5-4
5-2 Internally Set Speed Control
5
Operating Functions
5-2 Internally Set Speed Control
The speed of the Servomotor can be controlled using the speeds set in the No. 1 to 4 Internal
Speed Setting parameters.
After the RUN Command Input (RUN) is turned ON and then the Zero Speed Designation Input
(VZERO) is turned ON, the Servomotor will accelerate according to the Soft Start Acceleration
Time (Pn58). When the Zero Speed Designation Input (VZERO) is turned OFF, the Servomotor
will decelerate to a stop according to the Soft Start Deceleration Time (Pn59).
Switching between the internally set speeds is controlled by the Internally Set Speed Selection 1
and 2 Inputs (VSEL1: CN1-6, VSEL2: CN1-4).
Parameters Requiring Settings
Related Parameters
The main functions provided by the parameters related to Internally Set Speed Control are
described in the following table.
Parameter
No.
Parameter name
Explanation
Reference
Pn02
Control Mode
Selection
Select the control mode for internally set speeds (setting: 1).
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Pn06
Zero-speed
Designation/
Torque Limit
Switch
Always enable the zero-speed designation when internally set
speeds are used (setting: 1).
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Pn53
No. 1 Internal
Speed Setting
Set the internally set speeds (r/min). The settings can be made
from
−
20,000 to 20,000 r/min. Be sure to set the speeds within
the allowable range of rotation speed of the Servomotor.
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Pn54
No. 2 Internal
Speed Setting
Pn55
No. 3 Internal
Speed Setting
Pn56
No. 4 Internal
Speed Setting
Pn58
Soft Start
Acceleration Time
Set the acceleration time for Internally Set Speed Control. Set
the time (setting
×
2 ms) until 1,000 r/min is reached.
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Pn59
Soft Start
Deceleration Time
Set the deceleration time for Internally Set Speed Control. Set
the time (setting
×
2 ms) until operation stops from 1,000 r/min.
Function
Explanation
Reference
Torque Limit Switch
The Torque Limit Switch Input (TLSEL) is used when the Zero Speed Desig-
nation/Torque Limit Switch (Pn06) is set to 2. The following parameters are
switched: Overspeed Detection Level, Torque Limit, and Deviation Counter
Overflow Level.
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Zero Speed
Detection
The Zero Speed Detection Signal will be output if the speed of the Servomotor
falls below the setting of this parameter. The Warning Output Selection
(Pn09) must be set to 1 to use this function.
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Motor Rotation
Detection
The Servomotor Rotation Speed Detection Output (TGON) will be output if
the speed of the Servomotor exceeds the setting of this parameter.
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