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VLT
®
5000/5000 Flux/6000 HVAC/8000 AQUA PROFIBUS
MG.90.D1.02 – VLT is a registered Danfoss trademark
29
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VLT parameters
Only the parameters (800-806 and 900, 901, 9..)
specific to the PROFIBUS are described in this
manual. For any other parameters of the VLT5000
series/
VLT 5000 Flux, VLT 6000 HVAC/VLT 8000
AQUA
and their functions, please refer to the VLT
5000
/5000 Flux/6000 HVAC/8000 AQUA
series
operations manual.
Please pay special attention to the following
parameters which are not described in this
manual:
002:
In the case of local operation, a control
via PROFIBUS is not possible.
502-508: Selection of how the PROFIBUS control
commands are to be linked with the
control commands of the digital inputs
of the control card.
512:
Control word profile, selection of a con-
trol word according to PROFIDRIVE or
according to a control word specified by
Danfoss.
515-538:
Data output parameters which can be
used for the display of a variety of cur-
rent data of the VLT, e.g. current status
of the analog and digital inputs of the
control card and, therefore, their usage
as inputs for the master.
■
Parameters specific to PROFIBUS
8 0 0 Protocol selection (PROTOCOL SELECT)
Value
PROFIBUS FMS
[0]
✭
PROFIBUS DP
[1]
Function
Selection of the PROFIBUS protocol supported by
the master.
Description of the selection
FMS:
Communication according to DIN 19245,
part 2
DP:
Communication according to EN 50170,
part 3
In the event of an update of parameter 800, even
with an unchanged data value, the PROFIBUS op-
tion is initialized, which means that all communica-
tion parameters 801, 802, ..., e.g. slave address,
baud rate, PPO type etc., are being updated.
801
Baud rate selection (BAUD RATE SELECT)
Value
Auto (AUTO DETECTION)
[0]
9.6 kBaud
(9.6 kBAUD)
[1]
19.2 kBaud
(19.2 kBAUD)
[2]
93.75 kBaud
(93.75 kBAUD)
[3]
187.5 kBaud
(187.5 kBAUD)
[4]
500 kBaud
(500 kBAUD)
[5]
✭
1500 kBaud
(1500 kBAUD)
[6]
3000 kBaud*
(3000 kBAUD)
[7]
6000 kBaud*
(6000 kBAUD)
[8]
12000 kBaud*
(12000 kBAUD)
[9]
*only DP
Function
Selection of the PROFIBUS transmission speed. It
must correspond to the transmission speed of the
master and the other PROFIBUS nodes.
Description of the selection
Auto:
The current PROFIBUS transmission speed
is determined automatically when the con-
nected bus is active.
9.6-12000 kBaud:
When a fixed baud rate is se-
lected, the duration of the turn-on phase is
reduced, since it can take a few seconds to
determine the current baud rate.
During an update of parameter 800 or during
the next turn-on procedure, the parameter
801 changes too.
8 0 2 Minimum station delay
(MIN. STAT. DELAY)
Value
25 - 2000 bit times
✭
1500
Function
The minimum response time of the VLT, i.e. the
minimum time from the receipt of a telegram to the
dispatch of the reply, can be adjusted between 25
and 1000 bit times.
Parameter 802 is only active when
FMS
has
been selected in parameter 800. The station
delay time is fixed at 11 bit times when
DP
has been selected.
✭
Factory settings
Parameters