LEESON Micro Series Compact Inverters User Manual

Page 23

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The following describes the possible relay output settings:

NONE

This setting disables the relay output .

RUN

The relay energizes when the drive is given a START command, and remains

energized until: a STOP command is given and the output frequency has

decelerated to 0.5 Hz, the drive has “tripped”, or the input voltage is removed.

Note that this relay indicates only that the drive is in the RUN mode . It does not

necessarily indicate that the motor is turning .

FAULT

The relay energizes when input voltage is applied to the drive and remains

energized until the drive “trips” into a fault condition, or input voltage is removed.

/FAULT

INVERSE FAULT - The relay energizes when the drive trips into a fault

condition, and remains energized until the fault condition is cleared.

LOCK

FAULT LOCKOUT - This relay is used when the drive is programmed to

automatically restart after a fault. The relay energizes when input voltage is applied

to the drive and remains energized until the drive has faulted and unsuccessfully

attempted five restarts, or input voltage is removed .

@SPEED

AT SPEED - The relay energizes when the drive reaches the commanded

frequency. To avoid a “chattering” relay (constantly energizing and de-energizing),

due to small fluctuations in speed . the relay will change states only when the

actual speed and the speed set point differ by 3 Hz.

ABOVE #3

The relay energizes when the output frequency of the drive exceeds the value

corresponding to the SPEED #3 value, and de-energizes when the output

frequency returns to a value lower than the SPEED #3 value. See Parameter 3 -

SPEED #3 in Section 18 .0 - DESCRIPTION OF PARAMETERS .

I LIMIT

CURRENT LIMIT - The relay energizes when the drive is operating in

current limit. Once the current limit relay is energized, it remains energized for

a minimum of 500ms, regardless of whether the drive is still in current limit . At

the end of the 500ms interval, the relay will de-energize if the drive is no longer in

current limit . See Parameter 16 - CURRENT in Section 18 .0 - DESCRIPTION

OF PARAMETERS .

AUT/MAN

The relay energizes when the drive is in the AUTOMATIC mode, and

de-energizes in the MANUAL mode. Refer to Section 14.2.6 - SPEED

REFERENCE SELECTION .

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