SEW 12 wire motor

Sorry, Not PLC related, but there is a lot of kowledge here. Over the weekend a mechanic had to replace a burnt motor, the replacement was a 12 wire for a 6 wire. once replace the motor would only run slow, the VFD was showing 10Hz vs the normal 70Hz.
the new motor was a "Motor voltage [V] / conn. type: 230/460 double delta/delta" The VFD supplies 460v

The motor was provided with 6 jumper bars and 3 jumper leads (they did not use the leads)

they had it connected like this:

7----4 10----3->L1
9----6 12----2->L2
8----5 11----1->L3

Ohming it out today, it looks like it should be connected like this:
7---4 1---12->L1
9---6 3---11->L2
8---5 2---10->L3
this would make a true delta configuration.

where am i going wrong?

http://www.usmotors.com/TechDocs/ProFacts/Typical-3ph-Connections/YStart-DeltaRun-12Leads.aspx

Check this site it might help

See attached file.

This is my bible for motor connections:

The original motor was a 1 stage run connected to a VFD. Are you saying this motor is for a 2 stage starter? Or can i connect for single stage run from the VFD?

more info from the SEW Android app...


Technical data

01.1723046201.0001.11
AC motor
DRP180LC4/FI/V
Mounting position: B3
Construction Date: 2011


CE mark: X 1 DRP
motor speed [r/min]: 1780
Mounting position: B3
Motor-voltage [V]: 230/460
Connection type: 003
Design confirmation: CO_DESIGN_ST 0 0
motor speed [r/min]: 1780
Motor power [kW]: 22
Motor frequency [Hz]: 60
Cyclic duration factor S1-S10: S1
Motor voltage [V] / conn. type: 230/460 double delta/delta
Rated current [A]: 69,00 / 34,50
cos phi: 0,86
Thermal cl.[°C]/Enclosure[IP]: 155(F) / 55
International efficiency class: IE3
Efficiency (100% Pn) [%]: 93,6
Design requirements: USA (UR) /Canada (CSA)
K.V.A.code: K
Design: NEMA C starting torque
Ambient temperature min. [°C]: -20
Ambient temperature max. [°C]: 40
Nameplate (sets per unit): 1 set of nameplates
Nameplate: English / Laser stainless steel
Nameplate text input: 1 line for US no.
Part number 1st nameplate: 01885723
Nameplate text: 108338 KAMAN
Max. temperature (unit): +40

PER SEW-
the motor should have ran the way it was wired
7----4 10----3->L1
9----6 12----2->L2
8----5 11----1->L3
they said i need to adjust the power factor and eff on the powerflex 70.

does this make sense to anyone?

I agree that it looked like wiring was correct (according to the SEW documentation I could find) and the fact that your VFD said 10Hz sounds like VFD parameters are off.

danatomega said:

I agree that it looked like wiring was correct and the fact that your VFD said 10Hz sounds like VFD parameters are off.

Click to expand...

which parameters, looking at the powerflex manual i dont see the PF and EFF the SEW rep spoke of. They may be available in a MoviDrive but not on the A-B???

I would try an auto-tuning procedure (see parameter 61 in the user manual) - rotating if possible (with load disconnected) but you could also select a non-rotating auto-tune.
You're correct that PF and EFF don't seem to be available parameters.

thanks Danatomega!