VLT
®
6000 HVAC
16
MG.60.G2.02 - VLT is a registered Danfoss Trademark
Figure 3 VLT 6000 Terminator Switch Factory Setting
Table 4. Terminator Switch Functions and FLN Settings
Switch
Setting
Switch 1
No function
Switches 2 & 3
Used for terminating an RS-485 interface. On ffffir
ir
ir
irs
s
s
stttt and lllla
a
a
as
s
s
stttt
devices in a multiple device network, or on the o
o
o
on
n
n
nlllly
yy
y device in a
single device network, switches 2 and 3 must be O
O
O
ON
N
N
N.
On a
a
a
alllll
l l
l o
o
o
otttth
h
h
he
e
e
er
r
r
r d
d
d
de
e
e
ev
vv
viiiic
c
c
ces
es
es
es in a multiple device network, 2 and 3
must be O
O
O
OF
F
F
FF
F
F
F.
Switch 4
Separates the common of the internal 24 VDC power supply
from the common of the digital inputs.
Normally this switch is ON and the power supply is present at
terminals 12 and 13 for digital inputs. When OFF, the negative
of an external power supply is connected to terminal 20 and
the positive output is used to turn on the desired digital inputs
(terminals 16, 17, 18, 19, 27, 29, 32, and 33).
NOTE:
NOTE:
NOTE:
NOTE:
NOTE:
Terminator switch positions must be set
correctly in accordance with Table 4 for
proper FLN serial communacation.
Hardware Setup
A terminator dip switch on the main control board
of the VLT
6000 is used to configure the drives on
the FLN bus. It is used for serial communication and
to connect and disconnect the drive’s digital inputs
from the drive’s internal DC power supply. The
switch positions shown in Figure 3 demonstrate the
factory setting. Table 4 lists the switch functions and
settings required for FLN operation.
Figure 2 Network Terminal Connection
