Content Preview
TB109 Rev1 TOKO Cable Problem
Overview
This document describes a problem that may occur on older Centroid controls that use the Toko brand drive
logic power supply and have connectors on both ends of the cable Not soldered to the power supply
Problem
Customer complains of jerky axis movement While jogging homing or running a program the axis
momentarily stops and then rapids a short distance to "catch up" to the position that it "should" be at This
problem will also produce an occasional "411_axis full power without motion error" on all axes The problem is
usually intermittent and seems to go away for a short time when you turn the power off and on
Cause of the Problem
The cause of the problem is a bad connection at either end of the supply cable running from the TOKO power
supply to the servo drive Over time the connection develops oxidation which inhibits a good connection
Solution
Remove and reseat cable at both ends make sure that none of the pins are pushed out of place on the
connector Before reseating the cable you should clean any oxidation off of the header connector pins
Another solution would be to eliminate the connector by soldering the wires directly to the TOKO
Document History
Rev1 Created on 2000 11 27