Q&A Reducer

We have posted frequently asked questions from customers in Q&A format. Please click on the question to proceed to the answer.

DCBL Hypoid Motor and DCBL drivers

Words in Q&Aof

●Technical edition

Q1 When communicating with the driver, can I just use the LAN cable that connects my PC to the Internet?
Q2 How to set the parameters?
Q3 What is the product's lifespan?
Q4 Can it be used with a single-phase 100V AC power supply?
Q5 When can I use the Simple Hold function?
Q6 What is the maximum temperature during normal use?
Q7 Can I use third-party drivers?
Q8 What is the degree of backlash?
Q9 If the power supply to the driver is cut off, will the motor retain its stopped position?
Q10 If a brake is included, can the brake be released without using a driver? Also, if the driver fails, can the brake be released by directly exciting it?
Q11 There are two stopping methods available: simple hold and short brake, but how should they be used?
Q12 Is the control between the PLC and the driver done via IO or serial communication (RS-485)?
Q13 How does the holding torque of the simple holding function compare to the rated torque?
Q14 I can't connect the driver to my PC. What should I check?
Q15 What is the speed fluctuation rate?

●Options

Q16 If I want to extend the cable connecting the motor and driver, what is the maximum length?
Q17 What problems are expected to occur if the cable is made longer?
Q18 What kind of problems are expected to occur if noise occurs in the communication between the motor and driver?
Q19 If noise occurs in the I/O signal cable between the driver and control device, what kind of problems are expected to occur?
Q20 Which connector should I use for communication?
Q21 When is a regenerative resistor necessary?
Q22 How do I splice together the motor extension cables?
Q23 Is it possible to disconnect and connect the communication cable CN3 end beyond 50 mm?
Q24 Is the motor extension cable Flexible cable?

●Selection edition

Q25 Can I connect using a micro USB connector and communicate while driving?
Q26 Is the motor powered by DC?
Q27 How is it different from an induction motor?
Q28 What is the difference between a servo motor and a servo motor?
Q29 What are the requirements for selecting DCBL Hypoid Motor?
Q30 What exactly does the "short time" mentioned in the motor characteristics diagram in the catalog refer to?
Q31 Is it possible to change the cable position?
Q32 Is it possible to handle reduction ratios of 1/80 or more?
Q33 Is it possible to manufacture a parallel shaft type?
Q34 How frequently can the brake be turned on/off?
Q35 Can the simple holding function be used in the same way as the servo lock?
Q36 Is the stopping accuracy improved compared to an induction motor + inverter configuration?
Q37 What voltage does the driver output support?

Surrounding environment

Q38 If there is no brake, will the position shift due to its own weight when stopped?
Q39 What is the maximum operating temperature?
Q40 Can it be used outdoors?
Q41 Is it possible to change to a shaft made of a different material (stainless steel, etc.)?
Q42 What kind of problems are expected to occur if used in a high temperature environment?
To the answer
Q1 When communicating with the driver, can I just use the LAN cable that connects my PC to the Internet?
A1

It cannot be used as is. Because the communication standards are different, you will need to modify the cable for RS-485.
For pin layout, please refer to Instruction Manuals [3-2. Terminal Table ● Communication Connector (RS485)].

Back to Questions
Q2 How to set the parameters?
A2

You can set up the driver by connecting it to a PC or PLC. Dedicated software is also available for PCs.
For parameter data addresses, please refer to the list in the catalog and Instruction Manuals.

Back to Questions
Q3 What is the product's lifespan?
A3

The product lifespan differs depending on the environment and conditions in which it is used. The estimated lifespan is 20,000 hours when used in the recommended atmosphere.

Back to Questions
Q4 Can it be used with a single-phase 100V AC power supply?
A4

No. However, if you are only changing parameter settings, it is possible to supply a single-phase 100V power supply.

Back to Questions
Q5 When can I use the Simple Hold function?
A5

As this is an electrical holding brake, it is suitable for temporarily stopping work on a transport conveyor or other assembly line.
If continuous holding function is required, please use a product with a brake.

Back to Questions
Q6 What is the maximum temperature during normal use?
A6

Although it depends on the conditions of use, the internal temperature of both the motor and driver is limited to a maximum of 100°C.
In addition, the communication function makes it possible to monitor the internal temperature of the motor driver.

Back to Questions
Q7 Can I use third-party drivers?
A7

Be sure to use the dedicated driver as it may cause a malfunction.

Back to Questions
Q8 What is the degree of backlash?
A8

The backlash of the output shaft is 60 minutes at a reduction ratio of 1/10, and 30 minutes at other ratios.

Back to Questions
Q9 If the power supply to the driver is cut off, will the motor retain its stopped position?
A9

This product does not recognize its position using an absolute encoder, so if the power is turned off, the stopped position when restarted will become the home position.
The position information before the power was turned off will be lost, so please reset the origin position if necessary.

Back to Questions
Q10 If a brake is included, can the brake be released without using a driver? Also, if the driver fails, can the brake be released by directly exciting it?
A10

The brake can be released by directly connecting it to a 24V power supply.
If you want to control the brakes with an external control device such as a PLC, you can do so by replacing the driver output in the recommended wiring with the output from the PLC, etc.
You can control things like changing the brake timing.

Back to Questions
Q11 There are two stopping methods available: simple hold and short brake, but how should they be used?
A11

By using them according to the load, you can prevent misalignment when the actuator is stopped.
For example, if a lifting device causes swerving when a short brake is applied, a control that uses simple hold to stop the device completely and then brakes will prevent the device from moving off the stopping position.

Back to Questions
Q12 Is the control between the PLC and the driver done via IO or serial communication (RS-485)?
A12

Both communication methods are supported.

Back to Questions
Q13 How does the holding torque of the simple holding function compare to the rated torque?
A13

It is about 67% of the rated torque. Also, since it is only a simple holding function, the holding time is short (about a few seconds).
We do not recommend using this as a substitute for a mechanical brake.

Back to Questions
Q14 I can't connect the driver to my PC. What should I check?
A14

Please check the items below.
1. Does the wiring match what is described in Instruction Manuals?
2. Is the USB driver installed?
3. COM port settings
4. Setting the baud rate and slave address of DIP switch 1
*For details, please refer to Instruction Manuals [3-2. DIP switch 1]

Back to Questions
Q15 What is the speed fluctuation rate?
A15

Approximately 0.5%, which represents the percentage change of the average motor speed when external conditions (load, temperature, etc.) change.
Similarly, flutter characteristics indicate changes in rotation speed, which indicates unevenness in the rotation of a motor's speed.
Flutter characteristics change depending on the load conditions.

Back to Questions
Q16 If I want to extend the cable connecting the motor and driver, what is the maximum length?
A16

The maximum length is 10m. If you need to extend the length, please use DCBL Hypoid Motor extension cable (sold separately).

Back to Questions
Q17 What problems are expected to occur if the cable is made longer?
A17

If the distance exceeds 10m, it may not function properly due to noise.
*In environments with significant noise, operation may be unstable even at distances of less than 10m.
In that case, please consider reducing noise by reviewing the wiring and grounding, or by using a noise filter in addition.

Back to Questions
Q18 What kind of problems are expected to occur if noise occurs in the communication between the motor and driver?
A18

There is a possibility that the motor's position detection signal will be misrecognized, resulting in the motor moving to the wrong position (passing the stop position, stopping before the stop position, etc.).
Also, the motor's rotation state may be misrecognized, resulting in unstable rotation (such as jerky rotation).

Back to Questions
Q19 If noise occurs in the I/O signal cable between the driver and control device, what kind of problems are expected to occur?
A19

There is a risk of the signal being misrecognized, resulting in unstable operation (the motor starting/stopping at unintended times, the output signal turning ON/OFF at unintended times, etc.).

Back to Questions
Q20 Which connector should I use for communication?
A20

If you want to communicate while the motor is running, please use the RS-485 communication connector.
Please use the USB connector for communication when writing parameters or checking the motor operating status while the motor is stopped.

Back to Questions
Q21 When is a regenerative resistor necessary?
A21

When used for lifting or when the inertia ratio is large, the motor may be rotated from the load side to generate power, which may trigger the driver's overvoltage protection.
A regenerative resistor is used to prevent these problems.

Back to Questions
Q22 How do I splice together the motor extension cables?
A22

The cable has male and female connectors on both ends, so you can simply connect the cables together using the connectors on the cable.

Back to Questions
Q23 Is it possible to disconnect and connect the communication cable CN3 end beyond 50 mm?
A23

The lead wires are individual wires, so they can be connected by processing end.

Back to Questions
Q24 Is the motor extension cable Flexible cable?
A24

It is not Flexible cable.

Back to Questions
Q25 Can I connect using a micro USB connector and communicate while driving?
A25

The microUSB connector is mainly a port for writing parameters, etc.
As stated in Q18, this is not recommended as there is a possibility that communication may be interrupted due to noise.
If you want to operate the device while communicating, please use the RS-485 communication connector.

Back to Questions
Q26 Is the motor powered by DC?
A26

Although it is called DCBL Hypoid Motor, it is a motor that is powered by an AC power source.
*It is called DCBL Hypoid Motor because of its operating principle.

Back to Questions
Q27 How is it different from an induction motor?
A27

Generally, when controlling a three-phase motor, open loop control is used with an inverter.
In this case, there are disadvantages such as the inability to track the actual speed in response to load fluctuations, and the motor characteristics making it unsuitable for multi-speed operation.
DCBL Hypoid Motor use a Hall IC to feedback the motor's rotation status to the driver for closed-loop control.
Stable speed control and positioning control are possible.
In addition, the motor itself is highly efficient, resulting in greater energy savings.

Back to Questions
Q28 What is the difference between a servo motor and a servo motor?
A28

Servo motors, which offer higher performance and more functions, are therefore more expensive.
Although they both use closed loop control, servo motors are capable of more accurate positioning, torque control, and high speed control.
To achieve this, high precision components such as encoders are used, which makes the device expensive.

Back to Questions
Q29 What are the requirements for selecting DCBL Hypoid Motor?
A29

Please make use of the technical sheets available at the end of the catalogue and on our website.

Back to Questions
Q30 What exactly does the "short time" mentioned in the motor characteristics diagram in the catalog refer to?
A30

It will last for a few seconds when accelerating or decelerating. Please do not operate the motor for long periods of time above the rated speed as this may cause abnormal heat generation. Return to Questions
Q31 Is it possible to change the cable position?
A31

Available in 90° pitch. Please see the catalog for details.

Back to Questions
Q32 Is it possible to handle reduction ratios of 1/80 or more?
A32

This is available as a special-order product.

Back to Questions
Q33 Is it possible to manufacture a parallel shaft type?
A33

This is available as a special-order product.

Back to Questions
Q34 How frequently can the brake be turned on/off?
A34

Mechanical braking is up to 10 times per minute.

Back to Questions
Q35 Can the simple holding function be used in the same way as the servo lock?
A35

Compared to servo motors, the pulse resolution is lower, so the sudden start/deceleration performance is reduced.
As a result, although the frequency is lower than that of a servo motor, it can still operate at 30 times per minute.

Back to Questions
Q36 Is the stopping accuracy improved compared to an induction motor + inverter configuration?
A36

Since it is controlled using the Hall sensor signal, it can stop more accurately than an induction motor + inverter without feedback control.
This does not apply to configurations using external encoders or special motors.

Back to Questions
Q37 What voltage does the driver output support?
A37

The output signal can support up to DC30V.
For example, if 24V is connected to the power supply for the external signal, the output signal will be DC24V.

Back to Questions
Q38 If there is no brake, will the position shift due to its own weight when stopped?
A38

A simple holding function is provided, which can prevent position shift due to its own weight for a short period of time (see the parameter settings in Instruction Manuals for the setting method [Selection of the stop method]).
Please refer to it.)
However, if the load is heavy, misalignment may occur.
Also, the holding force is lower than that of a servo motor.
In the case of lifting equipment, etc., there is a possibility of it falling due to its own weight, so we strongly recommend using products with brakes.

Back to Questions
Q39 What is the maximum operating temperature?
A39

The motor and reducer parts can withstand temperatures between 0 and 40°C, while the driver can withstand temperatures between 0 and 50°C.

Back to Questions
Q40 Can it be used outdoors?
A40

Although the motor is IP65 rated, we do not recommend using it outdoors. Please take measures such as providing a separate cover.
In addition, the driver is not waterproof or dustproof.

Back to Questions
Q41 Is it possible to change to a shaft made of a different material (stainless steel, etc.)?
A41

We will consider this, so please contact us with your intended use.

Back to Questions
Q42 What kind of problems are expected to occur if used in a high temperature environment?
A42

The circuit board inside the motor may be damaged, causing the motor to stop working.

Back to Questions