AV45
2
ADAPTIVE ELECTRONICS
A perfect duty cycle consists of a waveform whose “high” and
“low” conditions are of the same duration (50%/50%). It is possible
over time for the duty cycle and edge separation to change due
to component drift, temperature changes, or mechanical wear.
The Adaptive Electronics extend the life of the AV45 by constantly
monitoring and correcting duty cycle and edge separation over time.
FAULT-CHECK
If the Adaptive Electronics reach their adjustment limit, the LED will
turn red and Fault-Check alarm will notify the drive and operator of
an impending failure. This output can occur before a failure, allowing
steps to be taken to replace the unit before it causes unscheduled
downtime. Fault-Check annunciation is available as an “alarm” output
through the connector.
SAFETY
The AV45 is not considered as a safety device and is not suitable for
connection into a safety system. The mechanical overspeed switch
(option 6xx) is suitable for connection into safety systems.
CAUTION
Do not disassemble mechanical overspeed option. Doing
so may modify the overspeed set point or cause the
switch to malfunction. If the factory seals are not intact
on the overspeed switch, do not use it--return to the
factory for service and calibration.
WARNING
Installation should be performed only by qualified
personnel. Safety precautions must be taken to ensure
machinery cannot rotate and all sources of power are
removed during installation.
INSTALLATION
Refer to the back page of these instructions for outline and mounting
dimensions.
Supplied:
AV45 Encoder
Optional:
Foot Mount Kit
Thread Locker (blue)
Not Supplied:
Dial Indicator Gauge
Caliper Gauge
The encoder must be driven by a positive drive rather than a friction
drive. The following means of coupling are acceptable when properly
installed: Direct Coupling.
With a direct drive, use a flexible disc coupling and align the shafts as
accurately as possible. For motors with a pre-aligned flange, it is also
acceptable to use a “spider” or “jaw” coupling type. If a rubber slinger
disc is used, position it on the shaft so it will rotate freely.
CAUTION
Do not force or drive the coupling onto the shaft, or
damage to the bearings may result. The coupling should
slide easily on the shaft. Remove nicks and burrs if
necessary. Consider driving shaft endplay & axial
movement when positioning coupling.
For more details on alignment specifications, measurement
techniques, and special considerations in specifying and installing
drive components, refer to separate installation instructions in the
Avtron PULSE GENERATOR HANDBOOK.
B10 FACE MOUNTING INSTRUCTIONS
1. Apply anti-seize compound [copper], included, to inner
circumference of coupling (both motor and encoder side).
2. Loosen set screws in coupling and apply thread locker to set
screws.
3. Place coupling on motor shaft, inserting to depth per
manufacturer’s instructions.
4. Attach coupling to motor shaft using set screws per
manufacturer’s instructions.
5. Bolt mounting flange (flowerpot) to motor C-Face, using thread
locker with fasteners, included.
6. Slide encoder shaft into other side of coupling. DO NOT FORCE.
Ensure keyway aligns with coupling set screw location.
7. Ensure C-Face on mounting flange matches and aligns with
encoder C-Face precisely.
8. Apply thread locker to hex cap screws.
9. Align bolt holes of encoder and flange, thread in (4) hex cap
screws, using lock washers.
10. Tighten set screws on encoder side of coupling.
FOOT MOUNTING INSTRUCTIONS
Equipment needed for installation
Supplied:
Foot Bracket
(6) M6 Button Hd. Cap Screw
Not Supplied:
M4 Hex Wrench
Dial Indicator
The B10 flange / face is the preferred mounting method for the AV45.
In certain cases, however, it may be necessary to foot-mount this
unit. The optional foot mounting bracket kits, Option 1, 2, or 3, will be
required for standard installations or replacement of foot mounted
Toshiba TS2113N, Hubner HOG & OG, and FG4 units. Read all of the
following instructions and the Avtron PULSE GENERATOR HANDBOOK
prior to beginning any work.
The AV45 performance and life will be directly affected by the
installation. Following this sequence of steps is recommended.
1. Clean and inspect motor/driver shaft. Do not use force to
assemble coupling onto motor/driver shaft. The foot mounting
bracket must be secured to a flat, rigid, vibration free steel or
aluminum base which can be machined to accept the mounting
hardware.
2. Temporarily mount the AV45 to the foot bracket, install the
coupling to the AV45 and driver, and verify that the location is
suitable for installation.
3. If the AV45 encoder, bracket and coupling are suited to the area,
check motor/encoder shaft alignment with a straight edge from
multiple positions around the shaft circumference to verify that it
meets specifications.
4. While maintaining alignment, precisely mark the position of the
foot bracket on its mounting base.
5. Remove the AV45. Transfer punch or layout the mounting hole
pattern as indicated on outline drawing.
6. Machine through holes or tap holes in center of base slots to give
some degree of freedom in final alignment.
7. Reinstall the AV45 with the flexible coupling loosely in place, and
tighten down all mounting hardware. Check motor/encoder shaft
alignment with a straight edge from multiple positions around
the shaft circumference to verify that it meets specifications. Use
thread locker supplied on cap screws which mount AV45 to foot
bracket.
8. Ensure any flat or keyway on the motor and encoder shaft
are aligned with the set screw holes of the flexible coupling.
Apply thread locker to coupling set screws and tighten per
manufacturer’s recommendations.
9. Recheck alignment and tighten all hardware after first several
hours of operation.
