HEIDENHAIN TNC 410 M Technical Manual page 137

Connection
overview of
ZKF 130 dc-link
filter
2 – 88
Danger
Do not engage or disengage any connecting elements while the unit is
under power!
Conductor bar Connection of dc-link voltage Uz
X79
TEMP. >>
HEIDENHAIN Technical Manual for Inverter Systems and Motors
Unit bus
Warning signal for excessive temperature
of ZKF