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DC Speed Control, 90/180VDC, NEMA 4/12

Price $682.00 / each

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  • Item # 2M171
  • Mfr. Model # 2M171
  • UNSPSC # 39121510
  • Catalog Page # 344
  • Shipping Weight 4.75 lbs.
Country of Origin USACountry of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • ItemDC Speed Control
  • Shunt Wound Volts100/200VDC
  • Voltage Output90/180VDC
  • Input Voltage115/230VAC
  • EnclosureNEMA 4/12
  • HP @ Higher Volts1/4 to 2
  • HP @ Lower Volts1/8 to 1
  • Speed Range50:1
  • Speed Regulation+/-1% of Motor Base Speed
  • Current/Torque LimitAdjustable
  • Accepts Tach FeedbackYes
  • Dynamic BrakingYes
  • Linear AccelerationFixed 1 to 3 sec.
  • Linear DecelerationFixed 0.5 sec.
  • Power On LightYes
  • IR CompensationAdjustable
  • Mount TypeWall
  • Height9.5"
  • Depth5.5"
  • Width5"
  • Operating Temp.-10 Degrees to 45 Degrees C
  • External SwitchesOn/Off, Fwd./Rev.
  • For Use WithFor Packaging Equipment, Pumps, Fans, Blowers, Conveyors and Other Constant or Diminishing Torque
  • StandardscULus Listed
  • IncludesRun/Stop Switch, Built-in Transient and Surge Suppression
How can we improve our Technical Specifications?

Compliance and Restrictions

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Details

Featuring built-in transient and surge suppression, this control is for permanent magnet or shunt-wound DC motors and gearmotors. The solid-state speed control converts line voltage input to full-wave DC power on constant- or diminishing-torque applications.

Alternate Products


Rated 3 out of 5 by 2reviewers.
Rated 1 out of 5 by The speed regulation of this product was poor at best. I used it with Armature feedback and not with a tachometer. Almost no acceleration or deceleration time. At low speeds the product would surge 50% of the time. June 6, 2013
  • 2015-08-03T19:56:37.190-05:00
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Product Q&A

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Yes, I will email you a copy of that document. If you need additional documents please contact us at 1-800-Grainger. Thank you for using Grainger.com Ask & Answer.
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We have here in our plant 4 drives that I need to Repair or replace. There seems to be more versions of this drive and I have no paperwork to work from.
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Yes, I will email you a copy of that document. If you need additional documents please contact us at 1-800-Grainger. Thank you for using Grainger.com Ask & Answer.
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I have an older Dayton SCR speed controller, Model 2M171 in a non-NEMA housing. The FWD/REV switch is nearing the failure point. It seems to have an odd internal contact setup inside the switch which prevents me from using a standard replacement switch. Considering the high cost of replacing the complete unit, I would prefer to replace the switch only. Is a direct replacement available? If not, can I get the schematics or manual for the older style or perhaps a link to the manufacturer of the older unit?
7 months ago
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Answer: 
That switch is available. Our parts number for that switch is 347294. That switch has a specially designed feature that prevents accidental reversing which may cause damage to the control or the motor. Give us a call so we can get that replacement switch to you. 1-800-Grainger

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7 months ago
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Answer: 
The manual has been sent to you.

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It has been emailed to you.

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You should have the information that you requested already.

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I will email you a copy of the owners manual. Thank you for using Grainger.com Ask & Answer.
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2m171h is this the same as 2m171?

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Answer: 
Yes, it is the same just a different version number. That means that the vendor may have made some small change to the item but not a change significant enough that would affect or alter the function of the item.
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Where can I download the manual

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