33
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
Section 1Section 1Section 1Section 1Section 1
Section 2Section 2Section 2Section 2Section 2
Section 3Section 3Section 3Section 3Section 3
Section 4Section 4Section 4Section 4Section 4
Control panel
In order to programme and locally control the
frequency converter, use the control panel at the front
of the frequency converter.
The control panel serves a dual purpose:
-
Local operation
-
Programming
The control panel consists of:
-
a display, which establishes a dialogue between
the user and the frequency converter,
-
some keys, which each have one or several
functions (described later on in this chapter),
-
two light diodes, which indicate:
green (On): VLT 3500 HVAC is connected to
supply mains
red (Alarm): in case of an alarm.
■
Description of the display
The display is designed to be lit whenever the
frequency converter is connected to supply
mains.
The display consists of 3 lines:
Line A
large print, 7 characters.
Lines B and C
small print, 14 characters.
■
■
Keys for local operation
The following keys are available on the frequency con-
verter for local operation:
This key is used for starting up VLT 3500
HVAC.
This key is used exclusively for local control of
the frequency converter via the operating
panel. When the key is activated, the operating
panel display will show an image indicating
that the frequency converter is in Local Mode.
The key can be de-activated in parameter 010,
see page 41.
These keys are used for changing the motor
frequency in Local mode.
Image of Local Mode
Use+/-
0
0----------050
0.0Hz
This key is used to stop the connected motor.
If stop is activated, the top line in the display
will start to flash. The key on the operating pa-
nel of the frequency converter does not turn off
the mains supply and is thus not to be used as
a safety switch.
The key is also used for resetting VLT 3500
HVAC after a trip occurence.
Furthermore, the Speed bar in Local Mode will
change from filled-in squares, which is the
speed, to unfilled squares in Stop Mode, which
is the reference.
The local reference can also be seen in the
bottom right-hand corner of the display (also in
Stop Mode).
This key is used to switch (back from local
operation) to remote control (Remote Mode), in
which control is effected via the control
terminals of the frequency converter.
Operation and programming
■
3.1 Display and keypad
