March 1, 2014Jeff Kordik

Introducing theSTM17R and STM23RIntegrated Step Drive+Motor

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Available for sale now on our website.

Introducing the STMR

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Features

The STMR is like having one of our popular STR drives built into the back of a motor. Features:

Step Direction or Step CW + Step CCW 16 step resolutions Step Noise Filter eliminate incoming electrical noise Step Smoothing Filter makes full & half step smooth 50% or 90% idle current to reduce heating & save power 50%, 70%, 90% or 100% running current Load Inertia: High or Low Self Test

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Model Numbering

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Models

STM17R-3NNSTM17R-3NDSTM17R-3NE

STM23R-2NNSTM23R-2NDSTM23R-2NESTM23R-3NNSTM23R-3NDSTM23R-3NE

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Features

Same torque as STM-S/Q

STM17R 68 oz-inSTM23R-2 125 oz-inSTM23R-3 210 oz-in

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Literature

Literature, available on our website: STM17R Hardware Manual STM23R Hardware Manual STM17R Quick Setup Guide STM23R Quick Setup Guide STM Family Datasheet - Covers all STM models and

frame sizes

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Wiring

STM17R: Insulation displacement connector Mating cable included

STM23R: pluggable screw terminal connector

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Wiring

Inputs (5-24 volts) STEP+ STEP- DIR+ DIR- EN+ EN-

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Wiring

Fault Output (30 volts max) OUT+ OUT-

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Wiring

Power Supply STM17R: 12 to 48 VDC STM23R: 12 to 70 VDC

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Optional Encoder

1000 lines + index Differential outputs Mating cable with flying leads:

3004-263 Encoder connects to motion

controller, not to the STMR For advanced features like stall

prevention, please consider the STM17S

For stored programming capability, choose the STM17Q

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Setup

Two Banks of DIP Switches

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Setup

Steps/rev Setting this higher will make

the motor run more smoothly

and position more precisely.

But you’ll need a high frequency pulse source to get the same shaft speed.

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Setup

Step Pulse TypeIf the motor only turns one way, this setting may

be wrong

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Setup

Step SmoothingIf the STMR is set for 200 or 400 steps/rev, it may make extra noise or run roughly. Turning on step smoothing will fix that.

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Setup

Step Noise Filter If the motor is not positioning accurately, try the 150 kHz setting.If you can’t command a high enough speed, try the 2.0 MHz setting.

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Setup

Current Fine Tuning Reducing the motor current • saves power • reduces motor temperature• lowers audible noise

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Setup

Idle Current50% idle current will save power and reduce motor temperature.90% is useful if you need to support a vertical load.

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Setup

Load Inertia

If the motor is running poorly, this

setting might be wrong.

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Setup

Self Test

If the motor won’t spin, try the self test. If it still won’t turn, your load might be jammed. If it does spin under self test but not from your pulse source, there might be a problem with your pulse source or the wiring.