NB!
For an example of advanced mechanical brake control for hoisting applications, see section
Application Examples
3.9.3 Brake Resistor Cabling
EMC (twisted cables/shielding)
To reduce the electrical noise from the wires between the brake resistor and the frequency converter, the wires must be twisted.
For enhanced EMC performance a metal screen can be used.
3.10 Logic Controller - AF-650 GP
The Logic Controller (LC) is essentially a sequence of user defined actions (see par. LC-52
Logic Controller Action
) executed by the LC when the associated user
defined
event
(see par. LC-51
Logic Controller Event
) is evaluated as TRUE by the LC.
Events
and
actions
are each numbered and are linked in pairs called states. This means that when
event [1]
is fulfilled (attains the value TRUE),
action [1]
is executed.
After this, the conditions of
event [2]
will be evaluated and if evaluated TRUE,
action [2]
will be executed and so on. Events and actions are placed in array parameters.
Only one
event
will be evaluated at any time. If an
event
is evaluated as FALSE, nothing happens (in the LC) during the present scan interval and no other
events
will be evaluated. This means that when the LC starts, it evaluates
event [1]
(and only
event [1]
) each scan interval. Only when
event [1]
is evaluated TRUE, the LC
executes
action [1]
and starts evaluating
event [2]
.
It is possible to program from 0 to 20
events
and
actions
. When the last
event /
action
has been executed, the sequence starts over again from
event [1] /
action [1]
. The illustration shows an example with three
events / actions
:
AF-650 GP Design Guide
45
3
Summary of Contents for AF-650 GP Series
Page 5: ...AF 650 GP Design Guide 4 1...
Page 53: ...AF 650 GP Design Guide 52 4...
Page 97: ...Please note airflow directions 6 1 5 Mechanical Dimensions AF 650 GP Design Guide 96 6...
Page 98: ...Please note airflow directions AF 650 GP Design Guide 97 6...
Page 99: ...Please note airflow directions AF 650 GP Design Guide 98 6...
Page 100: ...Please note airflow directions AF 650 GP Design Guide 99 6...
Page 173: ...Max cable length 150 m AF 650 GP Design Guide 172 9...
Page 179: ...AF 650 GP Design Guide 178 9...