Required Equipment; Grounding And Safety - TDK-Lambda GENESYS User Manual

3. Required Equipment

To remotely control a Genesys™ power supply through the USB, the following items are required:
a. Computer with USB port, or a USB hub to expand the number of ports.
b. Genesys™ power supply with the USB interface option.
c. Driver disk from the power supply shipping container.
d. AC power cord as required by the power supply.
e. A USB cable, Type "A" plug to type "B" plug
The

4. Grounding and Safety

Special consideration must be given to your USB connection to make sure the grounding scheme is understood
and to ensure no ground offsets or hazardous voltages can cause damage to the port.
The USB Shield:
The shield is connected to the power supply chassis.
The USB Signals:
For the GENH, GEN 1U and GEN 2U power supplies: the USB signal lines are connected Safety Extra
Low Voltage (SELV) ground. This is isolated from the chassis and the outputs, but the ground is tied to
the J1 analog connector on the pins 1 and 14 side.
For the GEN 3U (10 KW and higher): the USB signal lines are connected to chassis ground.
In power applications where high currents are switched suddenly, ground offsets can occur that could
damage the USB circuits in the controller or the power supply.
USB cable is not provided
Where high voltages or currents are being used, it is
strongly recommended to install an electrical isolator
OUTPUT TERMINALS GROUNDING
There is a potential shock hazard at the USB port when using power
supplies with rated or combined voltage greater than 400V and the
Positive Output of the Power Supply is grounded.
Do Not connect the Positive Output to ground in a power supply in
which you are connecting to a USB port.
NOTE
with the power supply shipping kit.
CAUTION
device into the USB line.
WARNING
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