Siemens SINUMERIK 840D sl Function Manual

Detailed description
2.1 Axis monitoring
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
11
MD36020 $MA_POSITIONING_TIME (delay time exact stop fine)
After reaching "Exact stop fine", the position monitoring is deactivated.
Note
The smaller the exact stop fine tolerance is, the longer the positioning operation takes and
the longer the time until block change.
Rules for MD setting
MD36010 $MA_STOP_LIMIT_FINE MD36020 $MA_POSITIONING_TIME
large can be selected relatively short
small must be selected relatively long
MD32200 $MA_POSCTRL_GAIN
(servo gain factor)
MD36020 $MA_POSITIONING_TIME
small must be selected relatively long
large can be selected relatively short
Effectivity
The position monitoring only operates with active position control and the following axis
types:
• Linear axes
• Rotary axes
• Position-controlled spindles
Fault
If the configured position-monitoring time is exceeded, the following alarm appears:
25080 "Axis <Axis identifier> Position monitoring"
The affected axis is stopped via the configured braking ramp in follow-up mode:
MD36610 $MA_AX_EMERGENCY_STOP_TIME
(Maximum time for braking ramp when an error occurs)

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based