How To Connect A Pc To The Frequency Converter; Pc Software; Safety; High Voltage Test - Danfoss VLT AutomationDrive FC 300 Design Manual

Electrical Installation
1. Use cable clamps to connect the screen to the
conductive back plate on the frequency converter
and to the metal cabinet of the brake resistor.
2. Size the brake cable cross-section to match the
brake torque.
No. Function
81, 82 Brake resistor terminals
Table 7.71 Brake Resistor Terminals
See the Brake Resistor Design Guide for more details.
NOTICE
If a short circuit in the brake IGBT occurs, prevent power
dissipation in the brake resistor by using a mains switch
or contactor to disconnect the mains for the frequency
converter. Only the frequency converter should control
the contactor.
CAUTION
Note that voltages up to 1099 V DC may
occur on the terminals.
F-Frame Requirements
Connect the brake resistor(s) to the brake terminals in each
inverter module.
7.6.4 How to Connect a PC to the
Frequency Converter
To control the frequency converter from a PC, install the
MCT 10 Set-up Software. The PC is connected via a
standard (host/device) USB cable, or via the RS-485
interface as shown in the section Bus Connection in the
Programming Guide.
USB is a serial bus utilises 4 shielded wires with ground pin
4 connected to the shield in the PC USB port. All standard
PCs are manufactured without galvanic isolation in the USB
port.
Follow the earth/ground recommendations described in
Connection to Mains and Earthing, VLT
Operating Instructions to prevent damage to the USB host
controller through the shield of the USB cable.
When connecting the PC to the frequency converter
through a USB cable, Danfoss recommends using a USB
isolator with galvanic isolation to protect the PC USB host
controller from earth/ground potential differences. It is also
recommended not to use a PC power cable with a ground
plug when the PC is connected to the frequency converter
through a USB cable. This reduces the earth/ground
potential difference, but does not eliminate all potential
differences due to the ground and shield connected in the
PC USB port.
®
VLT AutomationDrive FC 300 Design Guide 90-1200 kW

7.6.5 PC Software

To store data in PC via MCT 10 Set-Up Software, use the
following steps:
All parameters are now stored.
To transfer data from PC to frequency converter via MCT
10 Set-Up Software, use the following steps:
All parameters are now transferred to the frequency
converter.
A separate manual for MCT 10 Set-up Software is available.

7.7 Safety

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AutomationDrive

7.7.1 High Voltage Test

Carry out a high voltage test by short-circuiting terminals
U, V, W, L
380-500 V frequency converters and 2.525 kV DC for 525–
690 V frequency converters for one second between this
short-circuit and the chassis.
MG34S202 - Rev. 2013-08-19
Illustration 7.55 USB Connection
1. Connect a PC to the unit via USB com port.
2. Open MCT 10 Set-up Software.
3. Select the USB port in the "network" section.
4. Select "Copy".
5. Select the "project" section.
6. Select "Paste".
7. Select "Save as".
1. Connect a PC to the unit via USB com port.
2. Open MCT 10 Set-up software.
3. Select "Open"– stored files will be shown.
4. Open the appropriate file.
5. Select "Write to drive".
, L , and L . Energize maximum 2.15 kV DC for
1 2 3
7 7
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