1.2
1.0
1.4
30
10
20
100
60
40
50
1.8
1.6
2.0
2000
500
200
400
300
1000
600
t [s]
175ZA052.12
fOUT = 2 x f M,N
fOUT = 0.2 x f M,N
fOUT = 1 x f M,N(par. 1-23)
I
MN
(par. 1-24)
I
M
In order to maintain PELV, all connections made to
the control terminals must be PELV, e.g. thermistor
must be reinforced/ double insulated
Danfoss recommends using 24V DC as thermistor
supply voltage.
The ETR timer function does not work when
par. 1-10
Motor Construction
= [1] PM, non salient
SPM.
For correct operation of ETR function setting in
par. 1-03
must fit the applica-
tion (see description of par. 1-03
).
1-93 Thermistor Source
Option:
Function:
Select the input to which the thermistor (PTC sensor) should be connected. An analog input op-
tion [1] or [2] cannot be selected if the analog input is already in use as a reference source (se-
lected in par. 3-15
or par. 3-17
Reference 3
Source
).
When using MCB 112, choice [0]
None
must always be selected.
[0] *
None
[1]
Analog input 53
[2]
Analog input 54
[3]
Digital input 18
[4]
Digital input 19
[5]
Digital input 32
[6]
Digital input 33
NB!
This parameter cannot be adjusted while the motor
is running.
NB!
Digital input should be set to [0]
PNP - Active at 24V
in par. 5-00
Digital I/O Mode
.
2-00 DC Hold/Preheat Current
Range:
Function:
50 %*
[ 0 - 160. %]
Enter a value for holding current as a percentage of the rated motor current I
M,N
set in
. 100% DC holding current corresponds to I
M,N
.
This parameter holds the motor (holding torque) or pre-heats the motor.
This parameter is active if [1] DC hold/Preheat is selected in par. 1-80
fect when par. 1-10
Motor Construction
= [1] PM,
non salient SPM.
The maximum value depends on the rated motor
current.
Avoid 100 % current for too long. It may damage the
motor.
VLT HVAC Drive High Power Operating In-
structions
6 How to Programme
MG.11.F3.02 - VLT
®
is a registered Danfoss trademark
107
6