MG.90.D1.02 – VLT is a registered Danfoss trademark
18
VLT
®
5000/5000 Flux/6000 HVAC/8000 AQUA PROFIBUS
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Control word / status word
The bits of the ”control word” tell the VLT how to
respond, while the status of the bits in the ”status
word” transmits information about the VLT to the
master.
One can select through parameter 512 whether the
control word and status word are to be defined
according to ”Profidrive” (field bus) or according to
”FC Drive (Danfoss)”. ”FC Drive (Danfoss)” is the
factory setting.
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Control word according to Profidrive standard
(Parameter 512 = field bus)
The control word is used to send commands from a
master (e.g. a PC) to a slav
e.
Master
➝
Slave
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit no.
Bit Bit = 0
Bit =1
00 OFF 1
ON 1
01 OFF 2
ON 2
02 OFF 3
ON 3
03 Coasting
No coasting
04 Quick stop
Ramp
05 Save output frequency
Ramp possible
06 Ramp stop
Start
07 Without function
Reset
08 Jogging speed 1 OFF
ON
09 Jogging speed 2 OFF
ON
10 Data not valid
Valid
11 Without function
Frequ. correction
DOWN (reduce)
12 Without function
Frequ. correction UP
(increase ref. value)
13 Selection setup 1 (lsb)
14 Selection setup 2 (msb)
15 Without function
Reversion
If ”Profidrive” has been selected, then a two-
part start command has to be observed when
the start is released (turn-on lock-out: bit 0).
For this it is necessary to first predetermine
Hex 047E and then Hex 047F in the control word,
for example.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit no.
0 4 7 E (Hex)
0 4 7 F (Hex)
Bit 00, OFF 1/ON 1
Normal ramp stop using the ramp times of the
parameters 207/208 or 209/210.
Bit 00 = “0” leads to the stop and activation of the
output relay 01 or 04 if the output frequency is
0 Hz if
Relay 123
has been selected in parameter
323 or 326.
In the case of bit 00 = “1”, the frequency converter
can start if the other start conditions are satisfied.
Bit 01, OFF 2/ON 2
Coasting stop
In the case of bit 01 = “0”, a coasting stop and
activation of the output relay 01 or 04 occurs if the
output frequency is 0 Hz if
Relay 123
has been
selected in parameter 323 or 326.
In the case of bit 01 = “1”, the frequency converter
can start if the other start conditions are satisfied.
Bit 02, OFF 3/ON 3
Quick stop using the ramp time of parameter 212.
In the case of bit 02 = “0”, a quick stop and acti-
vation of the output relay 01 or 04 occurs if the
output frequency is 0 Hz if
Relay 123
has been
selected in parameter 323 or 326.
In the case of bit 02 = “1”, the frequency converter
can start if the other start conditions are satisfied.
Bit 03, Coasting/No coasting
Coasting stop
Bit 03 = “0” leads to a stop.
In the case of bit 03 = “1”, the frequency converter
can start if the other start conditions are satisfied.
Note: The selection in parameter 502 determines
how bit 03 is linked with the corresponding func-
tion of the digital inputs.
Bit 04, Quick stop/Ramp
Quick stop using the ramp time of parameter 212.
In the case of bit 04 = “0”, a quick stop occurs.
In the case of bit 04 = “1”, the frequency converter
can start if the other start conditions are satisfied.
Note: The selection in parameter 503 determines
how bit 04 is linked with the corresponding func-
tion of the digital inputs.
Control
word
Bus
reference
Control
word
Bus
reference
Control word / Status word
