Lenze EVS9321-Ex User Manual

Safety instructions
Thermal motor monitoring
Parameter setting
2

13
EDKVF93−03 EN 2.0
2.2.2 Parameter setting
Parameter setting
Code Meaning Value range Lenze setting
C0066 Display of the I
2
xt utilisation of the motor 0 ... 250 % −
C0120 Threshold: Triggering of an "OC6" error 0 ... 120 % 0 %
C0127 Threshold: Triggering of an "OC8" error 0 ... 120 % 0 %
C0128 Thermal time constant of the motor 0.1 ... 50.0 min 5.0 min
C0606 Response to "OC8" error Trip, warning, off Warning
Calculate release time
t +*(C0128) @ ln
ȧ
ȡ
Ȣ
1 *
y ) 1
ǒ
I
M
I
r
Ǔ
2
@ 100
ȧ
ȣ
Ȥ
I
M
Actual motor current
I
r
Rated motor current
y C0120 or C0127
ƒ The thermal capacity of the motor is expressed by the thermal motor time factor
(C0128). Please see the rated data of the motor for the value or ask the
manufacturer of the motor.
Read the release time off the diagram
Diagram for the determination of the release times of a motor with a thermal motor time
factor of 5 min:
I =3×I
mot r
0
50
100
120
0 100 200 300 400 500 600 700 800 900
1000
t [s]
I t [%]
2
I =2×I
mot r
I =1.5×I
mot r
I=1×I
mot r
9300std105
Fig. 2−1 I
2
× t−monitoring: Release times for different motor currents and trigger thresholds
Imot Motor current
I
r
Rated motor current
I
2
tI
2
t load
T Time
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Lenze EVS9321-Ex Specifications

General

Brand	Lenze
Model	EVS9321-Ex
Category	Controller
Language	English