Altivar® 58 TRX AC Drives

Assignment of Logic Outputs (R2 or LOx)

Current Level Attained

The logic output is high (state 1, 24 Vdc nominal) if the motor current is greater than or equal to the configured current level. The current level is factory set at 136% and has an adjustable range of 25 to 136% of the drive controller’s constant torque rating.

Motor Thermal Level Attained

The logic output is high (state 1, 24 Vdc nominal) if the motor thermal state is greater than or equal to the configured motor thermal level. The motor thermal level is factory set at 100% and has an adjustable range of 0 to 118%.

Drive Thermal Level Attained

The logic output is high (state 1, 24 Vdc nominal) if the drive thermal state is greater than or equal to the configured drive thermal level. The drive thermal level is factory set at 105% and has an adjustable range of 0–118%

Loss of Follower (4–20 mA Signal)

NOTE: Unlike the previous assignments, which may be assigned to either relay R2 or one of the logic outputs

The logic output is high (state 1, 24 Vdc nominal) if the signal on the 4–20 mA speed reference input is less than 2 mA.

Brake Logic Command

This is a set of parameters that allows control of a mechanical brake by the drive controller.

The brake release is determined by brake release frequency, brake release current threshold, and brake release time delay. The brake engage is determined by the brake engage frequency and brake engage time.

(LOx), Brake Logic Command can only be assigned to relay R2.

Motor Speed

Brake state 1

0

R2 relay

1

0

Reference

BrakeCom.eps

 

Motor current

Ibr

Motor frequency

brL bEn

Increasing or decreasing 1

0

T

brt

bEt

T = non-adjustable delay

Parameters accessible in the Adjust menu:

Brake release frequency (brL).

Brake release current (Ibr).

Brake release time (brt).

Brake engage frequency (bEn).

Brake engage time (bEt).

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© 2000–2003 Schneider Electric All Rights Reserved

 

09/2003

 

 

 

 

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Image 62
Schneider Electric 58 TRX manual Current Level Attained, Motor Thermal Level Attained, Drive Thermal Level Attained