1326 HEIDENHAIN Technical Manual iTNC 530 HSCI
6 –STO.B.CC.WD Watchdog of CC software, switch-off of
inverters, B channel
The control has initiated the SS1F alarm
reaction.
7 –SMC.A.WD "Fast" watchdog of MC software; alarm on
CC, which initiates the deceleration of the
axes.
The control has initiated the SS1 alarm
reaction.
8 –SPL.WD With FS: Multi-channel watchdog of SPL
firmware (A/B channel); serious error of PL.
Without FS: Single-channel watchdog of
PL firmware.
The control has initiated the SS1F alarm
reaction.
9 –SMOP.WD With FS: Multi-channel watchdog of
SMOP firmware (A/B channel); serious
error of MOP machine operating panel
(SS1F).
Without FS: Single-channel watchdog of
MOP firmware (machine operating panel)
10 –PF.PS.AC Power supply of inverter too low
(parameterized LIFT OFF function in some
cases).
11 –PF.PS.DC DC-link voltage U
Z
too low
The control has initiated the SS1 alarm
reaction.
12 –PF.BOARD Fault in the supply voltage of the
respective module.
The control has initiated the SS1F alarm
reaction.
13 –N0 Internal safe status bit
The control has initiated the SS1 alarm
reaction.
14 –REQ.SS2 The control has initiated the SS2 alarm
reaction. Possible causes include:
Speed of MC fan or CC fan outside the
tolerance
Temperature of MC, CC, UEC, UMC, PL
or MB outside the tolerance
CC has detected an internal fault
15 – Reserved
Safe status
bit
Signal Meaning
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