Thanks electricuwe the devil is in the details. The nine motor leads terminate at 3 terminal blocks in control panel. The six contactors control the motor.
C3(contactor)C5 STARTING
C4,C6 ACCELERATING
C1,C5,C6 RUNNING
C3,C5 BRAKING
Motor leads continuity below.
T7-T8-T9.
T1-T4.
T3-T6.
T2-T5...
Hello,
Voltage was o.k but when checking continuity I found 2 motor leads that were terminated at starter panel reversed .
On the bright side I am able to get motor to spin when start button is pushed but only the first 2 contactors close (Starting) the prox that is detecting rpm is...
I have a few details 480volt, 3phase, 9 lead motor with all nine leads terminating at 3 contactors.
DOL line starting energizes 2 contactors
they time out/drop out and 2 contactors accelerate motor after motor reaches speed 2 contactors close running motor at speed.
I have been told motor...
I have used the following website for all my wiha and knipex tools. http://chadstoolbox.com/
Fluke makes a great Digital volt meter for general troubleshooting ,checking fuses and current less than 100 amps.
http://us.fluke.com/usen/products/Fluke++T5.htm
I love Wiha hand tools in my humble...
I have inherited a motor with a nameplate marked
Y/YY
460v
30/93A
I am not familiar with Y/YY on nameplate and also not sure why different amperage ratings with only one voltage rating any insight would be appreciated.
Thanks in advance for any replies. If...
I have seen lots of wirenuts fail and in my experience water and other conductive materials fit nicely right next to the conductors.
On a different note I have seen contactors,lugs and just about everything else that a wire can terminate to fail because someone hasn't stripped the insulation...
What effect could having multiple loads in the same raceway have on the measured current?
Could I expect the measured current to be lower if wiring to loads was physically seperated?
I have a panel with 13 motor starters in it motor nameplate
FLA-24A but most motors are drawing between...
If I have a motor 150' away from the contactor controlling it and I measure current at the peckerhead and then take a second measurement at the contactor assuming no change in load and regardless of wiring methods should the measurements be identical?
Is it relevant where you measure current in...
Thanks to all who have responded.
Currently the stall parameter is disabled and the input voltage parameter is set to 500volts.
So far only 1 fault on overload 3rd shift on Wednesday and no faults over the weekend.
The wiring from the analog ouput at the plc is shielded cable in its own conduit (18 gauge) less than 50 foot away from drive. The HMI communicates with the plc via ethernet.
