For arrangement of the devices in the control cabinet, take the re‐
quired minimum distances into account besides the device dimen‐
sions.
Distance to the Bottom of the Devices
In order that there is sufficient cooling air available for cooling the devices, a
minimum distance to other devices must be complied with from the bottom of
the devices. This applies both to the intake space of devices with forced cool‐
ing and to devices with cooling by natural convection.
In the thermal steady-state condition of the drive system, the temperature at
the air intake of the device is the ambient temperature of the device. The
temperature at the air intake is relevant when you check whether the allowed
ambient temperature range T
a_work
(see technical data of the respective de‐
vice) has been complied with.
Keep the space at the air intake free from unnecessary barriers.
Run the cables as short as possible and without loops.
Do not place loads with power dissipation (e.g. mains chokes,
braking resistors) near the air intake.
Use barrier plates, if necessary.
Form a channel which is as obstacle-free as possible and corre‐
sponds at least to the cross section "d
bot
× mounting depth". The
channel should lead with at least this cross section to the air in‐
takes at the bottom and at the top of the devices.
If there are different minimum distances for the individual devices
in a drive system, the greatest value determines the minimum dis‐
tance to be observed for the entire row in the drive system.
Distance to the Top of the Devices
In order that the cooling systems can transport the cooling air through the de‐
vices and heat does not accumulate, a minimum distance to the top of the
devices must be complied with.
Keep the space at the air outlet free from unnecessary barriers.
Where possible, run the cables and lines outside the outlet aper‐
tures.
The supplied cooling air is heated up due to the power dissipation generated
in the devices.
In a distance of d
top
above the devices, the temperature of the cooling air is
up to 105 °C.
Directly at the outlet holes – especially of devices with integrated braking re‐
sistor and DC bus short circuit device – the temperature of the cooling air can
be significantly higher than 105 °C.
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
Bosch Rexroth AG
191/309
Arranging the Components in the Control Cabinet
