HEIDENHAIN MANUALplus 620 Technical Manual page 194

X33: Input voltage
of the PSL 130
194
Supply voltage: 400 V ± 10 %
Connection:
Connecting terminal
L1
L2
Tightening torque:
for the connecting terminals
0.5 to 0.6 Nm
Grounding terminal:
≥ 10 mm 2
(AWG 6)
Strain relief:
Ensure that the connecting cables are not subject to excessive strain.
Through the connection to the 400 V AC line voltage (L1, L2) via X33, the out-
put voltages of the PSL 130 are available as soon as the machine's main
switch has been turned on. The connection of L1 and L2 is absolutely essential
for booting the control.
Since the power to the PSL 130 is supplied through the DC-link, the voltage
fed into the DC-link by the motors that are still running can be used during line
voltage failures. The PSL 130 uses the supply voltage buffered via the DC-link
to maintain the power supply for the control until the inverter system has been
shut down properly by the control.
Note
HEIDENHAIN recommends connecting the PSL 130 power supply unit to
the U DC-link voltage and the 400 V supply voltage (X33).
z
Operation of the PSL 130 without a connection to the U
sible, e.g. as PLC supply in combination with the UEC 11x.
However, be aware that operation with the U
power connection (L1 and L2) at X33 is not possible. The line voltage is nec-
essary for the PSL 130 to start correctly.
Assignment
Phase 1 / 400 V~ ±10 % / 50 Hz to 60 Hz
Phase 2 / 400 V~ ±10 % / 50 Hz to 60 Hz
Protective ground (YL/GN),
≥ 10 mm
2
Connecting lead:
Wire cross section: at least 1.5 mm
Conductor protection (back-up fuse):
Fuses or a motor protection switch of 6.3 A or
greater depending on the wire cross section
used.
Line fuse:
Internal protection of the PSL (4 A).
DC-link voltage but without the
z
HEIDENHAIN Technical Manual MANUALplus 620
2
(AWG 16)
dc-link voltage is pos-
z