Schneider Electric 58 TRX manual Assignment of Analog Outputs AOx

Max.	AnOutGraf.eps
Min.

0 mA	20 mA
4 mA	20 mA
Minimum	Maximum

Analog Output

Ranges

Altivar® 58 TRX AC Drives

Assignment of Analog Outputs (AOx)

ASSIGNMENT OF ANALOG OUTPUTS (AOx)

The following sections describe the possible assignments of the Analog Outputs (AOx) on the drive controller and on the optional Extension Cards. The analog output is a current output. The minimum and maximum values are configurable, with a range of 0-20 mA, as shown in the graph to the left.

Motor Current

When configured for motor current, the analog output provides a signal proportional to motor current. The minimum configured value corresponds to zero, while the maximum configured value of the analog output corresponds to 200% of the drive controller’s constant-torque rating.

Output Frequency

When configured for output frequency, the analog output provides a signal proportional to motor frequency estimated by the drive controller. The minimum configured value corresponds to zero, while the maximum configured value of the analog output corresponds to the maximum frequency setting, not the high speed setting.

Ramp Output

When configured for ramp output, the analog output provides a signal proportional to the frequency the drive controller is commanding the motor to run. The minimum configured value corresponds to zero, while the maximum configured value of the analog output corresponds to the maximum frequency setting, not the high speed setting.

Motor Torque

When configured for motor torque, the analog output provides a signal proportional to motor torque as an absolute value. The minimum configured value corresponds to zero, while the maximum configured value of the analog output corresponds to 200% of the nominal motor torque.

Signed Motor Torque

When configured for signed motor torque, the analog output provides a signal proportional to motor torque and provides an indication of braking torque or motoring torque. The minimum configured value corresponds to 200% of the braking torque, while the maximum value of the analog output corresponds to 200% of the nominal motor torque. Zero torque corresponds to the average torque value ([minimum value + maximum value] divided by 2).

Signed Ramp

When configured for signed ramp output, the analog output provides a signal proportional to the frequency the drive controller is commanding the motor to run in the reverse or forward direction. Zero frequency corresponds to:

(minimum value + maximum value) / 2.

The minimum configured value corresponds to the maximum frequency in the reverse direction, while the maximum configured value corresponds to the maximum frequency in the forward direction.

PI Setpoint

When configured for PI setpoint, the analog output provides a signal proportional to the PI setpoint being provided to the drive controller. The minimum configured value corresponds to the minimum setpoint, while the maximum configured value corresponds to the maximum setpoint.

PI Feedback

When configured for PI feedback, the analog output provides a signal proportional to the PI feedback being provided to the drive controller. The minimum configured value corresponds to the minimum feedback, while the maximum configured value corresponds to the maximum feedback.

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