Product manual

Welding equipment
Appendix 1
Appendix1eng_Konfigurationsparametrar.fm 59
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The configuration parameters are defined for 3 demands:
1 They should be an integer in order to simplify handling in the
microprocessor in the PIB.
2 The integer should be large enough so that the desired accuracy and
resolution are obtained.
3 Programming from the robot should be possible to be expressed in actual
quantities, for example, 21.4 m/min for the wire speed, 32.2 V for the
welding voltage, etc. A multiplier with one or more indexes to the power of
ten is required in several cases:
The setting range for the parameters and a number that defines what the
configuration value is to be multiplied by in order to express the true
relation is stated in the column3DUDPHWHUUDQJHGHQRPLQDWLRQin
7DEOH&RQILJXUDWLRQSDUDPHWHUVRQSDJH . For example:
If "MotorCurrentLim" is defined to the value 80, the definition means
"Motor Current Limit {0 ...100}0.1 A" that the max permitted current is 8
A.
If "ProcEquipRefConv" is defined to the value 8260, the definition means
{1000 ...30000}E
-3
that the relation Output voltage/Reference is 8.260 etc.
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The conversion factor is obtained from
k
0
=g x n x 100/(π x D x 60) [Hz/m/min x 100], where:
-k
0
is the conversion factor for tacho type 0
- g = The gearbox’s gear factor
- n = Number of tacho periods/motor speed
- D = Feed roller’s diameter in metres
- 100 is the multiple.
In those cases k
0
should be >65535, Tacho type 2 should be configured and at the
same time the conversion factor should be defined as k2 = k
0
/2.
The maximum permitted tacho frequency is 27000 Hz, which limits the maximum
theoretical feed speed to Vmax = (π x D x 60 x 27000/(g x n)[m/min]
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The control parameters are: Feed Forward factor, Motor Regulator P-factor, Motor
Regulator I-factor
These parameters are tested for the wire feed units supplied as standard and
adjustment should be avoided. Modifications can result in incorrect speed or
instability. Adjustment ought to be carried out in consultation with service
personnel from ABB Automation Technology Products AB.