Speed limitation
The torque control controls the assigned torque setpoint within the set speed limits. The actual speed results from the load conditions of the application. For example, high speeds may occur in a torque control if no counter torque is available (load-free machine).
When the actual speed reaches the set speed limits, it is kept on the respective limit value. This function is also called "speed limitation".
Details
The lower and upper speed limit for speed limitation can be set independently of each other. They can also be defined via analog inputs or network.
Required parameter setting:
1.
Select the source for the upper speed limit in 0x2946:003 (P340.03).
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Default setting: Maximum frequency-[0] 0x2916 (P211.00)
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In case of selection "Analog input 1 [2]": Set the setting range in 0x2636:002 (P430.02) and 0x2636:003 (P430.03).
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In case of selection "Analog input 2 [3]": Set the setting range in 0x2637:002 (P431.02) and 0x2637:003 (P431.03).
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In case of selection "Upper frequency limit [4]": Set the upper speed limit in [Hz] in 0x2946:005 (P340.05).
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In case of selection "Upper speed limit [5]": Set the upper speed limit in [vel. unit] in 0x2946:001 (P340.01).
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The current upper speed limit is displayed in 0x2946:007 (P340.07).
2.
Select the source for the lower speed limit in 0x2946:004 (P340.04).
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Default setting: (-) Maximum frequency-[0] 0x2916 (P211.00)
–
In case of selection "Analog input 1 [2]": Set the setting range in 0x2636:002 (P430.02) and 0x2636:003 (P430.03).
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In case of selection "Analog input 2 [3]": Set the setting range in 0x2637:002 (P431.02) and 0x2637:003 (P431.03).
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In case of selection "Lower frequency limit [4]": Set the lower speed limit in [Hz] in 0x2946:006 (P340.06).
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In case of selection "Lower speed limit [5]": Set the lower speed limit in [vel. unit] in 0x2946:002 (P340.02).
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The output frequency is absolutely limited regardless of the setting 0x2946:003 (P340.03) and 0x2946:004 (P340.04) by 0x2916 (P211.00) in the “Torque mode”.
–
The current lower speed limit is displayed in 0x2946:008 (P340.08).
Parameter
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Address
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Name / setting range / [default setting]
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Information
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0x2946:001
(P340.01)
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Speed limitation: Upper speed limit
(Speed limitation: Upper limit)
-2147483647 ... [0] ... 2147483647 vel. unit
–
From version 03.00
|
Upper limit for the speed limitation.
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Setting is only effective with the selection "Upper speed limit [5]" in 0x2946:003 (P340.03).
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Entry via keypad and Lenze Tools is in rpm!
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Via RPDO, the unit is vel. unit. and the scaling must be taken into account.
–
± 480000 rpm = ± 2 ^ 31 [n-unit] |
|
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0x2946:002
(P340.02)
|
Speed limitation: Lower speed limit
(Speed limitation: Lower limit)
-2147483647 ... [0] ... 2147483647 vel. unit
–
From version 03.00
|
Lower limit for speed limitation.
–
Setting is only effective with the selection "Lower speed limit [5]" in 0x2946:004 (P340.04).
–
Entry via keypad and Lenze Tools is in rpm!
–
Via RPDO, the unit is vel. unit. and the scaling must be taken into account.
–
± 480000 rpm = ± 2 ^ 31 [n-unit] |
|
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0x2946:003
(P340.03)
|
Speed limitation: Upper speed limit source
(Speed limitation: Uppspeed lim src)
–
From version 03.00
|
Selection of the source for the upper speed limit.
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|
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0
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Maximum frequency
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Upper speed limit = Maximum frequency 0x2916 (P211.00).
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|
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1
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Fixed Limit 0.0 Hz
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Upper speed limit = 0.0 Hz.
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|
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2
|
Analog input 1
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The upper speed limit is defined as analog signal via the analog input 1.
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|
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3
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Analog input 2
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The upper speed limit is defined as analog signal via the analog input 2.
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|
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4
|
Upper frequency limit
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Upper speed limit = setting in 0x2946:005 (P340.05) in [Hz].
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|
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5
|
Upper speed limit
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Upper speed limit = setting in 0x2946:001 (P340.01) in [vel. unit].
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6
|
Network target velocity
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The upper speed limit is defined as process data object via network.
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|
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201
|
Internal value
|
Internal values of the manufacturer.
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|
|
202
|
Internal value
|
||
|
203
|
Internal value
|
||
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204
|
Internal value
|
||
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205
|
Internal value
|
||
|
206
|
Internal value
|
||
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0x2946:004
(P340.04)
|
Speed limitation: Lower speed limit source
(Speed limitation: Lowspeed lim src)
–
From version 03.00
|
Selection of the source for the lower speed limit.
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|
|
0
|
(-) Maximum frequency
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Lower speed limit = (-) Maximum frequency 0x2916 (P211.00).
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|
|
1
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Fixed Limit 0.0 Hz
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Lower speed limit = 0.0 Hz.
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|
|
2
|
Analog input 1
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The lower speed limit is defined as analog signal via the analog input 1.
|
|
|
3
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Analog input 2
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The lower speed limit is defined as analog signal via the analog input 2.
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|
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4
|
Lower frequency limit
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Lower speed limit = setting in 0x2946:006 (P340.06) in [Hz].
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|
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5
|
Lower speed limit
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Lower speed limit = setting in 0x2946:002 (P340.02) in [vel. unit].
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|
|
6
|
Network target velocity
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The lower speed limit is defined as process data object via network.
|
|
|
201
|
Internal value
|
Internal values of the manufacturer.
|
|
|
202
|
Internal value
|
||
|
203
|
Internal value
|
||
|
204
|
Internal value
|
||
|
205
|
Internal value
|
||
|
206
|
Internal value
|
||
|
0x2946:005
(P340.05)
|
Speed limitation: Upper frequency limit
(Speed limitation: Upper freq.limit)
Device for 50-Hz mains: -1000.0 ... [50.0] ... 1000.0 Hz
Device for 60-Hz mains: -1000.0 ... [60.0] ... 1000.0 Hz
–
From version 03.00
|
Upper limit for the speed limitation.
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|
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0x2946:006
(P340.06)
|
Speed limitation: Lower frequency limit
(Speed limitation: Lower freq.limit)
Device for 50-Hz mains: -1000.0 ... [-50.0] ... 1000.0 Hz
Device for 60-Hz mains: -1000.0 ... [-60.0] ... 1000.0 Hz
–
From version 03.00
|
Lower limit for speed limitation.
|
|
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0x2946:007
(P340.07)
|
Speed limitation: Actual upper speed limit
(Speed limitation: Act uppspeed lim)
–
Read only: x.x Hz
–
From version 03.00
|
Display of the current upper limit for speed limitation.
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|
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0x2946:008
(P340.08)
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Speed limitation: Actual lower speed limit
(Speed limitation: Act lowspeed lim)
–
Read only: x.x Hz
–
From version 03.00
|
Display of the current lower limit for speed limitation.
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Analog input 1