157 dc brake lvl sel, 158 dc brake level, 159 dc brake time – Rockwell Automation Liqui-Flo 1.5 General Purpose and Vector Duty User Manual

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LiquiFlo 1.5 AC Drive, Software Reference Version 1.2

Selects the source for DC Brake Level (158).

Defines the maximum DC brake current in percentage of drive rated current.

The DC braking voltage used in this function is created by a PWM algorithm and may
not generate the smooth holding force needed for some applications.

Sets the amount of time DC brake current is “injected” into the motor.

!

ATTENTION: The user must provide an external, hardwired emergency
stop circuit outside of the drive circuitry. This circuit must disable the
system in case of improper operation. Uncontrolled machine operation
may result if this procedure is not followed. Failure to observe this
precaution could result in bodily injury.

157

DC Brake Lvl Sel

Range:

0 = DC Brake Lvl
1 = Analog In 1
2 = Analog In 2

Default:

0 = DC Brake Lvl

Access:

0

Path: Dynamic Control>Stop/Brake Modes

See also:

155, 156, 158, 159

158

DC Brake Level

Range:

0 to (Rated Amps x 1.5) [0.1 Amps]

Default:

Rated Amps

Access:

0

Path: Dynamic Control>Stop/Brake Modes

See also:

157-159

!

ATTENTION: If a hazard of injury due to movement of equipment or
material exists, an auxiliary mechanical braking device must be used to
stop the motor. Failure to observe this precaution could result in severe
bodily injury or loss of life.

ATTENTION: This feature should not be used with synchronous or
permanent magnet motors. Motors may be demagnetized during braking.
Failure to observe this precaution could result in damage to, or
destruction of, the equipment.

159

DC Brake Time

Range:

0.0 to 90.0 sec [0.1 sec]

Default:

0.0 sec

Access:

0

Path: Dynamic Control>Stop/Brake Modes

See also:

155 - 158

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