User Manual
Contents
1. A Orange A Orange BIk Wht Org Wht 8 8 lead lead BIk Wht motor WU motor A Black Black Yel Yel 8 Leads Parallel Connected Red Yellow B Wht wht B 8 Leads Series Connected 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 inside drive optional i Ce gt encoder B 3 8 GND o 4 do not connect 9 2 encoder A o D T LA encoder B 4 7 5VDC 200mA do not connect 10 1 encoder A 5 CB encoder Z 5 6 encoder Z e i o CEDH 242 GE O C gt shield 15 11 do not connect M do not connect 14 12 do not connect 2 do not connect 13 2 9 25 lt 5 Front View GND Pin Assignments facing drive Internal Circuit 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual Connecting Input Signals The ST drives have three types of inputs high speed digital inputs for s2. Change adapter settings 2 You should see an icon for your network interface card NIC Right click and select properties 3 Scroll down until you see Internet Properties TCP IP Select this item and click the Properties but ton On Windows 7 and Vista look for TCP IPv4 l Local Area Connection Properties General Advanced Connect using Intel R PRO 100 VE Network Conne This connection uses the following items NWLink NetBIOS NW Link IPX SPX NetBIOS Compatible Transport Prot Intemet Protocol TCP IP lt v gt Internet Protocol TCP IP Properties General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address IP address 192 168 0 2 Subnet mask 255 258 0 0 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual If the option Obtain an IP address automatically is selected your PC is getting an IP address and a subnet mask from the DHCP server Please cancel this dialog and proceed to the next section of this manual Using DHCP 5 Ifthe option Use the following IP address is selected life is good Change the subnet mask to 255 255 0 0 and click OK Using DCHP If you want to use your drive on a
3. 6 4 x 6 4 x 25 Aluminum Plate 100 400 lt 80 80 E 60 E z 60 s 40 40 20 20 0 0 r 0 10 20 30 40 50 0 10 20 30 40 50 Speed RPS Speed RPS 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual HT34 485 Max Duty cycle vs Speed 48 VDC 10 0 Amps 40 C Ambient on 10 x 10 x 5 Aluminum Plate HT34 485 Max Duty cycle vs Speed 80 VDC 10 0 Amps 40 C Ambient on 10 x 10 x 5 Aluminum Plate Speed RPS 100 100 80 80 2 2 o 60 60 2 40 x 40 20 20 0 0 r 0 10 20 30 40 50 0 10 20 30 40 50 Speed RPS Speed RPS HT34 486 Max Duty Cycle vs Speed HT34 486 Max Duty cycle vs Speed 48 VDC 10 0 Amps 40 C Ambient 80 VDC 10 0 Amps 40 C Ambient on 10 x 10 x 5 Aluminum Plate on 10 x 10 x 5 Aluminum Plate 100 UY 100 80 80 2 o 5 2 60 2 gt a a 40 40 20 20 0 0 f 0 10 20 30 40 50 0 10 20 30 40 50 Speed RPS Speed RPS HT34 487 Max Duty Cycle vs Speed HT34 487 Max Duty cycle vs Speed 48 VDC 10 0 Amps 40 C Ambient 80 VDC 10 0 Amps 40 C Ambient on 10 x 10 x 5 Aluminum Plate on 10 x 10 x 5 Aluminum Plate 100 100 80 80 5 5 60 60 a 40 x 40 20 20 0 0 r 0 1
4. 260 1 87 1 2 31 4 2 26 1 6 510 3 67 2 0 628 4 52 2 0 766 5 52 3 4 177 127 5 0 264 19 0 5 0 650 46 8 10 0 1200 86 4 9 7 1845 133 10 0 920 0004 Rev B Rotor Resistance Inductance Inertia ohms mH g cm 1 4 1 4 8 2 0 2 6 18 4 3 5 5 20 2 1 2 8 35 1 7 3 6 54 1 7 3 0 68 0 7 1 4 120 0 4 1 2 300 0 5 1 6 480 0 19 1 3 1400 0 27 2 2 2680 0 27 24 4000 7 9 10 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 motors rated current x 1 2 Torque Speed Curves Note all torque curves were measured at 20 000 steps rev Torque oz in 25 20 15 20 Speed rev sec 30 40 24 Volts DC 5014 842 1 2A HT11 013 1 2 HT11 012 1 2 920 0004 Rev B 7 9 10 40 30 20 Torque oz in 50 40 Torque oz in 250 200 Torque oz in 5 50 30 20 T5 10 Si Q Hardware manual 24 Volts DC HT17 075 2A HT17 071 2A HT17 068 1 6 o 10 15 20 30 Speed rev sec 48 Volts DC HT17 075 2A HT17 071 2A HT17 068 1 6 10 15 20 Speed rev sec 15
5. Si Q Hardware manual High Speed Digital Inputs The ST Series 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 amp direction command signals You can also connect a master encoder to the high speed inputs for fol lowing applications Or you can use these inputs with Wait Input If Input Feed to Sensor Seek Home and other such commands Connection diagrams follow X2 DIR Indexer with X2 DIR Sourcing Outputs X1 STEP X1 STEP Connecting to indexer with Sourcing Outputs CX2 DIR Indexer Ri with X2 DIR Sinking Outputs X1 STEP X1 STEP Connecting to Indexer with Sinking Outputs C X2 DIR4 DIR Indexer with X2 DIR Differential Outputs X1 STEP X1 STEP Connecting to Indexer with Differential Outputs Many High Speed Indexers have Differential Outputs 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual I i XUSTEP En codec X2 DIR 25 l I CB X2 DIR I CGNB Wiring for Encoder Following Using High Speed Inputs with 12 24 Volt Signals 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
6. network that where all or most of the devices use dynamic IP addresses supplied by a DHCP server set the rotary switch to F When the drive is connected to the network and powered on it will obtain an IP address and a subnet mask from the server that is compatible with your PC The only catch is that you won t know what address the server assigns to your drive Ethernet Configurator can find your drive using the Drive Discovery feature as long as your network isn t too large With the drive connected to the network and powered on select Drive Discovery from the Drive menu You will see a dialog such as this Normally Drive Discovery will only detect one network interface card NIC and will select it automatically If you are using a laptop and have both wireless and wired network connections a second NIC may appear x Network Interface Dialog Local Host IP Netmask 192 168 0 21 255 255 255 0 Select the host interface you want to search and hit OK Please select the NIC that you use to connect to the network to which you ve connected your drive Then click OK Drive Discovery will notify you as soon as it has detected a drive If you think this is the correct drive click Yes If you re not sure click Not Sure and Drive Discovery will look for additional drives on you network Once you ve told Drive Discovery which drive is yours it will automatically enter that drive s IP address in the IP address text box so that you are
7. ready to communicate Option 2 Connect a Drive Directly to Your PC eM T5 10 Si 0 C Hardware manual x AMP Drive Discovered Drive discovery found the following AMP drive Upload Drive o IP ADDRESS 192 168 0105 Download to Drive MAC ID 0 143 20 DF D4 ARM BUILD NUMBER 16 192 168 0 105 E e Do you want to connect to this drive No Not Sure It doesnt get much simpler than this 1 Connect one end of a CAT5 Ethernet cable into the LAN card NIC on your PC and the other into the drive You don t need a special crossover cable the drive will automatically detect the direct connec tion and make the necessary physical layer changes 2 Set the IP address on the drive to 10 10 10 10 by setting the rotary switch at 0 set the IP address of your PC a OnWindows XP right click on My Network Places and select properties b OnWindows 7 click Computer Scroll down the left pane until you see Network Right click and select properties Select Change adapter settings 4 You should see an icon for your network interface card NIC Right click and select properties a Scroll down until you see Internet Properties TCP IP Select this item and click the Properties 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual 1 Local Area Connection Properties General Advanced Connect using Intel R PRO
8. the optional Encoder Feedback Card see 22 ER l 23 Connector sss cette edu 23 Highspeed Digital MIU u u cia dE than Bam em d 24 Connecting a Potentiometer to Analog Input 1 descries Progr mmiable QUIBUS a SUMMING ONIDDU USING Y1 RM SIMKING QUID Ee Soreng uu Choosing a POWeD SUDDly edi bib daten uai tud bac tae a Recommended Molossus eden tele den o Eee Jio OY EE Mounting I s A m E DU Detur sayaq T GHNIGal Sr Call ONS Mating Connectors and ACCeSSOT GS o m mt Alarm M UL Mu GONMMECION EIC ERE T 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual Introduction 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 Y
9. 0 20 30 40 50 0 10 20 30 40 50 Speed RPS 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual Mounting the Drive 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 Mechanical Outline 474 6X SLOT 0 16 WIDE FULL R 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Technical Specifications Amplifier Digital MOSFET 20 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 Digital Inputs Step amp Direction differential optically isolated 5V logic 330 ohms internal resistance 0 5 usec minimum pulse width 2 usec minimum set up time for direction signa
10. 100 VE Network Conne Corfigure This connection uses the following items NWLink NetBIOS a NWLink IPX SPX NetBIOS Compatible Transport Prot Intemet Protocol TCP IP amp a button 0 Windows 7 and Vista look for TCP IPv4 5 Select the option Use the following IP address Then enter the address 10 10 10 11 This will give your PC an IP address that is on the same subnet as the drive Windows will know to direct any traffic intended for the drive s IP address to this interface card 6 Next enter the subnet mask as 255 255 255 0 T Besureto leave Default gateway blank This will prevent your PC from looking for a router on this subnet 8 Because you are connected directly to the drive anytime the drive is not powered on your PC will annoy you with a small message bubble in the corner of your screen saying The network cable is unplugged Option 3 Use Two Network Interface Cards NICs This technique allows you to keep your PC connected to your LAN but keeps the drive off the LAN prevent ing possible IP conflicts or excessive traffic Internet Protocol TCP IP Properties E You can get IP settings assigned automatically if your network supports this capability Othenwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use t
11. 20 25 30 35 40 Speed rev sec 24 Volts DC HT23 401 5A HT23 398 5A HT23 394 3 4A ST5 10 920 0004 Rev B 7 9 10 Si Q C Hardware manual 48 Volts DC HT23 401 5A HT23 398 150 23 394 3 4A 100 Rm 50 0 0 5 10 15 20 25 30 35 40 Speed rev sec 1200 24 Volts DC with ST10 Drive 1000 HT34 487 10A HT34 486 9 7A 8 S ao 34 485 10A 400 200 0 0 5 10 15 20 25 30 35 40 Speed rev sec 1500 48 Volts DC with ST10 Drive zs HT34 487 10A 34 486 9 7V N 900 v HT34 485 10A 9 600 cm 300 15 20 25 30 35 40 Speed rev sec 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual 80 Volts DC with ST10 Drive HT34 487 10A N 486 9 7A HT34 485 10A Torque oz in Speed rev sec Motor Heating 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 sup ply voltage There are cert
12. 4 Rev B 7 9 10 T5 10 Si Q C Hardware manual 5 24 VDC 5 24 VDC Power Supply Power Supply WOU Bo wem V 2 PLC PLC x Y K Sourcing Output Sourcing Output Y1 Y2 or Y3 Using Y4 5 24 VDC relay Power Supply 9 O IN OUT1 o i 1N4935 suppression diode EM Driving a Relay Y1 Y2 or Y3 5 24 VDC relay Power Supply au Driving a Relay Using Y4 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Choosing a Power Supply 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 applica tion 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 supply make sure the no load voltage of the supply does not exceed the
13. C 1 2A 40 C Ambient Mounted on 3 5 dia x 125 Aluminum Plate 100 80 2 o x 40 20 0 0 10 20 30 40 50 Speed RPS HT11 013 Max Duty Cycle vs Speed 24 VDC 1 2A 40 C Ambient Mounted on 3 5 dia x 125 Aluminum Plate 100 80 2 o 60 2 2 Q 40 20 0 r 0 10 20 30 40 50 Speed RPS 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual HT17 068 Max Duty cycle vs Speed 24 VDC 1 60 Amps 40 C Ambient on 4 75 x 4 75 x 25 Aluminum Plate HT17 068 Max Duty cycle vs Speed 48 VDC 1 60 Amps 40 C Ambient on 4 75 x 4 75 x 25 Aluminum Plate ue Lk xL 80 80 o 2 5 o 8 60 60 2 40 x lt 20 20 0 0 r r 0 10 20 30 40 50 0 10 ded 40 50 Speed RPS HT17 071 Max Duty Cycle vs Speed HT17 071 Max Duty cycle vs Speed 24 VDC 2 0 Amps 40 C Ambient 48 VDC 2 0 Amps 40 C Ambient on 4 75 x 4 75 x 25 Aluminum Plate on 4 75 x 4 75 x 25 Aluminum Plate 100 100 80 80 2 2 o S 60 60 gt 3 5 B 40 40 x 20 20 0 r 1 0 1 0 10 20 30 40 50 0 10 Ed 40 50 Speed RPS HT17 075 Max Duty cycle vs Speed nC Duty 2 vs ire 48 VDC 2 0 Amps 40 C Ambien
14. I E Hardwvare Manual ST5 Q ST10 Q ST5 Q E ST10 Q E ST5 Si ST10 Si ST5 C ST10 C Applied Motion Products 920 0004 Rev B 7 9 10 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Contents 3 EC OO O 3 rte tmb 4 DEL i uuu s UM EAE MD MUI 6 Gonnectindto ihe PC using RS 292 5 adim u u uu etm an Eoi dete E a o Un UR d pan 8 Connecting the Drive to Your PC using Eternel U l mtt tenete eeu 9 Addresses SUDNETS and POMS is nte e dotted 9 Option 1 Connect a Drive to Your Local Area Network 11 Wing DG orare coe toe m ree a S LUDUM Pe LE LE 13 Option 2 Connecta Drive Direct t0 Yout PO l aS iro mro ener t nte rem eer rena 13 Option 3 Use Two Network Interface Cards NICS 3 reme reiecit rte ttr tre ret 15 Connecting to a host using RS 4B5 Option Card tidie terit tre Red Dre Ed Det ER RE 17 85 292 0 RS 485 tet tee etus tien e ted edes 18 15 232 to RS 495 2 Wire CONVENED u tette ld c cet 18 Coriverting USB 105 485 ull sana te ee tela delete tetur ir 18 Connecting the Power Supply ttt ttti 20 Connecting the tte ttti 21 Connecting an Encoder Requires
15. LOG IN2 to PC MMI 24 80 VDC for ST10 T5 Q 5 5 ST10 Q and ST10 C 5 10 1 0 Hardware manual E s 24 48 VDC INPUT X1 INPUT X2 INPUT X3 INPUT X4 INPUT X5 INPUT X6 X7 CWLIM X8 CCWLIM OUTPUT Y1 OUTPUT Y2 OUTPUT Y3 to Ethernet switch OUTPUT Y4 or network interface ANALOG IN1 card ANALOG IN2 not used 24 80 VDC for ST10 ST5 Q EN ST5 Q EE ST10 Q EN 5110 0 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Getting Started This manual describes the use of six 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 a24 48 volt DC power supply 24 80VDC for ST10 models Please read the section entitled Choosing a Power Supply for help in choosing the right power supply a compatible step motor See section on Recommended Motors a small flat blade screwdriver for tightening the connectors included a personal computer running Microsoft Windows 98 2000 NT Me XP Vista or 7 The Applied Motion CD included An Applied Motion programming cable included with non Ethernet drives For Ethernet drives you will need a CAT5 cable not included If you ve never used an ST drive before you ll need to get familiar with the drive and the set up software before you try to deploy the system in your application We strongly recommend the following 1 For S driv
16. ace RJ11 connector RS 232 port LEDs status amp error codes DB 25 connector digital inputs digital outputs analog input grounding screw screw terminal connector motor power supply 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Connecting to the PC using RS 232 Locate your computer within 8 feet of the drive e f you have a CANopen drive you still need to connect to the RS232 port on your PC to configure the drive and download Q Programs if necessary Once configuration is complete refer to the CANopen Manual for information on using your CANopen drive e f you have an Ethernet drive this port is not used All communcation uses the RJ45 Ethernet connector 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 For 64 bit XP Vista and Windows 7 systems the recommended USB serial adapter is USB COM CBL from This adapter also works for 32 bit Windows sys
17. ain 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 5096 duty However one hour on and one hour off has the effect of 100 duty because during the first hour the motor will reach 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 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual 5014 842 Max Duty Cycle vs Speed 24 VDC 1 2A 40 C Ambient Mounted on 4 75 x 4 75 x 25 Aluminum Plate 100 80 2 5 60 gt a x 40 20 0 1 0 10 20 30 40 50 Speed RPS HT11 012 Max Duty Cycle vs Speed 24 VD
18. al Wiring a Mechanical Limit Switch 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 ST10 Q ST5 C and ST10 C CW LIMIT 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 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 T5 10 Si Q C Hardware manual Analog Inputs The ST drives feature two analog inputs Each input can accept 920 0004 Rev B 7 9 10 inside drive 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 Signal Conditioning that is proportional to the analog signal Signal Conditioning A shielded cable is recommended for electrically noisy environments I DB 25 Connector Use the ST Configurator software to set the signal range offset deadband and fi
19. ck Boxs web site Regeneration Cla Applied Moti Power supplies Applied Moti Applied Moti Applied Moti mp on Products RC050 on Products PS320A48 48 VDC 6 7 on Products PS150A24 24 VDC 6 3 on Products PS50A24 24 VDC 2 1A Operator Terminal Si drives only Applied Mot ion Products MMI 01 or MMI 02 backlit Recommended CANopen USB Adapter C drives only Kvaser LeafLight This adapter is not available from Applied Motion Products Alarm Codes In the event of an error the red and green LEDs on the main board will flash in alternating red green patterns as shown below The pattern repeats until the alarm is cleared Code solid green flashing green eo 1 eee 1 1 2 eeee 2 eoo0 3 0000 3 000000 3 00000 0000060 1 0000000 000000 5 0000000 0000000 5 00000000 00000000 7 000000000 7 000000000 3 Connector Diagrams red 1 green red 2 green red 3 green red 1 green red 2 green red 3 green red 1 green red 2 green red 3 green red 1 green red 2 green red 3 green red 1 green red 2 green red 1 green red 2 green red 1 green red 2 green red 1 green Error no alarm motor disabled no alarm motor enabled motor stall optional encoder only move attempted while drive disabled subroutine stack overflow Si only ccw limit cw limit subroutine stack underflow Si only drive overheating internal voltag
20. drive s maximum input voltage specification 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 Part Number HT11 012 HT11 013 5014 842 HT17 068 HT17 071 HT17 075 HT23 394 HT23 398 HT23 401 HT34 485 HT34 486 HT34 487 Recommended Motors T5 10 Si Q C Hardware manual Holding Drive Torque Current Setting oz in kg cm amps 7 0 0 50 1 2 15 0 1 08 1 2
21. e 23 1 2200 Wow f X7 CWLIM Ne mechanical switches Because the input circuits are isolated they require a source of power If you X8 CCWLIM j 25 are connecting to PLC you should be able to get X8ICCWLINOD power from the PLC power supply If you are using 1 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 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 sup ply 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 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual closed logic low Supply OED Connecting an Input to a Switch or Relay switch or relay DRIVE Connecting ano
22. e For 12 volt logic add 820 ohm 1 4 watt resistors e 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 PLC with Sourcing Outputs X2 DIR Connecting to PLC with Sourcing PNP Outputs Most PLC s use 24 volt logic 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual X2 DIR X2 DIR Sinking Outputs Connecting to PLC with Sinking NPN Outputs Most PLCS use 24 volt logic direction switch 2 DIR ENN V X2 DIR 2200 run stop switch closed run 2200 oO Using Mechanical Switches at 24 Volts 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Other Digital Inputs an driya As we mentioned in the previous section the high Reg AW speed STEP and DIR inputs are configured for five volt A i logic All other digital inputs are designed for operation 6 2200 AY between 12 and 24 volts DC ic g 5 2200 AV Single Ended Inputs Lk The ST drives include four single ended opti S cx 2200 cally isolated input circuits that can be used with Lo E CN 2 sourcing or sinking signals 12 to 24 volts This OXGICWLIM allows connection to PLCs sensors relays and
23. e 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 You should still connect one drives GND terminal to the host computer ground 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 to PC GND to PC RX to PC RX to PC TX to PC TX 99996 99 99996 RX TX GND RX TX GND RX TX GND Drive 1 Drive 2 Drive 3 RS 485 Four Wire System 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Two Wire Systems transmit and receive on the same pair of wires which can lead to trouble The 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 tran
24. e out of range blank Q segment power supply overvoltage power supply undervoltage bad instruction in Si program over current short circuit motor resistance out of range open motor winding bad encoder signal optional encoder only serial communication error flash memory error internal voltage out of range encoder 3 8 GND do not connect 9 N 2 encoder A Analog IN1 encoder B 4 7 5VDC 200mA Analog IN2 AMORIS do not connect 10 EA 1 encoder A X6 CCWJOG Y3 FAULT encoder Z 5 6 encoder Z X5 CWJOG our Alarm Reset GND 5 2 vat O GE o X2 DIR X7 CWLIMIT X2 DIR xi iig shield 15 N 11 do not connect xi SIEF do not connect 14 12 do not connect Front View DB 25 1 0 Connector do not connect 13 Front View HD 15 Encoder Connector RS 485 422 CANopen 5 zu Applied Motion Products Inc 404 Westridge Drive Watsonville CA 95076 Tel 831 761 6555 800 525 1609 Fax 831 761 6544 www appliedmotionproducts com
25. es install the ST Configurator software applications from the CD For Q drives install the ST Configurator and Q Programmer software applications from the CD For Q E drives install Ethernet Configurator and Q Programmer software applications For Si models install and use the Sj Programmer software for configuration and programming For C drives install the ST Configurator and the CANopen Example Program software applications from the CD Q Programmer software may also be installed if needed Launch the software by clicking Start Programs Applied Motion Connect the drive to your PC using the programming cable Connect the drive to the power supply Connect the drive to the motor Apply power to the drive The software will recognize your drive display the model and firmware version and be ready for action NOD amp CO PO 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual The connectors and other points of interest are illustrated below Depending on your drive model and appli cation you ll need to make connections to various parts of the drive These are detailed later in the manual screw terminal connector optional RS 485 port spring terminal connector and rotary switches optional CANopen interface HD 15 connector optional encoder feedback RJ45 connector and rotary address switch optional Ethernet interf
26. he following IP address address 10 10 10 11 Subnet mask 255 255 255 0 Default gateway 920 0004 Rev B 7 9 10 1 ST5 10 Si 0 G Hardware manual If you use a desktop PC and have a spare card slot install a second NIC and connect it directly to the NIC2 DRIVE drive using a CAT5 cable You don t need a special crossover cable the drive will automatically detect the direct connection and make the necessary physical layer changes If you use a laptop and only connect to your LAN using wireless networking you can use the built in RJ45 Ethernet connection as your second NIC Set the IP address on the drive to 10 10 10 10 by setting the rotary switch at 0 To set the IP address of the second NIC a On Windows XP right click on My Network Places and select properties b OnWindows 7 click Computer Scroll down the left pane until you see Network Right click and select properties Select Change adapter settings You should see an icon for your newly instated NIC Right click again and select properties a Scroll down until you see Internet Properties TCP IP Select this item and click the Properties button b On Windows 7 and Vista look for TCP IPv4 Select the option Use the following IP address Then enter the address 10 10 10 11 This will give your PC an IP address that is on the same subnet as the drive Windo
27. indows IP Configuration Ethernet adapter Local Area Connection Connection specific DNS Suffix noil IT TM RII N Subnet Mask Default Gateway ip le wea we 2 268 lt 8 254 If your PC s subnet mask is set to 255 255 255 0 a common setting known as a Class C subnet mask then your machine can only talk to another network device whose IP address matches yours in the first three octets The numbers between the dots in an IP address are called an octet For example if your PC is on a Class C subnet and has an IP address of 192 168 0 20 it can talk to a device at 192 168 0 40 but not one at 192 168 1 40 If you change your subnet mask to 255 255 0 0 Class B you can talk to any device whose first two octets match yours Be sure to ask your system administrator before doing this You network may be segmented for a reason Your drive includes a 16 position rotary switch for setting its IP address The factory default address for each switch setting is shown in the table on the next page 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual 8 s 9246809 _ 1092468043 _ Settings 1 through E can be changed using the ST Configurator software use Quick Tuner for servo drives Setting 0 is always 10 10 10 10 the universal recovery address If someone were to change the other settings and not write it down or
28. itch to the value B Please refer to the CANopen manual for more information 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Connecting the Power Supply If you need information about choosing a power supply please read Choosing a Power Supply located elsewhere in this manual Connect the motor power supply terminal to the driver terminal labeled V Connect power supply to the drive terminal labeled V Use 18 or 20 gauge wire The ST drives contain an internal fuse that connects 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 instal lation If the regen LED o
29. l All other digital inputs optically isolated 12 24V logic 2200 ohms Maximum current 10 mA Analog Inputs 10VDC 12 bit ADC 100k ohms internal impedance Outputs Photodarlington 100 mA 30 VDC max Voltage drop 1 2V max at 100 mA Physical 1 775 x 3 x 5 inches overall 10 oz 280 g Ambient temperature range 0 C to 40 C T5 10 Si Q C Hardware manual Mating Connectors and Accessories 920 0004 Rev B 7 9 10 Mating Connectors Motor power supply PCD P N ELV06100 included with drive IN OUT1 DB 25 Optional encoder 1 Not included Accessories Breakout Box for male AMP P N 5 747912 2 Shell Kit AMP P N 5 748678 3 Included feedback HD 15 male Norcomp P N 180 015 102 001 Shell Kit AMP P N 5 748678 DB 25 Connector BOB 1 includes cable Screw Terminal Connectors that mate directly to the DB 25 connector on the front panel of the drive Phoenix Contact P N 2761622 This connec tor 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 Useful for custom wired applications This shielded cable has a DB 25 connector on each end You ca n 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 fable color chart from Bla
30. lter frequency m DRIVE M M il Connecting a Potentiometer to Analog Input 1 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual Programmable Outputs IN OUT1 The ST drives feature four digital outputs These outputs can be set to automically control a motor brake to signal a fault YN condition to indicate when the motor is moving or to provide an output frequency proportional to motor speed tach signal 16 M dv Y Or the outputs can be turned on and off by program instructions ie lt like Set Output T a4 I 1 The outputs can be used to drive LEDs relays and the inputs 20 D of other electronic devices like PLCs and counters For the lt Y collector and emitter terminals of each transistor are available at the connector This allows you to configure this output for current sourcing or sinking The Y1 3 outputs can only sink current The Y 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 5 24 VDC Power Supply Yas IN OUT1 IN OUT1 YCOM n Sinking Output Sinking Output Using Y1 Y2 Y3 Using 4 920 000
31. n the RC050 never flashes you don t need the clamp RC050 Regen Clamp 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual Connecting the Motor Never connect or disconnect the motor while the power is on Four lead motors can only be connected one way Please follow the sketch at the right Red A A Six lead motors can be connected in series or center tap In lead series mode motors produce more torque at low speeds but motor cannot run as fast as in the center tap configuration In series op eration the motor should be operated at 30 less than the rated current to prevent overheating Winding diagrams for both con Yellow White nection methods are shown below NC means not connected B B 4 Leads Grn Wht a Grn Wht White White 6 per A lead Green motor motor Hs Green Red Red in B NC B B B 6 Leads Series Connected 6 Leads Center Tap Connected Eight lead motors can also be connected in two ways series and parallel As with six lead 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 3096 less than the unipolar rated current The motors recommended in this manual should be connected in parallel The wiring diagrams for eight lead motors are shown on following page 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual
32. ou can also email support applied motion com Features e Programmable microstepping digital step motor driver in compact package 5 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 Optional CANopen DSP402 Control Optional CANopen 05301 communication with 05402 motion control Optional 100 Mbit Ethernet communication using SCL and Q ST5 provides motor current up to 5 amps phase peak of sine ST10 provides motor current up to 10 amps phase peak of sine Fight optically isolated digital inputs Four optically isolated digital outputs Two 10 volt analog inputs for speed and position control Can also be configured for 010 10V 5V or 0 to 5V signal ranges 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Block Diagrams 24 48 VDC INPUT X1 INPUT X2 INPUT X3 INPUT X4 INPUT X5 INPUT X6 X7 CWLIM X8 CCWLIM OUTPUT Y1 OUTPUT Y2 OUTPUT Y3 OUTPUT Y4 ANALOG IN1 ANALOG IN2 5 485 to PC MMI 24 80 VDC for ST10 ST5 Si and ST10 Si 24 48 VDC INPUT X1 INPUT X2 INPUT X3 INPUT X4 INPUT X5 INPUT X6 X7 CWLIM X8 CCWLIM OUTPUT Y1 OUTPUT Y2 OUTPUT Y3 OUTPUT Y4 ANALOG IN1 CANopen Required on ST C Drives only or RS485 Optional on ST Q Drives only ANA
33. r drive doesn t care what that is when the first command is sent to the drive the drive will make note of the IP address and port number from which it originated and direct any responses there The drive will also refuse any traffic from other IP addresses that is headed for the eSCL port The first application to talk to a drive owns the drive This lock is only reset when the drive powers down If you need help choosing a port number for your application you can find a list of commonly used port numbers at http www iana org assignments port numbers One final note Ethernet communication can use one or both of two transport protocols UDP and TCP eSCL commands can be sent and received using either protocol UDP is simpler and more efficient than TCP but TCP is more reliable on large or very busy networks where UDP packets might occasionally be dropped Option 1 Connect a Drive to Your Local Area Network If you have a spare port on a switch or router and if you are able to set your drive to an IP address that is SWITCH or ROUTER compatible with your network and not used by anything else this is a simple way to get connected This technique also allows you to connect multiple drives to your PC If you are on a corporate network please check with your system administrator before connecting anything new to the network He or she should be able assign you a suitable address and help you get going If you are not sure
34. smit delay in a four wire system RS 232 to RS 485 2 wire Converter Model 485 25E from 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 pin to the ST drives TX and RX terminals Connect to the drives TX and RX terminals to PC GND to PC TX A to PC TX B 6 99996 RX TX GND RX TX GND TX GND Drive 1 Drive 2 Drive 3 RS 485 Two Wire System Converting USB to RS 485 The USB COMi M from is an excellent choice for USB to RS 485 conversion Sef SW1 to ON and SW2 4 to OFF On the USB COMI M screw terminal connector pint goes to RX and TX Connect pin 2 to RX and TX Pin 6 is ground The DB 9 is not used Assigning Multi Drop Addresses Before wiring all of the drives in a multi drop network 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 ST Contigurator software that came with your drive for this purpose Connect the drive to your PC then launch the ST Configurator software Finally apply power to your drive If you have already configured your drive then you should click the Upload button so that the ST Configurator settings match those of your drive Click on the Motion button then select the SCL operating mode If you have Q drive you may wan
35. t 2 0 Amps ient on 4 75 x 4 75 x 25 Aluminum Plate on 4 75 x 4 75 x 25 Aluminum Plate e a y 100 80 5 80 5 gt 60 40 40 20 20 0 i r 0 T T T T 1 0 10 20 30 40 50 0 10 20 30 40 50 Speed RPS Speed RPS T5 10 Si Q C Hardware manual 920 0004 Rev B 7 9 10 HT23 394 Max Duty Cycle vs Speed 24 VDC 3 4 Amps 40 C Ambient on 6 4 x 6 4 x 25 Aluminum Plate 100 h HT23 394 Max Duty Cycle vs Speed 48 VDC 3 4 Amps 40 C Ambient on 6 4 x 6 4 x 25 Aluminum Plate 100 80 80 60 5 66 8 40 gt amp 40 20 E 20 0 r 0 10 20 30 40 50 0 Speed RPS 0 10 20 30 40 50 Speed RPS HT23 398 Max Duty cycle vs Speed HT23 398 Max Duty cycle Speed 2 2 48VDC 5 0A 40 C Ambient 24VDC 5 04 40 C Ambient on 6 4 x 6 4 x 25 Aluminum Plate on 6 4 x 6 4 x 25 Aluminum Plate 100 r 100 80 60 60 2 40 a 40 x 49 20 0 r r 1 0 r 0 10 20 30 40 50 0 10 20 30 40 50 Speed RPS Speed RPS HT23 401 Max Duty Cycle vs Speed HT23 400 Max D Speed 24 VDC 5 0 Amps 40 C Ambient ax Duty cycle vs Spee 6 4 x 6 4 x 25 Aluminum Plate 48 VDG 5 0 Amps 40 Ambient 5
36. t to select Q Programming Either way you ll see the 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual RS 485 Address panel appear Just click on the address character of your choice You can use the numer als 0 9 or the special characters amp lt gt 7 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 Down load to save the settings to your drive Assigning CANopen Addresses Each node on a CANopen system must have a unique Node ID Valid ranges for the Node ID are 0x01 through Ox7F Node ID 0x00 is reserved in accordance with 05301 The Node ID is selected using two rotary switches one sixteen position switch and one eight position switch The sixteen position switch is located just to the left of the CANopen connector The eight position switch is located inside the drive and may only be accessed by removing the cover of the drive It is recommended that the internal switch be left at the fac tory default setting 0 However if additional Node IDs are required it is possible to access them using the internal switch The Node ID is a concatenation of the two switch values To set the Node ID to 0x3B for example turn the internal eight position switch to the value 3 and the sixteen position sw
37. tell anyone I m not naming names here but you know who l m talking about then you will not be able to communicate with your drive The only way to recover it is to use the universal recovery address Setting F is DHCP which commands the drive to get an IP address from a DHCP server on the network The IP address automatically assigned by the DHCP server may be dynamic or static depending on how the administrator has configured DHCP The DHCP setting is reserved for advanced users Your PC or any other device that you use to communicate with the drive will also have a unique address When you launch an Applied Motion Ethernet ready software application it will display the IP address of your PC on the title bar On the drive switch settings 1 through E use the standard class B subnet mask i e 255 255 0 0 The 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual mask for the universal recovery address is the standard class A i e 255 0 0 0 One of the great features of Ethernet is the ability for many applications to share the network at the same time Ports are used to direct traffic to the right application once it gets to the right IP address The UDP eSCL port in our drives is 7775 To send and receive commands using TCP use port number 7776 You ll need to know this when you begin to write your own application You will also need to choose an open unused port number for your application Ou
38. tems For laptops a PCMCIA converter card is good choice Our applications engineers use the SSP 100 from Sewell Direct ground to PC ground RX to PC TX TX to PC RX No connection Pin Assignments of the PC MMI Port RJ11 connector 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manual Connecting the Drive to Your PC using Ethernet This process requires three steps e Get the drive physically connected to your network or directly to the PC Set the drives IP address e Set the appropriate networking properties on your PC Note the following pages are an excerpt from the eSCL Communication Reference Guide For more information please read the rest of the guide Addresses Subnets and Ports Every device on an Ethernet network must have a unique IP address In order for two devices to communi cate with each other they must both be connected to the network and they must have IP addresses that are onthe same subnet A subnet is a logical division of a larger network Members of one subnet are gener ally not able to communicate with members of another unless they are connected through special network equipment e g router Subnets are defined by the choices of IP addresses and subnet masks If you want to know the IP address and subnet mask of your PC select Start All Programs Accesso ries Command Prompt Then type ipconfig and press Enter You should see something like this W
39. tep amp direction commands or encoder following 5 volt logic e digital inputs for other signals 12 24 volt logic e analog inputs for analog speed and positioning modes drives include eight digital inputs and two analog inputs CW amp CCW Limit can be used to inhibit motion in a given direction forcing the motor and load to travel ithin mechanical limits Can be configured for active closed active open or not used INT STEP amp IN2 DIR digital signals for commanding position Quadrature signals from encoders can 50 be used These inputs can also be connected to sensors switches and other devices for use with Q and commands such as Wait Input Seek Home Feed to Sensor If Input and others IN3 4 5 6 software programmable inputs can be used for motor enable alarm reset or jogging These in puts 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 and other commands e Analog In analog velocity or position command signal Can be configured for 0 10V 0 5V 10V 5 with or without offset 2 Connector Pin Diagram Analog IN1 Y1 BRAKE Analog ING Y2 MOTION X6 COWJOG X5 CWJOG QUT X4 Alarm Reset GND Enable Y4 X COMMON M Xo DB X7 CWLIMIT X7 CWLIMIT X8 CCWLIMIT X8 CCWLIMIT GND Front View IN OUT1 DB 25 Connector 920 0004 Rev B 7 9 10 T5 10
40. ther Si drive to the ST When output closes input goes low I I I VDG NPN i Power Proximity I I gods DRIVE ee a E Connecting an NPN Type Proximity Sensor to an input When prox sensor activates input goes low T5 10 Si Q C Har ca eee dware manual Connecting a PNP Type Proximity Sensor to a an input When prox sensor activates input goes low 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 differen tial 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 920 0004 Rev B 7 9 10 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 b 22 CXTICWLIM AAA 23 1 CXI CWLIM gt 24 1 X8 CCWLIM elow 920 0004 Rev B 7 9 10 T5 10 Si Q Hardware manu
41. which addresses are already used on your network you can find out using Angry IP scanner which can be downloaded free from http www angryip org w Download But be careful an address might appear to be unused because a computer or other device is currently turned off And many 920 0004 Rev B 7 9 10 T5 10 Si Q C Hardware manual d networks use dynamic addressing where a DHCP server assigns addresses on demand The address you choose for your drive might get assigned to something else by the DHCP server at another time Once you ve chosen an appropriate IP address for your drive set the rotary switch according the address table above If none of the default addresses are acceptable for your network you can enter a new table of IP addresses using Configurator f your network uses addresses starting with 192 168 0 the most common subnet you will want to choose an address from switch settings 4 through E Another common subnet is 192 168 1 If your network uses addresses in this range the compatible default selections are 1 2 and 3 If your PC address is not in one of the above private subnets you will have to change your subnet mask to 255 255 0 0 in order to talk to your drive To change your subnet mask 1 OnWindows XP right click on My Network Places and select properties On Windows 7 click Computer Scroll down the left pane until you see Network Right click and select properties Select
42. ws will know to direct any traffic intended for the drive s IP address to this interface card Next enter the subnet mask as 255 255 255 0 Be sure to leave Default gateway blank This will prevent your PC from looking for a router on this subnet Because you are connected directly to the drive anytime the drive is not powered on your PC will annoy you with a small message bubble in the corner of your screen saying The network cable is unplugged 920 0004 Rev B T5 10 Si Q C Hardware manual Connecting to a host using RS 485 option card 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 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 Systems utilize separate transmit and receive wires One pair of wires must connect the host computer s transmit signals to each drive s RX and RX terminals Another pair connects th
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