Danfoss VLT HVAC Basic Drive FC 101 Información técnica descargar pdf (Pagina 34)

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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