Delta 28-299A Operations Instructions download pdf (Page 52)

7.4 Primary Motor Settings

NOTE

Default settings are marked with .

The parameters in Primary Motors Settings configure the soft

starter to match the connected motor. These parameters

describe the motor's operating characteristics and allow the

soft starter to model the motor's temperature.

1-1 Motor FLC

Option: Function:

Model

dependent

Matches the starter to the connected motor's

full load current. Set to the full load current

(FLC) rating shown on the motor nameplate.

1-2 Locked Rotor Time

Range: Function:

10 secs* [0:01 - 2:00

(min:sec)]

Sets the maximum length of the time the

motor can run at locked rotor current

from cold before reaching its maximum

temperature. Set according to the motor

datasheet.

If this information is not available, we

recommend the value should be less

than 20 seconds.

1-3 Start Mode

Option: Function:

Selects the soft start mode. See Starting

Modes in chapter Application Examples for

more details.

Constant Current

Adaptive Control

1-4 Current Limit

Range: Function:

350%* [100% -

600% FLC]

Sets the current limit for constant current

and current ramp soft starting, as a

percentage of motor full load current. See

Starting Modes in chapter Application

Examples for more details.

1-5 Initial Current

Range: Function:

350%* [100% -

600% FLC]

Sets the initial start current level for current

ramp starting, as a percentage of motor full

load current. Set so that the motor begins to

accelerate immediately after a start is initiated.

If current ramp starting is not required, set the

initial current equal to the current limit. See

Starting Modes in chapter Application Examples

for more details.

1-6 Start Ramp Time

Range: Function:

10 secs* [1 - 180

secs]

Sets the total start time for an AAC

Adaptive Control start or the ramp time for

current ramp starting (from the initial

current to the current limit). See Starting

Modes in chapter Application Examples for

more details.

1-7 Kickstart Level

Range: Function:

500%* [100% -

700% FLC]

Sets the level of the kickstart current.

CAUTION

Kickstart subjects the mechanical

equipment to increased torque levels.

Ensure the motor, load and coup

lings

can handle the additional torque

before using this feature.

1-8 Kickstart Time

Range: Function:

0000

msecs*

[0 - 2000

msecs]

Sets the kickstart duration. A setting of 0

disables kickstart. See Starting Modes in

chapter Application Examples for more

details.

CAUTION

Kickstart subjects the mechanical

equipment to increased torque levels.

Ensure the motor, load and coup

lings

can handle the additional torque

before using this feature.

1-9 Excess Start Time

Range: Function:

Excess start time is the maximum time

the MCD 500 will attempt to start the

motor. If the motor does not reach full

speed within the programmed limit, the

starter will trip. Set for a period slightly

longer than required for a normal healthy

start. A setting of 0 disables excess start

time protection.

secs

[0:00 - 4:00

(min:secs)]

Set as required.

1-10 Stop Mode

Option: Function:

Selects the stop mode. See Stopping Modes in

chapter Application Examples for more details.

Coast to Stop

TVR Soft Stop

Adaptive Control

Brake

Programming MCD 500 Operating Instruction

MG.17.K3.02 - VLT

is a registered Danfoss trademark 51

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Delta 28-299A Operations Instructions Page 52

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