Specifications

CONFIDENTIAL
Bendix Commercial Vehicle Systems LLC
Elyria, OH 44036
PRODUCT SPECIFICATION - BW-283-PR
SPEC. BW-283-PR
73 SHEETS
SHEET NO. 17
3.1.9 Auxiliary Inputs & Outputs (I/O)
The TABS6 ECU is designed to provide up to five- (5) high-side drivers (power),
and one- (1) low-side drivers (ground) for use of auxiliary functions, for additional
modulators in a multi-channel ABS system.
Matrix of Available Auxiliary Functions
Standard
2S/1M AUX
2S/1M AUX1 AUX2 AUX3 AUX4 AUX5 AUX6
2S/2M AUX1 AUX2 AUX3 AUX6
4S/2M AUX1 AUX2 AUX3 AUX6
Premium
4S/3M AUX6
Table 2: TABS6 Auxiliary Input & Outputs (I/O’s) Matrix
Name Model ECU Pin Auxiliary Functions Default Function
AUX Standard C
• High-Side Driver… or
• Digital Input… or
• Analog Input
None
AUX1 Premium 16
• High-Side Driver… or
• Digital Input
Modulator 3 (MOD3)
Hold Solenoid
AUX2 Premium 10
• High-Side Driver… or
• Digital Input
Modulator 3 (MOD3)
Release Solenoid
AUX3 Premium 15
• High-Side Driver… or
• Digital Input
Modulator 2 (MOD2)
Hold Solenoid
AUX4 Premium 9
• High-Side Driver… or
• Digital Input
Modulator 2 (MOD2)
Release Solenoid
AUX5
1
Premium 4
• Low-Side Driver… or
• Analog Input
Modulator 3 (MOD3)
Common
AUX6 Premium 3
• High-Side Driver… or
• Digital Input
J1587 Diagnostic Power
Table 3: Standard TABS6 Auxiliary (AUX) Capabilities
Auxiliary Pins AUX, AUX1-4 & AUX6 Auxiliary Pin AUX5 Only
Electrical Characteristic Min Typ Max Electrical Characteristic Min Typ Max
Load Power, Watts 56 Load Power, Watts 112
Load Resistance, Ohms 4 2k Load Resistance, Ohms 2.5 500
Output Current, mA 2.5 3 3.5 Output Current, mA 2 5 7
Off-State Load Current, mA 0.5 0.8 1 Off-State Load Current, mA 1.2 1.8 2.5
Saturation Voltage, V 0.15 0.2 0.3 Saturation Voltage, V 0.08 0.12 0.15
Clamping Voltage, V 41 47 52 Clamping Voltage, V 60 - 73
Pull-up Resistor, Kohms 14.7 Pull-up Resistor, Kohms 14k7
Input Low Voltage, V -0.4 0 2 Analog Input Voltage, V 0 16
Input High Voltage, V 8 12 16
Table 4: TABS6 Auxiliary Electrical Characteristics
1
Note: AUX1 and AUX2 must also be configured as inputs if AUX5 is configured as input.
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