Delta VFD-B Series

Chapter 5 Parameters|VFD-B-P Series
Revision April 2009, SW V1.00 5-99
10 - 08
Feedback Signal Detection Time
Unit: 0.1
Settings 0.0 to d 3600.0 sec Factory Setting: 60.0
 This parameter defines the time during which the PID feedback must be abnormal before a
warning (see Pr.10-09) is given. It also can be modified according to the system feedback
signal time.
 If this parameter is set to 0.0, the system would not detect any abnormality signal.
10 - 09 Treatment of the Erroneous Feedback Signals (for PID and PG feedback error)
Factory Setting: 00
Settings 00 Warning and keep operating
01 Warning and RAMP to stop
02 Warning and COAST to stop
 AC motor drive action when the feedback signals (analog PID feedback or PG (encoder)
feedback) are abnormal according to Pr.10-16.
10 - 16 Deviation Range of PID Feedback Signal Error Unit: 0.01
Settings 0.00~100.00% Factory Setting: 100.00
 The base is Pr.01-00. When in PID feedback control, if | Source of PID reference target -
feedback | > Pr.10-16 and exceeds Pr.10-08 detection time, the AC drive will operate
according to Pr.10-09.
10 - 10 PG Pulse Range Unit: 1
Settings 1 ~ 40000 (Max=20000 for 2-pole motor) Factory Setting: 600
 A Pulse Generator (PG) or encoder is used as a sensor that provides a feedback signal of the
motor speed. This parameter defines the number of pulses for each cycle of the PG control.
 For PG or encoder feedback an option PG-card is needed.
10 - 11 PG Input
Factory Setting: 00
Settings 00 Disable PG
01 Single phase
02 Forward / Counterclockwise rotation
03 Reverse / Clockwise rotation
 The relationship between the motor rotation and PG input is illustrated below: