Danfoss VLT HVAC, Руководство по программированию

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3.5 Main Menu - Limits/Warnings - Group 4
3.5.1 4-1* Motor Limits
Define current and speed limits for the motor, and the
reaction of the frequency converter when the limits are
exceeded.
4-10 Motor Speed Direction
Option: Function:
[0] Clockwise Only operation in clockwise direction will be
allowed.
[2]
*
Both directions Operation in both clockwise and anti-
clockwise direction will be allowed.
NOTE
The setting in 4-10 Motor Speed Direction has impact on
1-73 Flying Start .
4-12 Motor Speed Low Limit [Hz]
Range: Function:
0.0 Hz
*
[0.0 - 400.0
Hz] Enter the minimum limit for motor speed.
The Motor Speed Low Limit can be set to
correspond to the minimum output
frequency of the motor shaft. The Speed
Low Limit must not exceed the setting in
4-14 Motor Speed High Limit [Hz] .
4-14 Motor Speed High Limit [Hz]
Range: Function:
65.0 Hz
*
[0.1 - 400.0
Hz] Enter the maximum limit for motor speed.
4-14 Motor Speed High Limit [Hz] can be set
to match the manufacturer's
recommended max. motor speed. The
Motor Speed High Limit must exceed the
value in
4-12 Motor Speed Low Limit [Hz] .
NOTE
Max. output frequency cannot exceed 10% of the inverter
switching frequency (
14-01 Switching Frequency ).
NOTE
Motor Speed High Limit cannot be set higher than 4-19 Max
Output Frequency .
4-18 Current Limit
Range: Function:
110.0
%
*
[0.0 -
300.0 %] Enter the current limit for motor and
generator operation (in % of rated motor
current. If the value is higher than maximum
rated output from frequency convterter,
current will still be limited by the frequency
converters maximum current). If a setting in
1-00 Configuration Mode to 1-25 Motor Nominal
Speed is changed, 4-18 Current Limit is not
automatically reset to the default setting.
4-19 Max Output Frequency
Range: Function:
65.0
Hz
*
[0.0 -
400.0 Hz] Enter the max. output frequencyvalue.
4-19 Max Output Frequency specifies the
absolute limit on the frequency converter
output frequency for improved safety in
applications where accidental over-speeding
must be avoided. This absolute limit applies
to all configurations and is independent of
the setting in
1-00 Configuration Mode .
3.5.2 4-5* Adj. Warnings
Define adjustable warning limits for current. Warnings are
shown on the display, programmed output or serial bus.
4-50 Warning Current Low
Range: Function:
0.00 A
*
[0.00 -
194.00 A] Enter the I-low value. When the motor
current falls below this limit, a bit in the
drives statusword will be set. This value can
also be programmed to produce a signal on
the digital output or the relay output.
4-51 Warning Current High
Range: Function:
194.00 A
*
[0.00 -
194.00 A] Enter the I-high value. When the motor
current exceeds this limit, a bit in the
drives statusword will be set. This value
can also be programmed to produce a
signal on the digital output or the relay
output.
4-58 Missing Motor Phase Function
Option: Function:
Select On, to display an alarm in the event of a missing
motor phase. Select Off, for no missing motor phase
alarm. However the On setting is strongly recommended
to avoid motor damage.
[0] Off No alarm is displayed if a missing motor phase occurs.
[1]
*
On An alarm is displayed is a missing motor phase occurs.
Parameters VLT HVAC Basic Drive Programming Guide
MG.18.B1.02 - VLT
®
is a registered Danfoss trademark 33
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