Instruction/ maintenance manual of the product DCB-274 AMS
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REVISION DATE: 07/05/0 6 DCB - 274 USERS GUIDE www.stepcontrol.com Nashua, NH 03063.
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REVISION DATE: 07/05/0 6.
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ADVANCED MICRO SYSTEMS, INC. DCB - 274 USERS MANUAL i Table of Contents Hardware Introduction ............................................................................................................................. 1 Product Overview ............
ADVANCED MICRO SYSTEMS, INC. DCB - 274 USERS MANUAL ii T (Trip Point) ......................................................................................................................... 49 V (Set Slew Speed) .....................................
ADVANCED MICRO SYSTEMS, INC. HARDWARE 1 Introduction Thank you for using a DCB - 274 Stepper Motor Driver/Controller from ADVANCED MICRO SYSTEMS, INC. This unit is designed to provide years of reliable, accurate and cost - effective motion control.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 2 Product Overview The DCB - 274 combines efficient bi - polar chopper Driver circuitry with AMS’ new, powerful SMC - 27X2 Micro - co ntroller on a single, heat sink mounted board, to operate small to mid - size stepping motors.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 3 Required Hardware for Operation Qty Unit Model # Description 1 Axis DCB - 274 Driver - Controller Board 1 System User defined +24 to 40Vdc power supply 1 Axis S.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 4 Out of t he Box – Quick Start The DCB - 274 is supplied with mating motor, power supply and I/O connectors. The SIN - (n) (chosen serial adapter) is supplied with a mating cable and terminator, if required. Equipment Check List 1.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 5 After Sign - on Enter X<CR> The parameters are displayed. The last characters displayed will be “n= “ followed by the axis “name” character, usually “A.” To change the name: 1. Turn off power, allow discharge.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 6 “Do’s, Don’ts and Important Notes” • NEVER connect or disconnect motor wires while power is supplied.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 7 Multi - axis Serial Interface Connection DCB-274 #1 DCB-274 #”N” SERIAL INTERFACE ADAPTER SIN-8 OR SIN-10 BLC-51-XX INTERCONNECT CABLE SERIAL IN SERIAL OUT TERMINATOR PLUG I.O. Connections (J1, J4) The DCB - 274 has a robust set of input and output signals.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 8 Pin 7 - VIO Reference Input This signal defines the input and output voltage range. A “default” voltage of 4.6 volts is derived from the internal +5 - volt supply, via a diode . Any external load must be limited to several mA.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 9 Typical User Input Circuit (Step, Direction, Ports 1, 2, 3, 4 (used as an input), Jog (3), Limits, Home, Go and Soft Stop) Output Ports Two user outpu t ports are provided on the DCB - 274 with a power FET output circuit capable of sinking up to 2 amps DC.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 10 As an output (as shipped) the signal can be redefined as a stepping pulse output with the “l 2” (lower case L) command. This also defines P5 as a direction output signal. Port 5 Port 5 is an output port/driver, rated at 2 - amps.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 11 Step and Direction Inputs (J1) A 10k pull - up resistor allows open - collector circuits to be used. The inputs will withstand in excess of 24 volts.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 12 Typical Wiring Diagrams for Step Motors Fig. A: Series winding for higher torque and lower current. The inductance is 4 times that of the parall el mode, reducing the maximum obtainable speed. Fig. B: Parallel winding for better high - speed performance but requires higher drive current.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 13 Specifications Electrical Output Current (maximum)………………. 4.0 Amps Chopping Frequency...................…………... 20kHz Supply Volt age............................…….……. +24 to 40 Vdc Motor Step Resolution.
ADVANCED MICRO SYSTEMS, INC. HARDWARE 14 Physical Dimensions PWR / MTR 7 PIN 1/O 12 PIN I/O SERIAL IN SERIAL OUT Heat sink mounting bracket 2.50 4.13 0.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 15 Overview This Application covers the serial communication design for ADVANCED MICRO SYSTEMS, INC. (AMS) intelligent control products. These products include complete packaged systems, OEM boards, su b - assemblies, and I.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 16 Single axis, RS - 232 connection using AMS SIN - 7 adapter The other method, called “daisy chain,” is for multi - axis applications and is NOT recommended by AMS. Daisy chain is accomplished by interconnecting one or more axis in “series.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 17 RS - 422 (Party Line) Hardware AMS “Party Line” communication is an RS - 422 design that uses RS - 485 rated circuits.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 18 AMS offers two adapters to facilitate party line connect; models SIN - 8 and SIN - 10. The SIN - 10 costs slightly more but is so powerful that the software programming is simplified. Some operating systems (Windows 2000) are close to impossible to program properly.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 19 SIN - 10 Intelligent Serial Adapter The SIN - 10 is an intelligent serial line converter that simplifies application software development and improves overall performance. Dual, independent UARTS (COM ports) permit spooling commands at rates between 1200 and 115k baud.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 20 4. Party Select (pin 8). Each axis tests this inp ut after reset (power up or in response to a ^C command) to determine either single or party line mode. Single mode (ONLY one axis connected) is used for debug, programming for stand - alone use or assignment of party line “name”.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 21 Operating systems like Windows NT and Windows 2000 prevent programmers from direct access of the hardware. The programmer is forced into passing instructions via “mail - boxes” to perform I/O functions, a slow and inefficient process.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 22 3. Strike the SPACE BAR key. The controller should sign on with the software version number Vx.xx. If not, enter a (^C) (Reset) and strike the SPACE BAR key again. The “reset” message is generated by easi.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 23 Axis Name Assignment Whenever the application is controlled via a “hos t” computer the proper protocol (handshake) MUST be used. Either the programmer must write the necessary serial, echoed character - by - character software (driver), or implement a SIN - 10 for the proper handshake.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 24 The initial input sequence MUST be a Line Feed (LF) characte r followed by a valid “name” character in the standard ASCII collation sequence. Once the recognized sequence is received, the controller will assume the name until a hardware reset is made.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 25 Edit Program Example: It is desired to change instruct ion number 21 from 500 steps to 5,000 steps: Enter Remark P21<CR> Edit instruction 21. R5000 Move 5,000 steps in the “+” direction, relative to Origin.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 26 The party line sequence can be sent using the dumb terminal. Caution must be used because any typo’s cannot b e corrected with a backspace, as is possible in the single axis mode. You must cancel with the ESCape and start over.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 27 Anatomy of Instruction Execution This information is intended to familiarize the programmer with the internal operations involved in executing a command. For each MOTION command there are four cycles; Entry, Execution, Result, and Completion.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 28 Interrupt Commands Interrupt commands are single character commands that will interrupt the operation in process as follows: Abort Any action command may be terminated using the ESCape character . Process Resulting Action Command line input Clear input buffer.
ADVANCED MICRO SYSTEMS, INC. SERIAL INTERFACE 29 Q ueued Index Cycle Resulting From +, - , R Commands Constant Velocity Cycle Resulting From M Command Constant Velocity Cycle From 2nd M Command Execut.
ADVANCED MICR O SYSTEMS, INC. SERIAL INTERFACE 30.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 31 Non - Volatile Memory Detai ls The SMC - 27X2 uses the X24C16, a 2048 byte EEPROM. A worst case of 4 bytes per instruction yields a capacity of 500 commands. These devices are rated to retain data for 100 years.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 32 Default Table The following default values are written to NV memory after the ‘Clear’(C 1) command: Parameter Value Initial Velocity (I) 800 SPS.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 33 Command Format Description Function Type NV Bytes Command Mne monic Data 1 (Range) Data 2 (Range) Result Where: Command: Keystroke Function: Functio.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 34 An example of this command within a program in conjunction with the Loop on Port command as explained later is: P 0 Enter program mode. M 2000 Move at a con stant step rate of 2000 SPS. L0 0 Loop to memory address location 0 until port 1 is low.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 35 The PLC option flag 8 has no affect on the output behavior. Port 4 as an output (as shipped): 1. Install JP1and JP2 in off (storage) position. 2. Ins ure that P4 input option flag 32 (“ l ” command) is off.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 36 Function Type NV Bytes Set Jog Speeds Default, Immediate, Program 3 Command B Mnemonic (Name) B (n1, n2) Data 1 Slow Speed (0 - 255) Data 2 High Speed (0 - 255) Result None B (Set Jog Speeds) These two numbers represent the speeds to use for jog inputs.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 37 Multiple variables that interact include: • Operating step speed range • Step resolution • Motor size and characteristics • Load inertia and.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 38 Function Type NV Bytes Find Home Immediate, Program 3 Command F Mnemonic (Name) F (n, d) Data 1 SPS (40 - 36,000) Data 2 Direction (0,1) Result None.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 39 If “t” is a one, the TRACE mode is turned on. A display of the current step being executed is produced while the program is running.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 40 Function Type NV Bytes Set Step Size Resolution Default, Immediate, Program 2 Command H Mnemonic (Name) H (n) Data 1 0 - 5 Data 2 None Result N one H (Step Resolution) This command selects step size resolution.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 41 Function Type NV Bytes Restart Special Trip Default, Program 5 Command i Mnemonic (Name) i (n) Data 1 Next Trip Position ±8,388,607 Da ta 2 Port (0 - 63)* Result None i (lower case I ; Restart Special Trip ) See lower case “k” command.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 42 The following two examples are of ra mped indexes, each 2000 steps with I=400, V=5000, but different “K” values; K50 5 and K5 5: Note: The default value of "K" is 5 (Accel), 5 (Decel).
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 43 128 k 400 0 Set new trip at 400 and turn ports off. 133 k 600 16 Set new trip at 600 an d turn port 5 on. 138 i 200 8 Reset origin, RAM=128, port 4 on. 143 P 0 End program. S Save the shadow RAM program.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 44 Function Type NV Bytes Loop on Port Program 3 Command L Mnemonic (Name) L (a, c) Data 1 0 - 2048 Data 2 Condition (0 - 9) Result None L (Loop on Port) Loop on Port will test the specified input port for the requi red condition (c).
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 45 Two or more flags can be specified for multiple options, i.e., flag 1 + flag 8= 9. So, command “ l 9” will invert limits and set PLC mode. When reading flag s, the host software must convert decimal to binary to evaluate the results.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 46 Port 4 Input (Flag 16) This flag informs the controller that Port 4 is to be used as an input. Jumpers JP1 and JP2 must be set accordingly. The commands; read inputs (A129), branch (G 2048) and loop (L n) will use this input port.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 47 Function Type NV Bytes Set Origin Immediate, Program 4 Command O Mnemonic (Name) O Data 1 Position (±8,388,607) Data 2 None Result None O (Set Origin) This command sets the internal 24 - bit position counter to the specified value.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 48 Function Type NV Bytes List Program Immediate N/A Command Q Mnemonic (Name) Q (a) Data 1 Address (0 - 2047) Data 2 None Result Listing Q (List Program) ( Note: Use in dumb terminal, single line mode).
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 49 Function Type NV Bytes Save Parameters to NV Memory Immediate 1 Command S Mnemonic (Name) S Data 1 None Data 2 None Result None S (Save) The following parameters are saved in the NV mem ory and will be recalled as defaults during power - on reset: 1.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 50 2. Write program to location 100. P100 Enter program mode at address 100. 100 A129 Read port states . 102 A0 Turn port 4 off. 104 P0 Exit program mode. 3. Set Trip Point. In “dumb terminal” mode enter T1000 100.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 51 Function Type NV Bytes Wait (n) Milliseconds Immediate, Program 3 Command W Mnemonic (Name) W (n) Data 1 10 ms. (0 - 65,535) Data 2 None Result None W (Wait) The co ntroller will remain in an idle state for the specified time.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 52 The controller will remain in an idle state for the specified time. The Wait command, if issued while indexing (as a result of an R, +, - , or F command), timing will NOT start until the motion has completed.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 53 The following procedure is used to access the independently programmable "Hold" and "Run" current feature: 1. Issue the "Y" command to program the desired current values.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 54 Function Type NV Bytes Read NV Memory Immediate N/A Command [ Mnemonic (Name) [ Data 1 Address (0 - 2047) Data 2 Sequential Bytes (0 - 255) Result Displayed Values [(Read NV Memory) The user may display any byte of the 2047 byte exter nal NV memory.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 55 Function Type NV Bytes Index in Plus Direction Immediate, Program 4 Command + Mnemonic (Name) + (n) Data 1 Steps (0 - 16,777,215) Data 2 None Result None + (Index in Plus Direction) Step in the positive direction for the specified step count.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 56 Function Type NV Bytes Read Moving Status Immediate, Program 1 Command ^ Mnemonic (Name) ^ Data 1 None Data 2 None Result Status ^ (Read Moving Status) The host may use this command to deter mine the current moving status that exists within the SMC - 27X2.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 57 Function Type NV Bytes Terminate Program Immediate 2 Command Mnemonic (Name) Data 1 Data 2 Result Status Byte | (Selective Terminati on) This comman.
ADVANCED MICRO SYSTEMS, INC. SMC - 27X2 SOFTWARE 58 Function Type NV Bytes Rest art in Party Line Mode None N/A Command ^P Mnemonic ^P Data 1 None Data 2 None Result None ^P (Party Line Mode) Response to the single character “Ctrl P” (16 decimal, 10 hex) is immediate.
ADVANCED MICRO SYSTEMS, INC. ADDENDUM 59 Command Summary MNEMONIC / COMMAND DATA 1 RANGE 1 DATA 2 RANGE 2 NV D I P + INDEX IN "+" DIRECTION STEPS 1 - 16,777,215 4 ¤ ¤ - INDEX IN " - &.
ADVANCED MICRO SY STEMS, INC. ADDENDUM 60 ASCII Character Code Ctrl Char Dec Hex Code Dec Hex Char Dec Hex Char Dec Hex Char ^@ 00 00 NUL 32 20 64 40 @ 96 60 ` ^A ? 01 01 SOH 33 21 ! 65 41 A 97 61 a ^.
ADVANCED MICRO SYSTEMS, INC. ADDENDUM 61 About Step Motor Current There is much confusion regarding the operation of step motors. Depending on your application, the step motor offers several advantages over servo motor designs, including lower cost and simplicity.
ADVANCED MICRO SY STEMS, INC. ADDENDUM 62 A current sense circuit is used to switch off the current when it reaches the set value; hence t he motor power is regulated. These “chopper“ circuits operate at speeds above 20khz, well above hearing limits.
ADVANCED MICRO SYSTEMS, INC. ADDENDUM 63 AMPS and Wire Count and Power The rated current is specified based on the rated power input (watts) of a given motor. A. Basic 8 Wire Motor While never actually used as 8 individual coils, virtually all permanent ma gnet motors have 4 internal coils.
ADVANCED MICRO SY STEMS, INC. ADDENDUM 64 C: Adapting Available 6 Wire Motors A 6 - wire motor is equivalent to the 4 - wire series motor. In practice the two coil ends are connected, while no connection is made to the center tap. Half Cop per or 50% Winding The maximum speed can be increased by using ½ the coil.
ADVANCED MICRO SYSTEMS, INC. ADDENDUM 65 Application Notes V1.10 Double Speed Characteristics The X2 speed (Version 1.10) introduces several new characteristics: 1. Step rates in excess of 36K steps per second. 2. Faster command execution. 3. Intelligent current decay control.
ADVANCED MICRO SY STEMS, INC. ADDENDUM 66 Serial Adapter Summary AMS offers several serial adapters. Th ese are used to connect a standard computer RS - 232 “D” connector to the serial I/O on AMS controllers (axis). Four, model SIN - “n” adapters are currently available, as follows.
An important point after buying a device AMS DCB-274 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought AMS DCB-274 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data AMS DCB-274 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, AMS DCB-274 you will learn all the available features of the product, as well as information on its operation. The information that you get AMS DCB-274 will certainly help you make a decision on the purchase.
If you already are a holder of AMS DCB-274, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime AMS DCB-274.
However, one of the most important roles played by the user manual is to help in solving problems with AMS DCB-274. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device AMS DCB-274 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
