Servo Dynamics DigiDrive 2000 Series, Информационное руководство

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Chapter D - Setting to work
Rev. A 10-99
DigiDrive Manual Series 2000 / 4000
Pg 49
Servo Dynamics Corp. 21541-D Nordhoff St. Chatsworth, CA 91311 www.servodynamics.com
I2
T MOTOR
, A
DDRESS
5
The I
2
t motor (P5) is defined as elapsed time in « ms » when I
2
t value progresses from zero to I
2
t
threshold (P192) when drive current equals the double of nominal current.
I
2
t evolution for I
INST
= I
NOM
and I
INST
= 2
·
I
NOM
:
Instant I2t, Address 193 :
Instant I
2
t (P193) is the instantaneous value of the I
2
t. In comparison of the I
2
t threshold,
this parameter gives an information about motor load.
I2t threshold, Address 192 :
The I
2
t threshold (P192) is defined as equal to the I
2
t value when continuous drive current
equals nominal current.
I
2
t warning (if I
2
t not latched) :
When I
2
t value reaches the I
2
t threshold, the maximal current is limited to nominal current
and 2 is displayed while I
2
t value is higher than I
2
t threshold.
I
2
t alarm (if I
2
t latched) :
The drive power stage is disabled when the I
2
t value reaches the I
2
t threshold and 2 is
displayed.
The instant I
2
t in comparison of I
2
t threshold can be observed on the Scope of the user
software. This method is useful to determine and to check the I
2
t value and the motor
load.