S1: Spindles
16.8 Spindle monitoring
Basic Functions
1344 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
16.8.4 Minimum / maximum speed of the gear stage
Minimum speed
The minimum speed of the gear stage of a spindle is configured in the machine data:
MD35140 $MA_GEAR_STEP_MIN_VELO_LIMIT[<n>]
The speed setpoints, generated taking into account the override, do not fall below the minimum speed.
If an S value is programmed, which is less than the minimum speed, the setpoint speed is increased to the
minimum speed and the following NC/PLC interface signal is set:
DB31, ... DBX83.2 (Setpoint speed restricted)
The minimum gear stage speed is effective only in speed mode and can only be undershot by:
• Spindle override 0%
•M5
•S0
• DB31, ... DBX4.3 (spindle stop)
• DB31, ... DBX2.1 (withdraw controller enable)
• DB21, ... DBX7.7 (reset)
• DB31, ... DBX2.2 (delete distance to go/spindle reset)
• DB31, ... DBX18.5 (oscillation speed)
• DB21, ... DBX7.4 (NC-STOP axes plus spindles)
• DB31, ... DBX1.3 (axis/spindle disable)
• DB31, ... DBX16.7 (delete S value)
Maximum speed
The maximum speed of the gear stage of a spindle is configured in machine data:
MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT[<n>]
The speed setpoints, generated taking into account the override, are limited to this speed.
The following NC/PLC interface signal is set in the case that the speed is limited:
DB31, ... DBX83.1 (Setpoint speed restricted)
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