Oriental motor CSD2120-T Instruction manual

<1>
Last updated January 2002
ORIENTAL MOTOR U.S.A. CORP.
A Full Range of Driver Functions
Input/Output Signal (TB1)
Indication
24/36V
GND
TIMING
TIMING
C.OFF
C.OFF
DIR./CCW
DIR./CCW
PLS/CW
Input
Output
Input
Input
Input
24 VDC10% or 36 VDC10%
Timing Signal
All Windings OFF Signal
Rotation Direction Signal
(CCW Pulse Signal)
Pulse Signal
(CW Pulse Signal)
PLS/CW
Input/Output Signal Name
4
Function Select Switches
Indicator Switch Name Functions
1P/2P
F/H
Pulse input mode switch
Step angle select switch
Switches between 1-pulse input and 2-pulse input.
Switches the motor's step angle.
F (Full Step): 1.8˚/step, H (Half Step): 0.9˚/step
(F: 0.9˚/step, H: 0.45˚/step for High-Resolution Type)
Output current automatically drops to 2540%
approximately 0.1 second after the pulse input rises.
Changes power supply voltage.
For 24 VDC and 36 VDC
ACD
24/36V
Automatic current cutback
function select switch
Power supply voltage
select switch
3
Current Adjustment Potentiometer
Indicator Name of Potentiometer Functions
RUN
VR
STOP
VR
Motor run current
potentiometer
Can adjust the motor
running current.
Motor stop current
potentiometer
Can adjust the current
at the motor standstill.
2
Signal Monitor Display
1
Indicator Color Functions
POWER Green Power input display
DIR
/CCW
C.OFF
TIMING
POWER
BLUE
RED
GREEN
BLACK
WHITE
YELLOW
PULSE
/CW
TB1
1234
OFF
VEXTA
C.C.+
C.C.-
ACD
F/H
1P/2P
24/36V
RUN
VR
STOP
VR
P0W
TB2
Motor terminal
blocks
43
12
To see specifications and pricing, use the Web Catalog search function.
Driver Model: CSD2120-T
Web Catalog–Connection and Operation

<2>
Last updated January 2002
ORIENTAL MOTOR U.S.A. CORP.
Connection Diagrams
Standard Type: CSK26
High-resolution Type: CSK26
SG Geared Type: CSK264
Power Supply
Keep the input power voltage 24 VDC10% or 36 VDC10%. Use a power
supply that can supply sufficient input current.
Notes
• Keep the voltage Vo between 5 VDC and 24 VDC. When they are equal to 5
VDC, the external resistance R1is not necessary. When they are above 5 VDC,
connect R1to keep the current between 10 mA and 20 mA, and connect R2to
keep the current below 10 mA.
• Use twisted-pair wire of AWG 24 (0.2 mm2) or thicker and 6.6 feet (2 m) or
less in length for the signal line.
• Suitable wire size for the TB1, TB2 and TB3 connector is between AWG 20
and 26. Use AWG 20 (0.5 mm2) or thicker for motor lines ( when extended)
and power supply line.
• Signal lines should be kept at least 3.94 inch (10 cm) away from power lines
(power supply lines and motor lines). Do not bind the signal line and power
line together.
• Use spot grounding to ground of the driver and external controller.
• If noise generated by the motor lead wire causes a problem, try shielding the
motor lead wires with conductive tape or wire mesh.
• Incorrect connection of DC power input will lead to driver damage. Make sure
that the polarity is correct before turning power on.
2-phase stepping motor
Twisted-pair wire
Controller
Driver
TB2
GND
V01
Pulse Input
Rotation Direction Input
All Windings Off Input
Excitation Timing Output
24 VDC/36 VDC
GND
Yellow
White
Black
Green
Red
Blue


TB1
V02








R1
R2
R1
R1
To see specifications and pricing, use the Web Catalog search function.
Driver Model: CSD2120-T
Web Catalog–Connection and Operation
Description of Input/Output Signals
Pulse (CW) Input and Rotation Direction (CCW) Input
Signal
1-Pulse Input Mode
Pulse Input Signal
"Pulse" signal is input to the PULSE/CWterminal. When the
photocoupler state changes from "ON" to "OFF", the motor
rotates one step. The direction of rotation is determined by
the rotation direction signal.
Rotation Direction Input Signal
The "Rotation Direction" signal is input to the
DIR./CCWterminal. A "photocoupler ON" signal input
commands a clockwise direction rotation. A "photocoupler
OFF" signal input commands a counterclockwise direction
rotation.
2-Pulse Input Mode
CW Pulse Input Signal
"Pulse" signal is input to the PULSE/CWterminal. When the
photocoupler state changes from "ON" to "OFF", the motor
rotates one step in a clockwise direction.
CCW Pulse Input Signal
"Pulse" signal is input to the DIR./CCWterminal. When the
photocoupler state changes from "ON" to "OFF", the motor
rotates one step in a counterclockwise direction.
All Windings Off Input Signal
When the "All Windings Off" (A.W. OFF) signal is in the
"photocoupler ON" state, the current to the motor is cut off
and motor torque is reduced to zero. The motor output shaft
can then be rotated freely by hand.This signal is used when
moving the motor by external force or to the manual home
position.
Excitation Timing Output Signal
The signal is output once each time the excitation
sequence returns to step “0” in synchronization with input
pulse. The excitation sequence is designed to complete
one cycle as the motor shaft rotates 7.2˚.
A signal is output every 4 pulses in full step mode and
every 8 pulses in half step mode. (When the “excitation
timing” signal is output, the transistor turns ON.)

<3>
Last updated January 2002
ORIENTAL MOTOR U.S.A. CORP.
Timing Chart
Standard Type: CSK26
High-resolution Type: CSK26
SG Geared Type: CSK264
Note: 10 µs or more is the standard interval time for switching from CW to CCW. Note that the interval time greatly varies according the motor and load inertia.
1Wait a period of time to allow the motor oscillations to end before inputting the "All Windings Off" signal. This time varies with the load inertia, the load torque
and the starting pulse rate. The signal input must be stopped before the motor stops.
2Never input a step pulse signal immediately after switching the "All Windings Off" input signal to the "photocoupler OFF" state or the motor may lose synchronism.
In general, a minimum interval of 100 ms is required.
3The motor will not operate properly if a pulse signal is input when either the CW or CCW pulse is in the "photocoupler ON" state.
The shaded area indicates when the photocoupler is ON.
Current Cutback
All Windings Off
 2
100  s min.
Approx. 100 ms
CW
Motor
CCW
2-pulse input mode
1-pulse input mode
CW Pulse Signal
CCW Pulse Signal
Pulse Signal
Rotation Direction
Signal
All Windings Off Signal
Approx. 100 ms
 2
 3
 1
Photocoupler
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
5  s min.
5  s min.
To see specifications and pricing, use the Web Catalog search function.
Driver Model: CSD2120-T
Web Catalog–Connection and Operation

<4>
Last updated January 2002
ORIENTAL MOTOR U.S.A. CORP.
Adjusting the Output Current
(Standard Type: CSK26,
High-resolution Type: CSK26,
SG Geared Type: CSK264)
Adjustment Method
The rated output current is set at the factory. When it is
necessary to change the current setting, follow the
procedures described below.
Connecting Voltmeter
Insert voltmeter test probes [approximately 0.18 inch (2.1
mm)] as shown below.The current value for one phase is
equivalent to the voltage shown by the voltmeter.
(ex : voltmeter voltage 1 V = 1 A/Phase)
Adjusting the Motor Running Current
To set the "Automatic Current Cutback" function to inactive
(SW1: OFF):
(1) Adjust the motor operating current with the RUN
potentiometer. It can be adjusted from 0.3 A/phase to the
rated value of the driver.
(2) The motor operating current is set for the rated current at
the time of shipping. The RUN potentiometer can be used
lower the operating current to reduce temperature rise in the
motor/driver, adjust torque margin and reduce vibration.
Note:
The motor RUN current should be less than the motor rated current.
To see specifications and pricing, use the Web Catalog search function.
Driver Model: CSD2120-T
Web Catalog–Connection and Operation
Adjusting the Current at Motor Standstill
To set the "Automatic Current Cutback" function to active (SW1:
ON):
(1) Adjust the current at motor standstill with the STOP
potentiometer. It can be adjusted from 25% to 40% of the
run operating current (0.3 A minimum).
(2) At the time of shipping, the current at motor standstill is set
for 40%. The STOP potentiometer readjusts the current to
the value required to produce enough holding torque.
Holding torque
[oz-in (N·m)]

Motor rated current [A]
=
Maximum
holding torque
[oz-in (N·m)]
Current at motor
standstill [A]
Black ()
RED ()
C.C.C.C.RUN VR STOP VR