Schneider Electric ALTIVAR 58 TRX Installationsanleitung PDF herunterladen (Seite 81)

VVDED397047USR6/03 Chapter 2—Menus

06/2003 5—I/O Menu

• Acceleration/deceleration time:

It is advisable to set the acceleration and deceleration ramps to

more than 0.5 seconds. Ensure that the drive controller does not

exceed the current limit. A braking resistor should be used on

overhauling loads.

• Brake release time (brt):

Adjust according to the time required for the mechanical brake to

open.

• Brake engage frequency (bEN):

Set to twice the nominal slip (in the example above 2 x 0.0466 =

0.0932 Hz). Then adjust according to observed results.

• Brake engage time (bEt):

Adjust according to the time required for the mechanical brake to

close.

Loss of 4–20 mA Signal (APL)

The logic output is at state 1 if the signal on the 4–20 mA speed

reference input is less than 2 mA.

Frequency Threshold 2 Attained (F2A)

The logic output is at state 1 if the motor frequency is greater than or

equal to the frequency threshold set by the F2d parameter in the

2—Adjust menu.

Drive Thermal Threshold Attained (tAd)

The logic output is at state 1 if the drive thermal state meets or

exceeds the thermal threshold set by the dtd parameter in the

2—Adjust menu.

Using the Analog Outputs

The analog outputs on the drive controller and on the Analog I/O and

Digital I/O extension cards are current outputs. The minimum and

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Schneider Electric ALTIVAR 58 TRX Installationsanleitung Seite 81