Fail to Adjust Motor Speed | 3Com VFD-D D instruction

Chapter 5 Troubleshooting DD Series

5-10 Fail to Adjust Motor Speed

Motor can run but cannot change speed

Modify the setting		Yes
Modify the setting
	No
	No

	Yes	If the setting of
	Yes	Pr.04-00 to Pr.04-14


		are the same

Check if the setting of the max. frequency is too low

	No
If the setting of frequency		Yes
is out of range(upper/lower)
bound

Modify the setting

Press UP/DOWN key to see if speed has any change

If there is any change of the signal that sets frequency (-10V-10V and 4-20mA)

Yes

No	Check if the wiring between			No
	MI1~MI8 to COM is correct	No	Check if the wiring of
		No
		No
	Yes		external terminal is correct
	Yes

Check if frequency for each step is different

Yes

No If accel./decel. time is very long

Yes

Please set suitable accel./decel. time by load inertia

	Connect		Yes
	correctly


No		Change defective
No		potentiometer
		potentiometer

Change frequency setting

Maybe AC motor drive has malfunction or misoperation due to noise. Please contact DELTA.

5-11

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.

3Com VFD-D D manual Fail to Adjust Motor Speed

Models: VFD-D D

5-10 Fail to Adjust Motor Speed

VFD-D D specifications