Chapter 4 - SETTING-UP AND COMMISSIONING
4-18
584S Frequency Inverter
MOP PRESET command. The
DIGITAL MOP
setpoint is not saved by the parameter save operation. Parameters
accessed via the
DIGITAL
MOP
menu are as follows:
MAX MOP SPEED
This is the target
DIGITAL MOP
speed setpoint while RAISE is active.
Range :
-LIMIT FREQUENCY
to
+LIMIT FREQUENCY
Default :+
LIMIT FREQUENCY
MIN MOP SPEED
This is the target
DIGITAL MOP
speed setpoint while LOWER is active.
Range :
-LIMIT FREQUENCY
to
+LIMIT FREQUENCY
Default :-
LIMIT FREQUENCY
MOP PRESET SPEED
This is the
DIGITAL MOP
preset speed setpoint.
Range
:
-LIMIT FREQUENCY
to
+LIMIT FREQUENCY
Default :
0
INCREASE RATE
This is the time taken to ramp from 0 to
+LIMIT FREQUENCY
or from 0 to
-LIMIT FREQUENCY
.
Range :
0.1 to 3000.0s
Default :10.0s
DECREASE RATE
This is the time taken to ramp from
+LIMIT FREQUENCY
to 0 or from
-LIMIT FREQUENCY
to 0.
Range :
0.1 to 3000.0s
Default :10.0s
NOTE: The
DIGITAL MOP
will fail to operate when
S RAMP
has been selected. This is because unlike linear or
parabolic ramps, s-ramps cannot be instantly stopped without destroying the s characteristic.
Preset Speeds
There are two banks of 4 preset speeds available to the user. All 8 presets can be selected locally using the
MANUAL
SETPOINT
select parameter.
The first bank of 4 presets can be selected remotely using the two digital inputs, terminals 25 and 26, when the
RECONFIG I/Ps
parameter in the System menu (see "
SYSTEM
") is set to 4 PRESETS & JOG.
The second bank of 4 presets is only active when the
RECONFIG I/Ps
parameter in the "
SYSTEM
" menu is set to
8 PRESETS. Once the values have been programmed, this second bank of presets can be selected remotely via the
two digital inputs, terminals 25 and 26, while the terminal 24, is held at +24V (terminal 18). The first bank of
presets (preset speeds 1 to 4) can still be selected remotely using terminals 25 and 26, while terminal 24 is held at 0V
(terminal 19).
Skip Frequencies
Four programmable skip frequencies are available to avoid resonances within the mechanical system. Enter the value
of drive frequency that causes the resonance using the
SKP
FRQ
parameter and then programme the width of the skip
band using the
SKP FRQ
BAND
parameter. The drive will then avoid sustained operation within the forbidden band
as shown in the diagram.
DRIVE
FREQUENCY
SETPOINT
SKIP FREQ
SKIP BAND
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Summary of Contents for 584S
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