9 Pegasus Astro – Copyright 2016
Troubleshooting guide
Problem
Cause
Cure
Controller LED is off
Power supply is not
connected
Connect Power and wait for three
green light blinks (Controller Boot)
Stepper motor does not move
Check if mode is in “stepper
motor” setting
Set mode to “stepper motor” setting
and retry
DC motor does not move
Check if mode is in “dc
motor” setting
Set mode to “dc motor” setting and
retry
Mode is in stepper but stepper
motor does not move
Motor speed is very low or
zero
Go to settings in software and set
max speed of motor (try to set 400-
500 steps).
Stepper motor makes strange
noises
Motor has been connected
with wrong cabling or a cable
has been disconnected / cut
(stepper motor requires 4
cables)
Check cable order is correct and
retry or replace serial cable
Stepper motor makes strange
noises or step gaps when
accelerates
You have specified a “max
speed” larger than motor can
support
Go to “Settings” and limit the max
speed (try between 400-600).
Every stepper motor has a
maximum speed or else it will jump
and loose steps. Pegasus Astro
Stepper Motor support max speed
up to 500.
Knob on the side does not
work
Check that LED is not orange
colored. This means you have
disabled the knob encoder
functionality
Press the knob to enable the
encoder. The led light will turn
yellow or green
Sensor does not report
temperature
Check that sensor is in place
Check connectivity of the sensor.
Recycle power and retry or wait for
1-3 minutes for sensor
recalibration.
Controller randomly looses
USB connectivity
Check that your USB cable
does not exceed 5m length.
Use a shorter cable or a powered
USB hub. The USB 2.0
specification limits the length of a
cable between USB 2.0 devices
(Full Speed or Hi-Speed) to 5
meters.
Software installation
Latest software and drivers release can be found at Pegasus Support site:
http://pegasusastro.com/support
