SEW-Eurodrive MOVIPRO PHC11A-M1-2A-A1 Series - Cyclic Duration Factor (CDF); Duty Types

9
Operation
Cyclic duration factor (CDF)
Operating Instructions – MOVIPRO
®
PHC11A-..M1-..2A-A1/..
89
INFORMATION
• For operating modes with encoder feedback, parameters must not be changed in
cycles faster than 2 seconds. This ensures that the encoders are initialized.
• The maximum output frequency in the VFC operating modes without encoder
feedback is 150 Hz.
• The maximum output frequency in the V/f operating mode and all operating
modes with encoder feedback is 599 Hz.
• If the maximum output frequency is exceeded, error 08, "Speed monitoring," is
displayed.
9.1 Cyclic duration factor (CDF)
The cyclic duration factor (CDF) is the ratio between the load duration and the cycle
duration. The cycle duration is the sum of the switch-on times and the de-energized
rest periods. A typical value for the cycle duration is 10 minutes.
CDF
Total switch-on time t t t
Cycle duration T
=
+ +
x
( )
( )
%
1 2 3
100
27021597976207755
9.2 Duty types
9.2.1 Environmental conditions
The following ambient conditions are permitted in accordance with CDF information
IEC 60034-1 (2005):
• Ambient temperature ϑ
U
[+5 °C – +40 °C (+41 – +104 °F)]
Each further temperature increase by 1 °C (1.8 °F), results in a 4% CDF decrease.
• I
D
= 100 % I
N
at f
PWM
= 4 kHz
• Installation sites up to 1000 m above sea level
9.2.2 Duty type S1
Continuous duty: Operation with a constant load state, the motor achieves a thermal
steady state.
P, ϑ
ϑ
max
S1
P
ϑ
t
2325833867
20278543/EN – 09/2014