6-13 System Setup and Diagnostics
Diagnostic Checklists
Trio Motion Technology
Diagnostic Checklists
Problem Potential reasons
No Status LEDs on any mod-
ule
• Power Supply
LEDs lit on Master but not
on other modules
• Ribbon cable / Bank select switch
OK LED ON &
Status LED flashing
• Following error on at least one axis. The axis
demand position and measured position
exceed the programmed limit
Motor runs away without
issuing a move command
•tacho/drive polarity
• encoder/controller polarity
• gains (drive and/or controller)
Motor runs away upon issu-
ing a move command
• tacho feedback
• encoder feedback
• gains (drive and/or controller)
Motor does not move upon
issuing a move command
• wiring (enables/inhibits/limits on drive and
controller)
• check status on all axes
•drive power
• feedhold applied
• speed, acceleration and/or deceleration set to
zero
• servo set off/watchdog set off
• gains (drive and/or controller)
• axis is already running a move which has not
completed - Check MTYPE and NTYPE
Axis goes out on following
error after a time
• speed being requested requires more than 10v
- check drive tacho gain and motor/ drive
speed characteristics.
• drive shutting down on current limit after a
time
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