Danfoss VLT User Manual

3-16 Reference 2 Source
Option: Function:
Select the reference input to be used for the second reference signal. par.3-15 Reference 1
Source
, par.3-16 Reference 2 Source and par. 3-17 Reference 3 Source define up to three different
reference signals. The sum of these reference signals defines the actual reference.
This parameter cannot be adjusted while the motor is running.
[0] No function
[1] Analog input 53
[2] Analog input 54
[7] Pulse input 29
[8] Pulse input 33
[20] * Digital pot.meter
[21] Analog input X30/11
[22] Analog input X30/12
[23] Analog Input X42/1
[24] Analog Input X42/3
[25] Analog Input X42/5
[30] Ext. Closed-loop 1
[31] Ext. Closed-loop 2
[32] Ext. Closed-loop 3
4-10 Motor Speed Direction
Option: Function:
Selects the motor speed direction required.
Use this parameter to prevent unwanted reversing.
[0] Clockwise Only operation in a clockwise direction will be allowed.
[2] * Both directions Operation in both a clockwise and anti-clockwise direction will be allowed.
NOTE!
The setting in par.4-10
Motor Speed Direction has impact on the Flying Start in par.1-73 Flying Start .
4-53 Warning Speed High
Range: Function:
par. 4-13
RPM*
[par. 4-52 - par. 4-13 RPM] Enter the n
HIGH
value. When the motor speed exceeds this limit (n
HIGH
), the display reads SPEED
HIGH. The signal outputs can be programmed to produce a status signal on terminal 27 or 29, and
on relay output 01 or 02. Program the upper signal limit of the motor speed, n
HIGH
, within the normal
working range of the adjustable frequency drive. Refer to the drawing in this section.
NOTE!
Any changes in par.4-13
Motor Speed High Limit [RPM] will reset the value in par.4-53 Warning Speed High to the same value as set
in par.4-13
Motor Speed High Limit [RPM] .
If a different value is needed in par.4-53
Warning Speed High , it must be set after programming of par.4-13 Motor Speed High Limit
[RPM]
!
6 How to program the adjustable frequency
drive
VLT
®
HVAC Drive Instruction Manual
6-28 MG.11.A9.22 - VLT
®
is a registered Danfoss trademark
6

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)