SureStep STP-DRV-4035 Guida rapida

SureSteptM

Stp-DRV-4035

MicRoStepping DRiVe

Chapter

In This Chapter...

Features � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–2

Speciﬁcations � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–3

Typical Wiring Diagram � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–4

Connection and Adjustment Locations � � � � � � � � � � � � � � � � �3–4

Connecting the Motor� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–5

Connecting the Power Supply � � � � � � � � � � � � � � � � � � � � � � � � � � �3–6

Connecting the Logic � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–7

Using Logic That is Not 5 volt TTL Level � � � � � � � � � � � � � � � � � � �3–9

The Enable Input � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–9

Setting Phase Current� � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3–10

Current Setting Formula � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–10

Current Setting Table � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–11

Microstepping � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–12

Idle Current Reduction � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–13

Self Test � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3–13

Dimensions� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3–15

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

SureStepTM Stepping Systems User Manual

3–2 5th Ed., Rev. B 01/2019

Features

• Drives sizes 17 through 34 step motors

• Pulse width modulation, MOSFET 3 state switching amplifiers

• Phase current from 0.4 to 3.5 amps (switch selectable, 32 settings)

• Optically isolated step, direction and enable inputs

• Half, 1/5, 1/10, 1/50 step (switch selectable)

• Automatic 50% idle current reduction (can be switched off)

Block Diagram

Optical

Isolation

Step+

V+

V–

Step– A+

A–

B+

B–

Dir+

Dir–

Enable+

Enable–

Microstep

Sequencer

Current

0.4 to 3.5

A/Phase

Steps/Rev:

1/2, 1/5,

1/10 or 1/50

50% Idle

Current Reduction

Self Test

MOSFET

Amplifier

Logic Connections

from PLC or Indexer

Connections

to Bipolar

Step Motor

Connect to

Power Supply

(12 - 42 VDC)

STP-DRV-4035

SureStepTM Stepping Systems User Manual 3–3

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

5th Ed., Rev. B 01/2019

Specifications

Note: The STP-DRV-4035 Microstepping Drive works with 4, 6, and 8 lead bipolar step

motors. All AutomAtionDirect SureStep™ motors are four-lead bipolar step motors.

SureStep™ Microstepping Drives Specifications

Part Number STP-DRV-4035

Input Power

(with red Power On LED) 12-42 VDC (including ripple voltage)

Output Power Output current selectable from 0.4 to 3.5 Amps/phase motor current

(maximum output power is 140 W)

Current Controller Dual H-bridge Bipolar Chopper

(4-state 20 kHz PWM with MOSFET switches)

Input

Signals

Input Signal

Circuit

Opto-coupler input with 440 Ohm resistance (5 to 15 mA input current),

Logic Low is input pulled to 0.8 VDC or less, Logic High is input 4VDC or

higher (see page 3-9 for using input voltages higher than 5VDC)

Pulse Signal Motor steps on falling edge of pulse and minimum pulse width

is 0.5 microseconds

Direction

Signal

Needs to change at least 2 microseconds before a step pulse is sent. CW

and CCW are viewed from the end opposite the drive end of the motor

(looking out of the shaft).

Enable Signal Logic 1 will disable current to the motor

(current is enabled with no hook-up or logic 0)

DIP Switch

Selectable

Functions

Self Test Off or On (uses half-step to rotate 1/2 revolution in each direction

at 100 steps/second)

Microstepping 400 (200x2), 1,000 (200x5), 2,000 (200x10), or 10,000 (200x50) steps/rev

Idle Current

Reduction

0% or 50% reduction (idle current setting is active if motor is at rest

for 1 second or more)

Phase Current

Setting 0.4 to 3.5 Amps/phase with 32 selectable levels

Drive Cooling Method Natural convection (mount drive to metal surface if possible)

Dimensions 3 x 4 x 1.5 inches [76.2 x 101.6 x 38.1 mm]

Mounting Use #4 screws to mount on wide side (4 screws) or narrow side (2 screws)

Connectors Screw terminal blocks with AWG 18 maximum wire size

Weight 9.3 oz. [264g]

Storage Temperature -20–80 °C [-4–176 °F]

Chassis Operating

Temperature

0–55 °C [32–131 °F] recommended; 70 °C [158 °F] maximum

(use fan cooling if necessary); 90% non-condensing maximum humidity

Agency Approvals CE

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

SureStepTM Stepping Systems User Manual

3–4 5th Ed., Rev. B 01/2019

Typical Wiring Diagram

Connection and Adjustment Locations

The diagram below shows where to find the important connection and adjustment

points.

Logic

Connector

(STEP+/-, DIR+/-, EN+/-)

Mounting

Hole (1 of 6)

Power

Connector

Motor

Connector

Switches for

Selecting Current,

Step Resolution,

Current Reduction

and Self Test

Power On

LED

VDC +

STP-

DRV-4035

Step Motor

Power Supply

–

Stepper Drive

VDC –

A +

A –

B +

B –

Step Motor

STP-MTRx

Red

White

Green

Black

A+

A–

B+

B–

Cable Color Code

STP-PWR-3204

WireTe rm Pin #

Motor

Power

35 VDC

Logic

Power

5VDC

STP-DRV-4035

Typical Wiring

Diagram

12" Motor Pigtail

with Connector

Extension Cable

with Connector

STP-EXTx

SureStepTM Stepping Systems User Manual 3–5

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

5th Ed., Rev. B 01/2019

Connecting the Motor

Warning: When connecting a step motor to the SureStep™ STP-DRV-4035

microstepping drive, be sure that the motor power supply is switched off. When using

a motor not supplied by automationDirect, secure any unused motor leads so that they

can’t short out to anything. Never disconnect the motor while the drive is powered up.

Never connect motor leads to ground or to a power supply. (See the Typical Wiring

Diagram shown on page 2-4 of this chapter for the step motor lead color code of

automationDirect supplied motors.)

You must now decide how to connect

your stepping motor to the SureStepTM

STP-DRV-4035 microstepping drive.

Four Lead Motors

Four lead motors can only be connected

one way. Please follow the wiring

diagram shown to the right.

Note: All AutomAtionDirect SureStep™

motors are four lead bipolar step motors.

Six Lead Motors

Six lead motors can be connected in series or center tap. In series mode, motors

produce more torque at low speeds, but cannot run as fast as in the center tap

configuration. In series operation, the motor should be operated at 30% less than

rated current to prevent overheating. Wiring diagrams for both connection methods

are shown below. NC means not connected to anything.

Note: Be aware that step motor wire lead colors vary from one manufacturer to another.

A+

A–

B+ B–

lead

motor

Red

White

Green Blac

4 Leads

A+

A–

B+B– NC

lead

motor

Red Black Red

Wht

Green

Grn/Wht

White

6 Leads Series Connected

A+

A–

B+B– NC

lead

motor

Grn/Wht

White

Green

Red

Red/

Wht

Black

6 Leads Center Tap Connected

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

SureStepTM Stepping Systems User Manual

3–6 5th Ed., Rev. B 01/2019

Eight Lead Motors

Eight lead motors can also be connected in two ways: series or parallel. Series

operation gives you more torque at low speeds and less torque at high speeds.

When using series connection, the motor should be operated at 30% less than the

rated current to prevent over heating. Parallel operation allows a greater torque at

high speed. When using parallel connection, the current can be increased by 30%

above rated current. Care should be taken in either case to assure the motor is not

being overheated. The wiring diagrams for eight lead motors are shown below.

Note: Be aware that step motor wire lead colors vary from one manufacturer to another.

Connecting the Power Supply

The STP-PWR-3204 power supply from automationDirect is the best choice to

power the step motor drive. If you need information about choosing a different

power supply, please read the section titled “Choosing a Power Supply” in Chapter

7: “SureStep System Power Supplies”.

If your power supply does not have a fuse on the output or some kind of short circuit

current limiting feature you need to put a 4 amp fast acting fuse between the drive

and power supply. Install the fuse on the + power supply lead.

Connect the motor power supply “+” terminal to the driver terminal labeled “+

VDC”. Connect power supply “-” to the drive terminal labeled “VDC-”. Use no

smaller than 18 gauge wire. Be careful not to reverse the wires. Reverse connection

will destroy your drive and void the warranty.

A+

A–

B+ B–

lead

motor

8 Leads Series Connected

Orange

Org/Wht

Blk/Wht

Black

Red Red/

Wht

Yel/

Wht

Yellow

8 Leads Parallel Connected

A+

A–

B+ B–

lead

motor

Orange

Org/

Wht

Blk/

Wht

Black

Red

Red/

Wht

Yel/

Wht

Yellow

VDC

Step Motor

Power Supply

12 - 42 VDC

–

Fuse *

+–

* External fuse not required when using an

STP-PWR-3204 P/S; fuse is internal.

Do NOT use STP-PWR-48xx or -70xx power supplies with an STP-DRV-4035 drive,

because those power supplies exceed the voltage limit of this drive.

SureStepTM Stepping Systems User Manual 3–7

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

5th Ed., Rev. B 01/2019

Further information about braking accessories and regeneration clamping can

be found in Appendix A and the STP-DRVA-RC-050 REGENERATION CLAMP

datasheet.

Connecting the Logic

The SureStep drive contains optical

isolation circuitry to prevent the electrical

noise inherent in switching amplifiers

from interfering with your circuits. Optical

isolation is accomplished by powering

the motor driver from a different supply

source than your control circuits. There

is no electrical connection between the

two; signal communication is achieved

by infrared light. When your circuit turns

on or turns off, an infrared LED (built

into the drive), signals a logic state to the

phototransistors that are wired to the brains

of the drive. A schematic diagram input

circuit is shown to the right.

You will need to supply a source of step pulses to the drive at the STEP+ and STEP–

terminals and a direction signal at the DIR+ and DIR– terminals, if bidirectional

rotation is required. You will also need to determine if the ENABLE input terminals

will be used in your application. Operation, voltage levels and wiring on the

ENABLE terminals is the same as the STEP and DIRECTION terminals. The EN+

and EN– terminal can be left not connected if the enable function is not required.

All logic inputs can be controlled by a DC output signal that is either sinking (NPN),

sourcing (PNP), or differential.

On the next couple of pages are examples for connecting various forms of outputs

from both indexers and PLCs.

Internal to the

STP-DRV-4035

Drive Input Circuit

220 ohms

STEP+

STEP–

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

SureStepTM Stepping Systems User Manual

3–8 5th Ed., Rev. B 01/2019

Connecting to an Indexer with Sinking Outputs

+5V OUT DIR+

DIR DIR–

STEP+

STEP STEP–

Indexer

with

Sinking

Outputs

STP-DRV-4035

Drive

EN+

EN–

N/C

Connecting to an Indexer with Sourcing Outputs

COM DIR–

DIR DIR+

STEP–

STEP STEP+

Indexer

with

Sourcing

Outputs

STP-DRV-4035

Drive

EN+

EN–

N/C

Connecting to an Indexer with Differential Outputs

DIR+ DIR+

DIR– DIR–

STEP+

STEP– STEP–

Indexer

with

Differential

Outputs

STP-DRV-4035

Drive

STEP+ EN+

EN–

N/C

Note: Many high speed indexers have differential outputs.

SureStepTM Stepping Systems User Manual 3–9

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

5th Ed., Rev. B 01/2019

Using Logic That is Not 5 volt TTL Level

Some step and direction signals, especially those of PLCs, don’t use 5 volt logic.

You can connect signal levels as high as 24 volts to the SureStep drive if you add

external dropping resistors to the STEP, DIR and EN inputs, as shown below.

• For 12 volt logic, add 820 ohm, 1/4 watt resistors

• For 24 volt logic, use 2200 ohm, 1/4 watt resistors

Connecting to an Indexer with Sink or Source 12-24 VDC Outputs

Connecting to a PLC with Sink or Source 12-24 VDC Outputs

Note: Most PLCs can use 24 VDC Logic.

The Enable Input

The ENABLE input allows the user to turn off the current to the motor by providing

a positive voltage between EN+ and EN-. The logic circuitry continues to operate,

so the drive “remembers” the step position even when the amplifiers are disabled.

However, the motor may move slightly when the current is removed depending on

the exact motor and load characteristics.

Note: If you have no need to disable the amplifiers, you don’t need to connect anything

to the ENABLE input.

Connecting to Indexer with 12 - 24 VDC Sinking Outputs - stretched

+12-24V DIR+

DIR DIR–

STEP+

STEP STEP–

Indexer

with

Sinking

Outputs R

STP-DRV-4035

Drive

EN+

EN–

ENABLE

(If enable function is used)

Connecting to PLC with 12 - 24 VDC Sinking Outputs - stretched

+12-24V DIR+

DIR DIR–

STEP+

STEP STEP–

PLC

with

Sinking

Outputs R

STP-DRV-4035

Drive

EN+

EN–

ENABLE

(If enable function is used)

–

COM 12-24 VDC

Connecting to Indexer with 12 - 24 VDC Sourcing Outputs - stretched

COM DIR–

DIR DIR+

STEP–

STEP STEP+

Indexer

with

Sourcing

Outputs R

STP-DRV-4035

Drive

EN–

EN+

ENABLE

(If enable function is used)

Connecting to PLC with 12 - 24 VDC Sourcing Outputs - stretched

COM DIR–

DIR DIR+

STEP–

STEP STEP+

PLC

with

Sourcing

Outputs R

STP-DRV-4035

Drive

EN–

EN+

ENABLE

(If enable function is used)

+–

+12-24V 12-24 VDC

Chapter 3: SureStepTM STP-DRV-4035 Microstepping Drive

SureStepTM Stepping Systems User Manual

3–10 5th Ed., Rev. B 01/2019

Setting Phase Current

Before you turn on the power supply the first time, you need to set the drive for

the proper motor phase current. The rated current is usually printed on the motor

label. The SureStep drive current is easy to set. If you wish, you can learn a simple

formula for setting current and never need the manual again. Or you can skip to the

table on the next page, find the current setting you want, and set the DIP switches

according to the picture.

Current Setting Formula

Locate the bank of tiny switches near the motor connector. Five of the switches, DIP

switch positions 5-9, have a value of current printed next to them, such as 0.1, 0.2,

0.4, 0.8 and 1.6. Each switch controls the amount of current, in amperes (A), that

its label indicates in addition to the minimum current value of 0.4 Amps. There is

always a base current of 0.4 Amps, even with all five DIP switches set to the “off”

position (away from their labels). To add to that, slide the appropriate switches

toward their labels on the PC board. You may need a small screwdriver for this.

DIP switch current total settings =

step motor required phase current – 0.4 Amps always present base current

Example

Suppose you want to set the drive for 2.2 Amps per

phase based on the step motor showing a phase

current of 2.2 Amps. You need the base current of

0.4 Amps plus another 1.6 and 0.2 Amps.

2.2 = 0.4 + 1.6 + 0.2

Slide the 1.6 and 0.2 Amp DIP switches toward the

labels as shown in the figure to the right.

Step A+ A– B+ B–

DIR=1

DIR=0

ccw

Step 0 is the Power Up State

Step Table

(half stepping)

open

–

open

–

open

–

open

–

open

–

0.1

0.2

0.4

0.8

1.6

56789

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