Digital Dosing Units 44
ERROR CODES Code Definition Possible Reason/Solution
A001 Strap “safety switch” is missing. Manufacturer Service.
A002 The nominal current of the dosing motor
(=100%, see name plate) is being exceeded
for more than 2 seconds by 30% or for a
maximum of 0.5 seconds by 80%.
Dosing motor defective or jammed. Check
the dosing motor and exchange it if
necessary. Check whether the dosing disc is
jammed by material and remove the material
if necessary.
A003 The nominal current of the dosing motor
(=100%, see name plate) is being exceeded
for more than one minute.
Dosing motor defective or jammed. Check
the dosing motor and exchange it if
necessary. Check whether the dosing disc is
jammed by material and remove the material
if necessary.
A004 Excess temperature. The temperature within
the controller housing is > 85°C
Check whether the cooling plate at the back
of the controller is sufficiently cooled down.
Use fan if necessary.
A005 The encoder (pulse generator) does not emit
any pulses for approximately 2 seconds.
If dosing motor does not turn, check whether
the dosing disc is jammed by material and
remove the material if necessary. If disc is
free, check the dosing motor, exchange if
necessary. If motor operates, but alarm
persists, check speed encoder output.
Replace as necessary.
A006 For approximately 4 seconds, there is a
deviation of the motor speed of more than
20% from the nominal rotational speed.
Defect at the dosing motor. Check dosing
motor, exchange if necessary. Check whether
the dosing disc is jammed by material and
remove the material if necessary. Power
supply part or control out of order.
Manufacturer Service.
A007 Dosing motor stops or doesn’t work. Brake at the dosing motor out of order.
Control system out of order. Manufacturer
service.
A008 The screw retract time of the processing
machine is shorter than 0.1 seconds.
The unit cannot be operated in combination
with this processing machine.
A009 The calculated speed of the motor is either
too high or too low.
Check basic parameter settings and recipe,
modify if necessary. May require changing to
different sized dosing disc.
A0010 The feed station is not able to meter the
desired recipe.
Check basic parameter setting and recipe,
modify if necessary. May require changing to
different sized dosing disc.
A0011 The raw material probe is not covered Refill Material.
A0012 The additive probe is not covered. Refill material.
A0014 Power failure interrupted run cycle. Clear alarm after power restored.
A0015 EEPROM data loss, EEPROM not
programmed.
Manufacturer Service.
A0016 No communication between HOST and
unit.
Check cable fittings. Manufacturer Service.