Schneider Electric Altivar 58 VW3-A58101 Manual de usuario descargar pdf (Pagina 65)

VVDED397047US R8/01 ALTIVAR

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58 Keypad Display

08/01 Chapter 2 — Menus

PID Regulator

This function is used to regulate a process with a setpoint input and a

feedback signal from the process. This function is enabled by assigning

an analog input (AI) to PID feedback in the 5—I/O menu. This function is

available after enabling the Variable Torque Macro and ensuring that the

RFC: Auto/man parameter is not assigned to a logic input. The

acceleration (ACC) and deceleration (dEC) ramps default to linear ramp

type even if the ramps had been configured for S ramp or U ramp with the

rPt parameter.

The PID regulator can be used with a logic input configured for Auto /

Manual mode of operation (also referred to as Reference Switching)

when the Analog option card is used. (Catalog number VW3A58201U)

When the PID regulator is configured and a logic input is configured for

PAU: PID Auto/man, the PID regulator function is active in Auto mode and

AI3 is used for speed input in manual mode.

Logic inputs can be used with the PID regulator to command the drive

controller to run from the analog reference, run at process maximum, or

operate with two other definable pre-set setpoints. The configurable

setpoints can be use to provide two different setpoints for two different

processes, or they can be used in place of using AI1 for setpoint input.

For example, providing a setpoint via the logic inputs can eliminate the

need for a potentiometer.

Four analog outputs are available to monitor various aspects of the PID

regulator function. See pages 73–74 for more information.

Figure 18 shows a diagram of the PID Regulator inputs, calculation

points, and outputs.

Table 20 on page 67 provides a description of the inputs to the PID

Regulator.

PID setpoint OPS PID feedback OPF

PID error OPE PID integral error OPI

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 111 112

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Schneider Electric Altivar 58 VW3-A58101 Manual de usuario Pagina 65