Danfoss FCM 300 Operating Instructions Manual page 33

PROFIBUS specific parameters
800 Protocol select
(PROTOCOL SELECT)
Value:
PROFIBUS DP V1
Function:
Selection of the PROFIBUS protocol supported
by the master.
Description of choice:
DP: Communication according to EN 50170, part 3
NB!:
In the event of an update of parameter 800, even
with an unchanged data value, the PROFIBUS
option is initialized, which means that all
communication parameters 801, 802, ..., e.g. slave
address, baud rate, PPO type etc., are being updated.
803 Bus time out
(BUS TIME OUT)
Value:
1 - 99 sec.
804 Bus time out function
(TIME OUT FUNCT.)
Value:
Off (OFF)
Freeze output frequency (FREEZE OUTPUT)
Stop with auto restart (STOP)
Output frequency = JOG freq. (JOGGING)
Output freq. = Max. freq. (MAX SPEED)
Stop with trip (STOP AND TRIP)
No comm. option control
(NO COMM OPT CONTROL)
Select setup 4 (SELECT SET UP 4)
Select setup 2
Function:
The time out counter is triggered at the first reception of
a valid control word i.e. bit 10 = ok, when DP is used.
The time out function can be activated in
two different ways:
1. CTW is not updated within the time specified
in parameter 803.
2. Time out is triggered if the CTW is not
valid, see parameter 805.
The FCM 300/FCD 300/VLT 2800 remains in time out
state until one of the following conditions is true:
1. Valid control word (Bit 10 = ok) is received. If Stop
with trip is selected, reset must also be activated. If
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FCM 300 / FCD 300 / VLT
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2800 / DP V1 PROFIBUS
Select setup 2 is selected, the FCM 300/FCD 300 / VLT
2800 will remain in Setup 2 until parameter 4 is changed.
2. Parameter 804 = Off Þ control via PROFIBUS is
resumed and the most recent control word is used.
Description of choice:
- Freeze output frequency: Freeze output frequency
until communication is resumed.
- Stop with auto restart: Stop with auto restart
when communication is resumed.
- Output frequency = JOG freq.: Motor will run at
JOG frequency until communication is resumed.
- Output frequency = Max. freq.: Motor will run at
max. frequency until communication is resumed.
- Stop with trip: Motor is stopped, reset needed
for restart, see explanation above.
- No communication option control: enable the
process control via the serial port or digital input.
- Select setup 4
- Select setup 2.
805 Function of control word bit 10
(BIT 10 FUNCTION)
Value:
No function (NO FUNCTION)
Bit 10 = 1 CTW active
(BIT 10 = 1 CTW ACTIVE)
Bit 10 = 0 CTW active
(BIT 10 = 0 CTW ACTIVE)
Bit 10 = 0 time out (BIT 10 = 0
Function:
Control word and speed reference will be ignored if
bit 10 of the control word is 0, but parameter 805
lets the user change the function of bit 10. This is
some times necessary as some masters are setting
all bits to 0 in various fault situations. In these cases
it makes sense to change the function of bit 10 so
that the FCM 300/FCD 300/VLT 2800 is commanded
to stop (coast) when all bits are 0.
Description of choice:
- Bit 10 = 1 CTW acti v e: Control word and
speed reference is ignored if bit 10 = 0.
- Bit 10 = 0 CTW acti v e: Control word and
speed reference is ignored if bit 10 = 1. If all bits
of the control word are 0 the FCM 300/FCD 300/
VLT 2800 reaction will be coasting.
- Bit 10 = 0 time out: The time out function selected
in parameter 804 is activated when bit 10 is 0.
- No function: Bit 10 is ignored, i.e. control word
and speed reference is always valid.
MG.90.A5.02 - VLT is a registered Danfoss trademark
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