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12-1
12 Constructing the Control Cabinet
12.1 Notes on Control Cabinet Project Planning
All ECODRIVE drive components, with the exception of motors, are
intended for mounting into a control cabinet. When planning the control
cabinet, take the technical data of the drive components into account.
To determine the necessary control cabinet size, not only the mechanical
dimensions (dimension sheets, etc.) but also such thermal features as the
power dissipation of the individual components, cooling air effluent
temperatures and so on must be taken into consideration.
The power dissipation of ECODRIVE03 drive controller are specified in
the diagrams on page 12-2.
The temperature increases of the cooling air occurring in the effluent
range of the drive controller DKC and the auxiliary braking resistor
module BZM are specified in the diagrams "Temperature increase vs.
P
BD
" on page 12-8. The distances to the temperature-sensitive control
cabinet components such as leads and cable channels must be
maintained.
Power dissipation
Power dissipation is determined by the current load and the regenerated
power. The actual generated power dissipation depends on the relevant
load cycle, which is limited by the servo motor being used.
On the average, the maximum continuous standstill current
I
dN
of the
motor flows through the drive controller
Look up in the relevant motor document both the continuous standstill
current I
dN
and torque M
dN
.
Determine rms torque M
eff
of the application (see motor document).
Determine the following relationship current I
dN
eff
dN
M
M
*
I
I
=
Fig. 12-1:
Determining current I
Using current I, find the corresponding value of the current-dependent
power dissipation
P
V, DKC
, using the diagrams "Determining Power
Dissipation in the control cabinet".
Add both power losses (
P
V,DKC
and
P
V,Braking resistor
). Use the sum (
P
V,ges
)
when planning the control cabinet.
Consider further components such as smoothing chokes, filters etc.
Determining power dissipation
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Содержание BZM 01.3-01-07
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