Operating Instructions – MOVITRAC® B
97
5
Communication and unit profile
Startup
Control command
"stop"
The control command
stop
causes the frequency inverter to bring the motor to a stop. If
the process ramp is transmitted via the fieldbus system, this control command will use
the currently indicated ramp value as brake ramp. Else, the frequency inverter uses the
typical integrator ramp for this control command depending on the set parameters and
integrator set.
The
stop
control command is triggered with
bit 2: enable/stop
.
Control command
"enable"
You enable the inverter via fieldbus system using the control command
enable
. If the
process ramp is transmitted via the fieldbus system, this control command will use the
currently indicated ramp value as brake ramp. Else, the frequency inverter uses the typ-
ical integrator
ramp up
for this control command depending on the set parameters and
the ramp generator set.
All three bits must be set to
enable
(110
bin
) for the control command
enable
.
Selecting the valid
parameter set
The applicable parameter set is selected using bit 5 in the control word. A parameter set
can only be changed in
controller inhibit
condition.
This bit is ORed with the input terminal function
parameter set changeover
. This means
the logical state "1" of the input terminal OR the control word bit activates parameter set
2.
Reset after a fault
In case of a fault, bit 6 of the control word will execute a reset via the process data chan-
nel. A reset can only be triggered with a 0/1 edge in the control word.
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Summary of Contents for Movitrac B
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