Danfoss VLT HVAC User Manual

1-24 Motor Current
Value:
0.1 - 10,000 A
Size related
Function:
Enter the nominal motor current value from
the motor nameplate data. This data is used
for calculating motor torque, motor thermal
protection etc.
This parameter cannot be adjusted while the
motor is running.
1-25 Motor Nominal Speed
Value:
100 - 60,000 RPM
Size related
Function:
Enter the nominal motor speed value from the
motor nameplate data. This data is used for
calculating automatic motor compensations.
This parameter cannot be adjusted while the
motor is running.
3-41 Ramp 1 Ramp up Time
Value:
1 - 3600 s
3 s
Function:
Enter the ramp-up time, i.e. the acceleration
time from 0 RPM to the rated motor speed
n
M,N
(par. 1-25). Choose a ramp-up time such
that the output current does not exceed the
current limit in par. 4-18 during ramping. See
ramp-down time in par. 3-42.
par .3 − 41 =
t acc × n norm par .1 − 25
Δ ref rpm
s
3-42 Ramp 1 Ramp Down Time
Value:
1 - 3600 s
3 s
Function:
Enter the ramp-down time, i.e. the decelera-
tion time from the rated motor speed n
M,N
(par. 1-25) to 0 RPM. Choose a ramp-down
time such that no over-voltage arises in the
inverter due to regenerative operation of the
motor, and such that the generated current
does not exceed the current limit set in par.
4-18. See ramp-up time in par. 3-41.
par .3 − 42 =
t dec × n norm par .1 − 25
Δ ref rpm
s
4-11 Motor Speed Low Limit [RPM]
Value:
0 - 60,000 RPM
Size related
Function:
Enter the minimum limit for motor speed. The
Motor Speed Low Limit can be set to corre-
spond to the manufacturer’s recommended
minimum motor speed. The Motor Speed Low
Limit must not exceed the setting in par. 4-13
Motor Speed High Limit [RPM] .
4-12 Motor Speed Low Limit [Hz]
Value:
0 - 1000 Hz
Size related
Function:
Enter the minimum limit for motor speed. The
Motor Speed Low Limit can be set to corre-
spond to the minimum output frequency of
the motor shaft. The Motor Speed Low Limit
must not exceed the setting in par. 4-14
Motor
Speed High Limit [Hz]
.
6. How to programme the frequency converter VLT
®
HVAC Drive Operating Instructions
58 MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark
6

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz