Power Supply Unit PS2
9 Power Supply Unit PS2
The input voltage range of the power supply unit PS2 is from 110 V
AC
to 480 V
AC
. The
power supply unit can be adapted to the provided mains voltage via the software.
To ensure trouble-free operation of the power supply unit an external ballast resistor
must be connected. The parameters of the resistors can be set via the software.
With PS2 device variant 0362193y you can connect an external precharge resistor to
precharge external DC link capacities.
A USB to serial converter which allows communication between the PC and the con-
nected drive amplifiers is integrated in the device. For this purpose the RS485 bus must
be connected between the power supply unit and the drive amplifiers by means of the
RJ45 connectors.
A status display shows errors of the power supply unit. The status information is sent to
the connected drive amplifiers via the signals ERR0 and ERR1.
When several power supply units are connected in a system, the device addresses from
0 to 3 can be set to distinguish them in the system.
Note
The power supply units of the type PS2 are to be used with an external line filter.
SIEB & MEYER recommends line filters by TDK & EPCOS group, see Manufacturers.
For detailed information on line filters refer to the documentation “Unit Assembly Com-
plying EMC”.
If the power input is greater than 15 kW, you must use a suitable mains choke. You can
obtain power chokes for various power ranges from different manufacturers, see Man-
ufacturers.
Note
Please consider chapter 17.1 “Mains Connection”, page 167.
DANGER
High voltages in the intermediate circuit
Note that even after the power supply unit has been switched off high volt-
ages may occur in the intermediate circuit of the complete system that can
cause serious injuries.
→ Wait until the intermediate circuit is fully discharged before cutting the
connections of the intermediate circuit ("capacitor discharge").
→ Take the following steps before working on the device or on the inter-
mediate circuit:
→ Disconnect the power supply unit definitely from the mains supply.
→ Wait until the discharge time of the of the DC link capacities has ex-
pired. It is longer than 4 minutes.
→ Ensure by measuring that the intermediate circuit is fully discharged.
→ Disconnect the intermediate circuit connections from the power sup-
ply.
→ Also consider general safety instructions before you continue working
on the device.
84 Drive System SD2 - Hardware Description
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