Over Current oc, Ocd | 3Com VFD-D D specification

Chapter 5 Troubleshooting DD Series

5-1 Over Current (oc)

ocA

Over-current during acceleration

ocd

Over-current during acceleration

OC

Over current

Remove short circuit

Yes

Check if there is any short circuits and

or ground fault

grounding between the U, V, W and motor

No

No

No

Reduce the load or

Yes

increase the power

If load is too large

of AC motor drive

No

No

No

No Reduce torque

No Suitable torque

compensation

compensation

Yes

Yes

Reduce torque

compensation

No

Check if

No

Check if

acceleration time

deceleration time

is too short by

is too short by

load inertia.

load inertia.

Yes

Yes

Maybe AC motor drive

has malfunction or error

due to noise. Please

No

Is load changed

contact DELTA.

suddenly?

Yes

Yes

Can acceleration

Yes

Can deceleration

time be made longer?

time be made longer?

No

No

Increase accel/decel

Reduce load or increase

time

the power of AC motor

drive

Reduce load or increase

Check braking

the power of AC motor

method. Please

drive

contact DELTA

5-2

Image 107

3Com VFD-D D manual Over Current oc, Ocd

VFD-D D specifications

The 3Com VFD-D D is an advanced networking solution designed to meet the demands of modern communication and connectivity. As part of 3Com's extensive portfolio of networking products, this device stands out due to its robust features, innovative technologies, and characteristics that cater to various enterprise environments.

One of the main features of the 3Com VFD-D D is its high-speed data processing capability. Operating at speeds that comfortably support high-bandwidth applications, the device is equipped to handle a multitude of simultaneous connections without compromising performance. This makes it an ideal choice for businesses where consistent, fast access to data is critical.

In terms of connectivity options, the VFD-D D supports a variety of protocols, allowing it to seamlessly integrate with existing infrastructure. Whether through Ethernet, Fiber Channel, or wireless technologies, the device offers versatility in connecting diverse network configurations. This adaptability ensures that organizations can optimize their network setups according to their specific requirements.

The 3Com VFD-D D also boasts advanced security features designed to protect sensitive data from potential threats. With built-in encryption protocols and secure access measures, the device safeguards information while offering administrators full control over user permissions. This heightened security is especially important in today's risk-laden digital landscape, providing peace of mind for organizations entrusting their data to the network.

Moreover, the VFD-D D is designed with scalability in mind. Its modular architecture allows businesses to expand their network capabilities as needed, ensuring that the device can grow alongside their evolving requirements. This flexibility helps organizations manage costs effectively while preparing for future technological advancements.

Another characteristic that sets the 3Com VFD-D D apart is its user-friendly management interface. Administration tasks can be performed quickly and intuitively, reducing the burden on IT staff while enabling efficient network monitoring and troubleshooting. With real-time analytics and reporting capabilities, organizations can gain valuable insights into their network's performance.

Overall, the 3Com VFD-D D combines speed, security, and scalability in a single device, making it a powerful addition to any enterprise network. Its advanced features and technologies are tailored to support the dynamic needs of modern businesses, ensuring reliable performance and robust connectivity in an increasingly interconnected world.

Contents

Preface Page Page Table of Content Page Introduction Explanation for Model Nameplate Information 02DD21A0 T 0 Explanation for Series Number Minimum Mounting Clearances Preparation for Installation and Wiring Introduction DD Series Dimension ECMD-B9160GMS Wiring Wiring Diagram Wiring/Terminals Setting Good Main Circuit Terminal WiringDD Series Control Circuit Terminal Digital Inputs CD, OD, MI1~MI5, COM Keypad and Start-up 24V Operation Method Descriptions of Digital Keypad Outlook Keypad Descriptions Parameter Settings System Parameters Summary of Parameter Settings Focpg Motor Parameters VFP SVC FOC NUD Input/Output Parameters VFP SVC FOC Parameter SettingsDD Series Feedback Parameters Door Open Parameters VF VFP SVC FOC FOC Door Close Parameters VFP SVC FOC Protection and Special Parameters Same time, but without reaction Phase current detection error cd2 Auto Reset Time for Restart VFP SVC Control Parameters Multi-step Speed Parameter Communication Parameters User-defined Parameters VFP SVC FOC View User-defined Parameters System Parameter Description of Parameter Settings Software version Password InputPassword Set 060-07 Control Method 05.08 05.00 05.05 05.07 Door Control Mode Output Direction Auto Voltage Regulation AVR Function Source of the Master Frequency CommandDemo Mode Frequency Testing Command Parameter SettingsDD Series Motor Auto Tuning PM Number of Motor Poles PM Rated Power of Motor PMFull-load Current of motor PM Rated Speed of PM Motor rpm Magnetic Pole Re-orientation PM Motor Auto Tuning IM Number of Motor Poles IM Rated power of Motor IMFull-load Current of Motor IM Rated speed of IM Motor rpm Slip Compensation Gain Torque Compensation Time ConstantSlip Compensation Time Constant Torque Compensation Gain Output Voltage Output Frequency 1Base frequency /Motor rated frequencyOutput Voltage 1Base voltage/Motor rated voltage Output Frequency Parameter SettingsDD Series Settings 0.00~120.00Hz Multi-Function Input 4 MI4 Multi-Function Input 1 MI1Multi-Function Input 2 MI2 Multi-Function Input 3 MI3 Functions Descriptions Multi-function Output Relay2 Digital Terminal Input Debouncing Time MD-5-13Digital Input Operation Direction Multi-function Output Relay1 VF Vfpgsvcfocpg Focpm Multi-function Output MO3 Digital Output Direction Position Detection Signal Position Detection Signal Encoder pulse Encoder Input Type Setting Door Width Auto-tuning Encoder Feedback Fault Treatment PGF1, PGF2Detection Time for Encoder Feedback Fault Encoder Stall and Slip Error Treatment Door Width Pulses Unit1 Door Open High Speed Door Open by Initial SpeedDoor Open Distance by Initial Speed Door Open Time by Initial Speed Holding Time for OD Open DoorTerminal Door Open Time-out SettingDoor Open Holding Torque Door Open DC Brake Current Level Door Open DC Brake Time when StartupDoor Open DC Brake Time when Stopping Door Open Acceleration Time of S1 Curve Door Open DC Brake Starting Frequency Door Close High Speed Door Close initial SpeedDoor Close Distance by Initial Speed Door Close Time by Initial Speed Holding Time for CD Close DoorTerminal Door Close Time-out SettingDoor Close Holding Torque Door Close DC Brake Current Level Door Close DC Brake Time when StartupDoor Close DC Brake Time when Stopping Door Close Acceleration Time of S1 Curve Door Re-open Current Level 1 for Low Speed Area Door Close DC Brake Starting FrequencyDoor Re-open Current Level Door Re-open Current Level 1 for Acceleration Area Door Re-open Detection Time Door Close Error Deceleration Time Forward Motor Torque Limit ED Setting of Brake ResistorSoftware Braking Level Current Boundary Action after door re-open/re-close High Temperature Overheat Warning OHEmergency/Force Stop Deceleration Method Low Voltage Level Door Open/Close Holding Time Before Next Demo Position Control ModeStall Current Level of Position Mode Clear Demo Mode Door Open/Close Record Times of Door Opened/Closed in Demo Mode LTimes of Door Opened/Closed in Demo Mode H Electronic Thermal Overload Relay Selection Electronic Thermal Characteristic Auto Reset Time for Restart after Fault Auto Restart After Fault Control Parameters Inertia Ratio Zero Speed/ASR1 Width AdjustmentASR1/ASR2 Width Adjustment Mechanical Gear Ratio Gain for Speed Feed Forward Multi-step Speed Parameter Communication Protocol Transmission Fault TreatmentTransmission Speed Time-out Detection Start Stop Bit Bit character Bit character frame Even Start Stop Response message STX ADR 0FH Opening door is prohited Status monitor Example Response Delay Time 3rd Output Voltage Mid-point voltage 2nd Output Frequency Mid-point frequency2nd Output Voltage Mid-point voltage 3rd Output Frequency Mid-point frequency Frequency Testing Multi-function Input Multi-function Input Terminal Direction ~ View User-defined Parameters Multi-function Output RY1Multi-function Output RY2 1 B X16 1+11 x160=16+11=27 Enter View User-defined Parameters Troubleshooting Ocd Over Current oc GFF Ground Fault GFF Over Voltage ov Low Voltage Lv Over Heat oH1 Overload oL Digital Keypad Display is Abnormal Yes Phase Loss PHL Motor is not Running Fail to Adjust Motor Speed Motor Stalls during Acceleration Motor Run Error 13Electromagnetic/Induction Noise Environmental Condition Prevent Interfere to Other Machines High Harmonic at Power Side Fault Codes and Descriptions Stop Common Problems and Solutions Fault Codes and Descriptions DD Series Fault Codes and Descriptions DD Series Fault Codes and Descriptions DD Series Reset Check Items Methods and Criterion Period Maintenance and Inspections „ Main circuit „ Resistor of main circuit „ Cooling fan of cooling system F, 2 VF+PG, 3 SVC, 4 FOC+PG, 6PM FOC+PG Control Characteristics RESET, FWD/REV Motor Specifications Appendix B How to Select AC Motor Drive Capacity Formulas When one AC motor drive operates one motor Symbol explanation Drives Selection General Precautions Standard motor How to Choose a Suitable Motor Special motors Motor torque