Omron R88M-K40030H-S2

Questions and Answers

C
Christopher DixonNov 23, 2025
Why Omron Servo Drives show Main Circuit Power Supply Undervoltage (PN)?
- B
  Bruce BanksNov 24, 2025
  Omron Servo Drives may display a Main Circuit Power Supply Undervoltage error (PN) due to several reasons. If the Undervoltage Error Selection is set to 1, a momentary power interruption between L1 and L3 might have exceeded the specified Momentary Hold Time. Other causes include low power supply voltage, insufficient power supply capacity due to inrush current, phase-failure in 3-phase input models operated with single-phase power, or a faulty Servo Drive. To resolve this, measure the voltage between the connector (L1, L2, and L3) lines. Increase the power supply voltage or change the power supply. Check the Momentary Hold Time setting. Ensure each phase of the power supply is correctly connected, using L1 and L3 for single-phase 100 V and 200 V. Increase the power supply capacity. If the...
M
Michelle MaddoxAug 27, 2025
How to fix Error Counter Overflow in Omron R88M-K40030H-S2 Servo Drives?
- D
  dmillerAug 27, 2025
  To fix an Error Counter Overflow in Omron Servo Drives, the issue arises when position error pulses exceed the Following error window setting. This can occur if motor operation doesn't follow the command or if the Following error window value is too small. Begin by checking if the Servomotor rotates according to the position command pulse. Examine the torque monitor for saturated output torque and adjust the gain accordingly. Maximize the set values on the Positive and Negative torque limit values. Ensure the encoder is wired correctly. Lengthen the acceleration and deceleration times, and reduce the load and speed. If necessary, increase the set value of object 6065 hex.
S
smithelizabethAug 29, 2025
Why Omron Servo Drives show Regeneration Overload?
- E
  ernestsullivanAug 29, 2025
  Omron Servo Drives may show a Regeneration Overload if the regenerative energy exceeds the processing capacity of the Regeneration Resistor. This can occur due to high regenerative energy during deceleration from a large load inertia, high Servomotor rotation speed, or the external resistor's operating limit being restricted to a 10% duty. Check the load rate of the Regeneration Resistor through communications. Increase the capacities of the Servo Drive and the Servomotor, and lengthen the deceleration time. Use an External Regeneration Resistor. Set the Regeneration Resistor Selection to 2.
T
tdixonAug 30, 2025
Why Omron R88M-K40030H-S2 Servo Drives show Servo Drive Overheat?
- T
  Traci WhiteAug 30, 2025
  Omron Servo Drives may overheat if the temperature of the Servo Drive radiator or power elements exceeds the specified value. This can be caused by a high ambient temperature around the Servo Drive or an overload condition. To resolve this, improve the ambient temperature and cooling conditions of the Servo Drive. Additionally, consider increasing the capacities of the Servo Drive and the Servomotor, setting longer acceleration and deceleration times, and reducing the load.
K
Kyle HaydenAug 31, 2025
Why Omron R88M-K40030H-S2 Servo Drives show Encoder Communications Error?
- K
  Kristy IngramAug 31, 2025
  Omron Servo Drives may display an Encoder Communications Error due to a data error, primarily caused by noise. This can occur even if the encoder cable is connected. To address this, ensure the encoder power supply voltage is within the required 5 VDC ±5% range, especially if the encoder cable is long. Separate the Servomotor cable and the encoder cable if they are bundled together. Connect the shield to FG.
J
John JamesSep 23, 2025
What causes encoder communication disconnection error in Omron R88M-K40030H-S2?
- A
  Alexander SantosSep 23, 2025
  If you encounter an encoder communications disconnection error with Omron Servo Drives, it means a disconnection was detected because communications between the encoder and the Servo Drive were stopped more frequently than the specified value. To resolve this, wire the encoder correctly as shown in the wiring diagram and correct the connector pin connections.
M
Michelle WarrenSep 18, 2025
How to fix encoder communication error in Omron Servo Drives?
- J
  Jessica HuynhSep 18, 2025
  If you're experiencing an encoder communications error with your Omron Servo Drives, it's likely due to noise affecting the data from the encoder. To fix this, provide the required encoder power supply voltage 5 VDC ±5% (4.75 to 5.25 V), paying special attention when the encoder cable is long. If the Servomotor cable and the encoder cable are bundled together, separate them. Also, connect the shield to FG.
J
Jeffrey ThompsonSep 18, 2025
What does excessive hybrid deviation error mean for Omron Servo Drives?
- D
  David HarmonSep 18, 2025
  If you're getting an excessive hybrid deviation error on your Omron Servo Drives, it means that during fully-closed control, the difference between the load position from the external encoder and the Servomotor position from the encoder was larger than the number of pulses set as the Hybrid Following Error Counter Overflow Level (3328 hex). Check the Servomotor and load connection. Check the external encoder and Servo Drive connection. When moving the load, check to see if the change in the Servomotor position (encoder feedback value) has the same sign as the change in the load position (external encoder feedback value).
S
Steven HarveySep 9, 2025
What to do if Omron R88M-K40030H-S2 are overloaded?
- G
  Gordon AllenSep 9, 2025
  If you're encountering an overload with your Omron Servo Drives, it means the feedback value for torque command exceeds the overload level specified in the Overload Detection Level Setting (3512 hex). Check if torque (current) waveforms oscillate or excessively oscillate vertically during analog output or communications. Review the overload warning display and the load rate through communications. You can increase the capacities of the Servo Drive and the Servomotor, set longer acceleration and deceleration times, and reduce the load. Alternatively, try readjusting the gain.
K
kirk65Sep 7, 2025
What causes Overspeed in Omron R88M-K40030H-S2?
- S
  Sean AllenSep 7, 2025
  Overspeed in Omron Servo Drives occurs when the Servomotor rotation speed exceeds the value set on the Overspeed Detection Level Setting. This can be due to excessive speed commands, incorrect input frequency, dividing ratio, or multiplication ratio of the command pulse. If overshooting occurs due to faulty gain adjustment, adjust the gain. Ensure the encoder is wired correctly.

Summary

Specifications

3-1 Servo Drive Specifications

Details general specifications, international standards, and EC directives for Servo Drives.

3-2 Overload Characteristics (Electronic Thermal Function)

Explains the overload protection function and shows overload characteristics graphs.

3-3 Servomotor Specifications

Provides general specifications for OMNUC G5-Series AC Servomotors, including compliance standards.

System Design

4-1 Installation Conditions

Details space conditions, mounting direction, and environment operating conditions for Servo Drive installation.

4-2 Wiring

Provides peripheral equipment connection examples for single-phase and 3-phase input servo drives.

4-3 Wiring Conforming to EMC Directives

Details wiring requirements for EMC Directive conformance, including panel structure and cable shielding.

4-4 Regenerative Energy Absorption

Explains regenerative energy absorption and how to calculate it.

EtherCAT Communications

5-2 Structure of the CAN Application Protocol over EtherCAT

5-3 EtherCAT State Machine

5-4 Process Data Objects (PDOs)

Explains PDOs for cyclic communications and PDO mapping settings for application objects.

5-6 Synchronization with Distributed Clocks

Drive Profile

6-1 Controlling the State Machine of the Servo Drive

6-3 Cyclic Synchronous Position Mode

Explains position control using cyclic synchronization, including target position and speed/torque control.

6-5 Touch Probe Function (Latch Function)

Describes the latch function for capturing position actual value and lists related objects and trigger signal settings.

6-6 Fully-closed Control

Explains achieving accurate positioning using external encoders for fully-closed control systems.

6-7 Object Dictionary

Applied Functions

7-1 Sequence I;O Signals

7-4 Backlash Compensation

Explains backlash compensation for position and fully-closed control and lists objects requiring settings.

7-5 Brake Interlock

Explains setting output timing for brake interlock (BKIR) and lists objects requiring settings.

7-6 Electronic Gear Function

Explains the electronic gear function for position control and fully-closed control modes. Lists objects requiring settings.

7-8 Gain Switching Function

Explains switching position loop and speed loop gain and lists objects requiring settings.

Safety Function

8-1 Safe Torque OFF Function

Details the STO function, its PFH value, and precautions for safe use.

8-2 Operation Example

Illustrates operation timings to a safety status, including servo ON/OFF and EDM output.

8-3 Connection Examples

Provides connection examples for using a safety controller with two safety inputs and one EDM output.

Details on Servo Parameter Objects

9-1 Basic Settings

9-2 Gain Settings

Explains Position Loop Gain 1 and its purpose, and shows example graphs for gain changes.

9-3 Vibration Suppression Settings

Details Adaptive Filter Selection, Notch 1 Frequency, Width, and Depth Settings.

Operation

10-1 Operational Procedure

10-2 Preparing for Operation

10-3 Trial Operation

Adjustment Functions

11-1 Analog Monitor

11-2 Gain Adjustment

11-3 Realtime Autotuning

11-4 Manual Tuning

11-5 Damping Control

11-6 Adaptive Filter

11-7 Notch Filters

11-8 Disturbance Observer Function

11-9 Friction Torque Compensation Function

11-11 Feed-forward Function

Troubleshooting and Maintenance

12-1 Troubleshooting

12-2 Warnings

12-3 Errors

12-4 Troubleshooting

12-5 Periodic Maintenance

Omron R88M-K40030H-S2 Specifications

General

Type	AC Servo Motor
Model	R88M-K40030H-S2
Rated Output Power	400 W
Voltage	200 VAC
Protection Class	IP65
Rated Torque	1.27 Nm
Rated Speed	3000 rpm
Maximum Speed	5000 rpm