Danfoss vlt AQUA Instruction Manual page 67

®
VLT AQUA Drive
Instruction Manual
Manual initialization
NOTE!
When carrying out manual initialization, serial communication, RFI filter settings and fault log settings are reset.
Removes parameters selected in par. 0-25
1. Disconnect from the line power and wait until the display
turns off.
2a. Press [Status] - [Main Menu] - [OK] at the same time as
powering up the Graphical LCP (GLCP).
2b. Press [Menu] while the LCP 101, Numerical Display is pow-
ering up.
3. Release the keys after 5 s.
4. The adjustable frequency drive is now programmed according
to default settings.
7.1.12 RS-485 Bus Connection
One or more adjustable frequency drives can be connected to a controller
(or master) using the standard RS-485 interface. Terminal 68 is connec-
ted to the P signal (TX+, RX+), while terminal 69 is connected to the N
signal (TX-, RX-).
If more than one adjustable frequency drive is connected to a master,
use parallel connections.
In order to avoid potential equalizing currents in the screen, ground 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 to ON.
For more information, see the paragraph
7.1.13 How to Connect a PC to the Adjustable Frequency Drive
To control or program the adjustable frequency drive from a PC, install the PC-based Configuration Tool MCT 10.
The PC is connected via a standard (host/device) USB cable, or via the RS-485 interface as shown in the
of misc. connections .
NOTE!
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals. The USB connection is
connected to protection ground on the adjustable frequency drive. Use only an isolated laptop for PC connection to the USB connector
on the adjustable frequency drive.
My Personal Menu
Switches S201, S202, and S801 .
®
MG.20.M5.22 - VLT is a registered Danfoss trademark
7 How to operate the adjustable frequency
.
This parameter initializes everything except:
par. 15-00 Operating Hours
Power-ups
par. 15-03
Over Temps
par. 15-04
Over Volts
par. 15-05
Figure 7.9: Connection example.
Design Guide, chapter How to Install > Installation
drive
7
7-11