Lenze ECSEM Series Mounting Instructions

Safety instructions
Thermal motor monitoring
Forced ventilated or naturally ventilated motors
2

78
EDKCSEX064 DE/EN/FR 6.0
2.2.1 Forced ventilated or naturally ventilated motors
Parameter setting
The following codes can be set for I
2
x t monitoring:
Code Meaning Value range Lenze setting
C0066 Display of the I
2
x t load of the motor 0 ... 250 % −
C0120 Threshold: Triggering of error "OC6" 0 ... 120 % 0 %
C0127 Threshold: Triggering of error "OC8" 0 ... 120 % 0 %
C0128 Thermal motor time constant 0.1 ... 50.0 min 5.0 min
C0606 Response to error "OC8" TRIP, warning, off Warning
Calculate release time and I
2
x t load
Formula for release time Information
t +*(t) ln
ȧ
ȧ
ȡ
Ȣ
1 *
z ) 1
ǒ
I
Mot
I
N
Ǔ
2
 100
ȧ
ȧ
ȣ
Ȥ
I
Mot
Actual motor current (C0054)
I
r
Rated motor current (C0088)
t Thermal motor time constant
(C0128)
z Threshold value in C0120 (OC6) or
C0127 (OC8)
Formulae for I
2
x t load Information
L(t) +
ǒ
I
Mot
I
N
Ǔ
2
100%
ǒ
1 * e
*t
t
Ǔ
L(t) Chronological sequence of the
I
2
x t load of the motor
(Display: C0066)
I
Mot
Actual motor current (C0054)
Ir Rated motor current (C0088)
t Thermal motor time constant
(C0128)
If the controller is inhibited, the I
2
x t load is reduced:
L(t) + L
Start
 e
*
t
t

Ǹ
L
Start
I
2
x t load before controller inhibit
If an error is triggered, the value
corresponds to the threshold
value set in C0120 (OC6) or
C0127
(OC8).

Lenze ECSEM Series Specifications

General

Brand	Lenze
Model	ECSEM Series
Category	Control Unit
Language	English