Siemens SINUMERIK 808D ADVANCED Parameter Manual

With spindles, this MD refers to the lower of the speeds set in
MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT of the current gear stage and MD35100
$MA_SPIND_VELO_LIMIT.
36600 BRAKE_MODE_CHOICE EXP, A05 A3, Z1
- Deceleration response on hardware limit switch BYTE PowerOn
CTEQ
- - 0 0 1 2/2
Description: If a rising edge of the axis-specific hardware limit switch is detected while the axis
is traversing, the axis is braked immediately.
The type of braking is determined by this machine data:
Value = 0:
Controlled braking along the acceleration ramp defined by MD32300 $MA_MAX_AX_ACCEL
(axis acceleration).
Value = 1:
Rapid braking (selection of setpoint = 0) with reduction of following error.
Related to:
NC/PLC interface signal DB380x DBX1000.1 und .0 (Hardware limit switch plus or minus)
36610 AX_EMERGENCY_STOP_TIME A05 TE3, K3, A2, A3, N2, Z1
s Maximum time for braking ramp in case of error. DOUBLE NEW CONF
-
- - 0.05 0.0 1.0e15 2/2
Description: This MD defines the braking ramp time that an axis or spindle requires to brake from
maximum velocity/speed to a standstill in the event of errors (e.g. emergency stop).
At the same lead/brake acceleration, standstill is reached correspondingly earlier
from lower velocities/speeds.
Mechanically robust axes are normally stopped abruptly with speed setpoint 0; values
in the lower ms range are appropriate in these cases (default setting).
However, high moving masses or limited mechanical conditions (e.g. gear load capacity)
often have to be taken into account for spindles. This means that the MD has to be
changed to set a longer braking ramp.
Notice:
● With interpolating axes or axis/spindle couplings, it cannot be ensured that the
contour or coupling will be maintained during the braking phase.
● If the time set for the braking ramp for error states is too long, the controller
enable
will be
removed although the axis/spindle is still moving. Depending on the
drive type used and the activation of the pulse enable, either an immediate stop
with speed setpoint 0 will be initiated or the axis/spindle will coast down without
power. The time selected in MD36610 $MA_AX_EMERGENCY_STOP_TIME should therefore be
shorter than the time in MD36620 $MA_SERVO_DISABLE_DELAY_TIME (cutout delay,
controller enable) so that the configured braking ramp can be fully active
throughout the entire braking operation.
● The braking ramp may be ineffective or not maintained if the active drive follows
its own braking ramp logic (e.g. SINAMICS).
Related to:
MD36620 $MA_SERVO_DISABLE_DELAY_TIME (cutout delay controller enable)
MD36210 $MA_CTRLOUT_LIMIT (maximum speed setpoint)
36620 SERVO_DISABLE_DELAY_TIME A05 TE3, K3, A2, A3, N2, Z1
s Cutout delay servo enable DOUBLE NEW CONF
-
- - 0.1 0.0 1.0e15 2/2
Machine data
3.4 Axis-specific machine data
Parameter Manual
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1 291

Siemens SINUMERIK 808D ADVANCED Specifications

General

Brand	Siemens
Model	SINUMERIK 808D ADVANCED
Category	Control Unit
Language	English