Motor potentiometer (MOP)
The "Motor potentiometer" function can be used as an alternative setpoint control that is controlled via two functions: "MOP setpoint up" and "MOP setpoint down".
Details
If the motor potentiometer is active as the setpoint source, the setpoint generated by this function ("MOP value") can be changed according to following the truth table via the triggers assigned to the two functions "MOP setpoint up" and "MOP setpoint down":
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MOP setpoint up
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MOP setpoint down
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Response of the function
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FALSE
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FALSE
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The last MOP value is maintained.
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TRUE
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FALSE
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The MOP value is increased to a maximum of the upper limit value for the respective operating mode with the acceleration time 2.
(The motor follows the setpoint change with acceleration time 1.)
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FALSE
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TRUE
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The MOP value is increased to a maximum of the lower limit value for the respective operating mode with the deceleration time 2.
(The motor follows the setpoint change with deceleration time 1.)
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TRUE
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TRUE
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The last MOP value is maintained.
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The start behavior can be selected in 0x4003 (P413.00). In the default setting, the last MOP value is used as the initial value. The last MOP value remains available after switching the mains voltage off and on again. As an alternative, an adjustable initial value or the minimum value can be used for starting.
Parameter
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Address
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Name / setting range / [default setting]
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Information
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0x2631:023
(P400.23)
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Function list: MOP setpoint up
(Function list: MOP up)
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Assignment of a trigger for the "MOP setpoint up" function.
Trigger = TRUE: setpoint generated by the "Motor potentiometer" function ("MOP value") is maximally increased to the upper range limit
with acceleration time 2.
Trigger = FALSE: last MOP value is maintained.
Notes:
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If the "MOP setpoint up" and "MOP setpoint down" functions are active at the same time, the last MOP value is maintained.
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Acceleration time 2 can be set in 0x2919 (P222.00).
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0
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Not connected
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No trigger assigned (trigger is constantly FALSE).
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0x2631:024
(P400.24)
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Function list: MOP setpoint down
(Function list: MOP down)
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Assignment of a trigger for the "MOP setpoint down" function.
Trigger = TRUE: setpoint generated by the "Motor potentiometer" function ("MOP value") is maximally decreased to the lower range limit with
deceleration time 2.
Trigger = FALSE: last MOP value is maintained.
Notes:
–
If the "MOP setpoint up" and "MOP setpoint down" functions are active at the same time, the last MOP value is maintained.
–
Deceleration time 2 can be set in 0x291A (P223.00).
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0
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Not connected
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No trigger assigned (trigger is constantly FALSE).
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0x4003
(P413.00)
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MOP starting mode
(MOP startmode)
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Selection of the initial value which is used after activation of the function.
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0
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Last value
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The last MOP value is used as initial value. It is still provided after the mains voltage has been switched off and on again.
Note: The last MOP value is saved in the internal EEPROM of the inverter. If the memory module is transferred to a compatible device, the last MOP value will therefore not be accepted.
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1
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Starting value
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The starting value of the corresponding operating mode is used as initial value:
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0x4004:001 (P414.01) for the operating mode "MS: Velocity mode"
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0x4004:002 (P414.02) for PID control
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0x4004:003 (P414.03) for the operating mode "MS: Torque mode"
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2
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Minimum value
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The minimum value of the corresponding operating mode is used as initial value:
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0x2915 (P210.00) for the operating mode "MS: Velocity mode"
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0x404E:001 (P605.01) for PID control
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0x4004:001
(P414.01)
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MOP starting values: Frequency
(MOP start value: Frequency)
0.0 ... [0.0] ... 599.0 Hz
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Starting value for operating mode "MS: Velocity mode".
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0x4004:002
(P414.02)
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MOP starting values: PID value
(MOP start value: PID value)
-300.00 ... [0.00] ... 300.00 PID unit
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Starting value for reference value of the PID control.
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0x4004:003
(P414.03)
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MOP starting values: Torque
(MOP start value: Torque)
0.0 ... [0.0] ... 1000.0 %
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Starting value for operating mode "MS: Torque mode".
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This value is used as initial value if "Starting value [1]" is set in 0x4003 (P413.00).
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100 % = motor rated torque (0x6076 (P325.00)).
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0x4009:001
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MOP values saved: Frequency
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Read only: x.x Hz
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Display of the last MOP value saved internally for the operating mode "MS: Velocity mode".
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0x4009:002
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MOP values saved: PID value
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Read only: x.xx PID unit
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Display of the last MOP value saved internally for the reference value of the PID control.
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0x4009:003
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MOP values saved: Torque
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Read only: x.x %
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Display of the last MOP value saved internally for the operating mode "MS: Torque mode".
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This value is used as initial value if "Last value [0]" is set in 0x4003 (P413.00).
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100 % = motor rated torque (0x6076 (P325.00)).
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Trigger listA switch-over to the motor potentiometer during operation is also possible as an alternative to the standard setpoint source setting.
Example: Change-over from AI1 setpoint to MOP setpoint