Danfoss VLT FC 102 Operating Instructions Manual page 77

VLT HVAC Low Harmonic Drive Operating In-
structions
NB!
When carrying out manual initialisationrestore, serial communication, RFI filter settings and fault log settings are reset.
Removes parameters selected in par. 0-25
1. Disconnect from mains and wait until the display turns off.
2a. Press [Status] - [Main Menu] - [OK] at the same time while
power up for Graphical LCP (GLCP)
2b. Press [Menu] while power up for LCP 101, Numerical Display
3. Release the keys after 5 s
4. The frequency converter is now programmed according to
default settings
5.1.10 RS-485 Bus Connection
Both filter portion and frequency converter can be connected to a con-
troller (or master) together with other loads using the RS-485 standard
interface. Terminal 68 is connected to the P signal (TX+, RX+), while
terminal 69 is connected to the N signal (TX-,RX-).
Always use parallel connections for the Low harmonic Drive to ensure that
both filter and drive part is connected..
In order to avoid potential equalizing currents in the screen, earth the cable screen via terminal 61, which is connected to the frame via an RC-link.
Bus termination
The RS-485 bus must be terminated by a resistor network at both ends. If the drive is the first or the last device in the RS-485 loop, set the switch S801
on the control card for ON.
For more information, see the paragraph
5.1.11 How to connect a PC to the frequency converter
To control or program the frequency converter (and the filter part) from a PC, install the PC-based Configuration Tool MCT 10.
The PC is connected via a standard (host/device) USB cable to both devices, or via the RS-485 interface as shown in the VLT HVAC Drive
chapter How to Install > Installation of misc. connections .
NB!
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals. The USB connection is
connected to protection earth on the frequency converter. Use only an isolated laptop as PC connection to the USB connector on the
frequency converter.
My Personal Menu .
Switches S201, S202, and S801 .
®
MG.16.A1.02 - VLT is a registered Danfoss trademark
5 How to Operate the Low Harmonic Drive
This parameter initialises all except:
Par. 15-00 Operating Hours
Power Up's
Par. 15-03
Over Temp's
Par. 15-04
Over Volt's
Par. 15-05
Illustration 5.4: Connection example.
5
Design Guide,
77