Forced Ventilated Or Naturally Ventilated Motors - Lenze 9300 vector Série Instructions De Montage

2 Safety instructions
Thermal motor monitoring

Forced ventilated or naturally ventilated motors

2.2.1 Forced ventilated or naturally ventilated motors
Parameter setting
The following codes can be set for I
Code
C0066
C0120
C0127
C0128
C0606
Calculate release time and I
Formula for release time
t + * ( t )
Formulae for I
I
Mot
L(t) +
If the controller is inhibited, the I
L(t) + L
Read release time in the diagram
Diagram for detecting the release times for a motor with a thermal motor time constant
of 5 minutes (Lenze setting C0128):
L [%]
I = 3 × I
Mot
120
100
50
0
0 100
Fig. 2−1
128
Meaning
2
Display of the I x t load of the motor
Threshold: Triggering of error "OC6"
Threshold: Triggering of error "OC8"
Thermal motor time constant
Response to error "OC8"
2
x t load
z ) 1
ln 1 *
2
I Mot
100
I N
2
x t load
2
*t
1 * e
t
100%
I
N
2
x t load is reduced:
t
*
e t
Start
I = 2 × I I = 1.5 × I
N Mot N Mot N
200 300 400 500
2
I × t−monitoring: Release times for different motor currents and trigger thresholds
I Actual motor current (C0054)
Mot
I Rated motor current (C0088)
r
2
L I x t load of the motor (display: C0066)
T Time
l
2
x t monitoring:
Value range
0 ... 250 %
0 ... 120 %
0 ... 120 %
0.1 ... 50.0 min
TRIP, warning, off
Information
I Actual motor current (C0054)
Mot
I Rated motor current (C0088)
r
t
Thermal motor time constant (C0128)
z Threshold value in C0120 (OC6) or C0127 (OC8)
Information
L(t) Chronological sequence of the I
(Display: C0066)
I Actual motor current (C0054)
Mot
Ir Rated motor current (C0088)
t
Thermal motor time constant (C0128)
2
L I x t load before controller inhibit
Start
If an error is triggered, the value corresponds to the
threshold value set in C0120 (OC6) or C0127 (OC8).
I = 1 × I
Mot N
600 700 800
Lenze setting
−
0 %
0 %
5.0 min
Warning
2
x t load of the motor
t [s]
900
1000
9300STD105
EDKVF9333V DE/EN/FR 7.2