Suggestions for replacement controller

[KSHAFER]

I want to replace a c. 90 year-old [?] Allan-Bradley Type 1 (bulletin 709) non-reversing controller, which is being used to operate a 95 year-old (rebuilt) 3-phase 5HP Westinghouse induction motor. Looking for the lowest-cost replacement: either new or certified rebuilt. Any recommendations? Would a Square D, model 8536SCO3V03 Motor Starter work? (I see one online for $241.) I’ll wire it to the Start-Stop station like the current Allan-Bradley (L1 to Stop etc.; no transformer ).

 

[talvare]

That Square D starter will work fine, but note that it comes with a 240V coil. Is your control circuit 240V ? Also, you'll have to purchase the heaters sized for your motor.

Ted

 

[macardoso]

Contactors are expendable units and you can replace it with a new one from probably any manufacturer.

What you need to know is the motor FLA and the control voltage for the coil. A new Allen Bradley contactor, sized for the 11.4 FLA with 240VAC control voltage would be bulletin 100C contactors, catalog number 100-C16A10. This is rated for 16A to give you a bit of overhead.

IEC Standard Contactors | Allen-Bradley

Our Bulletin 100-C contactor line offers space-saving, high-performance design in 9...97 A contactors. These low power consumption contactors are designed to control motors and other loads.

www.rockwellautomation.com

You can also get a motor protective overload to snap on underneath which would protect the motor from overheating. This part number would be 193-1EEDB.

E100 Electronic Overload Relays | Allen-Bradley

Our E100 Electronic Overload Relays are the next generation basic-tier electronic overload relay. These relays include enhanced features to better safeguard your motor protection investments.

www.rockwellautomation.com

I'll add that your original schematic does show a motor overload, so installing one would be appropriate.

Manufactured by - ALLEN BRADLEY

100-C16A10 Contactors & Starters from ALLEN BRADLEY In Stock, Order Now! Same Day Shipping, 2-Year Warranty - DISCONTINUED BY MANUFACTURER 12/31/2021, CONTACTOR, 16 AMP, 240V 60 HZ, AC, 3 NORMALLY OPEN POLES, 240V AC 60 HZ, 1 NO CONTACTS & 0 NC CONTACTS, SINGLE PACK, LINE SIDE COIL TERMINATION...

www.radwell.com

Allen-Bradley 193-1EEDB IEC Overload Relay, Electronic, Selectable Trip Class 10 20, Manual Reset, 3.2 16.0 A, 1 Normally Open Contact and 1 Normally Closed Contact, Mounts to 100 C09 to 100 C23 Contactor | SMC

Allen-Bradley 193-1EEDB IEC Overload Relay, Electronic, Selectable Trip Class 10 20, Manual Reset, 3.2 16.0 A, 1 Normally Open Contact and 1 Normally Closed Contact, Mounts to 100 C09 to 100 C23 Contactor

www.smcelectric.com