Syvecs X20-E8XX User manual

Syvecs LTD
V1.0
X20 - E8XX
This document is intended for use by a technical audience and describes a number of procedures that are potentially
hazardous. Installations should be carried out by competent persons only.
Syvecs and the author accept no liability for any damage caused by the incorrect installation or configuration of the
equipment.
Please Note that due to frequent firmware changes certain windows might not be the same as the manual illustrates.
If so please contact the Syvecs Tech Team for Assistance.
[email protected]

Table of Contents
Introduction ......................................................................................................................... 2
Specification ...................................................................................................................... 2
General Connections ............................................................................................................ 5
Connecting Power/Ground ................................................................................................ 5
Example Schematic ............................................................................................................ 5
Pin Schedule ...................................................................................................................... 5
Output Connections ............................................................................................................. 6
Low Side Outputs ............................................................................................................... 6
The low side outputs are only able to be driven to ground but offer full pulse width
modulation control. The outputs can be used to drive up to 12A Peak / 6A Continuous
and can only pull to ground. .............................................................................................. 6
Pin Schedule ...................................................................................................................... 6
Sensor Supply and Grounds .................................................................................................. 6
Sensor/ Analogue Grounds (AN Grounds) ......................................................................... 6
Pin Schedule ...................................................................................................................... 6
5V Regulated Supply .......................................................................................................... 6
Pin Schedule ...................................................................................................................... 6
Input Connections ................................................................................................................ 7
Digital Inputs ...................................................................................................................... 7
Voltage Inputs - AV Inputs ................................................................................................. 7
Sensor Schematics - Examples ............................................................................................... 8
Manifold Pressure Sensor (MAP) ...................................................................................... 8
Example Schematic ............................................................................................................ 8
Pin Schedule ...................................................................................................................... 8
Coolant Temperature Sensor (CTS) ................................................................................... 8
Example Schematic ............................................................................................................ 8
Pin Schedule ...................................................................................................................... 8
Inlet Air Temperature Sensor (IAT) .................................................................................... 9
Example Schematic ............................................................................................................ 9
Pin Schedule ...................................................................................................................... 9
Calibration Switches .......................................................................................................... 9
Example Schematic ............................................................................................................ 9
Pin Schedule ...................................................................................................................... 9
Wideband Lambda Sensors ................................................................................................ 10
NTK L2H2 ......................................................................................................................... 11
NTK wiring ....................................................................................................................... 12
Lambda2 .......................................................................................................................... 12
CAN Bus .............................................................................................................................. 13
Example Schematics ........................................................................................................ 13
MoTeC Setup ...................................................................................................................... 14
PC Connection - SCAL .......................................................................................................... 15
Output Testing .................................................................................................................... 17

Introduction
The Syvecs X20 E8XX expander is a very powerful device for controlling additional I/O
(Inputs and Outputs) in an automotive electrical installation. With the use of CAN
controllers, the X20 communicates with MoTeC devices to behave as a slave for it, offering
the I/O compliment to its master device.
The X20 is able to communicate with MoTeC engine control units via the E8XX CAN protocol
and the LTC CAN Protocol. Note: the X20 does not have K-Type thermocouple inputs so
these are not supported in the protocol.
The following is supported with X20 MoTeC communication
- Digital inputs 1-4
- Analog Input Voltages 1-16
- Output 1-8 Control
- LTC Lambda 1 and Lambda 2
- Output driver faults
- Internal temperature
- Internal voltages (-5v, 8vAux, 5vAux, Vbat, 4.5v)
Specification
Outputs
8 PWM Outputs
Inputs
16 ADC Voltage Inputs
4 Digital Inputs
2 NTK Lambda Inputs
Interfaces
USB For Updates and Configuration
2 x CAN 2.0B interface for communication with other controllers or logging systems
Power Supply
6 to 26V input voltage range
Ignition Switch Logic with high current supply
Physical
Waterproof Sealed
Automotive Spec -40c to 125c
2 x 34 way Superseal 1.0 connectors
150mm x 150mm

A DESCRIPTION CONNECTOR A
PART NUMBER 4-1437290-0
NOTES: 34 Way - Key1
Pinout
MoTeC
Assignment Description
N/C N/C N/C
A2
PWR ON
Ignition 12V Signal
-
Used only for Board Wake up
A3 DIG1 Digital Input - Frequency
A4 DIG3 Digital Input - Frequency
A5 AV1 0-5V Input Only – Pull Up Optional
A6 AV3 0-5V Input Only
A7 AV5 0-5V Input Only
A8 Vbat 12V Supply - High Current (Required)
A9 Vbat 12V Supply - High Current (Required)
N/C N/C N/C
N/C N/C N/C
A12 DIG2 Digital Input - Frequency
A13
DIG4
Digital Input
-
Frequency
A14 AV2 0-5V Input Only – Pull Up Optional
A15 AV4 0-5V Input Only
A16 AV6 0-5V Input Only
A17 5VOUT 5v Output for Sensors
N/C N/C N/C
A19 CAN0L Can 0 Low
A20
CAN0H
Can 0 High
A21 NTK1 ION NTK1 Ion Pump (White Wire)
A22 NTK2 ION NTK2 Ion Pump (White Wire)
N/C N/C N/C
N/C
N/C
N/C
A25 0V/LamGnd Sensor Ground Connection / NTK Ground (Black Wire)
N/C N/C N/C
A27 PWM1 Low Side Output
A28 PWM2 Low Side Output
A29 PWM3 Low Side Output
A30 PWM4 Low Side Output
A31
PWM5
Low Side Output
A32 PWM6 Low Side Output
A33 GROUND Ground Connection - High Current (Required)
A34 GROUND Ground Connection - High Current (Required)

B DESCRIPTION CONNECTOR B
PART NUMBER 4-1437290-1
NOTES: 34 Way - Key2
B1 Vbat 12V Supply - High Current (Required)
B2 Vbat 12V Supply - High Current (Required)
B3
AV13
0
-
5V Input
Only
B4 AV15 0-5V Input Only
B5 AV7 0-5V Input Only – Pull Up Optional
B6 AV9 0-5V Input Only – Pull Up Optional
B7
AV11
0
-
5V Input Only
–
Pull Up Optional
N/C N/C N/C
N/C N/C N/C
B10 5v Output for Sensors
B11 AV14 0-5V Input Only
B12 AV16 0-5V Input Only
B13 AV8 0-5V Input Only – Pull Up Optional
B14
AV10
0
-
5V Input Only
–
Pull Up Optional
B15 AV12 0-5V Input Only – Pull Up Optional
N/C N/C N/C
N/C N/C N/C
B18 0V/LamGnd Sensor Ground Connection / NTK Ground (Black Wire)
B19 NTK NRNST 1 NTK1 NRST Voltage (Grey Wire) / Can 3 Low
B20 NTK NRNST 2 NTK2 NRST Voltage (Grey Wire) / Can 3 High
B21 CAN1L Can 1 Low
B22 CAN1H Can 1 High
N/C N/C N/C
N/C N/C N/C
N/C
N/C
N/C
B26 GROUND Ground Connection - High Current (Required)
B27 GROUND Ground Connection - High Current (Required)
B28
PWM7
Low Side Output
B29 PWM8 Low Side Output
B30 LAM1HTR NTK Lambda Heater 1
B31 LAM2HTR NTK Lambda Heater 2
N/C N/C N/C
N/C N/C N/C
N/C N/C N/C

General Connections
Connecting Power/Ground
The X20 has 5 power connection points, four of these are high current and can be connected to a
fused battery power or switched power source. One of them is Logic Switch / Ignition Switch power
and used to switch the power gate so that current is able to flow from the 4x High current 12v pins
into the Device.
If driving motors or solenoids which pull a lot of current then ensure the correct amount of pins are
connected. Each pin on the X20 is able to sink around 14 amps of current, so if driving multiple
solenoids that pulls 20+ amps total, ensure at least two high current 12v pins and two power ground
pins are used.
Internally A8/A9 are linked, as well as B1/B2. These can either be used to provide extra current on a
supply, or as a way of providing switched power to additional loads through the loom.
Pin A2 (Ignition Sw) is for a 12v low current ignition switch supply to enable the power gate on the
X20 internally, this is required on all installations.
Power Grounds are joined internally and the X20 must have at least A33 and B26 connected. If driving
lots of Low Side outputs then connect A34 and B27 also to handle the current loading.
NOTE! Power Grounds are designed to conduct High Current loads – Do not mix Power Grounds with Analogue
(AN) Grounds.
Example Schematic
Figure
0
-
1
-
Power Feeds and a Common grounding point.
Pin Schedule
Pin Number Function Notes
A8 VBAT1 Use a fused 12v Switched feed. MUST CONNECT
A9 VBAT1 Use a fused 12v Switched feed.
B1 VBAT2 Use a fused 12v Switched feed. MUST CONNECT
B2 VBAT2 Use a fused 12v Switched feed.
A33 Power Ground Shared Power Ground
A34 Power Ground Shared Power Ground
B26 Power Ground Shared Power Ground
B27 Power Ground Shared Power Ground
A2 Power On 12v Ignition Switch – Logic Power MUST CONNECT

Output Connections
Low Side Outputs
The low side outputs are only able to be driven to ground but offer full pulse width modulation
control. The outputs can be used to drive up to 12A Peak / 6A Continuous and can only pull to ground.
Pin Schedule
Pin Number Function MoTeC Assignment
A27 PWM1 PWM1
A28
PWM2
PWM2
A29 PWM3 PWM3
A30 PWM4 PWM4
A31 PWM5 PWM5
A32 PWM6 PWM6
B28 PWM7 PWM7
B29 PWM8 PWM8
Sensor Supply and Grounds
Sensor/ Analogue Grounds (AN Grounds)
Sensors and miscellaneous analogue inputs have their own Ground pins; these grounds must be kept
separate from the Power grounds shown in the first section. As there are 2 sensor ground pins you
may have to connect multiple grounds to some of the pins if you have more than two sensors.
Pin Schedule
Pin Number Function Notes
A25 ANGND1
B18 ANGND2
5V Regulated Supply
Sensors and miscellaneous analogue inputs have their own power pins which need a stable power
supply, the 5v Regulated outputs are protected and provide a stable/clean 5v which can handle
500ma Maximum.
Pin Schedule
Pin Number Function Notes
A17 5VOUT1
B10 5VOUT2

Input Connections
Digital Inputs
These Inputs are able to swing above and below the reference ground meaning they can see Positive
Voltage as well as Negative. Fully adjustable trigger thresholds for the frequency decoding is
supported on these pins as well as optional 3k pull-ups to 5v. These are configurable via a USB
connection to X20 (see page 14).
Example of sensors normally used on these Inputs are:
- Reluctor Crank and Cam Sensors / ABS Sensors for wheel speed
- Hall Sensors
Pin Number Input
A3 DIG1 Optional 3k Pull-up
A12 DIG2 Optional 3k Pull-up
A4 DIG3 Optional 3k Pull-up
A13 DIG4 Optional 3k Pull-up
Voltage Inputs - AV Inputs
These Inputs are able to sense a Voltage level but not offer Frequency detection, some of these
inputs support a 3k Pull-up option which is turned on via a USB connection, explained on page 14.
Example of sensors which normally use on these Inputs are:
- Manifold Pressure sensors
- Throttle Positions
- Oil Pressures
- Thermistor (requires 3k pull to be enabled)
Voltage Inputs are not just limited to the above they can also be used for any sensor which outputs a
0-5volt signal.
Pin Number Input
A5 AV1 Optional 3k Pull-up
A14 AV2 Optional 3k Pull-up
A6 AV3
A15 AV4
A7
AV5
A16 AV6
B5 AV7 Optional 3k Pull-up
B13 AV8 Optional 3k Pull-up
B6 AV9 Optional 3k Pull-up
B14 AV10 Optional 3k Pull-up
B7 AV11 Optional 3k Pull-up
B15 AV12 Optional 3k Pull-up
B3 AV13
B11 AV14
B4 AV15
B12 AV16

Sensor Schematics - Examples
Manifold Pressure Sensor (MAP)
Example Schematic
Pin Schedule
Pin Number Function Notes
A25 ANGND1 May be shared with multiple sensors
A17 5VOUT1 Regulated sensor power supply
B12 AV16 Input Any Input can be used
Coolant Temperature Sensor (CTS)
Example Schematic
Pin Schedule
Pin Number
Function
Notes
A25 ANGND1 May be shared with multiple sensors
A5 AV1 Needs Pull up

Inlet Air Temperature Sensor (IAT)
Example Schematic
Pin Schedule
Pin Number Function Notes
A25 ANGND1 May be shared with multiple sensors
B5 AV7 Needs external pull up
Calibration Switches
Example Schematic
Pin Schedule
Pin Number Function Notes
A25 ANGND1 May be shared with multiple sensors
B14 AV10 Needs external pull up

Wideband Lambda Sensors
The Syvecs X20 has the ability to drive two NTK L1H1/L2H2 Wideband Lambda sensors
without the use of external hardware. Please see wiring and fitting information below
Example Schematic

11
NTK L2H2
The Syvecs X20 supports 2 x NTK lambda sensors which output the LTC CAN data to the Motec
M1 range.
Users are able to adjust the Linearisation, Heater frequency and Heater voltage via a USB
connection to the X20 hardware using our Scal software (See page 14). The Default values are
setup to suit a L2H2 NTK.
The NTK L2h2 lambda sensors like to have around 10.7v across the heater circuit and this is
setup as default to be targeted. The LamHTR* outputs will then adjust the duty automatically
through the heater based on the voltage supply level to the X20 on HVbat1 and HVbat2.
HVbat1 is used for calculating Lam1Htr voltage and HVbat2 is used for calculating Lam2Htr
voltage. If using dual NTK, make sure that VBAT2 (Pin B1 or B2) is powered as this is needed for
the Lam2Htr calculations.

12
NTK wiring
Lamda1
Lambda2
Example Schematic
Lambda
Pin
Number
Colour Name X20 Pin
1 Yellow Heater VBAT1 or 12V Switched
2 Blue Heater Drive B30 - LamHTR1
6 Grey Nernst Cell Voltage B19
7 White Ion Pump Current A21
8 Black Signal Ground A25 or B18
Lambda
Pin
Number
Colour Name X20 Pin
1 Yellow Heater VBAT2 or 12V Switched
2 Blue Heater Drive B31 - LamHTR2
6 Grey Nernst Cell Voltage B20
7 White Ion Pump Current A22
8 Black Signal Ground A25 or B18

13
CAN Bus
Common Area Network Bus (CAN Bus) is a widely used data interface common used in many cars and
aftermarket accessories (such as Data loggers and Dashes). Data is sent using the High and Low wires,
which are maintained as a twisted pair.
The X20 as default has 2 x CAN bus interfaces:
CAN0 is used for expander communications with the MoTeC Ecu – 1MB
CAN1 is available for generic use but can be used also for bridging the custom can data from CAN0 to
external dashboards.
Example Schematics
Pin Number Function Notes
A19 CAN0 LOW Ensure wires are twisted pair.
A20 CAN0 HIGH Ensure wires are twisted pair.
B21 CAN1 LOW Ensure wires are twisted pair.
B22 CAN1 HIGH Ensure wires are twisted pair.

14
MoTeC Setup
The X20 can be set to communicate with MoTeC engine control units via the E8XX CAN protocol
and the LTC CAN Protocol.
Calibrators need to set the Exhaust Lambda Cylinder 1&2 LTC Index to Frame 0x460
Calibrators need to set the E8XX Can ID Base to 0xF0

15
PC Connection - SCAL
The X20 has a calibration stored onboard to maintain settings of the X20 hardware. In order for
the X20 to work it must have a valid calibration present in the device and when shipping from
the factory a default cal is loaded to ensure it works out of the box. Calibrators who wish to
enable an Input to work in SENT decoding or setup custom CAN transmit will need to connect
live to the X20.
A USB-C port is found at the back of the X20 which is IP67 sealed. Use a USB-C to USB-A
male/male cable to connect the X20 to the computer. The S-Suite software can be downloaded
from below.
https://www.syvecs.com/software/
After running the SSuite installer, open the program called SCal and click Device - Connect
A X20 device will be found as shown below, press Ok to proceed

16
The connected green icon should now be present in the top right and all the voltages/temps
from onboard the X20 are listed on the right hand side.
Calibrators now have the ability to change the Input setup for each AN Input, setup custom
DataStream CAN options or use the output testing (see page 18).
Press F1 for help on a map and remember that:
Green Maps – Live Adjustable
Blue Maps – Require programming to set

17
Output Testing
The X20 outputs can be tested live with our Syvecs - Scal program and information on
connecting to the unit can be found in the PC Connection section of the manual. After
connecting to the expander via USB, users will see an area at the bottom of the calibration tree
called output testing.
Here users are able to test the functions of each output by itself without the need for any
master/slave CAN communication.
NOTE: H-Bridge Output Mode / H-Bridge Output Frequency / Low Side Output Frequency maps
must be set and programmed onto the device for the output testing logic of these outputs to
apply. You cannot change these maps when Output Test Mode Enable is enabled.
Green Maps – Live Adjustable
Blue Maps – Require programming to set
Set a frequency you wish the outputs to be driven at in H-Bridge Output Frequency and Low
Side Output Frequency. Next set the H-Bridge Output Mode and Device - program the X20.
Output Test Mode Enable can then be enabled.
Now you can then set a duty for each output to be driven in H-Bridge Output Test Duty and Low
Side Output Test Duty. These maps can be adjusted live.
If H-Bridge Output Mode map is set on Full Bridge, the paired outputs used in the full bridge
individually set the drive direction.
For example: Motor is wired to HBR1 and HBR2, Output Mode is set to Full Bridge on HBR1 and
2.
Increasing Duty on HBR1 output duty cell will cause the full bridge to drive the HBR1 output
positive and the HBR2 output negative.
DAC Output Test Voltage is a live map which you can set the voltage that DAC1 -4 are driven at
in Output test mode.