Lenze 8400 User Manual

8 Basic drive functions (MCK)
8.11 Override
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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8.11.3 S-ramp smoothing override
Activate override
If control bit 13 (EnableSRampOverride) in the MCK control word
is set to "1", S-ramp smoothing
override is executed according to the selected override value.
If the Motion Control Kernel is downstream from the MCKInterface in the circuit, the
L_MckCtrlInterface
FB provides the following process input for activating the S-ramp smoothing
override:
Stipulate override value
Optional stipulation of the override value is carried out via the nSRampOverride_a input at
the LS_MotionControlKernel
SB. The override value is a percentage of the S-ramp time set in the
profile data.
 Tip!
Thus it is possible to start a travel profile with S-ramp time and then deactivate the S-
ramp time, e.g. to traverse with a linear characteristic after reaching the profile speed.
Deactivate override
If control bit 13 (EnableSRampOverride) is reset to "0", the S-ramp time specified by means of the
profile parameters is used for profile generation.
Designator
Data type
Information/possible settings
bEnableSRampOverride
BOOL
S-ramp smoothing override
TRUE Activate S-ramp smoothing override
 Note!
If the nSRampOverride_a input remains unconnected or if an override value of "0 %" is
selected, activation of the S-ramp override causes deactivation of the S-ramp time.
• Deactivation of the S-ramp time before the start of a profile with S-ramp time causes
linear ramp generation.
• Deactivation of the S-ramp time during a traversing process, however, is not accepted
immediately in the profile generator, but the profile generator checks automatically
when an online change of the ramp form can be carried out and then initiates it
automatically.
Designator
Data type
Information/possible settings
nSRampOverride_a
INT
Value for S-ramp smoothing override
• Percentage multiplier (0 ... 100 %) for the currently active acceleration.
• 16384 ≡ 100 % of the parameterised S-ramp time (C01306/1...15
).
• Values > 16384 are ignored.

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V