gefran SIEIDrive AVy Series Quick Start Up Manual page 35

Motor accelerates immediately to maximum speed
Motor accelerates too slowly
Motor decelerates too slowly
Motor turns slowly, although reference value = Zero
Output voltage deviates strongly under load
Motor not supplying the maximum torque or maximum output power
- T current lim reduction selected via Torque reduct
The entered value for the number of encoder pulses is too high. Remedy: check the
parameters concerned (encoder 1 pulses) and set correct value.
A correction value reduces the main reference value. Remedy: check the configuration
With operation via the terminal strip: Speed base value parameter too low
Reference value set via terminals: Check whether the value varies from min. to
max. value. Potentiometer used for reference value setting: is there a 0V connec-
tion present?
Encoder not connected, or incorrectly connected or not supplied:
Select the Enc 1 speed parameter in the MONITOR \ Measurement \ Speed \ Speed
in rpm menu.
- With the regulator disabled turn the motor clockwise (viewed from the front of
the shaft). The value indicated must be positive.
- If the indicated value does not change or if random values are shown, check the
power supply and the cabling of the encoder.
- If the indicated value is negative, reverse the encoder connections. Exchange
channel A+ and A- or B+ and B-.
Ramp value incorrectly set
Motor running at max. current
- Motor overloaded
- Drive sized too small
- Incorrect V/f characteristics set
Ramp value incorrectly set
Minimum speed parameter selected
Interference due to unused analog input. Remedy: set unused analog inputs to OFF
Disconnect reference value on used analog input
- If drive now stands still, the effect is due to the cable resistance of the 0V cable.
- If the drive is still turning: carry out offset compensation of the analog input.
Set Offset input xx parameter so that the drive stands still.
The value for Rotor resistance is not correct. See section "Checking and maunual
tuning of rotor resistance for field oriented mode" in the AVy instruction book on CD.
The value for Magnetizing curr is less than required for the connected motor.
- The ratio Output voltage / Output frequency in the MONITOR / Measure-
ments menu should be approx equal to the ratio of Base voltage / Base
frequency
- Drive working at current limit
- Check whether the value for Full load curr in the CONFIGURATION menu is
—————— Quick Start up ——————
QS
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