Content Preview
Fix for Intermittent Spindle Errors on Delta VFD VE Inverters
Purpose
 This document was created after finding the source of intermittent spindle or orient faults on a machine with a Delta VFD VE
inverter with an orient card  If you are randomly getting Y contactor switching errors PFG1 errors or orient errors follow the
instructions below to fix your problem
Required Tools & Materials
Philips No 1 & 2 screw drivers
pair of pliers
3x 4 40 x 3/8 screws or equivalent
3x nylon washers
cable ties
Source of the Problem Â
The screws used to secure the Delta orient card PG01L/PG02L to the main board of the inverter are the
wrong size too small  This results in the orient card not being securely held in place which leads to a poor connection between the
orient card and the main board and then causes the random spindle and orient errors  The solution is to mount the card securely with
larger screws so it makes good contact with the main inverter board permanently
Instructions
1 Â Remove the main inverter cover to gain access to the inverter main board and orient card
2 Â Remove the 3 small philips screws that are supposed to secure the orient card to the main board
3  Remove the 3 plastic standoffs from the main board  To do this remove the 4 philips screws at the 4 corners of the main board  With
the pliers squeeze the tabs on the standoffs together and push them back through the main board
Picture 1 Plastic Standoffs for Orient card
4 Â With the standoff's removed re install the main board
5 Â Now with your 4 40x3/8 screws or whatever you have that threads into the standoffs properly place a nylon washer against the
head of the screw and thread the screw into the standoff  Repeat this step for the other standoffs
Picture 2 Sideview of standoffs mounted to Orient card
6 Â Once all 3 standoffs are mounted to the Orient card re install the card onto the main inverter board
7 Â We have found in some cases even remounting the standoffs is not sufficient to secure the orient card due to the locations of the
standoffs in relation to the connector that plugs into the inverter main board being so far apart
8 Â In order to make sure the orient card connection doesn't come loose slide one cable tie under the main board then connect a
second one to the ends of the first one under the inverter main board  Pull both ends until the cable tie is firmly pressing down on the
orient card above the connector  See picture below
Picture 3 PG 02L Orient card with cable ties installed to hold connector firmly against inverter main board
Â
Â
Â
Â
Document History
Rev1 Created on 2012 08 09
by #240