27
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
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Example 4:
A pump is to be controlled by means of a 0-10 V con-
trol signal, corresponding to 0-50 Hz.
"Start/Stop" is to be in the form of a 3-wire.
"Start/Stop".
It is required to obtain information about the output
current via the anolog output. 0-20 mA
corresponds to zero to max. output current.
NB!:
NB!:
NB!:
NB!:
NB!:
Screen for control cables must be connected
as described in the chapter on EMC-correct
installation.
All settings are based on factory settings; however,
motor data settings (parameters 104, 105 and 107)
(or the Quick Set-up menu items 1, 2 and 3) are to be
adjusted to the motor connected.
The following must be programmed:
Function
Parameter no.
Parameter value
Data value no.
STOP
404
STOP
[4]
START
402
LATCH START
[1]
0-I
MAX
407
I
MAX
0-20 mA
[25]
Reference
412
0-10 V DC
[1]
1 = Stop
2 = Start
3 = 0-20 mA
output signal (0-I
MAX
)
4 = 0-10 V
control signal (0-100% speed)
2.7 installation examples
