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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8.11.1 Speed override
Activate override
If control bit 11 (EnableSpeedOverride) has been set to "1" in the MCK control word
, a speed override
is carried out in accordance with the stipulated override value.
If the Motion Control Kernel is downstream from the MCKInterface in the circuit, the
L_MckCtrlInterface
provides the following process input for activating the speed override:
Stipulate override value
The override value is selected via the nSpeedOverride_a input at the SB LS_MotionControlKernel
.
The override value is a percentage of the speed of the current profile.
Deactivate override
If control bit 11 (EnableSpeedOverride) is reset to "0", travelling takes place at the speeds that have
been specified by means of the profile parameters. Acceleration/deceleration from the speed
defined with override to the speed set in the profile takes places immediately in this case.
Deactivating the override within the braking/deceleration ramp does not have any effect.
Designator
Data type
Information/possible settings
bEnableVelOverride
BOOL
Speed override
TRUE Activate speed override
Designator
Data type
Information/possible settings
nSpeedOverride_a
INT
Value for speed override
• Percentage multiplier (0 ... 199.99 %) for the currently active speed.
• 16384 ≡ 100 % of the maximum traversing speed (display in C01211/1
).
• If the override value is 0 %, the drive is brought to a standstill.
Note!
If the value of a speed override is greater than the speed limitation value C0909/x in the
motor control, a following error is generated. C0909/x
should always be parameterised
greater than or equalling the max. possible speed override value.
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