Oriental motor CMD2120P

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Introduction



Before use

Only qualied personnel of electrical and mechanical engineering should

work with the product.

Use the product correctly after thoroughly reading the "Safety precautions."

In addition, be sure to observe the contents described in warning, caution,

and note in this manual.

The product described in this manual has been designed and manufactured

to be incorporated in general industrial equipment. Do not use for any other

purpose. Oriental Motor Co., Ltd. is not responsible for any damage caused

through failure to observe this warning.

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Overview of the product

The products described in this manual are open frame type microstepping

drivers to drive unipolar-connection stepping motors.

Safety precautions

The precautions described below are intended to prevent danger or injury

to the user and other personnel through safe, correct use of the product.

Use the product only after carefully reading and fully understanding these

instructions.

Description of signs

Handling the product without observing the instructions

that accompany a "WARNING" symbol may result in

serious injury or death.

Handling the product without observing the instructions

that accompany a “CAUTION” symbol may result in injury

or property damage.

The items under this heading contain important handling

instructions that the user should observe to ensure the

safe use of the product.

Description of graphic symbols

Indicates "prohibited" actions that must not be performed.

Indicates "compulsory" actions that must be performed.

Do not use the product in explosive or corrosive environments, in the

presence of ammable gases, locations subjected to splashing water,

or near combustibles.

Doing so may result in re or injury.

Do not forcibly bend, pull or pinch the cable.

Doing so may result in re.

Do not turn the AWO input to ON while the motor is operating.

Doing so may result in injury or damage to equipment.

Do not disassemble or modify the product.

Doing so may result in injury.

HM-7450-3

OPERATING MANUAL

Thank you for purchasing an Oriental Motor product.

This Operating Manual describes product handling procedures and safety

precautions.

Please read it thoroughly to ensure safe operation.

Always keep the manual where it is readily available.

For 2-phase Stepping Motor

CMD

Driver

KCC-REM-OMC-001

Assign qualied personnel to the task of installing, wiring, operating/

controlling, inspecting and troubleshooting the product.

Failure to do so my result in re or injury.

If this product is used in a vertical application, be sure to provide a

measure for the position retention of moving parts.

Failure to do so may result in injury or damage to equipment.

Install the product inside an enclosure.

Failure to do so may result in injury.

Always keep the power supply voltage of the driver within the

specied range.

Failure to do so may result in re.

For the driver power supply use a DC power supply with reinforced

insulation on its primary and secondary sides.

Failure to do so may result in electric shock.

Connect the cables securely according to the wiring diagram.

Failure to do so may result in re.

Turn o the driver power supply in the event of a power failure.

Failure to do so may result in injury or damage to equipment.

Do not use the product beyond its specications.

Doing so may result in injury or damage to equipment.

Keep your ngers and objects out of the openings in the product.

Failure to do so may result in re or injury.

Do not touch the product during operation or immediately after

stopping.

Doing so may result in a skin burn(s).

Do not forcibly bend or pull the cable that was connected to the

driver.

Doing so may result in damage to product.

Keep the area around the product free of combustible materials.

Failure to do so may result in re or a skin burn(s).

Leave nothing around the product that would obstruct ventilation.

Failure to do so may result in damage to equipment.

Do not touch the rotating part (output shaft) while operating the

motor.

Doing so may result in injury.

Use a motor and driver only in the specied combination.

Failure to do so may result in re.

Provide an emergency stop device or emergency stop circuit so that

the entire equipment will operate safely in the event of a system

failure or malfunction.

Failure to do so may result in injury.

Before supplying power to the driver, turn all input signals to the

driver to OFF.

Failure to do so may result in injury or damage to equipment.

Before rotating the output shaft manually while the motor stops,

conrm that the AWO input turns ON.

Failure to do so may result in injury.

When an abnormal condition has occurred, immediately stop

operation and turn o the driver power.

Failure to do so may result in re or injury.

Dispose the product correctly in accordance with laws and

regulations, or instructions of local governments.

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Summary

Connection

Input Signals at 5 VDC

Wiring instructions for input signals when using a 5 VDC signal voltage.

Input Signals at 24 VDC

Wiring instructions for input signals when using a 24 VDC signal voltage.

Connecting the Motor

Details motor lead wire colors and pin assignments for proper motor connection.

Connector Pin Assignments

Connecting the Power Supply

Provides guidance on selecting and connecting a suitable power supply for the driver.

Noise Measures

Measures Against Electrical Noise

Outlines methods to suppress electrical noise for reliable operation.

Suppression of Effect by Noise Propagation

Techniques to prevent noise propagation, including ferrite cores and cable routing.

Precautions About Static Electricity

Warns about static electricity damaging the driver and provides handling precautions.

PLS (CW) Input, DIR (CCW) Input

Troubleshooting and Remedial Actions

Motor Not Excited

Addresses issues where the motor is not energized, checking connections and current settings.

Motor Does Not Run

Troubleshooting for when the motor fails to move, checking AWO input and pulse connections.

Motor Rotates Opposite Direction

Solutions for reversed motor rotation, checking CW/CCW input connections.

Motor Operation Unstable

Diagnoses unstable motor operation due to incorrect settings or alignment.

Loss of Synchronization

Addresses loss of synchronization during operation, checking pulse speed and electrical noise.

Motor Does Not Move Set Amount

Troubleshooting for incorrect positioning, checking pulse counts and step angle settings.

Current Does Not Drop When Motor Stops

Solutions for the current not dropping at standstill, checking the ACDOFF input.

Motor Vibration Too Loud

Addresses excessive motor vibration by checking resonance or load conditions.

Motor Too Hot

Troubleshooting for overheating, checking operation time and standstill current.

TIM Output Does Not Work

Solutions for TIM output malfunction, checking CS input and timing.

Summary

Connection

Input Signals at 5 VDC

Wiring instructions for input signals when using a 5 VDC signal voltage.

Input Signals at 24 VDC

Wiring instructions for input signals when using a 24 VDC signal voltage.

Connecting the Motor

Details motor lead wire colors and pin assignments for proper motor connection.

Connector Pin Assignments

Connecting the Power Supply

Provides guidance on selecting and connecting a suitable power supply for the driver.

Noise Measures

Measures Against Electrical Noise

Outlines methods to suppress electrical noise for reliable operation.

Suppression of Effect by Noise Propagation

Techniques to prevent noise propagation, including ferrite cores and cable routing.

Precautions About Static Electricity

Warns about static electricity damaging the driver and provides handling precautions.

PLS (CW) Input, DIR (CCW) Input

Troubleshooting and Remedial Actions

Motor Not Excited

Addresses issues where the motor is not energized, checking connections and current settings.

Motor Does Not Run

Troubleshooting for when the motor fails to move, checking AWO input and pulse connections.

Motor Rotates Opposite Direction

Solutions for reversed motor rotation, checking CW/CCW input connections.

Motor Operation Unstable

Diagnoses unstable motor operation due to incorrect settings or alignment.

Loss of Synchronization

Addresses loss of synchronization during operation, checking pulse speed and electrical noise.

Motor Does Not Move Set Amount

Troubleshooting for incorrect positioning, checking pulse counts and step angle settings.

Current Does Not Drop When Motor Stops

Solutions for the current not dropping at standstill, checking the ACDOFF input.

Motor Vibration Too Loud

Addresses excessive motor vibration by checking resonance or load conditions.

Motor Too Hot

Troubleshooting for overheating, checking operation time and standstill current.

TIM Output Does Not Work

Solutions for TIM output malfunction, checking CS input and timing.

Overview

Oriental Motor CMD Driver Operating Manual

Oriental Motor CMD Driver Operating Manual

This document provides a comprehensive overview of the Oriental Motor CMD Driver, an open-frame microstepping driver designed for unipolar-connection stepping motors. It covers essential aspects from installation and connection to operation, troubleshooting, and maintenance.

General Description

The CMD Driver is a compact, open-frame microstepping driver for 2-phase stepping motors. It is designed for integration into general industrial equipment and offers precise control over stepping motors through various input signals and adjustable settings. The driver operates on a 24 VDC power supply and is capable of driving a range of Oriental Motor stepping motors, with specific combinations detailed in the manual.

Important Technical Specifications

Power Supply:

Input Voltage: 24 VDC ±10%
Power Supply Current Capacity:
- CMD2109P: 1.5 A or more
- CMD2112P: 1.7 A or more
- CMD2120P: 2.9 A or more
DC power supply with reinforced insulation on its primary and secondary sides is required.

Operating Environment:

Ambient Temperature: 0 to +40 °C (+32 to +104 °F) (non-freezing)
Humidity: 85% or less (non-condensing)
Altitude: Up to 1,000 m (3,300 ft.) above sea level
Atmosphere: No corrosive gas, dust, water, or oil.
Installation: Inside an enclosure, in a well-ventilated location, free from direct sun, excessive dust, splashing water, salt, continuous vibration, excessive shocks, electromagnetic noise, radioactive materials, magnetic fields, or vacuum.

Input Signals:

PLS (CW) and DIR (CCW) inputs: 5 VDC input specification. If V0 exceeds 5 V, an external resistor R1 must be connected.
AWO (All Windings Off), CS (Step Angle Switching), ACDOFF (Auto Current Down Release) inputs: Can be connected directly to 5 VDC or 24 VDC.
Maximum Input Pulse Frequency: 100 kHz (duty cycle 50%).

Output Signals:

TIM (Timing) output: Photocoupler/open-collector output (5 to 24 VDC, Output current 10 mA or less).
If output signal current exceeds 10 mA, an external resistor R2 must be connected to keep the current to 10 mA or below.

Motor Current Settings:

Operating Current (RUN): 16 adjustable levels (e.g., CMD2109P: 0.12 A/phase to 0.95 A/phase; CMD2120P: 0.58 A/phase to 2 A/phase).
Standstill Current (STOP): Adjustable via potentiometer, typically 40% of the operating current.

Step Angle Settings:

Adjustable via SW-2, SW-3, SW-4 switches to select from 5 step angles (e.g., 1.8°, 0.9°, 0.45°, 0.225°, 0.1125° for a base step angle of 1.8°/step).

Compliance:

CE Marking: Conforms to EMC Directive (EN 55011 group 1 class A, EN 61000-6-4; EN 61000-6-2).
RoHS Directive (2011/65/EU).
Republic of Korea, Radio Waves Act (KC Mark affixed).

Usage Features

Installation:

The driver must be installed on a metal plate with excellent vibration resistance, either vertically or horizontally. Vertical installation requires the power element to face up and the aluminum electrolytic capacitor to face down to prevent heat damage.
Mounting can be done using either "cutout for mounting A" or "cutout for mounting B," but not both concurrently.
Clearances: At least 25 mm (0.98 in.) horizontally and 50 mm (1.97 in.) vertically from the enclosure or other equipment. For side-by-side installations of multiple drivers, provide 20 mm (0.79 in.) horizontally and 50 mm (1.97 in.) vertically.
Torque for mounting screws: 0.5 N-m (71 oz-in).

Connection:

Motor connection: Specific pin assignments vary by motor model. It is crucial to connect motor lead wires correctly and securely to CN3 to prevent damage.
Power supply connection: Connect to CN1, observing polarity.
I/O signal connection: Connect to CN2. Cables should be as short as possible to minimize noise effects.
Noise measures: Employ noise filters, CR circuits for surge suppression, shielded twisted pair cables, and proper grounding techniques. Keep power lines separate from signal lines.

Operation Modes:

Pulse Input Mode: Selectable between 1-pulse input mode (PLS for pulse, DIR for direction) and 2-pulse input mode (CW for clockwise pulse, CCW for counter-clockwise pulse) via SW-1.
Motor Operating Current Setting (RUN): Adjustable via a dial switch to match motor requirements and reduce vibration/temperature.
Motor Standstill Current Setting (STOP): Adjustable via a potentiometer to reduce heat generation when the motor is stopped. The standstill current is a percentage of the operating current.
Step Angle Switching (CS input): Allows dynamic switching between basic and set step angles. Changing CS input during operation may cause loss of synchronism.
All Windings Off (AWO input): When ON, cuts off motor current, allowing manual rotation of the output shaft.
Auto Current Down Release (ACDOFF input): When OFF, automatically reduces motor current to standstill current after pulse output stops, suppressing heat generation.

Timing Output (TIM):

Outputs a signal every time the motor output shaft rotates by a specific angle (e.g., 7.2° for standard type motors). Useful for detecting home positions in conjunction with other sensors.

Maintenance Features

Periodic Inspection:

Regularly check for loose mounting screws or connection parts.
Inspect for dust accumulation on the driver.
Monitor for strange smells or appearances within the driver, which could indicate abnormal conditions.

Troubleshooting:

The manual provides a detailed troubleshooting guide for common issues such as unstable motor operation, loss of synchronization, motor not moving, current not dropping, excessive motor vibration, motor overheating, and TIM output malfunction.
Remedial actions include checking connections, adjusting settings (current, step angle, acceleration/deceleration time), implementing noise countermeasures, and ensuring proper load conditions.

Safety Precautions:

Only qualified personnel should install, wire, operate, inspect, and troubleshoot the product.
Always turn off the driver power before connecting/unplugging connectors or when an abnormal condition occurs.
Avoid touching the product during or immediately after operation to prevent burns.
Do not disassemble or modify the product.
Ensure the power supply voltage is within the specified range.
Provide an emergency stop device for the entire equipment.
Handle the driver with care, especially regarding static electricity, as it uses sensitive semiconductor elements.

Accessories:

Connection cable set (LCS01CMK2): Includes cables for power supply, I/O signals, and motor connection.
Connection cable (for signal) (CC12Dxxx-2 series): Shielded twisted pair cables for I/O signals, available in various lengths.
Pulse signal converter for noise immunity (VCS06): Eliminates pulse signal noise and converts to line driver type.
CR circuit for surge suppression (EPCR1201-2, VCS02): Protects relay or switch contacts from surges.