Description

1) PUMP VMN LOW

The pump chopper power output is feedback to the µC. If this feedback

voltage is not coherent with the applied PWM, this fault condition is signalled.

There could be many causes:

– failure in the pump chopper power section

– failure in the pump chopper driving section

– failure in the pump chopper voltage feedback circuit

– dispersion in the pump motor to truck frame.

2) PUMP STBY I HIGH

The pump chopper current sensor feedback is out of the zero-current window

while no PWM is applied to the pump chopper. The most likely cause is a

failure in the current sensor.

3) PUMP TEMPERATURE

Pump chopper temperature is higher than 75°C, maximum current is

proportionally reduced. If the alarm is present when the controller is cold,

there is a failure in the temperature sensor or in the feedback circuit.

4) PUMP WARNING

This is a warning in the MASTER controller, which inform that the SLAVE is

in a pump chopper related fault condition.

5) PUMP INC. START

This is a warning in the pump chopper, which inform that an incorrect start

sequence happened on the pump

6) PUMP VACC NOT OK

This is a warning in the pump chopper, which inform that accelerator voltage

is 1 V grater than the minimum value programmed.

7) PUMP TH. SENS. KO

The range of pump chopper temperature sensor is always checked and a

warning is signalled if it is out of range.

When this warning is signalled, the maximum current of the pump chopper is

reduced to half.

Here following the list of parameters which can be set in this menu:

1) SPEED LIMIT

It determines the maximum lifting speed (per cent of voltage applied to the

motor) with a potentiometer control, when the potentiometer is at the

maximum of the programmed range.

2) PUMP IMAX

The maximum current of pump chopper.

3) PU. ACCELER. DELAY

Acceleration ramp of pump motor.

4) PU. DECELER. DELAY

Deceleration ramp of pump motor.

5) CREEP SPEED

It determines the minimum lifting speed (per cent of voltage applied to the

motor) with a potentiometer control, when the potentiometer is at the

minimum of the programmed range.

6) COMPENSATION

This parameter sets the voltage compensation (DV) applied to the motor

when the proportional lifting function is active. The value of this DV applied to

the motor is a function of the motor current. Aim of this function is to reduce,

as for as possible, the speed change when the motor is loaded. Increasing

the parameter, the DV will be increased.

7) 1ST SPEED FINE

This parameter sets the pump motor speed (voltage applied to the motor)

when the 1st speed request is active.

8) 1ST SPEED COMP.

This parameter sets the voltage compensation (DV) applied to the motor

when the 1st speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

9) 2ND SPEED FINE

This parameter sets the voltage compensation (DV) applied to the motor

when the 2nd speed request is active. The value of DV applied to the motor

is a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

10) 2ND SPEED COMP.

This parameter sets the voltage compensation (DV) applied to the motor

when the 2nd speed request is active. The value of DV applied to the motor

is a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

11) 3RD SPEED FINE

This parameter sets the voltage compensation (DV) applied to the motor

when the 3rd speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

12) 3RD SPEED COMP.

This parameter sets the voltage compensation (DV) applied to the motor

when the 3rd speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

13) 4TH SPEED FINE

This parameter sets the voltage compensation (DV) applied to the motor

when the 4th speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

14) 4TH SPEED COMP.

This parameter sets the voltage compensation (DV) applied to the motor

when the 4th speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

15) 5TH SPEED FINE

This parameter sets the voltage compensation (DV) applied to the motor

when the 5th speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

16) 5TH SPEED COMP.

This parameter sets the voltage compensation (DV) applied to the motor

when the 5th speed request is active. The value of DV applied to the motor is

a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

17) HYDRO SPEED FINE

This parameter sets the pump motor speed (voltage applied to the motor)

when the hydraulic steering function request is active.

18) HYDRO COMPENS.

This parameter sets the voltage compensation (DV) applied to the motor

when the hydro speed request is active. The value of DV applied to the motor

is a function of the motor current. Aim of this function is to reduce, as for as

possible, the speed change when the motor is loaded. Increasing the

parameter, the DV is increased.

19) HYDRO TIME

Hydraulic steering function delay.

The following table shows all the values of parameters.

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