Delta ABS · Technical Data Sheet
Engineering specifications for the Delta ABS system and supplied sensors.
3D CAD model of the main ABS unit in STEP format
3D CAD model of the wheel speed sensor in STEP format
| Parameter | Delta ABS |
|---|---|
| Continuous operating voltage | 9–16 V |
| Peak supply voltage | 24 V for 100 ms |
| Ignition / solenoid / pump fuses | 10 A / 20 A / 40 A |
| Pump power | 280 W |
| Solenoid power | 150 W |
| Electronics power | 10 W |
| Minimum ABS trigger pressure | 2 bar |
| Typical ABS working pressure | 25–65 bar |
| Upper ABS operating limit | 100 bar |
| 100–115 bar | Solenoids may close too slowly to prevent wheel lock |
| Above 115 bar | ABS will not operate correctly |
| Hydraulic no-damage limit | 200 bar; not an ABS operating limit |
| Solenoids de-energized | Inlet valves open; outlet valves closed; conventional braking path |
| Wheel sensors | Four two-wire active Hall-effect; 7 mA OFF / 14 mA ON |
| Physical trigger wheel | Uniformly spaced teeth, no gaps; recommended minimum 40; up to 100 tested |
| Supplied sensor air gap | 0.5–1 mm |
| Sensor orientation | Critical with physical teeth; no specified orientation for magnetic coded rings |
| Main ABS connector | 38-pin 1928405167; see ABS main unit pin-out below |
| Brake-light output thresholds | 2 bar ON / 1 bar OFF |
| Auxiliary connector | 12-pin DTM06-12S; see User Manual auxiliary connector pin-out |
| Auxiliary connector pin 12 | Ignition-switched 12 V output for external devices, e.g. data loggers; 5 A maximum; not an ABS power input |
| Auxiliary 12 V output current capacity | 5 A maximum |
| CAN bus assignments | CAN 1 private; CAN 2 public |
| Public CAN | 500 kbit/s or 1 Mbit/s, configurable |
| Operating temperature | 0–85 °C |
| Hydraulic unit enclosure | Dust- and damp-proof |
| Maximum shock | 50 g for less than 6 ms |
Pressure Sensor Characteristics
| Parameter | Value |
|---|---|
| Measurement range / reference | 0–260 bar absolute |
| Maximum pressure | 320 bar |
| Output | Ratiometric, 10–90% of supply; 0.5–4.5 V at 5 V supply |
| Transfer at 5 V supply | 0.5 V = 0 bar absolute; 4.5 V = 260 bar absolute. P (bar absolute) = 65 × (V − 0.5) within this span |
| Tolerance, full scale | ±1% (±2.6 bar) at 0–100°C; ±1.5% (±3.9 bar) at −40–0°C and 100–130°C |
| Response time | 2 ms |
| Supply / maximum supply | 4.75–5.25 V / 16 V maximum; use the regulated 5 V sensor supply |
| Current | 12 mA |
| Sensitivity / offset at 5 V | 15.38 mV/bar / 500 mV |
| Output resistance / load capacitance | 10 Ω / 10 nF |
| Operating and media temperature | −40–130°C |
| Storage temperature | −30–60°C |
| Maximum vibration | 560 m/s² at 800–900 Hz; 350 m/s² at 1,000–2,500 Hz |
| Thread / wrench size / seal | M10 × 1 mm / 27 mm / sealed cone |
| Installation torque | 22 ± 2 N·m into aluminium; 32.5 ± 2.5 N·m into steel |
| Sensor mass without wire | 35.2 g |
| Protection | Overvoltage, reverse polarity and short circuit |
| Fluid compatibility | Brake fluid, petrol, diesel, engine oil and transmission oil |
| Construction | Thin-film piezoresistive sensing; stainless-steel sensing cell and pressure port, hermetically welded |
| Mounting / validation | Any orientation; avoid mounting directly on the engine block because of vibration |
| EMC / ESD | Automotive electromagnetic compatibility and electrostatic discharge protection |
If the optional rear sensor is not fitted, its input reads maximum pressure and the calculated brake bias goes to maximum rear bias. Ignore both displayed rear pressure and brake bias in that configuration.
Yaw Rate Sensor Characteristics
These specifications describe the IMU sensor. Yaw rate and yaw acceleration are available through the user-defined CAN outputs, with scaling of 0.01 °/s/bit and 0.125 °/s²/bit respectively. See the User Manual CAN Export Data List for the data format and output configuration.
| Parameter | Value |
|---|---|
| Sensor type | Yaw sensor with CAN interface and micromechanical acceleration sensor |
| Yaw rate offset | ≤3.5°/s |
| Linear acceleration sensitivity | 7,849 LSB/g |
| Start-up time | ≤1 s |
| Dynamics | 15 Hz |
| Storage temperature | −40–85°C |
| Supply voltage | 14 V nominal |
| Connector | Four pins |
| Connector pins | 1 ground; 2 CAN low; 3 CAN high; 4 12 V supply |
| Yaw rate characteristic | −100°/s = 12,768 LSB; 0°/s = 32,768 LSB; +100°/s = 52,768 LSB |
| Yaw rate conversion | Yaw rate (°/s) = (code − 32,768) ÷ 200 |
| Delta ABS mounting | Level near the vehicle centre, connector rearward; maximum deviation ±5° from the optimum mounting angle |
| Yaw rate minimum resolution | ±0.1°/s |
| Yaw rate sensitivity | 200 LSB per °/s |
| Yaw sensitivity tolerance over service life | ≤5% |
| Yaw offset error over service life | ≤2°/s |
| Yaw non-linearity | ≤1°/s maximum deviation from optimum linear approximation |
| Yaw electrical noise (100 Hz bandwidth) | ≤0.2°/s RMS |
| Acceleration sensitivity tolerance over service life | ≤5% |
| Acceleration offset | ≤0.03 g |
| Acceleration offset error over service life | ≤0.1 g |
| Acceleration electrical noise (100 Hz bandwidth) | ≤0.01 PN |
| Operating temperature | −40–85°C |
| Supply voltage range | 7–18 V |
| Current consumption at 12 V | <130 mA |
| Service-life basis for tolerances | 6,000 operating hours over 15 years |
ABS Warning Lamp Characteristics
Red LED indicator with black bezel.
The warning lamp is polarity sensitive.
| Parameter | Value |
|---|---|
| Type | LED panel indicator, standard bezel |
| LED colour / bezel finish | Red / black |
| Positive connection | Gold tab marked + → white/red loom wire |
| Negative connection | Silver tab marked − → red/pink loom wire |
| Rated voltage | 12 V DC |
| DC current | 20 mA |
| Luminous intensity | 250 mcd |
| Electrical / optical test temperature | 25 °C |
| Application temperature | −20 to +60 °C |
| Storage temperature | −25 to +80 °C |
| Protection rating | IP67 when fitted with the supplied gasket |
| Mounting thread | M14 × 1 |
| Bezel diameter | 16 mm |
| Length behind bezel, as dimensioned | 41 ± 2 mm |
| Front projection, as dimensioned | 5 mm |
| Nut spanner size | 17 mm |
| Terminal dimensions | 2.8 × 0.8 mm; 9 mm long |
| Terminal connection | Terminals are not qualified for soldering |
| Plastic material | Polycarbonate; limited chemical resistance |
| Colour variation | Component tolerances may cause colour-temperature variation |
| Compliance | RoHS and REACH SVHC |
Slip Switch Position, Resistance and Voltage
| Position | Resistance (kΩ) | Pull-up resistance (kΩ) | Voltage (V) |
|---|---|---|---|
| 1 | 4.7 | 47 | 0.45 |
| 2 | 10 | 47 | 0.88 |
| 3 | 15 | 47 | 1.21 |
| 4 | 22 | 47 | 1.59 |
| 5 | 33 | 47 | 2.06 |
| 6 | 47 | 47 | 2.50 |
| 7 | 68 | 47 | 2.96 |
| 8 | 100 | 47 | 3.40 |
| 9 | 220 | 47 | 4.12 |
| 10 | 470 | 47 | 4.55 |
ABS main unit pin-out
38-pin 1928405167 connector, SCS Delta ABS Gen 2 Rev. 3 allocation. This is the main ABS connector; the auxiliary connector pinout is listed in the User Manual. Pin numbers are viewed as numbered in the allocation document. Confirm the mating-face orientation on the connector before wiring.
| Pin | Signal name | Function / note |
|---|---|---|
| 1 | VBatt Pump | Pump battery supply; 40 A fuse |
| 2 | Low Side Output 12 | Front Right Wheel Speed Output (0.75A Open Collector) |
| 3 | Low Side Output 10 | ABS Active Output (0.75A Open Collector) |
| 4 | Front Right Wheel Speed Ground | Sensor Ground |
| 5 | VREF1 | 5V Sensor Supply for Slip Potentiometer (200mA max) |
| 6 | VREF2 | 5V Sensor Supply for Pressure Sensors (200mA max) |
| 7 | Sensor Ground | Sensor Ground for Slip Potentiometer |
| 8 | Front Left Wheel Speed Ground | Sensor Ground |
| 9 | Sensor Ground | Sensor Ground |
| 10 | Low Side Output 9 | ABS Warning Lamp Output (0.75A Open Collector) |
| 11 | Low Side Output 15 | Speedometer Output (0.75A Open Collector) |
| 12 | Low Side Output 14 | Rear RIght Wheel Speed Output (0.75A Open Collector) |
| 13 | VBatt Supply | Solenoid and Wheel Speed sensor battery supply; 20 A fuse |
| 14 | CAN 2L | Public CAN 2 Low |
| 15 | Low Side Output 16 | Brake Light Output (0.5 A maximum open collector) |
| 16 | Low Side Output 13 | Rear Left Wheel Speed Output (0.75A Open Collector) |
| 17 | Low Side Output 11 | Front Left Wheel Speed Output (0.75A Open Collector) |
| 18 | Rear Left Wheel Speed Ground | Sensor Ground |
| 19 | Front Left Wheel Speed Input | 14mA/7mA Hall Effect |
| 20 | CAN 1L | Private CAN 1 Low |
| 21 | Analogue Input 1 | Spare Analogue Input LF |
| 22 | Analog Input 5 | Slip Potentiometer Signal (0-5V) |
| 23 | Analog Ground 2 | Sensor Ground |
| 24 | Analogue Input 2 | Spare Analogue Input RF |
| 25 | Ground Pump | Direct to Battery Negative |
| 26 | CAN 2H | Public CAN 2 High |
| 27 | Analogue Input 3 | Spare Analogue Input RR |
| 28 | Ignition | Ignition wake-up supply; 10 A fuse |
| 29 | Right Rear Wheel Speed Ground | Sensor Ground |
| 30 | Analogue Input 4 | Spare Analogue Input LR |
| 31 | Rear Left Wheel Speed Input | 14mA/7mA Hall Effect |
| 32 | Right Rear Wheel Speed Input | 14mA/7mA Hall Effect |
| 33 | CAN 1H | Private CAN 1 High |
| 34 | Front Right Wheel Speed Input | 14mA/7mA Hall Effect |
| 35 | Off Switch Input | System active when switched to ground |
| 36 | Front Brake Pressure Input | Front Brake Pressure Input |
| 37 | Rear Brake Pressure Input | Rear Brake Pressure Input |
| 38 | Power Ground 1 | Direct to Battery Negative |
Weights
| ABS Hydraulic Control Unit | 1500 g |
|---|---|
| Pressure Sensor | 35.2 g (without wire) |
| 10 Position slip switch including connector | 36 g |
| Wiring Harness, including ON/OFF switch and fault light | 1450 g |
| Speed Sensor x 4 | 104 g |
| Yaw Sensor | 65 g |
| CAN interface | 216 g |
Electrical Characteristics
| Supply Voltage | 9 V to 16 V |
|---|---|
| Peak Supply Voltage | 24 V for 100 ms |
| Power Consumption - Pump | 280 W |
| Power Consumption – Control Solenoids | 150 W |
| Power Consumption - Electronics | 10 W |
System overview
Motorsport ABS kit with hydraulic modulator, front and rear brake circuits, four wheel-speed inputs, IMU, slip switch, ABS OFF switch, warning lamp, pressure input(s), service CAN and configurable public CAN output.