Danfoss MCO 305, Design Manual, Page: 172 / 242

MCO 305 Design Guide
__ Software Reference __
172
MG.33.L4.02 – VLT
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is a registered Danfoss trademark
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VLTCONTROL
Summary Sets the VLT control word in MOTOR OFF state
Syntax VLTCONTROL control word value
Parameter value
Description VLTCONTROL allows setting the VLT control word while the system is in MOTOR OFF
state. This command can be used to set the control word to every value. The user
is responsible for the correct values (specially the bit DATA VALID).
The commands behave as follows. When using VLTCONTROL the first time, it will be
changed into User-Control mode. In this mode the control word is not influenced at
all. The user is responsible for the control word. As long as the system is in that
mode, OUTAN only influences reference, but not control word. It can be only
returned to normal mode by using a MOTOR ON command, or by starting a new
APOSS program.
Command Group CON
Cross Index MOTOR OFF, MOTOR ON, OUTAN
Syntax Example MOTOR OFF
…
VLTCONTROL 0x047C // activates drive
OUTAN 0x1000
…
MOTOR ON // disables user control of control word
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VLTERRCLR
Summary Clears a VLT-alarm
Syntax VLTERRCLR
Description The command VLTERRCLR clears a VLT-alarm without doing anything with an
existing option error. This command can be used everywhere in an Aposs program.
Command Group CON
Cross Index VLTALARMSTAT
Syntax Example If (VLTALARMSTAT) then
Print " alarm active ", VLTALARMSTAT
VLTERRCLR
Endif