Danfoss VLT DMS 300 Manual page 155

Bit Bit = 0
00
01
02 DC braking
03 Coasting stop
04 Quick stop
05 Freeze outp. freq.
06 Ramp stop
07
08
09 Ramp 1
10 Data not valid
11 No function
12 No function
13 Select Setup, lsb
14 Select Setup, msb
15
Bit 00/01:
Bit 00/01 is used to select between the two
pre-programmed references (parameters 215-218
Preset reference) according to the following table:
Preset ref. Parameter
1 215
2 216
3 217
4 218
NOTE
In parameter 508 Selection of preset
reference a selection is made to define how
Bit 00/01 gates with the corresponding
function on the digital inputs.
Bit 02, DC brake:
Bit 02 = '0' causes DC braking and stop. Brake
voltage and duration are preset in parameters
132 DC brake voltage and parameter 126 DC
braking time. Note: In parameter 504 DC brake a
selection is made to define how Bit 02 gates with the
corresponding function on a digital input.
Bit 03, Coasting stop:
Bit 03 = '0' causes the variable frequency drive to
immediately "let go" of the motor (the output transistors
are "shut off"), so that it coasts to a standstill.
Bit 03 = '1' causes the variable frequency drive to be
able start the motor if the other starting conditions have
been fulfilled. Note: In parameter 502 Coasting stop
MG.90.F2.22 - VLT is a registered Danfoss trademark
Bit =1
Preset ref. lsb
Preset ref. msb
Start
Reset
Jog
Ramp 2
Data valid
Digital output
Relay output
Reverse
Bit 01 Bit 00
0 0
0 1
1 0
1 1
Decentral Solutions
a selection is made to define how Bit 03 gates with
the corresponding function on a digital input.
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.
Bit 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 Slow down.
NOTE
If Freeze output is active, the variable frequency
drive cannot be stopped via Bit 06 Start or via
a digital input. The variable frequency drive
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.
Bit 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 variable frequency drive 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.
Bit 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'.
Bit 08, Jog:
Bit 08 = '1' causes the output frequency to be
determined by parameter 213 Jog frequency.
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