Operating instructions

In order to maintain PELV, all connections made to the
control terminals must be PELV, e.g. thermistor must be
reinforced/ double insulated
NOTE
Danfoss recommends using 24 VDC as thermistor supply
voltage.
1-91 Motor External Fan
Option: Function:
[0] * No No external fan is required, i.e. the motor is derated at
low speed.
[1] Yes Applies an external motor fan (external ventilation), so
no derating of the motor is required at low speed. The
graph below is followed if the motor current is lower
than nominal motor current (see par. 1-24 Motor
Current). If the motor current exceeds nominal current,
the operation time still decreases as if no fan were
installed.
1-93 Thermistor Source
Option: Function:
Select the input to which the thermistor
(PTC sensor) should be connected. An
analog input option [1] or [2] cannot be
selected if the analog input is already in use
as a reference source (selected in
par. 3-15 Reference 1 Source,
par. 3-16 Reference 2 Source 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
NOTE
This parameter cannot be adjusted while the motor is
running.
NOTE
Digital input should be set to [0] PNP - Active at 24V in
par. 5-00.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 45
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