66
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
406 Terminals 32/33 input (INPUT 32/33)
Value:
Choice of digital reference (SPEED SELECT)
[0]
Speed up/down (SPEED UP/DOWN)
[1]
Choice of set-up (SETUP SELECT)
[2]
★
4 set-ups, extended (4 SETUP EXT.)
[3]
Function:
Used for choosing between the possible functions of
terminals 32/33.
Description of choice:
Selection of digital reference
[0]:
Selected if up to 4 different, pre-programmed, digital
speed
references are to be chosen, using a binary code in
accordance with the table below:
Digital reference
Terminal 33
Terminal 32
1 (parameter 205)
0
0
2 (parameter 206)
0
1
3 (parameter 207)
1
0
4 (parameter 208)
1
1
Speed up/down
[1]:
Selected if digital control of the speed up/down is
desired (motor potentiometer). This function is only
active if Freeze reference/Freeze jogging reference
has been selected in parameter 400, 401 or 405, and
if the corresponding terminal 16, 17 or 29 is supplied
with 24 V DC from terminal 12.
As long as terminal 32 receives 24 V DC from terminal
12, the output frequency will increase up to f
MAX
(para-
meter 202).
As long as terminal 33 receives 24 V DC from terminal
12, the output frequency will decrease down to f
MIN
(parameter 201). Terminal 33 is the default terminal.
Terminal 33
Terminal 32
No reference change
0
0
Increase reference
0
1
Reduce reference
1
0
Reduce reference
1
1
A pulse where 24 V DC from terminal 12 is supplied
to terminal 32/33 (logic "1" with a duration of between
20 msec. and 500 msec.) will lead to a change of
speed of 0.1 Hz at the output.
Logic "1" for more than 500 msec. will make the out-
put frequency change in relation to the set ramps
(parameters 215 and 216).
The digital speed reference can be adjusted even if
the unit has stopped (does not apply to motor
coasting stop, quick-stop or DC-braking on terminal
27). The speed reference is remembered after a
mains cut-out if it was constant for at least 15 sec.
(see also parameter 014).
Choice of set-up
[2]:
If
multi set-up
has been selected in parameter 001,
there is a choice between
set-up 1
,
set-up 2
,
set-up
3
and
set-up 4
in accordance with the table below:
Set-up
Terminal 33
Terminal 32
1
0
0
2
0
1
3
1
0
4
1
1
4 set-ups, extended
[3]:
Selected if the same function is desired on terminal
32/33 as on the first generation of the VLT 3000
range, with extended control card and with 4 set-up
functions. If freeze reference is not selected in para-
meter 400, 401 or 405, the following set-ups are
available:
Set-up
Terminal 32
Terminal 33
1
0
0
2
0
1
3
1
0
4
1
1
If, however, the reference is frozen in either parameter
400, 401 or 405, it will be possible to choose
between two functions by means of terminal 16, 17 or
29. Terminal 16, 17 or 29 without any voltage
connected (logic "0").
Set-up
Terminal 32
Terminal 33
1
0
0
2
0
1
3
1
0
4
1
1
Terminal 16, 17 or 29 receiving 24 V DC from terminal
12 (logic "1").
Terminal 33
Terminal 32
Freeze reference (summed)
0
0
Increase reference
0
1
Reduce reference
1
0
Reduce reference
1
1
★
= factory setting. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
3.8 Parameter gr
ouup 4
