Quick Start; Profibus Dp - Danfoss 5000 Flux Manual

Quick start

Details regarding the programming of the usual VLT
parameters may be gathered from the manual for
the VLT 5000/VLT 5000 Flux/VLT 6000 HVAC/VLT
8000 AQUA series.
The communication is established by setting the
parameters indicated below.
Details regarding the adjustment of the master are
provided by the master manual and by those
chapters in this manual that deal with the particu-
lars of the VLT PROFIBUS interface.
The required GSD file is available on the
internet at http://www.danfoss-sc.de.

Profibus DP

Parameter 904
This selects the desired informative data telegram
(PPO).
Parameter 918
This sets the address of the VLT station – one
specific address per VLT.
Parameter 801
This determines the transmission speed in bit/s.
The standard setting is 1.5 MBaud.
Parameter 502 = "BUS".
As an alternative to the switching of terminal 27, the
parameter 502 may be set to "BUS" in the factory
setting before the motor can even be started.
Please note the logic links of the parameters 502-
508 to the clamping functions which are also
active in the Profibus. (See operations manual for
an explanation.)
The VLT must be switched off/on once after
the Profibus parameters have been set.
4
VLT ® 5000/5000 Flux/6000 HVAC/8000 AQUA PROFIBUS
word consistency:
Module consistency means that a specific portion
of the PPO is defined as a connected module.
The parameter interface (PCV, length of 8 bytes) of
the PPO always has module consistency.
Word consistency means that a specific portion of
the PPO is divided into individual data sectors of
word length (16 bits).
The process data of the PPO may have either
module consistency or word consistency, as
desired.
Some PLCs, such as Siemens S7, require special
functions to call modules that are longer than 4
bytes (in the case of Siemens: "SFC", see master
manual).
This means that the PCV interfaces of the PPOs
can only be called through the SFC functions in
the case of Siemens (S7).
When configuring the PPO types, a distinction
is made between module consistency and
MG.90.D1.02 – VLT is a registered Danfoss trademark