Installation
Retrofitting the 8400 motec controller
Installation instructions
5
l
81
EDS84DG752 EN 7.0
5.5 Retrofitting the 8400 motec controller
8400 motec motor inverters for retrofitting existing drives and motors are supplied as set
so that they can be mounted directly without previous dismounting. A set consists of
components which are packaged and marked separately:
ƒ Wiring Unit, marked with − WU
ƒ Communication Unit, marked with − CU
ƒ Drive Unit, marked with − DU
ƒ Accessories (optional), marked with − opt x
Before working on an existing drive, make sure that the system is isolated from supply and
protected against restart.
5.5.1 Installation instructions
ƒ If the cooling air is polluted (fluff, (conductive) dust, soot, aggressive gases), take
adequate countermeasures, as e.g.:
– Regular cleaning of the cooling ribs at the controller
– Separate air guide
ƒ Possible mounting position:
– Observe information on mounting conditions in the chapter "Technical data".
ƒ Maintain the specified free spaces above and below the controller to other
installations!
ƒ Ensure untroubled cooling and exhaust air flow.
– Arrangement of several devices only to the sides
For mounting, use the screws of the motor terminal box. The installation material must
ensure a durable mechanical connection.
If screws must be replaced, we recommend the following, depending on the motor frame
size:
ƒ M4/M5/M6 cheese head screw, hexagon socket, according to DIN 912/ISO 4762
ƒ M4/M5/M6 cheese head screw, torx, according to ISO 14579
5.5.2 Preparing a motor for the 8400 motec installation
In order to install the 8400 motec, you must first remove the terminal box housing. In case
of a standard motor, proceed as follows:
1. After loosening the screws, remove the terminal box cover.
2. Loosening the screws of the terminal box housing. Keep the screws for later
fastening of the WU.
3. Remove the terminal box housing and make sure that the seal for the terminal box
flange is kept for further use with the WU.
4. Usually, no measures have to be taken at the motor terminal block to mount the
WU.
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