61
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
★
= factory setting. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
3.8 Parameter gr
oup 4
400 Terminal 16 input (INPUT 16)
Value:
★
Reset (RESET)
[0]
Stop (STOP)
[1]
Freeze reference (FREEZE REF.)
[2]
Selection of set-up (SETUP SELECT)
[3]
Thermistor (THERMISTOR)
[4]
External H-O-A Hand (EXT. HOA HAND)
[5]
Function:
Used for choosing between different possible
functions of terminal 16.
Description of choice:
Reset
[0]:
With 24 V DC from terminal 12 connected to terminal
16, the frequency converter can be reset after trip-
ping. Refer to the section on reset messages.
Stop
[1]:
The stop function is activated by removing 24 V DC
from terminal 12 to terminal 16. This means that ter-
minal 16 must be on for the motor to be able to run.
A stop will be effected in accordance with the ramp
time selected in parameter 216. The function is
normally used together with pulse start on
terminal 18 (parameter 402). A pulse which breaks
the connection from terminal 12 to terminal 16 for
min. 20 msec. will effect a stop function.
Freeze reference
[2]:
Selected if terminals 32/33 (parameter 406) are to be
used for digital control of speed up/down (motor po-
tentiometer). 24 V DC from terminal 12 to terminal 16
will freeze the existing reference, and the speed can
be changed by means of terminals 32/33 (parameter
406 = speed up/down).
Choice of set-up
[3]:
If
Multi set-up
[5] has been selected in parameter
001, terminal 16 allows a choice of Set-up 1 ("0") and
Set-up 2 ("1"). If more than 2 set-ups are required,
both terminals 16 and 17 (parameter 401) must be
used for choosing the set-up.
Set-up
Terminal 17
Terminal 16
1
0
0
2
0
1
3
1
0
4
1
1
Thermistor
[4]:
Selected if the thermistor that may be integrated in
the motor is to be able to stop the frequency conver-
ter if the motor is overheated. The tripping value is
≥
3 k
Ω
Typical characteristics of a thermistor
