Lenze 9400 - Manual (Page 492)

11 Basic drive functions
11.9 Speed follower
492
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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11.9 Speed follower
This basic function is used as setpoint interface for speed-controlled drives.
• The motor control is switched over automatically to speed control with torque limitation.
• If the direction of rotation of the motor has to be inverted due to the mounting position of the
motor or the gearbox ratio available, the use of the control signals can be accordingly changed
over by means of parameterisation.
11.9.1 Internal interfaces | "LS_SpeedFollower" system block
The LS_SpeedFollower system block provides the internal interfaces for the basic function "Speed
follower" in the function block editor.
Inputs

Note!
When the basic function is activated, a start acceleration is considered.  Start
acceleration/acceleration reduction when the basic function changes ( 380)

Note!
Ensure that the system block is called in a cyclic application task.
Basically, projects which only contain an unsolicited task and no cyclic task are not
permissible!
Identifier
DIS code | data type
Information/possible settings
SF_bEnable
C02695/1 | BOOL
Requesting control via the basic function
TRUE If no other basic function is active, a change-over to the "Speed
follower active" function state is carried out, and the setpoints
defined are accepted.
TRUEFALSE If no other basic function takes over the control of the drive, the drive
is brought to standstill, i. e. a change-over from the active function
state "Speed follower active" via the "Drive is stopped" function state
back to the basic state "Drive at standstill" is carried out.
SF_dnSpeedSet_n
C02694/1 | DINT
Speed setpoint in [%]
• 100 % ≡ Motor reference speed ( C00011 )
SF_dnSpeedAdd_s
C02693 | DINT
Additive speed setpoint in [rpm]
• Without position control function.
LS_SpeedFollower
SF_bEnable
SF_dnSpeedSet_n
SF_dnSpeedAdd_s
SF_dnTorqueAdd_n
SF_bEnabled
M
Speed
setpoint
SF_dnAccAdd_x