Siemens SINUMERIK 840D sl Function Manual page 640

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27022 Axis %1 STOP C activated
Response NC start disable in this channel
Interface signals are set
Alarm display
NC stop for alarm
"Braking along the current limit / OFF3 ramp" is initiated and the Safe Operating Stop (SBH) is internally
activated after the time set in MD36952 $MA_SAFE_STOP_SWITCH_TIME_C has expired.
Remedy Remove the causes for "safely reduced speed exceeded" or "safe limit position exceeded" alarm (refer to a
description of the alarms).
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27023 Axis %1: STOP B initiated
Parameter %1 = axis name, spindle number
Explanation This alarm comes with alarm 27010 "Tolerance for Safe Operating Stop exceeded" or after alarm 27001
"Defect in a monitoring channel" or 2710x "Difference for function...". The alarm can be re-configured in the
MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not ready).
Response Mode group not ready
Channel not ready
NC start disable in this channel
Interface signals are set
Alarm display
NC stop for alarm
"Braking at the current limit / OFF3 ramp " is initiated and the timer for changeover to STOP A is activated
(refer to MD36956 $MA_SAFE_PULSE_DISABLE_DELAY).
Remedy Remove the causes of alarm 27010 "Tolerance for safe standstill exceeded" or 27001 "Defect in a monitoring
channel" or 2710x "Difference for function..." (see a description of the alarms).
Program con‐ Switch control system OFF and ON again.
tinuation
27024 Axis %1 STOP A activated
Parameter %1 = axis name, spindle number
Explanation This alarm is output as a result of
● Alarm 27011 "Safely reduced speed exceeded" (for the appropriate configuring in
MD36961 $MA_SAFE_VELO_STOP_MODE,
MD36963 $MA_SAFE_VELO_STOP_REACTION),
● Alarm 27013 "Safe Acceleration Monitor exceeded"
● Alarm 27023 "Stop B initiated"
● Unsuccessful test stop.
The alarm can be re-configured in the MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not
ready).
640
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated