194 HEIDENHAIN Technical Manual MANUALplus 620
X33: Input voltage
of the PSL 130
Supply voltage: 400 V ± 10 %
Connection:
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.
Operation of the PSL 130 without a connection to the U
z
dc-link voltage is pos-
sible, e.g. as PLC supply in combination with the UEC 11x.
However, be aware that operation with the U
z
DC-link voltage but without the
power connection (L1 and L2) at X33 is not possible. The line voltage is nec-
essary for the PSL 130 to start correctly.
Connecting terminal Assignment
L1 Phase 1 / 400 V~ ±10 % / 50 Hz to 60 Hz
L2 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
2
(AWG 16)
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).
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.
HEIDENHAIN recommends connecting the PSL 130 power supply unit to
the U
z
DC-link voltage and the 400 V supply voltage (X33).
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