Bus #1, Unipolar; Bus #1, Bipolar; Bus #2, Unipolar; Bus #2, Bipolar - Aerotech DR300 Operation & Technical Manual

DR300 Operation and Technical Manual
2.2.4.2.

Bus #1, Unipolar

When the bus #1 supply is a unipolar supply, the BW5 jumper must be removed to solder
in the BW4 and BW6 jumpers.
2.2.4.3.

Bus #1, Bipolar

When the bus #1 supply is a bipolar supply, jumpers BW4 and BW6 must be removed
and the BW5 jumper must be soldered in.
2.2.4.4.

Bus #2, Unipolar

When the bus #2 supply is a unipolar supply, the BW8 jumper must be removed to solder
in the BW7 and BW9 jumpers.
2.2.4.5.

Bus #2, Bipolar

When the bus #2 supply is a bipolar supply, jumpers BW7 and BW9 must be removed
and the BW5 jumper must be soldered in.
2.2.4.6.

Bus Voltage Configuration

The bus voltage is dependent on the AC voltage applied to the AC input of the bus
supplies (#1 bus supply AC inputs are P1 and P2, #2 bus supply AC inputs are P6 and
P7). The source of AC voltage is typically from isolation transformers with output
voltages of 28, 56, or 115 VAC for unipolar supplies that correspond to DC bus voltages
of 40, 80 and 160 VDC. The bipolar isolation transformer AC voltage is 21 VAC (Line –
CT) and this corresponds to 30 VDC. For bipolar supplies, a transformer centertap
connection is also required. The Bipolar supply #1 transformer centertap connection is
BW5 and the Bus supply #2 transformer centertap connection is BW8. These
transformers are mounted internally on the left side of the DR300 with T1 used for bus
supply #1 and T2 used for bus supply #2. When Autotransformers and offline methods
are used to provide power to the bus supplies the bus supply cannot be grounded. The bus
supplies are grounded by connections to BW4 (Bus supply #1) and BW7 (Bus supply #2).
Bus supply #1 contains capacitors C1 and C2, and bus supply #2 contains capacitors C3
and C4. These capacitors are 100-volt capacitors for bus voltages of 80 volts or less and
200-volt capacitors for bus voltages greater than 80 volts.
Bus supply #1 is the supply for axis #1 and any axis connected to this bus. Bus supply #2
is the supply for axis #4 and any axis connected to this bus. Axis 2 and 3 can be
connected to bus supplies in several different arrangements. A restriction concerning bus
separation requires that amplifiers with like voltages must be in consecutive slots. See the
Bus separation selection (Table 2-2) for additional information concerning the bus
separation jumpers (Bus separation jumpers: BW1, BW2, BW3, BW14, BW24, BW34,
BW51, BW52 and BW53).
It may be necessary to add an optional shunt regulator to either bus to dissipate
regenerative energy from the load.
Always disconnect the main power connection before opening the DR300.
Version 1.5
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