Bosch Rexroth IndraDrive Mi Project Planning Manual page 52

44/152 Bosch Rexroth AG | Electric Drives
Technical Data of the Components
Duty Cycle
DC Continuous Power PDC
and Controls
P Load
P Electric losses
V
Θ Temperature
Θ Highest temperature (motor housing)
max
t Time
T Cycle duration
C
Δt Operating time with constant load
P
Δt Idle time
V
Fig.5-2: Operating modes according to EN 60034-1: 1998
Operating mode S3 (intermittent duty) is supplemented by specification of the
duty cycle ED %. The duty cycle is calculated as follows:
ED Relative duty cycle in %
Δt Operating time with constant load
P
Fig.5-3: Relative duty cycle
The values specified in the documentation have been determined on the basis
of the following parameters:
Cycle duration: 1 min
Duty cycle ED: 25%
Power consumption at the point of maximum power (PML); mechanical power
and power dissipation
Rexroth IndraDrive Mi | Project Planning Manual