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BC42-BC46-BC66 Brushless Tachometer Upgrade
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E-Mail:
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Phone:
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Special Encoder Applications
Gear
Motors
Avtron offers two solutions: |
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Modular encoders mounted between the motor and gearbox. Additional motor
shaft requirements can be as little as 0.83". |
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Available models:
AV125,
AV850,
AV56, AV85,
AV115 |
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Hollow shaft
encoders on the
non-drive end of the motor. |
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Available models:
AV685,
HS25A,
HS35A,
HS35M, M3,
M4, M6,
M7,
M685 |
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Brushless DC Tachometers |
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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. |
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Roll/Line Shaft |
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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. |
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Ultra-Low
Temperature Applications |
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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,
AV56,
AV67,
AV85,
AV115, rated at -40°C.
Hollow Shaft
Encoders:
AV685,
M4, M6,
XP45 rated at -40°C; M7 rated
to -45°C and below.
Solid Shaft Encoders:
AV485 rated to -40°C. |
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