Table 4-4 Inverter Control Board Level 1 Parameter Definitions - Continued

Block Title

Parameter

Description

 

 

 

 

OUTPUT

Analog Output

Two Analog 0-5VDC linear outputs may be configured to represent any of 19 conditions

(Continued)

#1 and #2

 

as follows:

 

 

Condition

Description

 

 

ABS Speed - Represents the absolute motor speed where 0VDC = 0 RPM and

 

 

 

+5VDC = MAX RPM.

 

 

ABS Torque -

Represents the absolute value of torque where

 

 

 

+5VDC = Torque at CURRENT LIMIT.

 

 

Speed Command - Represents the absolute value of commanded speed where

 

 

 

+5VDC = MAX RPM.

 

 

PWM Voltage - Represents the amplitude of PWM voltage where

 

 

 

+5VDC = MAX AC Voltage.

 

 

Flux Current -

Represents the actual portion of total current used for excitation.

 

 

 

5VDC= MAX flux current.

 

 

CMD Flux CUR - Represents the calculated value for flux current.

 

 

 

5VDC= MAX commanded flux current.

 

 

Load Current -

Represents the actual portion of total current used to produce torque

 

 

 

(CW and CCW torque).

 

 

 

5V = Max. CW torque, 0V = Max. CCW torque.

 

 

CMD Load Current - Represents the calculated value of load current.

 

 

 

5V = Max. commanded load current.

 

 

Motor Current - Amplitude of continuous current including motor excitation current.

 

 

 

5VDC = Rated Current.

 

 

Load Component - Amplitude of load current not including the motor excitation

 

 

 

current. 5VDC = Rated Current.

 

 

Quad Voltage -

Load controller output. Used to diagnose control problems.

 

 

Direct Voltage - Flux controller output. Used to diagnose control problems.

 

 

AC Voltage - A scaled AC waveform that represents the AC line to line motor

 

 

 

terminal voltage. 0V = Neg Peak PWM voltage. 2.5V centered.

 

 

 

5V = Pos Peak PWM voltage. At rated motor voltage, a full 0 to 5V

 

 

 

sinusoidal waveform should be present. This waveform should be at

 

 

 

or greater than the motor base frequency. (At half the motor base

 

 

 

frequency, a 1.25V to 3.75 sine wave is present.)

 

 

Bus Voltage -

Bus voltage scaled to 0-5VDC. 5V = 1000VDC.

 

 

Torque -

Bipolar torque output. 2.5V centered, 5V = Max Positive Torque,

 

 

 

0V = Max negative torque.

 

 

Power -

Bipolar power output. 2.5V = Zero Power, 0V = negative rated peak

 

 

 

power, +5V = Positive rated peak power.

 

 

Velocity -

Represents motor speed scaled to 0V = negative max RPM,

 

 

 

+2.5V = Zero Speed, +5V = positive max RPM.

 

 

Overload -

(Accumulated current)2 x (time), Overload occurs at +5V.

 

 

PH 2 Current -

Sampled AC phase 2 motor current. 2.5V = zero amps,

 

 

 

0V = negative rated peak amps, +5V = positive rated peak amps.

 

 

PH 3 Current -

Sampled AC phase 1 motor current. 2.5V = zero amps,

 

 

 

0V = negative rated peak amps, +5V = positive rated peak amps.

 

 

Process Feedback - Represents the selected Process Feedback signal.

 

 

 

2.5V centered, 5V = 100%, 0V = –100%.

 

 

Setpoint Command - Represents the selected Setpoint Command signal.

 

 

 

2.5V centered, 5V = 100%, 0V = –100%.

 

 

Position -

Position within a single revolution. +5V = 1 complete revolution.

 

 

 

The counter will reset to 0 every revolution.

 

 

Serial –

0–5VDC level that indicates a value programmed by a serial

 

 

 

command.

 

Analog #1 Scale &

Scale factor for the Analog Output voltage. Useful to set the zero value or full scale

 

Analog #2 Scale

range for external meters.

 

Position Band

Sets the acceptable range in digital counts (pulses) at which the AT Position Opto

 

 

becomes active (turns on).

 

 

 

 

4-16 Programming & Operation

MN722

Page 63
Image 63
Baldor mn722 manual Output, +5VDC = MAX RPM