Stop select 1, Current limit, Current lmt en – Rockwell Automation 1336 8A-48A Fiber Industry User Manual

Page 76: Overload mode, Overload amps

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5–10

Programming

[Stop Select 1]

This parameter selects the stopping mode when the
drive receives a valid stop command unless
[Stop Select 2] is selected.

Parameter Number

10

Parameter Type

Read and Write

Factory Default

“Coast”

Units

Display Drive
“Coast” 0

Causes the drive to turn off immediately.

“DC Brake” 1

Injects DC braking voltage into the motor.
Requires a value in both [DC Hold Time]
& [DC Hold Level].

“Ramp” 2

Drive decelerates to 0 Hz, then if [DC
Hold Time] & [DC Hold Level] are greater
than zero the holding brake is applied. If
the values equal zero, then the drive
turns off. Requires a value in [Decel Time
1] or [Decel Time 2].

“S Curve” 3

Drive causes S Curve Ramp to 0 Hz in
[Decel Time 1] or [Decel Time 2] x 2.

[Current Limit]

This parameter sets the maximum drive output
current that is allowed before current limiting occurs.

Parameter Number

36

Parameter Type

Read and Write

Display Units / Drive Units 1% of Max Drive Output Current / 4096 = 100%
Factory Default

150%

Minimum Value

20% of [Rated Amps]

Maximum Value

160% of [Rated Amps]

[Current Lmt En]

This parameter enables the current limit function.

Parameter Number

198

Parameter Type

Read and Write

Factory Default

“Enabled”

Units

Display Drive

“Disabled” 0

“Enabled” 1

[Overload Mode]

This parameter selects the derating factor for the I

2

T

electronic motor overload function. Motors designed
to operate with wider speed ranges need less
overload derating.

Parameter Number

37

Parameter Type

Read and Write

Factory Default

“Max Derate”

Units

Display Drive

“Max Derate” 2

2:1 Speed Range Derate below
50% of Base Speed

“Min Derate” 1

4:1 Speed Range. Derate below
25% of Base Speed

“No Derate” 0

10:1 Speed Range. No Derating

[Overload Amps]

This value should be set to the motor nameplate Full
Load Amps (FLA) for 1.0 SF motors. The value
should be set to 1.15 x nameplate FLA for 1.15 SF
motors.

Parameter Number

38

Parameter Type

Read and Write

Display Units / Drive Units

0.1 Amps / 4096 = Rated Amps

Factory Default

115% of Drive Rating

Minimum Value

20% of Drive Rated Amps

Maximum Value

115% of Drive Rated Amps

% of Load

% of Base Speed

Min Derate

0

80

100

60

40

20

0

200

175

150

125

100

75

50

25

% of Load

% of Base Speed

No Derate

0

80

100

60

40

20

0

200

175

150

125

100

75

50

25

% of Load

% of Base Speed

Max Derate

0

80

100

60

40

20

0

200

175

150

125

100

75

50

25

Overload Patterns

Setup

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