Schneider Electric 58 TRX - page 62

Altivar® 58 TRX AC Drives
Assignment of Logic Outputs (R2 or LOx)
© 2000–2003 Schneider Electric All Rights Reserved
62 09/2003
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 a djustab le
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 dr ive thermal level is factory set at 105% and has an adjustable
range of 0–118%
Loss of Follower (4–20 mA Signal)
The logic output is high (state 1, 24 Vdc nominal) if the signal on the 4–20 mA speed referen ce inp ut 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 fr equency, brake release current threshold, and brake
release time delay. The brake e ngage is det ermined b y the br ak e e ngage frequen cy an d br ak e e ngage
time.
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).
NOTE:Unlike the
previous
assignments, which
may be assigned to
either relay R2 or one
of the logic outputs
(LOx), Brake Logic
Command can only
be assigned to relay
R2.
Reference
Brake state
R2 relay
Motor current
Motor frequency
bEn
Ibr
brL
brt
T bEt
Motor Speed
Increasing or decreasing
1
0
1
0
1
0
T = non-adjustable delay
BrakeCom.eps