Operating instructions

VLT
®
2800, VLT
®
6000 HVAC and VLT
®
8000 AQUA Modbus RTU
Parameter
Handling
Bit 04, Quick stop:
Bit 04 = ’0’ causes a stop, in which the motor’s
speed is ramped down to stop via parameter
212 Quick stop ramp-down time.
B
it 05, Freeze output frequency:
Bit 05 = ’0’ causes the present output frequency
(in Hz) to freeze. The frozen output frequency can
now only be changed by means of the digital inputs
programmed to Speed up and Speed down.
NB!:
If Freeze output is active, the frequency
converter cannot be stopped via Bit 06 Start
or via a digital input. The frequency converter
can only be stopped by the following:
• Bit 03 Coasting stop
• Bit 02 DC braking
• Digital input programmed to DC braking, Coasting
stop or Reset and coasting stop.
B
it 06, Ramp stop/start:
Bit 06 = ’0’ causes a stop, in which the motor’s
speed is ramped down to stop via the selected
ramp down parameter.
Bit 06 = ’1’ causes the frequency converter to be able
to start the motor, if the other starting conditions have
been fulfilled. Note: In parameter 505 Start a selection
is made to define how Bit 06 Ramp stop/start gates
with the corresponding function on a digital input.
B
it 07, Reset:
Bit 07 = ’0’ does not cause a reset.
Bit 07 = ’1’ causes the reset of a trip. Reset is
activated on the signal’s leading edge, i.e. when
changing from logic ’0’ to logic ’1’.
B
it 08, Jog:
Bit 08 = ’1’ causes the output frequency to be
determined by parameter 213 Jog frequency.
B
it 09, Selection of ramp 1/2:
Bit 09 = "0" means that ramp 1 is active (parameters
207/208). Bit 09 = "1" means that ramp 2
(parameters 209/210) is active.
B
it 10, Data not valid/Data valid:
Is used to tell the frequency converter whether the
control word is to be used or ignored. Bit 10 = ’0’
causes the control word to be ignored, Bit 10 = ’1’
causes the control word to be used. This function
is relevant, because the control word is always
contained in the telegram, regardless of which type
of telegram is used, i.e. it is possible to turn off the
control word if you do not wish to use it in connection
with updating or reading parameters.
B
it 11, Relay 01:
Bit 11 = "0" Relay not activated.
Bit 11 = "1" Relay 01 activated, provided Control
word bit has been chosen in parameter 323.
B
it 12, Digital output, terminal 46:
Bit 12 = "0" Digital output has not been activated.
Bit 12 = "1" Digital output has been activated, provided
Control word bit has been chosen in parameter 341.
B
it 13/14, Selection of Setup:
Bits 13 and 14 are used to choose from the four menu
Setups according to the following table:
Setup Bit 14 Bit 13
100
201
310
411
The function is only possible when Multi-Setups is
selected in parameter 004 Active Setup .
Note: I parameter 507 Selection of Setup a selection
is made to define how Bit 13/14 gates with the
corresponding function on the digital inputs.
B
it 15 Reversing:
Bit 15 = ’0’ causes no reversing.
Bit 15 = ’1’ causes reversing.
Note: In the factory setting reversing is set to
digital in parameter 506 Reversing. Bit 15 only
causes reversing when either Ser. communication,
Logic or or Logic and is selected.
■ Status Word Bit Description for VLT 2800
The status word is used to inform the master
(e.g. a PC) of the slave’s (frequency converter)
mode. Slav
e⇒Master.
MG.10.S2.02 - VLT is a registered Danfoss trademark
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