Applied Motion 3535 User Manual

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Page 1

Amplier

Optical Isolator

step

direction

Step

Sequencer

Optical Isolator

Oscillator

STEP/SLEW JUMPER

current setting

full step/ half step

step

dir

accel decel

speed adj

A+ A– B+ B–

to motor

Block Diagram

3535 O only

logic

connector

(STEP, +5, DIR, EN

trimpots for adjusting

oscillator speed, accel and

decel rates

(3535 O only)

mounting

hole (1 of 6)

power

connector

motor

connector

switches for selecting current & full or half stepping

jumper for selecting

oscillator mode

(3535 O only)

connector for external

speed control (3535 O only)

12–35V

motor

supply

12-35 VDC+–

3A slow blow fuse

DO NOT REVERSE WIRES - THIS WILL DAMAGE THE DRIVE

HALF STEP

0.1

0.2

0.4

0.8

1.6

Shown in FULL STEP position

HALF STEP

0.1

0.2

0.4

0.8

1.6

Shown in FULL STEP position

DIR

STEP

+5V

Drive Input Circuit

1kW

WWW.APPLIED-MOTION.COM

A+

A–

B+ B–

lead

motor

Red

Blue

Yellow

White

4 Leads

A+

A–

B+

B–

lead

motor

Red

Black

Red/ Wht

Green

Grn/Wht

White

6 Leads Series Connected

A+

A–

B+B–

lead

motor

Grn/Wht

White

Green

Red

Red/

Wht

Black

6 Leads Center Tap Connected

A+

A–

B+ B–

lead

motor

8 Leads Series Connected

Orange

Org/Wht

Blk/Wht

Black

Red

Red/

Wht

Yel/ Wht

Yellow

A+

A–

B+

B–

lead

motor

Orange

Org/ Wht

Blk/Wht

Black

Red

Red/Wht

Yel/ Wht

Yel low

8 Leads Parallel Connected

Connecting the Power Supply

Quick Setup Guide 3535 & 3535-O

Connecting the Motor

STEP motors have 4, 6 or 8 leads, these are wired to 4 connections on the drive in various combinations.

Motors will perform differently according to the way it is connected,

to nd out more about the different

ways of connecting your motor, see the specs or FAQs on our website.

TO DOWNLOAD A FULL USER MANUAL PLEASE VISIT OUR WEBSITE

Selecting Between Full and Half Step Operation

The top switch in the bank of DIP switches selects between FULL and HALF step operation.

Setting Phase Current

The drive uses a combination of DIP switch settings to set the current. There is always a base current of 0.4A. To increase this current slide the switch for each value towards the label until they add up to your required value. Suppose you want to set the driver for 2.2 amps per phase. You need the 0.4 A base current plus another 1.6 and 0.2 A.

2.2 = 0.4 + 1.6 + 0.2

Slide the 1.6 and 0.2 A switches toward the labels as shown in the gure.

Warning: When connecting the motor to the driver, be sure that the motor power supply is off. Secure any unused motor leads so that they can’t short to anything. Never disconnect the motor while the drive is powered up. Never connect motor leads to ground or to a power supply!

Connecting Logic

A schematic diagram of the input circuit is shown below.

You must supply 5 volts DC to activate the LEDs on the input side of the optoisolators. The maximum current draw is 15 mA.

Your controlling logic must be capable of sinking at least 5 mA to control each drive input. Most CMOS and open collector TTL devices are directly compatible with this drive. Logic low, or 0, for a given input occurs when that input is pulled to less than 0.8 volts DC. In this state the LED is conducting current. Logic high, or 1, occurs when the input is greater then 4 volts or open.

STEP tells the driver when to move the motor one step. DIRECTION signals which way the motor should turn. ENABLE allows the user to turn off the current to the motor by setting this signal

to logic 0.

If you have no need to disable the ampliers, you don’t need to connect

anything to the ENABLE input.

Using the Oscillator

Drives with an O sufx are equipped with internal

pulse generators that you can use to drive the mo-

tor. To set the drive to oscillator mode, simply nd

the jumper located near the center of the printed circuit board and move it to the SLEW setting. The

gure at the right shows the proper setting of the

jumper.

To change the slew speed, locate the trimpot labeled SPEED. By turning the brassscrew you can raise or lower the speed. Turning the screw clockwise makes the motor run faster.

The acceleration and deceleration rates can also be adjusted using the trimpots labeled ACCEL and DECEL. Turning the screw clockwise makes the motor accelerate and decelerate faster.

Flip Over

Page 2

Using Remote Speed Control Potentiometer

3535 O

Drive

external

pot

XSPD

connector

1 2

Motor Power

Supply

12-35

VDC

–

Run/Stop switch

(closed=run)

Direction

switch

3535 O

drive

STEP +5 DIR

12-35VDC

Supply R Supply R Supply R

Voltage Ohms Voltage Ohms Voltage Ohms

12 1200 21 3000 30 4700 15 1800 24 3600 33 5100 18 2400 27 4200 35 5600

Table I: External Dropping Resistors

smooth flat surface

#4 screws

wide side mount narrow side mount

The latest revision of model 3535 O step motor drive includes an analog signal input connector that can be used to control the oscillator speed externally. Normally, an on board potentiometer controls the speed.

You will need:

a 100kW or 200kW linear potentiometer. A multiturn type is recommended.

• a two pin female connector compatible with .025 inch square pins on .100”

• centers. AMP type MTA-100 is one type that works well a shielded, two wire cable

•

To install the external pot:

• locate the connector on the 3535 O labelled ÒXSPD.Ó It can be found between the

signal connector and the three blue potentiometers.

• turn the screw on the blue SPEED potentiometer 15 turns counterclockwise. If you

don’t do this, the external potentiometer will not provide the correct speed range.

• prepare a cable with your pot on one end and the connector on the other end:

the potentiometer wiper connects to pin 2



the potentiometer CW terminal connects to pin 1



the third pot terminal connects to the wiper



the cable shield connects to the CW pot terminal



With this arrangement, speed will increase as you turn the external pot clockwise.The frequency range for the 200k ohm pot will be 600 to 5000 steps per second. The frequency range for the 100k ohm pot will be900 to 5000 steps per second. The on board trimpots will still control acceleration and decleration times. Turning the pots clockwise makes the acceleration and deceleration faster (i.e. reduces the time to or from speed).

In some applications, step motors and drives are used with mechanical switches only and there is no readily available source of +5 volts.

In these instances, the 12-35 VDC motor power supply can be used with additional dropping resistors to power the opto LEDs. The recommended wiring diagram is shown on page 11. Table I lists the appropriate resistor value to use for a given power supply voltage. 1/4 watt or larger resistors should be used.

Please do not to reverse the wiring, as damage to the LEDs will result rendering the drives inoperable. Check your wiring carefully before turning on the power supply!

Using Mechanical Switches with 3535-O Drive

The 3535-O was designed to be used with active logic and for that reason are optically

isolated. To activate the optoisolators a small, but not insignicant amount of current at

+5 volts DC is required.

Choosing a Power Supply

To nd out how to choose a power supply refer to the tech notes on our website.

Mounting the Drive

To operate the drive continuously at maximum power you must properly mount it on a heat sinking surface with a thermal constant of no more than 4°C/watt. Often, the metal enclosure of your system will make an effective heat sink.

Technical Specications

Ampliers

Dual, bipolar H-bridge, pulse width modulated switching at 20kHz. 12-35 VDC input. 0.4 - 3.5 amps/phase output current, switch selectable in 0.1 A increments. 122 watts maximum output power. Automatic idle current reduction, reduces current to 50% of setting after one second

Oscillator (O sufx)

400 to 5000 steps per second. Linear acceleration and deceleration, individually adjustable from 5 to 900 msec.

Inputs

Step, direction and enable, optically isolated, 5V logic. 5mA/signal, sink requirement. Motor steps on rising edge of stepline. 10 µsec minimum low pulse. 50 µsec minimum set up time for direction signal. Step input doubles as run/stop in oscillator mode. (0 = run, 1 = stop.)

Physical

Mounted on 1/4 inch thick black anodized aluminum heat transfer chassis.

1.5 x 3.0 x 4.0 inches overall. Power on LED. Maximum chassis temperature: 70° C.

Connectors

European style screw terminal blocks. Motor: 4 position. Signal Input: 4 position. DC Input: 2 position.

CE Mark.

Complies with EN55011A and EN50082-1(1992).

Applied Motion Products

404 Westridge Dr.

Watsonville, CA 95076

tel / 831-761-6555

fax / 831-761-6544

www.applied-motion.com

Doc 920-0013 - 2/26/08