Schneider Electric ALTIVAR 58 TRX Instalační příručka stáhnout pdf (Strana 71)

VVDED397047USR6/03 Chapter 2—Menus

06/2003 5—I/O Menu

Fast Stop

Fast stop is a braked stop with the deceleration ramp time reduced by

a programmable coefficient (see dCF on page 48). Fast stop is

obtained by opening the logic input assigned to the function (setting it

to state 0), or by configuring fast stop (Fst: Fast Stop) under type of

stop (Stt on page 47).

Motor Switching

This function allows a single drive controller to control two motors with

different power ratings, one at a time. The ratio between the motor

power ratings is set with the PCC parameter in the 3

—Drive menu

(see page 49).

If the two motors have different power ratings, enclosure types, or

speed ratings, then separate motor contactors, thermal protection,

and short circuit protection will be required for each motor. This

function automatically inhibits motor thermal protection of the

second motor.

The motor switching command will not be taken into account unless

the motor is stopped. If the output contactor opens while the motor is

running, the drive controller may trip on overcurrent or overvoltage

which may result in damage to the drive controller. The following

WARNING

EXTENDED STOPPING TIME

• Deceleration time during fast stop may be automatically

extended depending on the braking ability of the drive controller.

• A dynamic brake or mechanical stopping/holding brake may be

required for consistent stopping times independent of motor load

conditions.

• Fast stop does not function during loss of power or drive

controller fault.

Failure to follow these instructions can result in death, serious

injury, or equipment damage.

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Schneider Electric ALTIVAR 58 TRX Instalační příručka Strana 71