1.7 Servicing the Danfoss Decentral Products
1.7.1 Service
Breakdown of Danfoss drives or geared motors only occur under exceptional circumstances. As downtime represents lack of production, failures must be
located and defective components replaced quickly.
Danfoss' decentralised products place great emphasis on addressing these issues. This chapter also describes measures taken to make Danfoss decen-
tralised products superior in a service situation. For detailed information on specific service issues please consult relevant literature.
Centralised frequency converters from Danfoss have pluggable connections to facilitate service using fast and faultless replacement. The same concept
is used and improved for the decentralised drives.
Plug-and-drive
All the advanced and reliable electronics needed to ensure your motors
act smoothly, responsively and economically at each command are hid-
den inside the box lid and plug into connectors when mounted onto the
bottom section. The bottom section contains maintenance-free Cage
Clamp connectors and looping facilities for power and fieldbus cables well
protected against dust, hosing and cleaning agents. Once installed, com-
missioning and upgrading can be performed in no time simply by plugging
in another control lid. See the illustration.
Since the installation box only contains plugs, connectors and low density
pcb’s, it is not likely to fail. In case of a failure in the electronic part, just
remove the six screws, unplug the electronic part and plug in a new one.
Illustration 1.21:
Product concept
You only need standard installation material like cable glands, cables, etc., to commission and service a Danfoss decentralised drive. Special equipment
like hybrid cables not likely to be held in stock by a standard supplier of electric installation components is needed. This provides high flexibility and
maximum uptime.
1 The Decentral Concept
VLT
®
Decentral FCD 300 Design Guide
30
MG.90.S1.02 - VLT
®
is a registered Danfoss trademark
1
