Delta 28-299A Instruções de Operação descarregar pdf (Página 53)

1-11 Stop Time

Range: Function:

0 secs* [0:00 - 4:00

(min:secs)]

Sets the time for soft stopping the motor

using timed voltage ramp or Adaptive

Control (AAC). If a main contactor is

installed, the contactor must remain closed

until the end of the stop time. Use a

programmable output configured to Run

to control the main contactor. Sets the toal

stopping time when using brake. See

Stopping Modes in chapter Application

Examples for more details.

1-12 Adaptive Control Gain

Range: Function:

75%* [1% -

200%]

Adjusts the performance of AAC adaptive

acceleration control. This setting affects both

starting and stopping control.

NOTE

We recommend leaving the gain setting at

the default level unless AAC performance

is not satisfactory.

If the motor accelerates

or decelerates quickly at the end of a start

or stop, increase the gain settin

g by

5%~10%. If the motor speed fluctuates

during starting or stopping, decrease the

gain setting slight

ly.

1-13 Adaptive Start Profile

Option: Function:

Selects which profile the MCD 500 will

use for an AAC adaptive acceleration

control soft start. See Starting Modes in

chapter Application Examples for more

details.

Early Acceleration

Constant Acceleration

Late Acceleration

1-14 Adaptive Stop Profile

Option: Function:

Selects which profile the MCD 500 will

use for an AAC adaptive acceleration

control soft stop. See Stopping Modes in

chapter Application Examples for more

details.

Early Deceleration

Constant Deceleration

Late Acceleration

7.4.1 Brake

Brake uses DC injection to actively slow the motor. See

Stopping Modes in chapter Application Examples for more

details.

1-15 Brake Torque

Range: Function:

20%* [20 - 100%] Sets the amount of brake torque the MCD 500

will use to slow the motor.

1-16 Brake Time

Range: Function:

1 sec* [1 - 30 secs] Sets the duration for DC injection during a

braking stop.

NOTE

Parameter 1-16 is used in conjunction

with Par. 1-11. See Brake for details.

7.5 Protection

2-1 Phase Sequence

Option: Function:

Selects which phase sequences the soft starter

will allow at a start. During its pre-start checks,

the starter examines the sequence of the phases

at its input terminals and trips of the actual

sequence does not match the selected option.

Any sequence

Positive only

Negative only

7.5.1 Current Imbalance

The MCD 500 can be configured to trip if the currents on the

three phases vary from each other by more than a specified

amount. The imbalance is calculated as the difference

between the highest and lowest currents on all three phases,

as a percentage of the highest current.

Current imbalance detection is desensitised by 50% during

starting and soft stopping.

2-2 Current Imbalance

Range: Function:

30%* [10% - 50%] Sets the trip point for current imbalance

protection.

2-3 Current Imbalance Delay

Range: Function:

3 secs* [0:00 - 4:00

(min:secs)]

Slows the MCD 500's response to

current imbalance, avoiding trips

due to momentary fluctuations.

7.5.2 Undercurrent

The MCD 500 can be configured to trip if the average current

of all three phases drops below a specified level while the

motor is running.

Programming MCD 500 Operating Instruction

52 MG.17.K3.02 - VLT

is a registered Danfoss trademark

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 76 77

Comentários a estes Manuais

Sem comentários

Delta 28-299A Instruções de Operação Página 53

Comentários a estes Manuais

Manuais e produtos relacionados com Serras circulares Delta 28-299A