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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Product Specifications ............................................................................................................... 3 Safety Warnings......................................................................................................................... 5 Electrical Connections ............................................................................................................... 6 OPERATION MODES ............................................................................................................... 8 4.1 External Control (step-dir) (Setting: SW1- 4 : ON) .......................................................... 8 4.1.1 I/O Connection External Control / 24V / PNP ....................................................... 10 4.1.2 I/O Connection : External Control / 5V / PNP ...................................................... 11 4.1.3 I/O Connection : External Control / 24V / NPN ................................................... 12 4.1.4 I/O Connection : External Control / 5V / NPN ..................................................... 13 4.2 Command/Response (setting: SW1- 4 : OFF)............................................................... 14 4.3 User Programming (SW1-4 : OFF) ................................................................................. 18 4.3.1 I/O Connection : Internal Control / 24V / PNP..................................................... 19 4.3.2 I/O Connection : Internal Control / 24V / NPN .................................................... 20 4.3.3 I/O Connection : Internal Control / 5V / PNP....................................................... 21 4.3.4 I/O Connection : Internal Control / 5V / NPN ...................................................... 22 4.3.5 Rotary Encoder Connection *................................................................................. 23 4.3.6 RS232 Programming Cable...................................................................................... 23 5 Precautions for stepper motors ............................................................................................... 24 1 2 3 4
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
1 Product Specifications
Features*
Type Axis Motor Current Supply Voltage Over current protection Over Temperature Protection Motor current adjustment Microstep adjustment Microstep 2-Phase Stepper Motor Driver 1 6.9 A 18 60 Vdc Fuse 8A 85 °C 16 different selection, DIP switch 8 different selection, DIP switch 1/1, 1/2, 1/4, 1/5, 1/8, 1/10, 1/16, 1/25 External Drive with Step/dir step direction enable signals inputs RS232 command mode Internal operation User programming mode 50 Khz (max) 6 optoisolator, configured PNP/NPN 2 optoisolator, PNP (24V @15mA) Potentiometer > 5K 2 0-10V, 0-5V ( optional ) 0/4 20 mA ( optional ) RS232 1 RS485 ( optional ) USB 2.0 ( optional ) Green : Power LED Red : Alarm 2-phase, 4-quadrature, line driver STEMO-PS Programming Software Windows-XP, Windows VISTA 145 x 50 x 106 [mm] (Heigth) (Width) (Depth) 16-circuits I/O Cable, 25-circuits I/O Cable, RS232 Cable, USB Cable
Operation modes
Step(clock) Frequency Logic Input Logic Output Analog input
Communication Port Display Rotary Encoder Connection (optional) PC Interface Software Mechanical sizes Accessory (optional)
(*) Features unless denoted with "optional" are standart features.
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Electrical Specifications
Feature
Motor Supply Voltage Motor phase current (sinus peak) Short circuit current (drawn power supply) Over temperature protection Pulse (clock) frequency Pulse input active level - PNP , 24V Pulse input active level - PNP , 5V Logical input active level - PNP , 24V Logical input active level - PNP , 5V Logical output active level Logical output current Analog input resolution Analog input type - Potentiometer Analog input Current sense resistance Analog input 0-5V/10V input resistance Rotary Encoder supply voltage Rotary Encoder frequency Motor speed 1/1 1/10 (1.8° Step Motor) 1/16 1/25
Min.
18
Max.
60 6.9
Unit
Vdc A A
8 0 12 3 12 3 18 8 5 100 250 10 10 13 1 0 0 0 1500 1200 750 85 50 26 6 26 6 22 15
°C KHz Vdc Vdc Vdc Vdc Vdc mA bit K
K Vdc MHz rpm rpm rpm
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Mechanical Sizes
2 Safety Warnings
· · · Driver should not operate in the areas where the explosive gases, corrosive and asidic substances are exist. Driver should be mounted by authorized personnel. Otherwise there are risk of fire, electrical shock or injury. Since there is no torque produced by the motor when the driver power is off, the parts on the machinery may drop, hit or rotate unvoluntarily. Therefore be sure that the dangereous parts are fixed in their safe locations before power is off. Motor connection should not plugged or unplugged while driver is enegized. During the operation driver/motor set, the surface temperatures may be rised up to 75 80 °C. Therefore the appliances that sensitive to heat should not place close to driver/motor set.
· ·
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
3 Electrical Connections
STEMO
Alarm Power
J3 INPUT/OUTPUT CONNECTOR
Multi I/O
ORIENTAL MOTOR (VEXTA) COLORS
J2 RS-232 CONNECTOR (USB*)
Comm.
Shield
B B
Red--Brown
6 5
Blue-White Black-Orange Yellow-Green
VDC+ GND
2
J1 MOTOR CONNECTOR
!
A A
4
3
M
STEPPER MOTOR
1
Smart Stepping motor driver
60VDC (MAX)
MODE/ MICROSTEP
MOTOR CURRENT
·
Be sure that supply voltage is not greater than 60V, when unregulated sources is used at the worst mains cases.
(*)USB type- B connector for Stemo drivers with USB com.
·
Supply power [watt] = 4**Max( torque[Nm] * speed[rpm] )/60.
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
J3 26-Pin Multi I/O Connector
Pin Nr. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Cable color External Control Internal Control Function Input-1 / Enable Input -2 / Direction Input -3 Input -4 Input -5 Input -6 +12V, Encoder Supply Encoder input B(+) Encoder input A(+) Common Input 24V GND Output-1 Output -2 +5V, Potentiometer Supply Common Input 5V GND Encoder input B(-) Encoder input A(-) +24V Step(Clock) + (5V) Step(Clock) Common Step(Clock) + (24V) +5V, Potentiometer Supply Analog input -2 Analog input -1 GND
Green Blue Green-Brown Green-White Yellow-White Gray-Pink Red-White Blue-White Black- White Gray Gray-Brown Red - Blue Yellow - Brown Brown White Pembe- White Gray - White Red Yellow Purple Pink Pink - Brown Red - Brown Yellow Blue - Brown Purple Black
Cable cross 0.22 mm².
J1 6-Pin Motor Connector
Pin Nr. 1 2 3 4 5 6 Function GND VDC+ : Motor Supply Voltage Motor coil : A Motor coil : A + Motor coil : B + Motor coil : B -
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4 OPERATION MODES
Operation Modes
External Control (step-dir) SW1-4 : ON
· step, enable, direction signals are driven by external controller such as PLC, PC. · SW1:1-3 selects microstep. · SW2 selects motor current.
Internal control SW1-4 : OFF
Command/response
· Stemo executes simple commands come from RS-232 port.
User Program
· User programs are executed. Stemo-PS interface software is used to develope the user program. · Driver is controller as well.
4.1
External Control (step-dir) (Setting: SW1- 4 : ON)
In the external control mode, electronic unit operates as motor driver. In this case some inputs have dedicated functions: · Step (Input-1) input is used to rotate the motor step by step. · Enable (Input-2) input is used to enable or disable the motor movement. If Enable signal is active, phase currents are enabled, otherwise phase currents are zero. Step signals are ignored when the Enable is inactive. · Direction (Input-3) input is used to set the rotation direction. In the external control mode; Microstep setting is done by SW1:1-3. See the Table-1. Motor current setting is done by SW2. See the Table-2. Refer to the sections 4.1.1- 4.1.4 for the multi I/O connections.
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Tablo 1: Microstep Selection Table SW1
1 ON OFF ON OFF ON OFF ON OFF 2 ON ON OFF OFF ON ON OFF OFF 3 ON ON ON ON OFF OFF OFF OFF 4 ON ON ON ON ON ON ON ON Microstep 1/1 (full step) 1/2 1/4 1/5 1/8 1/10 1/16 1/25 step/revolution * 200 400 800 1000 1600 2000 3200 5000
(*) For 1.8° Stepper motor.
Tablo 2: Motor Current Selection Table SW2
1 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 2 ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF 3 ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF 4 ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF Phase current [A] ** 0.4 0.9 1.3 1.8 2.2 2.6 3,1 3,5 3,9 4,4 4,8 5,2 5,7 6,1 6,5 6.9
(**) Peak value of sinus shaped current. () Current sense resistor, R=0.05 .
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.1.1
I/O Connection External Control / 24V / PNP
I/O External Control, 24V, PNP Input (step / direction)
Pin Nr. 1 2 10 19 21 22 26 Color Green Blue Gray Red Purple Pink(Orange) Black Function Enable (Input-1) Direction (input-2) Common Input - 24V +24V Step(Clock) Step (clock) + (24V drive) GND
Cable cross 0.22 mm².
External 24V Supply, Active High, PNP
Controller Stemo Driver
Internal 24V Supply, Active High, PNP
Controller Red
19 10
Stemo Driver
Gray
10
Gray Enable
Green
1
Green
Enable
1
+
24V Blue
2
Direction Blue
2
Dir
24V Pink
22
+
Pink Step Purple GND Black
22
Purple Black
Step
21 26
21 26
GND
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.1.2
I/O Connection : External Control / 5V / PNP
I/O External Control, 5V, PNP (step / direction)
Pin Nr. 1 2 14 15 20 21 26 Green Blue Brown White Yellow Purple Black Color Function Enable Direction +5V Common input : 5V Step + (5V drive) Step GND
Cable cross: 0.22 mm².
External 5V Supply, Active High, PNP
Controller Stemo Driver
Internal 5V Supply, Active High, PNP
Controller Brown
14 15
Stemo Driver
White
15
White Enable
Enable Green
1
Green
1
+
5V Blue
2
Dir Blue
2
Dir
5V Yellow
20
+
Yellow Step
20
Step Purple
21 26
Purple Black
21 26
GND
Black
GND
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.1.3
I/O Connection : External Control / 24V / NPN
I/O External Control, 24V, NPN (step / direction)
Pin Nr. 1 2 10 19 21 22 26 Green Blue Gray Red Purple Pink Black Color Function Enable Direction Common input 24V +24V Step Step + (24V drive) GND
Cable cross: 0.22 mm².
External 24V Supply, Active Low, NPN
Controller Stemo Driver
Internal 24V Supply, Active Low,NPN
Controller Red
19 10
Stemo Driver
Gray
10
Gray Enable
Enable Green
1
Green
1
+
24V Blue
2
Dir Blue
2
Dir
+
24V Pink
22
Pink Step
22
Purple
21
Purple
21
Step GND
Black
26
Black
26
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.1.4 I/O Connection : External Control / 5V / NPN
I/O External control, 5V, NPN (step / direction)
Pin Nr. 1 2 14 15 20 21 26 Green Blue Brown White Yellow Purple Black Color Function Enable Direction +5V Common Input ( 5V ) Step + (5V drive) Step GND
Cable cross : 0.22 mm².
External 5V Supply , Active Low,NPN
Controller Stemo Driver
Internal 5V Supply, Active Low, NPN
Controller Brown
14 15
Stemo Driver
White
15
White Enable
Enable Green
1
Green
1
5V
+
Blue
2
Dir
Blue
2
Dir
+
5V Yellow
20
Yellow Step
20
Purple
21
Purple
21
Step
Black
26
Black
26
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.2
Command/Response (setting: SW1- 4 : OFF)
Command/response mode operation is achieved by reponding simple commands from RS232 communication port. The Driver executes predefined tasks such as, run, stop, move definite steps, change direction, and some parameter settings. PC Settings The communication interface program has to be adjusted as the following: Connection speed Data Parity Stop bit : 9600 bps (baud) : 8 bit : No :1
Sample interface program : Hyperterminal.exe (embedded in Windows XP) · · Find the com port number on the PC, then adjust the Hyperterminal com port number. Hyperterminal : Settings: ASCII Setup : o Select "Send line ends with line feeds", o Select "Echo typed charecters locally" , o Line delay is 3 msec, o Character delay is 3 msec.
Command Format [] CR = 0D(hex), LF = OA(hex).
· ·
If command requires a parameter, enter numeric ascii characters defining the value. If command requires a parameter but parameter is not entered, driver responds current parameter value (the way to learn driver's parameter value).
The Driver accepts commands directly entered on hyperterminal consol. All commands consist of three ASCII characters terminated with Carriage Return and Line Feed character (simply Enter key with settings above). Command characters are entered by pressing the keys. There is no time restriction between characters. When Enter key is pressed, driver checks the keys and if there is a match with internal commands, it is executed.
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
HLP command lists the available commands and usage.
### ELDES ELEKTRONIK STEP MOTOR DRIVER PROGRAM NAME:STEMO V:2.01 ### ########################################################### RUN :Start the motion. STP :Stop the motion. TGP[d] :Ask/set the displacement. 0
Commands Setting Motor Speed in [rpm] : SPDddddd
ddddd : Motor speed in [rpm] x 10. Range: 1- 15000. 1 means 0.1 rpm, 15000 means 1500.0 rmp Example : Set motor speed to 60 rpm. From PC to Driver SPD600 Example : Read motor speed From PC to Driver SPD
From Driver to PC SPD=00600
From Driver to PC SPD=00600
Setting Motor Phase Current
:
CURddddd
ddddd : Motor phase current in ratiometric scale 0 to 1000. 0 means no current, 1000 means maximum current. 1000 corresponds to 6.8A peak current. Example : Set phase current to scale 500 (approx. 3.4A sinusoidal peak). From PC to Driver From Driver to PC CUR500 CUR=00500 Example : Read phase current From PC to Driver CUR
From Driver to PC CUR=00500
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Setting Motor Brake Current ddd 100. : OFFddd
: Motor brake current is percentage of the motor run current when at standstill. Range is 0 to
Example : Set brake current to half of the run current, which is 50% From PC to Driver From Driver to PC OFF50 OFF=00050 Example : Read brake current From PC to Driver OFF
From Driver to PC OFF=00050
Setting Micro Step Operation dd
:
MCSdd
: Microstep selection. Range:1,2,4,5,8,10,16,25. 1 means full step, 2 means half step, ...
Example : Set mikrostep value 10. From PC to Driver MCS10 Example : Read microstep value From PC to Driver MCS
From Driver to PC MCS=00010
From Driver to PC MCS=00010
Setting Initial Speed in [rpm]
:
INVddddd
ddddd : Initial speed value in (rpm x10) when motor start to run. Range:10-15000. 10 means 1.0 rmp, 15000 means 1500.0 rpm. Example : Set initial speed value 40 rpm. From PC to Driver INV400 Example : Read initial speed value From PC to Driver INV
From Driver to PC INV=00400
From Driver to PC INV=00400
Setting Acceleration Parameter :
ACCddddd
ddddd : Acceleration value. Defined as step count to reach set speed. Range:1-9999. Smaller values causes to fast behavior. Example : Set acceleration value 500. From PC to Driver ACC500 Example : Read acceleration value From PC to Driver ACC
From Driver to PC ACC=00500
From Driver to PC ACC=00500
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
Setting Displacement in Step Count : TGPdddddddddd
dddddddddd : Motor displacement value in step count. Range:1-15,000,000. Each micro step is assumed one step. In MOV command, displacement value is used as relative target position to the current position and motor runs to reach displacement value. Example : Set displacement value 3200. (1 revolution of motor shaft for microstep 16 and 1.8 degree motors). From PC to Driver From Driver to PC TGP3200 TGP=0000003200 Example : Read acceleration value From PC to Driver TGP
From Driver to PC TGP=0000003200
Setting Rotation Direction : d
DIRd
: Motor rotation direction. Range:0-1. 1 means rotation left, 0 means rotation right.
Example : Set direction left. From PC to Driver DIR1 Example : Read direction value From PC to Driver DIR
From Driver to PC DIR=00001
From Driver to PC DIR=00001
Start Motor Rotation :
RUN
No parameter required. Motor starts from initial speed (INV) with acceleration (ACC) and reach set speed (SPD). Then keeps rotations at set speed continuously. Example : Run motor. From PC to Driver RUN
From Driver to PC RUN!
Move Motor to Defined Position :
MOV
No parameter required. Motor starts from initial speed (INV) with acceleration (ACC) and reach set speed (SPD). Then Motor slows down with acceleration and stops when target position(TGP) is reached. The phase currents continue to flow, so motor shaft is blocked. Example : Run motor. From PC to Driver From Driver to PC MOV MOV!
Stop Motor Rotation
:
STP
No parameter required. Motor stops unconditionally. Phase currents are also switched off. Example : Stop motor. From Driver to PC From PC to Driver STP STP!
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL 4.3 User Programming (SW1-4 : OFF)
STEMO Programming language is developed for the STEMO stepper motor driver to help the users who develope their own scripts required by their applications. The language has ability of defining the commands that affects the motor currents, motor speeds, direction, time delays, positions, relations with the inputs and outputs. These commands are collected together to form a program list (script file). STEMO-PS, an interface software is used to manage editing, save, opening saved files, compiling, error checking and debugging, dowloading to driver. STEMO-PS also serves as direct controlling of driver without programming, such as run/stop motor, changing direction, parameters, etc.
When the developed program is downloaded to driver, it is resident in the driver and self operated. No need any connection to PC. User program has capability of · Checking the status of 6 inputs, · Conditional operations with the inputs, · Activating/deactivating 2 outputs, · Changing direction of rotation, · Time delays, · Positioning, · Relation with 2 analog inputs, · Adjustments of motor current, speed, acceleration, microstep, and many parameters, · Conditional branch, jump, · Various programming features. See the document "STEMO-PS, Stemo Programming Manual" for more details about the programming.
Multi I/O connections for the Internal Operation mode is described the sections 4.3.1 4.3.4.
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.3.1
I/O Connection : Internal Control / 24V / PNP
I/O Internal Control, 24V, PNP Giri
Pin Nr. 1 2 3 4 5 6 10 12 13 14 19 25 24 26 Color Green Blue Green-Brown Green-White Yellow-White Gray-Pink Gray Red-Blue Yellow- Brown Brown Red Purple Yellow Black Function Input-1 Input -2 Input -3 Input -4 Input -5 Input -6 Common Input :24V Output-1 Output -2 +5V, Potentiometer supply +24V Analog Input -1 (Pot-1) Analog Input -2 (Pot-2) GND
24V, Active High, PNP
External circuit (Use when internal 24V is used) 19 Red Gray
10
Stemo Driver
Green
1
Input-1
Blue
2
Input-2
Green-Brown
3
Input-3
Green-White
4
Input-4
Yellow-White
5
Input-5
24V
+
Gray-Pink
6
Input-6 Output-1 Output-2
load
Red-Blue Yellow-Brown
12 13
Do not use when internal supply used
Potentiometer
Brown Purple
14 25
+
Pot-1 24V
-
+
Yellow Black
24 26
Pot-2 GND
5V
-
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.3.2 I/O Connection : Internal Control / 24V / NPN
I/O Internal Control, 24V, NPN Giri
Pin Nr. 1 2 3 4 5 6 10 12 13 14 19 25 24 26 Color Green Blue Green-Brown Green-Brown Yellow-White Gray-Pink Gray Red-Blue Yellow-Brown Brown Red Purple Yellow Black Function Input-1 Input-2 Input-3 Input-4 Input-5 Input-6 Common Input :24V Output-1 Output -2 +5V, Potentiometre supply +24V Analog Input-1 (Pot-1) Analog Input-2 (Pot-2) GND
24V, Active Low, NPN
External Circuit (Use when internal 24V is used) Red
19 10
Stemo Driver
24V
+
Gray
Green
1
Input-1
Do not use when internal supply is used
Blue
2
Input-2
Green-Brown
3
Input-3
Green-White
4
Input-4
Yellow- White
5
Input-5
Gray-Pink
6
Input-6 Output-1 Output-2
Red-Blue load Yellow-Brown
12 13
Potantiometer
Brown Puple
14 25
+
Pot-1 5V 24V
-
+
Yellow Black
24 26
Pot-2 GND
-
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.3.3 I/O Connection : Internal Control / 5V / PNP
I/O Internal control, 5V, PNP Giri
Pin Nr. 1 2 3 4 5 6 15 12 13 14 25 24 26 Color Green Blue Green -Brown Green -White Yellow- White Gray-Pink White Red-Blue Yellow - Brown Brown Purple Yellow Black Function Input -1 Input -2 Input -3 Input -4 Input -5 Input -6 Common Input :5V Output-1 Output-2 +5V, Potantiometer supply Analog Input-1 (Pot-1) Analog Input-2 (Pot-2) GND
5V, Active High, PNP
External circuit (Use when internal 24V is used) Brown White
14 15
Stemo Driver
Green
1
Input-1
Blue
2
Input-2
Green-Brown
3
Input-3
Green-White
4
Input-4
Yellow-White
5
Input-5
Gray-Pink 5V +
6
Input-6 output-1 output-2
load Do not use when internal supply is used
Red-Blue Yellow-Brown
12 13
Potantiometer
Brown Purple
14 25
+
Pot-1 5V 24V
-
+
Yellow Black
24 26
Pot-2 GND
-
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.3.4 I/O Connection : Internal Control / 5V / NPN
I/O Internal Control, 5V, NPN Giri
Pin Nr. 1 2 3 4 5 6 15 12 13 14 25 24 26 Color Green Blue Green -Brown Green -White Yellow- White Gray-Pink White Red-Blue Sari- Brown Brown Purple Yellow Black Function Input -1 Input -2 Input -3 Input -4 Input -5 Input -6 Common Input :5V Output-1 Output-2 +5V, Potentiometer supply Analog Input -1 (Pot-1) Analog Input -2 (Pot-2) GND
5V, Active Low, NPN
External circuit (Use when internal 24V is used) Brown
14 15
Stemo Driver
+
5V
White
Green
1
Input-1
Do not use when internal supply is used
Blue
2
Input-2
Green- Brown
3
Input-3
Green-Beyaz
4
Input-4
Yellow-White
5
Input-5
Gray-Pink
6
Input-6 Output-1 Output-2
Red-Blue Yük Yellow- Brown
12 13
Potansiyometre
Brown Purple
14 25
+
Pot-1 5V 24V
-
+
Yellow Black
24 26
Pot-2 GND
-
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
4.3.5 Rotary Encoder Connection *
Rotary Encoder (line driver) Red-White Black-White Gray-White Blue-White Pink-White GND Black
7 9 18 8 17 26
Stemo Driver
Vdd
12V
(*): Rotary Encoder feature is optional, may not exist some models.
4.3.6
RS232 Programming Cable
9-Dsub, Female
RJ-11, 4-circuit, narrow
5 2 3
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STEMO-3 STEPPER MOTOR DRIVER / CONTROLER HARDWARE MANUAL
5
Precautions for stepper motors
· · · · Load characteristics should be inspected before selection the stepper motors. Inspect the motor's torque-speed diagrams in the motor datasheet to fit the application requirements. Set the driver current so that the motor maximum current should not be overflowed. Otherwise motor may be damaged by over temperature. The motors have better dynamic charecteristic in high speeds when the supply voltage is high. But, the dissipation is increased very much with high voltage supply. Use low voltage supply for low speed applications. (0 - 200 rpm are relatively low speeds) Select the motor which holding torque is two times of the load torque for better operations .
·
End of Document
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