Features .................................................................................................................................................................................... 3
Getting Started .......................................................................................................................................................................... 5
Connecting to the PC using RS-232 ......................................................................................................................................... 7
Connecting to a host using RS-485 option card ....................................................................................................................... 8
RS-232 to RS-485 4-wire Converter .................................................................................................................................. 8
RS-232 to RS-485 2-wire Converter .................................................................................................................................. 9
Converting USB to RS-485 ................................................................................................................................................ 9
Connecting the Power Supply ................................................................................................................................................ 11
Connecting the Motor ............................................................................................................................................................. 12
Connecting an Encoder (Requires the optional Encoder Feedback Card) ................................................................................ 13
High Speed Digital Inputs ................................................................................................................................................ 15
Using High Speed Inputs with 12-24 Volt Signals .................................................................................................... 16
Connecting to PLC with Sourcing (PNP) Outputs ..................................................................................................... 16
Using Mechanical Switches at 24 Volts .................................................................................................................... 17
Connecting to PLC with Sinking (NPN) Outputs ....................................................................................................... 17
Other Digital Inputs .......................................................................................................................................................... 18
Single Ended Inputs .................................................................................................................................................. 18
What is COM?........................................................................................................................................................... 18
Wiring a Mechanical Limit Switch ............................................................................................................................. 21
Wiring a Limit Sensor ............................................................................................................................................... 21
Analog Inputs .................................................................................................................................................................. 22
Driving a Relay ................................................................................................................................................................ 24
Choosing a Power Supply ...................................................................................................................................................... 25
Current ............................................................................................................................................................................ 25
Motor Heating ........................................................................................................................................................................ 29
Mounting the Drive ................................................................................................................................................................. 34
Thank you for selecting an Applied Motion Products motor control. We hope our dedication to
performance, quality and economy will make your motion control project successful.
If there's anything we can do to improve our products or help you use them better, please call or
fax. We'd like to hear from you. Our phone number is (800) 525-1609, or you can reach us by fax
at (831) 761-6544. You can also email [email protected].
Features
• Programmable, microstepping digital step motor driver in compact package
• ST5 operates from a 24 to 48 volt DC power supply
• ST10 operates from a 24 to 80 volt DC power supply
• Operates in velocity or position mode
• Accepts analog signals, digital signals and RS-232 serial commands
• Optional RS-422/485 communication
• Optional encoder feedback
• ST5 provides motor current up to 5 amps/phase (peak of sine)
• ST10 provides motor current up to 10 amps/phase (peak of sine)
• Eight optically isolated digital inputs
• Four optically isolated digital outputs
• Two ±10 volt analog inputs for speed and position control. Can also be configured for 0 to
10V, ±5V or 0 to 5V signal ranges.
This manual describes the use of four different drive models. What you need to know and what
you must have depends on the drive model. For all models, you’ll need the following:
• a 24-48 volt DC power supply. (24 - 80VDC for ST10 models). Please read the
section entitled
• a compatible step motor (see page 25)
• a small flat blade screwdriver for tightening the connectors (included).
• a personal computer running Microsoft Windows 98, 2000, NT, Me or XP.
• The Applied Motion CD (included)
• An Applied Motion programming cable (included)
If you’ve never used an ST drive beforeIf you’ve never used an ST drive before
If you’ve never used an ST drive before
If you’ve never used an ST drive beforeIf you’ve never used an ST drive before
software before you try to deploy the system in your application. We strongly recommend the
following:
Choosing a Power Supply
you’ll need to get familiar with the drive and the set up
for help in choosing the right power supply.
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1. For -Q drives, install the
CD. For
2. Launch the software by clicking Start...Programs...Applied Motion...
3. Connect the drive to your PC using the programming cable.
4. Connect the drive to the power supply.
5. Connect the drive to the motor.
6. Apply power to the drive.
7. The software will recognize your drive, display the model and firmware version and be ready for
The connectors and other points of interest are illustrated below. Depending on your drive model
and application, you’ll need to make connections to various parts of the drive. These are detailed
later in the manual.
• Locate your computer within 8 feet of the drive.
• Your drive was shipped with a communication cable. Plug the large end into the serial port of
your PC and the small end into the PC/MMI jack on your drive. Secure the cable to the PC with
the screws on the sides.
Never connect a drive to a telephone circuit. It uses the same connectors and
cords as telephones and modems, but the voltages are not compatible.
If your PC does not have a serial port, you should purchase a “USB Serial Converter”. We have
had good results with the Port Authority “USB Serial DB9” Adapter from CablesToGo.com and with
the SW1301 from SewellDirect.com.
For laptops, a PCMCIA converter card is a good choice. Our applications engineers use the SSP-
RS-485 allows you to connect more than one drive to a single host PC, PLC, HMI
or other computer. It also allows the communication cable to be long (more than
1000 feet). But the device to which you connect must have an RS-485 port.
Pin diagram is shown to the right. Wiring diagrams can be found on the next page.
We recommend the use of Category 5 cable. It is widely used for computer networks, it is inexpensive, easy to get and certified for quality and data integrity.
The ST drives can be used with either two wire or four wire RS-485 implementations. The connection can be point to point (i.e. one drive and one host) or a multi-drop network (one host and up to
32 drives).
Four Wire SystemsFour Wire Systems
Four Wire Systems utilize separate transmit and receive wires. One pair of wires must connect
Four Wire SystemsFour Wire Systems
the host computer's transmit signals to each drive's RX+ and RX- terminals. Another pair connects
the TX+ and TX- drive terminals to the host computer's receive signals. A logic ground terminal is
provided on each drive and can be used to keep all drives at the same ground potential. This
terminal connects internally to the DC power supply return (V-), so if all the drives on the RS-485
network are powered from the same supply it is not necessary to connect the logic grounds.
should still connect one drive's GND terminal to the host computer ground.should still connect one drive's GND terminal to the host computer ground.
should still connect one drive's GND terminal to the host computer ground.
should still connect one drive's GND terminal to the host computer ground.should still connect one drive's GND terminal to the host computer ground.
RS-485/422
RX+
RX
TX+
–TX–
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GND
Four wire systems are better than two wire types because the host can send and receive data at the
same time, increasing system throughput. Furthermore, the host never needs to disable its
transmitter, which simplifies your software.
RS-232 to RS-485 4-wire Converter
Model 117701 from Jameco Electronics (800-831-4242) works well for converting your PC’s RS232 port to four wire RS-485. This adaptor is for a 25 pin serial port. If you are like most people
and have a 9 pin serial port on your PC, you will also need to purchase Jameco cable 31721.
Connect as follows:
Set the switches for DCE and TxON,RxON. Don't forget to plug in the DC power adaptor that comes
with the unit.
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RS-485 Four Wire System
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wo Wire Systemswo Wire Systems
T
wo Wire Systems transmit and receive on the same pair of wires, which can lead to trouble. The
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wo Wire Systemswo Wire Systems
host must not only disable its transmitter before it can receive data, it must do so quickly, before a
drive begins to answer a query. The ST drives include a “transmit delay” parameter that can be
adjusted to compensate for a host that is slow to disable its transmitter. This adjustment can be
made over the network using the TD command, or it can be set using the
ST Configurator
software.
It is not necessary to set the transmit delay in a four wire system.
RS-232 to RS-485 2-wire Converter
Model 485-25E from Integrity Instruments (800-450-2001) works well for converting your PC’s
RS-232 port to RS-485. It comes with everything you need.
Connect the adaptor’s “B” pin to the
ST drive’s TX+ and RX+ terminals. Connect “A” to the drive’s TX- and RX- terminals.
Converting USB to RS-485
The USB-COMi-M from www.byterunner.com is an excellent choice for USB to RS-485 conversion.
Set SW1 to ON and SW2-4 to OFF. On the USB-COMi-M screw terminal connector: pin1 goes to
RX- and TX-. Connect pin 2 to RX+ and TX+. Pin 6 is ground. The DB-9 is not used.
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99
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Assigning Addresses
Before wiring the entire system, you'll need to connect each drive individually to the host computer
so that a unique address can be assigned to each drive. Use the programming cable and the
Configurator™
software that came with your drive for this purpose.
Connect the drive to your PC, then launch the
your drive. If you have already configured your drive, then you should click the Upload button so
that the
select the “SCL” operating mode. If you have a Q drive, you may want to select “Q Programming”.
Either way, you’ll see the RS-485 Address panel appear. Just click on the address character of your
choice. You can use the numerals 0..9 or the special characters ! " # $ % & ' ( ) * + , - . / : ; < = >
? @ . Just make sure that each drive on your network has a unique address. If you are using a 2
wire network, you may need to set the Transmit Delay, too. 10 milliseconds works on the adapters
we’ve tried. Once you’ve made your choices, click Download to save the settings to your drive.
ST Configurator™
settings match those of your drive. Click on the Motion button, then
If you need information about choosing a power supply, please read
located elsewhere in this manual.
Connect the motor power supply "+" terminal to the driver terminal labeled "VDC". Connect power
supply "-" to the drive terminal labeled "GND". Use 18 or 20 gauge wire. The ST drives contain an
internal fuse that connect to the power supply + terminal. This fuse is not user replaceable. If you
want to install a user servicable fuse in your system install a fast acting fuse in line with the +
power supply lead. Use a 4 amp fuse for the ST5 drives and 7 amps for the ST10.
The green ground screw on the corner of the chassis should be connected to earth ground.
Be careful not to reverse the wires. Reverse connection will destroy your driver,
void your warranty and generally wreck your day.
If you plan to use a regulated power supply you may encounter a problem with regeneration. If you
rapidly decelerate a load from a high speed, much of the kinetic energy of that load is transferred
back to the power supply. This can trip the overvoltage protection of a switching power supply,
causing it to shut down. We offer the RC050 “regeneration clamp” to solve this problem. If in
doubt, buy an RC050 for your first installation. If the “regen” LED on the RC050 never flashes, you
don’t need the clamp.
Never connect or disconnect the motor while the
power is on.
Four lead motorsFour lead motors
Four lead motors can only be connected one way. Please
Four lead motorsFour lead motors
follow the sketch at the right.
Six lead motorsSix lead motors
Six lead motors can be connected in series or center tap.
Six lead motorsSix lead motors
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 the rated current to prevent overheating. Winding
diagrams for both connection methods are shown below.
NC means not connected.
Eight lead motors can also be connected in two ways: series and parallel. As with six lead
Eight lead motorsEight lead motors
motors, series operation gives you less torque at high speeds, but may result in lower motor
losses and less heating. In series operation, the motor should be operated at 30% less than the
unipolar rated current. Thye motors recommended on page 26 should be connected in parallel.
The wiring diagrams for eight lead motors are shown on the next page.
Connecting an Encoder (Requires the optional Encoder
Feedback Card)
The encoder connections use a HD-15 connector, which you must connect to your encoder as
shown below. See back page for mating connector information.
If your encoder is single ended, connect the encoder
outputs to the A+, B+ and Z+ inputs. Leave A-, B- and
Z- unconnected. (Z is the encoder index signal and is
optional.)
• high speed digital inputs for step & direction commands or encoder following, 5 volt logic
• digital inputs for other signals, 12 - 24 volt logic
• analog inputs for analog speed and positioning modes
All drives include eight digital inputs and two analog inputs.
• CW & CCW Limit: can be used to inhibit motion in a given direction, forcing the motor and load
to travel within mechanical limits. Can be configured for active closed, active open or not used.
• IN1/STEP & IN2/DIR: digital signals for commanding position. Quadrature signals from encoders can also be used. These inputs can also be connected to sensors, switches and other devices
for use with Q and Si™ commands such as
others.
• IN3,4,5,6: software programmable inputs can be used for motor enable, alarm reset or jogging.
These inputs can also be connected to sensors, switches and other devices for use with Q and Si™
Wait Input, Seek Home, Feed to Sensor, If Input
• Analog In: analog velocity or position command signal. Can be configured for 0-10V, 0-5V,
±10V or ±5V, with or without offset.
The ST-Q and ST-Si drives include two high speed inputs called STEP and DIR. They accept 5 volt
single-ended or differential signals, up to 2 MHz. Normally these inputs connect to an external
controller that provides step & direction command signals. You can also connect a master encoder
to the high speed inputs for following applications. Or you can use these inputs with
Input, Feed to Sensor, Seek Home
Connection diagrams follow.
and other such commands.
Wait Input, If
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Connecting to Indexer with Differential Outputs
(Many High Speed Indexers have Differential Outputs)
Most PLCs don't use 5 volt logic. You can connect signal levels as high as 24 volts to the STEP
and DIR inputs if you add external dropping resistors, 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
The maximum voltage that can be applied to an input terminal is 24 volts DC.
Never apply AC voltage to an input terminal.
speed STEP and DIR inputs are configured for five
volt logic. All other digital inputs are designed for
operation between 12 and 24 volts DC.
Single Ended Inputs
The ST drives include four single ended, optically
isolated input circuits that can be used with
sourcing or sinking signals, 12 to 24 volts. This
allows connection to PLCs, sensors, relays and
mechanical switches. Because the input circuits
are isolated, they require a source of power. If you
are connecting to a PLC, you should be able to get
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power from the PLC power supply. If you are
using relays or mechanical switches, you will need a 12-24 V power supply. This also applies if
you are connecting the inputs to the programmable outputs of an Si product from Applied Motion.
What is COM?
"Common" is an electronics term for an electrical connection to a common voltage. Sometimes
"common" means the same thing as "ground", but not always. In the case of the ST drives, if you
are using sourcing (PNP) input signals, then you will want to connect COM to ground (power
supply -). If you are using sinking (NPN) signals, then COM must connect to power supply +.
Note: If current is flowing into or out of an input, the logic state of that input is low or closed. If no
current is flowing, or the input is not connected, the logic state is high or open.
The diagrams on the following pages show how to connect the inputs to various commonly used
devices.
Connecting a PNP Type Proximity Sensor to a an input
(When prox sensor activates, input goes low).
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Connecting Limit Switches
The CWLIMIT and CCWLIMIT inputs are used for connecting end of travel sensors. These inputs
are differential, which allows you to use signals that are sinking (NPN), sourcing (PNP) or differential (line driver). By connecting switches or sensors that are triggered by the motion of the motor
or load, you can force the motor to operate within certain limits. This is useful if a program or
operator error could cause damage to your system by traveling too far.
The limit inputs are optically isolated. This allows you to choose a voltage for your limit circuits of
12 to 24 volts DC. This also allows you to have long wires on limit sensors that may be far from
the drive with less risk of introducing noise to the drive electronics. The schematic diagram of the
limit switch input circuit is shown below.
You can use normally open or normally closed limit switches. Either way, wire them as shown
here. Be sure to set the polarity using the
Si Programmer™
for Si™ drives or the
ST Configurator™
software for the ST5-Q and ST10-Q.
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Wiring a Limit Sensor
Some systems use active limit sensors that produce a voltage output rather than a switch or relay
closure. These devices must be wired differently than switches.
If your sensor has an open collector output or a sinking output, wire it like this:
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If the sensor output goes low at the limit, select the option “closed” (in the software). If the output
is open, or high voltage, choose “open”.
Other sensors have sourcing outputs. That means that current can flow out of the sensor output,
but not into it. In that case, wire the sensor this way:
The ST drives feature two analog inputs. Each input can
accept a signal range of 0 to 5 VDC, ±5 VDC, 0 to 10 VDC
or ±10 VDC. The drive can be configured to operate at a
speed or position that is proportional to the analog signal.
The ST drives feature four digital outputs. These outputs
can be set to automically control a motor brake, to signal a
fault condition, to indicate when the motor is moving or to
provide an output frequency proportional to motor speed
(tach signal). Or the outputs can be turned on and off by
program instructions like Set Output.
The outputs can be used to drive LEDs, relays and the
inputs of other electronic devices like PLCs and counters.
9
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For OUT4, the “+” (collector) and “-” (emitter) terminals of
each transistor are available at the connector. This allows
you to configure each output for current sourcing or sinking. The OUT1-3 outputs can only sink
current. The COM terminal must be tied to power supply (-).
Diagrams of each type of connection follow.
Do not connect the outputs to more than 30VDC.
The current through each output terminal must not exceed 100 mA.
When choosing a power supply, there are many things to consider. If you are manufacturing
equipment that will be sold to others, you probably want a supply with all the safety agency
approvals. If size and weight are an issue use a switching supply.
You must also decide what size of power supply (in terms of voltage and current) is needed for
your application.
Voltage
PWM drives work by switching the voltage to the motor terminals on and off while monitoring
current to achieve a precise level of phase current. To do this efficiently and silently, you’ll want to
have a power supply with a voltage rating at least five times that of the motor. Depending on how
fast you want to run the motor, you may need even more voltage than that.
If you choose an unregulated power supplyIf you choose an unregulated power supply
If you choose an unregulated power supply
If you choose an unregulated power supplyIf you choose an unregulated power supply
does not exceed the drive’does not exceed the drive’
does not exceed the drive’
does not exceed the drive’does not exceed the drive’
Current
The maximum supply current you could ever need is the sum of the two phase currents. However,
you will generally need a lot less than that, depending on the motor type, voltage, speed and load
conditions. That's because the ST drives use switching amplifiers, converting a high voltage and
low current into lower voltage and higher current. The more the power supply voltage exceeds the
motor voltage, the less current you’ll need from the power supply. A motor running from a 48 volt
supply can be expected to draw only half the supply current that it would with a 24 volt supply.
We recommend the following selection procedure:
1. If you plan to use only a few drives, get a power supply with at least twice the rated phase
current of the motor.
2. If you are designing for mass production and must minimize cost, get one power supply
with more than twice the rated current of the motor. Install the motor in the application and
monitor the current coming out of the power supply and into the drive at various motor loads.
This will tell you how much current you really need so you can design in a lower cost power
supply.
s maximum input voltage specification.s maximum input voltage specification.
s maximum input voltage specification.
s maximum input voltage specification.s maximum input voltage specification.
, make sure the no load voltage of the supply, make sure the no load voltage of the supply
, make sure the no load voltage of the supply
, make sure the no load voltage of the supply, make sure the no load voltage of the supply
Note: The “Drive Current Setting” shown here differs from the rated current of each motor because
the rated current is RMS and the drive current setting is peak sine. If you are using a motor not
listed here, for best results set the drive current at the motor’s rated current x 1.2.
Torque-Speed Curves
Note: all torque curves were measured at 20,000 steps/rev.
Step motors convert electrical power from the driver into mechanical power to move a load.
Because step motors are not perfectly efficient, some of the electrical power turns into heat on its
way through the motor. This heating is not so much dependent on the load being driven but rather
the motor speed and power supply voltage. There are certain combinations of speed and voltage at
which a motor cannot be continuously operated without damage.
We have characterized the recommended motors in our lab and provided curves showing the
maximum duty cycle versus speed for each motor at commonly used power supply voltages.
Please refer to these curves when planning your application.
Please also keep in mind that a step motor typically reaches maximum temperature after 30 to 45
minutes of operation. If you run the motor for one minute then let it sit idle for one minute, that is a
50% duty cycle. Five minutes on and five minutes off is also 50% duty. However, one hour on and
one hour off has the effect of 100% duty because during the first hour the motor will reach full (and
possibly excessive) temperature.
The actual temperature of the motor depends on how much heat is conducted, convected or
radiated out of it. Our measurements were made in a 40°C (104°F) environment with the motor
mounted to an aluminum plate sized to provide a surface area consistent with the motor power
dissipation. Your results may vary.
You can mount your drive on the wide or the narrow side of the chassis using #6 screws. If
possible, the drive should be securely fastened to a smooth, flat metal surface that will help
conduct heat away from the chassis. If this is not possible, then forced airflow from a fan may be
required to prevent the drive from overheating.
•
Never use your drive in a space where there is no air flow or where other devices
cause the surrounding air to be more than 40°C.
•
Never put the drive where it can get wet or where metal or other electrically
conductive particles can get on the circuitry.
•
Always provide air flow around the drive. When mouting multiple ST drives near
each other, maintain at least one half inch of space between drives.
Digital MOSFET. 16 kHz PWM.
ST5: 18 - 53 VDC, motor current: 0.5 to 5.0 amps/phase peak of sine
ST10: 18 - 88 VDC, motor current: 0.5 to 10 amps/phase peak of sine
Screw Terminal Connectors that mate directly to the DB-25 connector on the front panel of the
drive:
Phoenix Contact P/N 2761622
This connector is not available from Applied Motion. You must purchase it from a
Phoenix distributor.
Mating Cable for IN/OUT connector with “flying leads”
Black Box P/N: BC00702
This cable is not available from Applied Motion. You must purchase it from Black Box.
Useful for custom wired applications. This shielded cable has a DB-25 connector on each
end. You can cut off the female end to create a 6 foot “DB-25 to flying lead cable”.
It’ll be easier to wire if you get the cable color chart from Black Box’s web site.
Applied Motion Products MMI-01 or MMI-02 (backlit).
3636
36
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Page 37
Alarm Codes
In the event of an error, the green LED on the main board will flash one or two times, followed by a series of red flashes. The
pattern repeats until the alarm is cleared.