ABB RDNA-01 Uživatelský manuál stáhnout pdf (Strana 177)

ACS550-01/U1 User’s Manual 177

Parameters

Group 50: ENCODER

This group defines the setup for encoder use:

• Sets the number of encoder pulses per shaft revolution.

• Enables the encoder operation.

• Defines how mechanical angle and revolution data is reset.

See also User’s Manual for Pulse Encoder Interface Module OTAC-01

(3AUA0000001938 [English]).

Code Description

5001 PULSE NR

Sets the number of pulses provided by an optional encoder for each full motor shaft revolution (ppr).

5002 ENCODER ENABLE

Enables/disables an optional encoder.

0 =

DISABLE – Drive uses speed feedback derived from the internal motor model (applies for any setting of parameter

9904

MOTOR CTRL MODE).

1 =

ENABLE – Drive uses feedback from an optional encoder. This function requires the Pulse Encoder Interface

Module (OTAC-01) and an encoder. Operation depends on the setting of parameter 9904

MOTOR CTRL MODE:

• 9904 = 1 (

VECTOR:SPEED): The encoder provides improved speed feedback and improved low speed torque

accuracy.

• 9904 = 2 (VECTOR:TORQ): The encoder provides improved speed feedback and improved low speed torque

accuracy.

• 9904 = 3 (SCALAR:SPEED): The encoder provides speed feedback. (This is not closed loop speed regulation.

However, using parameter 2608

SLIP COMP RATIO and an encoder improves steady state speed accuracy.)

5003 ENCODER FAULT

Defines the drive operation if a failure is detected in communication between the encoder and the encoder interface

module, or between the module and the drive.

1 =

FAULT – The drive generates fault ENCODER ERR, and the motor coasts to a stop.

2 =

ALARM – The drive generates alarm ENCODER ERR and operates as if parameter 5002 ENCODER ENABLE =

DISABLE), that is, speed feedback is derived from the internal motor model.

5010 Z PLS ENABLE

Enables/disables the use of an encoder’s Z-pulse to define the motor shaft’s zero position. When enabled, a Z-pulse

input resets parameter 0146 MECH ANGLE to zero to define the shaft’s zero position. This function requires an encoder

that provides Z-pulse signals.

0 =

DISABLE – Z-pulse input is not present or ignored if present.

1 =

ENABLE – A Z-pulse input resets parameter 0146 MECH ANGLE to zero.

5011 POSITION RESET

Resets the encoder’s position feedback. This parameter is self-clearing.

0 = DISABLE – Inactive.

1 =

ENABLE – Resets the encoder position feedback. Parameters reset depends on the state of parameter 5010 Z PLS

ENABLE:

• 5010 = 0 (

DISABLE) – Reset applies to parameters 0147 MECH REVS and 0146 MECH ANGLE.

• 5010 = 1 (

ENABLE) – Reset applies only to parameter 0147 MECH REVS.

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