Danfoss VLT 5000 Series Design Guide

Bit 00/01:
Bit 00/01 is used to select between the two pre-pro-
grammed references (parameters 215-218 Preset ref-
erence) according to the following table:
Preset ref. Parameter Bit 01 Bit 00
1 215 0 0
2 216 0 1
3 217 1 0
4 218 1 1
NB!
In parameter 508 Selection of preset ref-
erence 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' leads to DC braking and stop. Braking cur-
rent and duration are set in parameters 125 and 126.
Bit 02 = '1' leads to ramping.
Bit 03, Coasting stop:
Bit 03 = '0' causes the frequency converter to imme-
diately "let go" of the motor (the output transistors are
"shut off"), so that it coasts to a standstill.
Bit 03 = '1' causes the frequency converter to be able
start the motor if the other starting conditions have
been fulfilled. Note: In parameter 502 Coasting stop 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 program-
med 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 fol-
lowing:
• Bit 03 Coasting stop
• Bit 02 DC braking
•
Digital input programmed to DC
braking, Coasting stop or Reset
and coasting stop.
VLT
®
5000 Design Guide
MG.52.B2.02 - VLT
®
is a registered Danfoss trademark 89
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Danfoss VLT 5000 Series Specifications

General

Brand	Danfoss
Model	VLT 5000 Series
Category	DC Drives
Language	English