication of the total system draw and is accurate to 10 or 1A whichever is greatest It is not intended to be used for detailed smaller current draw analysis The Master Relay should be used in conjunction with a PDM for accurate measurement of current for individual devices The Master Relay has integrated short...

Page 12: ...ti byte channels are in Big Endian format MSB first Table 5 Base address Default 0x6E4 Byte Channel Units Length Base Signed Value Transmitted 0 Voltage Out V 2 0 01 Unsigned 12 56 1256 1 2 Current Load A 2 0 1 Signed 54 5 545 3 4 Internal Temperature C 2 0 1 Signed 25 2 252 5 6 Warnings 1 1 see 2 7 Status 1 1 see 1 Table 6 Base address 1 Default 0x6E5 Byte Channel Units Length Base Signed Value T...

Page 13: ...0x01 Over Current Warning 3 0x02 Low Voltage Warning 4 0x04 High Voltage Warning 5 0x08 Over Temperature Kill 6 0x10 Driver Switch Kill 7 0x20 External Switch Kill 8 0x40 CAN Trigger Kill 9 0x80 Power On Reset 10 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 fe...

Page 14: ...ne and isolate the battery Table 9 Example CAN shutdown message for CAN Kill address 0x6E6 Received Address Byte 0 1 2 3 4 5 6 7 0x6E6 0xFF 0x00 0xFF 0x00 0xFF 0x00 0xFF 0x00 This feature can also be programmed to work with a MoTeC Accident Data Recorder ADR and trigger after a severe event To enable this feature set the CAN Kill Enable byte to 2 and the CAN Kill address to the address of the stat...

Page 15: ...s to 0x6E4 Where CAN_ID is the desired new CAN address in big endian format MSB first Please note that the CAN address must not exceed a length of 11 bits 0x000 to 0x7FF and must not conflict with any other CAN devices on the network 2 Press and hold the external kill switch while sending the above message 3 The Master Relay will send a response message on the base CAN address See Table 11 for a l...

Page 16: ...n delay to 1 second Where BAUD RATE is from the table below and SHUT DELAY is the delay in tenths of a second that the power is kept on after a shutdown event in hex Table 13 List of baud rate enumerations Baud Rate Value BAUD RATE 1Mbps Default 0x00 500Kbps 0x01 250Kbps 0x02 2 Press and hold the external kill switch while sending the above message 3 The Master Relay will send a response message o...

Page 17: ...e format to set the PDM output drive to active low low side Where OUTPUT DRIVE is selected from the table below Table 16 List of output drive enumerations Active State Drive OUTPUT DRIVE High Half Bridge 0x00 Low Side 0x02 High Side 0x01 Low Half Bridge 0x04 Low Side 0x06 High Side 0x05 2 Press and hold the external kill switch while sending the above message 3 The Master Relay will send a respons...

Page 18: ...correct message format to enable CAN shutdown on address 0x6E6 Where CAN_KILL is composed as in Table 19 below The first 4 bits EN set the CAN shutdown mode where 0 is disabled 1 is enabled and 2 is for a MoTeC ADR The last 12 bits KILL_ID set the receive CAN address in big endian format MSB first Table 19 Example KILL_ID composition Byte 0 1 Mask 0xF0 0x0F 0xF0 0x0F Data EN KILL_ID Example 0x1 0x...

Page 19: ... do match 0x11 0x11 0x11 0x11 0x11 0x11 0x11 0x11 Frame check error 0x22 0x22 0x22 0x22 0x22 0x22 0x22 0x22 Set to ADR Mode 0x55 0x55 0x55 0x55 0x55 0x55 0x55 0x55 Successfully Disabled 0x66 0x66 0x66 0x66 0x66 0x66 0x66 0x66 3 After a successful response the Master Relay will need to be restarted by removing the power before the CAN shutdown is enabled ...

Page 20: ...onditions Temperature 20 to 100 C IP Rating IP63 PDM ECU Output Drive Type Configurable see PDM ECU Connection Output Voltage Vbattery Max Current 200mA maintained Switched Current Maintained Current 200 A Peak Current 1000 A Current Measurement Sensitivity 0 5 A Up to 100A 5 0 A Over 100A Calibration Error 10 or 1 A Range 255 to 600 A Temperature Measurement Sensitivity 0 2 C Calibration Error 3 ...

Page 21: ...Master Relay User s Manual 19 Drawing All dimensions are in mm ...

Page 22: ...Serial No up to 61060 Initial Release v1 1 October 2017 Serial No 61061 on Added 2nd 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 21 ...

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 ...