Unidrive M300/HS30 Quick Start Guide 13
Issue Number: 7
4 Electrical installation
An overlay of the electrical connections / terminals is included on the back page of this manual.
4.1 AC supply requirements
Voltage:
100 V drive: 100 V to 120 V ±10 %
200 V drive: 200 V to 240 V ±10 %
400 V drive: 380 V to 480 V ±10 %
Number of phases: 3
Maximum supply imbalance: 2 % negative phase sequence (equivalent to 3 % voltage imbalance
between phases).
Frequency range: 45 to 66 Hz
For UL compliance only, the maximum supply symmetrical fault current must be limited to 100 kA.
4.2 External braking resistor
4.2.1 Minimum resistance values and peak power rating for the braking resistor
at 40 °C (104 °F)
Table 4-1 Braking resistor resistance and power rating (100 V)
* Resistor tolerance: ±10 %
On the size 2 110 V drives or when connecting single phase to a dual rated 200 V unit, the
supply should be connected to L1 and L3. Also the DC bus (-) terminal on 110 V drives
has no internal connection. The 110 V drives use a voltage doubler circuit on the input,
therefore the default for Motor Rated Voltage (Pr 08) is 230 V.
Overload protection
When an external braking resistor is used, it is essential that an overload protection device
is incorporated in the braking resistor circuit; as shown in the electrical diagram on the
back cover.
Model
Minimum
resistance*
Ω
Instantaneous
power rating
kW
Continuous
power rating
kW
01100017
130 1.1
0.25
01100024 0.37
02100042
68 2.2
0.75
02100056 1.1
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