Zapi EPS-AC0 User Manual

AEMZP0BA - EPS-AC0 - User Manual Page - 69/95
1) SPEED LIMIT
(Stepper Motor version only). Level 0 to 9. It determines the scaling factor
between the speed of the steering wheel and the speed of the steering motor
but only when the steering wheel is fast turning. By increasing the SPEED LIMIT
value, the steering motor speed increases too. In practice, it sets the maximum
motor speed when the steering wheel is fast turning.
2) SENSITIVITY
(Stepper Motor version only). Level 0 to 9. It determines the scaling factor
between the speed of the steering wheel and the speed of the steering motor
but only when the steering wheel is slow turning. By increasing the
SENSITIVITY value, the steering motor speed increases too. In practice, it
changes the sensitivity of the steering wheel when it is slow turning.
3) CREEP SPEED
Level 0 to 9. It sets a minimum amount of motor torque when the steering motor
is slow turning. It is useful (together with the ANTIROLLBACK parameter, see
12.4.4.12) to neutralize the recall torque generated by the elastic tyre on the
steered wheel.
4) AUX FUNCTION #3
Depending on the configuration, this parameter has different meaning.
RTC version:
Level 0 to 9. This setting performs the Dynamic Numbness compensation: it
consists of a reduction in the steer sensitivity when the truck is driving at high
speed. To get this goal, this setting adjusts the maximum angle at full truck
speed. When the truck speed increases, the maximum steered wheel angle
reduces proportionally. When the truck is full speed the steered wheel angle is
limited to a percentage of the absolute maximum steered wheel angle (i.e. 90
degrees) specified with this setting.
- LEVEL 0: Maximum steered angle at full truck speed is 73% (i.e. 66
degrees).
- LEVEL 1: Maximum steered angle at full truck speed is 66% (i.e. 59
degrees).
- LEVEL 2: Maximum steered angle at full truck speed is 59% (i.e. 53
degrees).
- LEVEL 9: Maximum steered angle at full truck speed is 10% (i.e. 9
degrees).
Each step has a weight of 7%.
Stepper Motor version:
Level 0 to 9. This setting performs the Dynamic Numbness compensation: it
consists of a reduction in the steer sensitivity when the truck is driving at high
speed. To get this goal, it is necessary to attenuate the scaling factor between
the speed of the steering wheel and the speed of the steering motor. AUX
FUNCTION #3 does that but only when the steering wheel is fast turning. This
attenuation must be proportional to the drive speed. At full drive speed the
attenuation of the scaling factor is maximum.
AUX FUNCTION #3 to Level 0 means no attenuation of the scaling factor with
the truck speed.
AUX FUNCTION #3 to Level 9 means maximum attenuation of the scaling
factor with the truck speed.
Obviously, to perform the Dynamic Numbness compensation, it is necessary to
know the drive speed and so the eps-ac0 must be CAN Bus connected.

Zapi EPS-AC0 Specifications

General

Brand	Zapi
Model	EPS-AC0
Category	Controller
Language	English