Special Encoder Applications

Distributors & Sales Representatives Login

FEEDBACK

Special Encoder Applications

Applications:
Gear Motors	Brushless DC Tachometers	Roll/Line Shaft	Ultra-Low Temperature
Pulp & Paper	Metals	Crane & Hoist	Mining
Marine	Wind Power	Hazardous Locations	Brake Encoders

Gear Motors Avtron offers two solutions:	^ Back to Top
	Modular encoders mounted between the motor and gearbox. Additional motor shaft requirements can be as little as 0.83�.
	Available models: AV125, AV850, M56, M85, M115
	Hollow shaft encoders on the non-drive end of the motor.
	Available models: AV685, HS25A, HS35A, HS35M, M3-(3-9, A-J), M4-(3-9, A-J), M6-(4-7), M7, M685

Brushless DC Tachometers

^ Back to Top

K661 brushless tachometer with AV850 encoder, AV485 and foot mounted version shown.

K661 Brushless tachometer shown with AV850, AV485, and AV485 Foot Mount Encoders.

If you have obsolete analog tachogenerators like the GE BC-42, BC-44, BC-46, and 5PY or the Reliance Electric RE-210 you will want to upgrade them without the need to change your drives. These analog tachs were DC Generators that put out voltage signals at 50, 100, or 200 VDC per 1000 RPM. If you are in this situation, Avtron has an ideal solution. Simply install an Avtron encoder on the motor or machine in place of the analog tach and add our K661 Brushless Tachometer in the drive cabinet. The K661 will accept as a standard, a 240 PPR input. It can handle signals up to 24 KHz, and has a maximum voltage output of 300 VDC. The K661 has a selectable 50, 100, or 200 VDC per 1000 RPM output at 3 mA to exactly mimic the original tachogenerator signal. Speed regulation is improved and brush maintenance is eliminated.

The Avtron Model K662 Brushless Tachometer can be used for more modern drives that use a 0-10 VDC. The K660A can be used if you need a 4-20 mA signal.

For more information about the Avtron Brushless Upgrade Solution, choose the Avtron Upgrade.

Roll/Line Shaft

^ Back to Top

There are applications that come up from time to time where an encoder must be mounted to the end of a roll or drive shaft rather than on a motor shaft for instrumentation purposes. The same installation standards apply no matter where the encoder is installed. If you are mounting an encoder on a roll, the easiest way is to drill and tap the end of the roll shaft and thread a 1 1/8" x 2" bolt into it. Cut off the hex head and turn the bolt down to 1". Use an Avtron M3 Mill Duty or M4 Heavy Mill Duty Encoder with a 1" hollow shaft mount and clamp it in place on the shaft. Using the insulating hardware that comes with the M3 Mill Duty Encoder, mount a 1/4" rod with a ball and clevis (looks like a tie rod on both ends, available from Avtron) between the encoder anti-rotation bracket and a convenient location on the machine's base. The mounting arrangement permits the encoder to ride with any end movement of the roll, up to 1" without affecting performance.

Ultra-Low Temperature Applications

^ Back to Top

Avtron offers a full range of models capable of operating outdoors in the coldest conditions. Proven on thousands of oil rigs, wind turbines, mining equipment, and pipelines worldwide.
Models available include:
Modular Encoders: AV125, AV850, M56, M67, M85, M115, rated at -40�C.
Hollow Shaft Encoders: M4-(3-9, A-J), M6-(4-7), M685 , rated at -40�C; M7, rated to -45�C and below.
Solid Shaft Encoders: M4-(1-2), M485, rated to -40�C.