The Stop Control Command
The
Stop control command causes the inverter to ramp to rest. If the process ramp is transmitted
via the fieldbus system, this control command will use the specified ramp value as value for the
deceleration ramp. If not, the inverter will use the typical ramp generators
Ramp Down for this control
command, depending on the selected parameter and ramp generator sets (Fig. 15).
Use
Bit 2: Enable/Stop to initiate the Stop control command. Of all three control commands available
for stopping the drive, the
Stop control command has the lowest priority.
Activating the Hold Control (not for MOVITRAC
®
31.., size 0)
Set bit 3 = 1 of the control word to activate the
Hold Control function when the inverter is in speed
control mode. This function causes the inverter to carry out a stop using the active ramp and then
hold the position under hold control. When the inverter is in V/f control mode, this bit is reserved, as
the function cannot be activated. Therefore, when the V/f control mode, set this bit to 0.
Selecting the Effective Parameters Set (not for MOVITRAC
®
31.., size 0)
Use bit 4 of the control word to select the effective ramp generators. The following table shows the
ramp generators, which can be selected with this control bit.
Par. set
Ramp gen. set
Valid ramp generator
1
1
P120
T11 Ramp up
P121
T11 Ramp down
P140
T13 Ramp stop
2
P130
T12 Ramp up = down
P140
T13 Ramp stop
2
1
P123
T21 Ramp up
P124
T21 Ramp down
P141
T23 Ramp stop
2
P131
T22 Ramp up = down
P141
T23 Ramp stop
*)
Parameter set 2 not available for MOVITRAC
®
31.., size 0
This bit is OR’d with the input terminal function
Ramp Generator Selection, i.e. a logic “1” on the
input terminal OR in the control word bit will activate ramp generator set 2!
Selecting the Effective Parameter Set (not for MOVITRAC
®
31.., size 0)
Use bit 5 of the control word to select the effective parameter set. Before, enable the parameter set
selection in parameter in
P350 Enable Parameter Selection = YES. It is not possible to change
parameters sets while the drive is running. Selection of a different parameter set is only possible
when the drive is in the
No Enable or Controller Inhibit condition.
2
1
2
1
2
1
P131 T22 Ramp up = down*
)
Active
ramp generator set
Active
parameter set
Process
ramp via fieldbus
No
Yes
Fieldbus process ramp
MOVITRAC
setpoint processing
*) Not for MOVITRAC 31.., size 0
®
P130 T12 Ramp up = down*
)
P124 T21 Ramp down
P121 T11 Ramp down
00325AEN
Fig. 15: Overview of the deceleration ramp options for the Stop control command
Inverter Control
with Process Data
3
28
MOVITRAC
®
31.. Fieldbus Unit Profile
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
