8901 E. PLEASANT VALLEY ROAD
INDEPENDENCE, OHIO 44131-5508
TELEPHONE: (1) 216-642-4234
•
FAX: (1) 216-642-9743
E-MAIL: tachs@avtron.com
•
WEB: www.avtron.com/tachs.htm
Pulse Generator
Instructions
M585
SHAFTach™
INSTALLATION CONSIDERATIONS
In a conventional pulse generator installation, a flexible
coupling is used to compensate for small shaft
misalignment and runout of the driving shaft. Often this
misalignment and runout reduce the life of the mechanical
parts and may cause unwanted modulation of the
electrical output signal.
While misalignment is not a problem with the
SHAFTach™, circular runout of the driving shaft may
cause a once per revolution frequency modulation of the
output signal. Depending upon the application, this may or
may not be acceptable. Typically, a runout of 0.001 TIR or
less will not have an adverse effect.
ITEMS REQUIRED FOR INSTALLATION
The following special items are required for installation:
13⁄4" Spanner Wrench - Avtron P/N 484017 for
the 13⁄4" diameter clamping nut
McMaster-Carr P/N 6975A17
21⁄2" Spanner Wrench - Avtron P/N 484018 for
the 21⁄2" diameter bearing locknut
McMaster-Carr P/N 6975A19
Thread locking liquid - Locktite 242, supplied
Metal Putty (Required for machine shafts with a
keyway.)
UNPACKING INSTRUCTIONS
The M585 is supplied with four main items: the pulse
generator with integral specific option package, the
anti-rotation arm, the mounting board with attaching
hardware, and the V-ring seal. Check and verify all
components received as ordered. Check for external
damage or missing items. This must be handled by the
customer through the shipper.
Check nameplate against your requirement to make sure
proper style, output, PPR, options, and voltage have been
received.
DESCRIPTION
The Avtron Model M585 SHAFTach™ Pulse Generator is
a zero-speed incremental rotary transducer. When
mounted to a machine shaft, it provides a specific number
of electrical pulses per revolution that are proportional to
the shaft’s rotation. The photoelectric sensing system and
electronics are protected by an O-ring sealed, cast
aluminum housing.
The M585 design eliminates the need for shaft couplings,
adapter flanges, or accessory mounting faces. The unit
employs a keyless shaft mount to lock the M585’s rotor to
a 1.125" diameter shaft. The hub is designed to maintain
concentricity of the rotor and shaft, providing an accurate
output signal. An anti-rotation arm prevents rotation while
allowing for shaft end float.
The available options for the M585, and how they are
indicated in the M585 part number, are shown below:
MODEL STYLE PPR OPTIONS
M585 1 R 1024 B N 15
15 12 TO 15 VDC
24 24 VDC
B MS CONNECTOR WITH
NON CONDUCTIVE ADAPTER
C MS CONNECTOR
L 90° MS CONNECTOR
M WIRE LEADS WITH
NON CONDUCTIVE ADAPTER
N WIRE LEADS
S TERMINAL BOX WITH
NON CONDUCTIVE ADAPTER
T TERMINAL BOX
B BIDIRECTIONAL
PPR (PULSES PER REVOLUTION)
R SINGLE OUTPUT
D DUAL ISOLATED OUTPUTS
(ONE EACH SIDE)
1 STUB SHAFT
2 THRU SHAFT
3 SHAFT GROUNDING
BASIC MODEL NUMBER
INSTALLATION
MACHINE SHAFT PREPARATION
Preparing the machine shaft prior to Pulse Generator
installation is essential in providing an adequate barrier against
environmental contamination. In some cases, a separate stub
shaft (1.125" D x 4.5" long) will be installed on the motor. To
prepare the machine shaft that the M585 is to be installed on,
conduct the following procedures (see figures):
1. Remove from the M585 the four 1⁄4-20 UNC machine
screws which hold the end cap on the cover plate.
2. Remove the end cap, O-Ring, and wave spring, noting
the location of each to assist in reassembly.
CAUTION
SPANNER WRENCHES MUST BE USED DURING THE
FOLLOWING PROCEDURES. Using a substitute can distort
the 13⁄4" nut and damage the unit. Do not try to remove the
21⁄2" bearing locknut at any time. This locknut is factory adjusted
for optimum M585 performance.
NOTE
Two spanner wrenches, which are required for M585
installation, accommodate the 13⁄4" and 21⁄2" nuts found under
the cap.
3. Holding the 21⁄2" bearing locknut, remove the 13⁄4"
diameter clamping nut and slide out the internal compression
sleeve.
4. Verify that the compression sleeve can be installed by
hand on the shaft where the unit is to be installed. File any
burrs that obstruct sleeve installation and lightly oil the shaft.
5. If a keyway or flat exists on the shaft, provide a sealing
medium or true shaft back to round using metal putty or equal.
6. Return the compression sleeve to the M585 hub.
7. Thread the 13⁄4" clamping nut onto the M585 by hand until
resistance is felt. DO NOT TIGHTEN AT THIS TIME.
PULSE GENERATOR INSTALLATION
Installing the M585 and Anti-Rotation Arm:
1. The free end of the Anti-Rotation Arm must be secured
by the customer to a
stationary member such
as the floor or machine
frame. Refer to “Anti-
Rotation Arm Mounting
Guidelines” on the last
page for general re-
quirements.
2. Based on the
location of the sta-
tionary point and the
guidelines on page 4,
attach the 1⁄4" thick
mounting board pro-
vided to one of five
places on the M585.
Use two 1⁄4-20 UNC by
3⁄4" long machine screws
provided.
3. Ensure that the machine shaft is lightly oiled. Apacket of
silicone grease is provided to lubricate the following shaft seals:
First, ALL M585 types have an O-ring inside their hollow shafts
at the motor end. In addition, in THRU SHAFT types, the
clamping nut has an O-ring on the inside, plus the outside of the
clamping nut requires lubrication for the radial lip seal per step
8b. Slide the M585 onto the machine shaft, mounting board
first. Ideally, the M585 housing will be 1⁄2" to 1" from the motor or
machine housing, but this may vary depending on the machine
profile and the anti-rotation arm clearance requirements.
Consider shaft end float when positioning the M585.
4a. FOR STUB SHAFT APPLICATIONS, place the M585
31⁄4" to 4" onto the shaft. The end of the machine shaft must
extend completely through the M585 compression sleeve and
be approximately flush with the end of the 13⁄4" clamping nut.
4b. FOR THRU SHAFT APPLICATIONS, position the M585
as required.
5. Attach free end of the Anti-Rotation Arm to the
1⁄4" mounting board using the shoulder bolt provided.
6. Remove 13⁄4" clamping nut and apply liquid thread locker
to the threads. (Locktite grade 242, supplied, should be used in
most applications.) NOTE
Where thread locker has been used, additional force is required
for M585 removal.
7. Replace 13⁄4" clamping nut and tighten so the gap is less
than or equal to 0.09", as shown in CLAMPING NUT sketch
(approx. 15-20 ft-lbs), holding the 21⁄2" bearing locknut in place.
Spanner wrenches are required for this operation.
8a. FOR STUB SHAFT INSTALLATIONS, replace the end
cap with the wave spring (loading spring) against the bearing
and the O-ring located in the cap groove. Secure the end cap
with the four 1⁄4-20 UNC machine screws previously removed.
Apply the supplied grade 242 Locktite to the screws when
assembling.
8b. FOR THRU SHAFT APPLICATIONS, prior to replacing
the end cap per step 8a, apply a small amount of silicone
grease (provided) to the seal surface on the 13⁄4" clamping nut.
The radial lip seal in the end cap will seal on this surface.
OPERATING POWER (EACH OUTPUT)....................................
OUTPUT SIGNAL........................................................................
PULSES PER REVOLUTION.................................................
WAVE SHAPE.........................................................................
VOLTAGE OUTPUT................................................................
OUTPUT PROTECTION.........................................................
FREQUENCY..........................................................................
MECHANICAL
SHAFT DIAMETER REQUIREMENTS ...................................
SPEED RANGE ......................................................................
STARTING TORQUE..............................................................
HUB INERTIA. ........................................................................
ACCELERATION (MAX.)........................................................
OPERATING TEMPERATURE....................................................
WEIGHT.......................................................................................
15 V OPERA TING V OLTAGE
12 TO 15 VDC AT APPROX. 70 mA (NO LOAD)
TWO CHANNELS IN QUADRATURE
(2-PHASE, BIDIRECTIONAL)
240, 360, 600, 1024, 1200, 2048 PPR
STANDARD — OTHERS AVAILABLE
UPON REQUEST
SQUARE WAVE
HIGH: SUPPLY VOLTAGE MINUS 1 VOLT
(NO LOAD)
120 OHMS PULL-UP
LOW: 1.0 VOLT MAX.
50mA SINK
SHORT CIRCUIT PROTECTION TO COMMON
50 KHz MAX.
1.125 +.000/-.003 INCHES
0 TO 3600 RPM
3.9 OZ.-IN. (TYP.)
0.5 OZ.-IN.-SEC2
3000 RPM/SEC
00TO 16 0 0F AMBIENT
15 LBS.
24 V OPERA TING V OLTAGE
24 VDC AT APPROX. 70 mA (NO LOAD)
TWO CHANNELS IN QUADRATURE
(2-PHASE, BIDIRECTIONAL)
240, 360, 600, 1024, 1200, 2048 PPR
STANDARD — OTHERS AVAILABLE UPON
REQUEST
SQUARE WAVE
HIGH: SUPPLY VOLTAGE MINUS 1 VOLT
(NO LOAD)
330 OHMS PULL-UP
LOW: 1.0 VOLT MAX.
50mA SINK
SHORT CIRCUIT PROTECTION TO COMMON
50 KHz MAX.
1.125 +.000/-.003 INCHES
0 TO 3600 RPM
3.9 OZ.-IN. (TYP.)
0.5 OZ.-IN.-SEC2
3000 RPM/SEC
00TO 16 0 0F AMBIENT
15 LBS.
WIRING CONSIDERATIONS
For bidirectional operation of the
SHAFTach™, proper phasing of the two
output channels is important. Phase Achannel
leads phase B channel for clockwise rotation
as viewed from the end-cap (anti-drive) end of
the generator.
Interconnecting cables specified in the wiring
diagrams are based on typical applications.
Refer to the system drawing for specific cable
requirements where applicable.
Physical properties of cable such as abrasion,
temperature, tensile strength, solvents, etc.,
are dictated by the specific application.
General electrical requirements are: stranded
copper, 22 thru 16 gauge, braid or foil with
drain wire, 0.05 MF maximum total mutual or
direct capacitance, outer sheath insulator,
1,000 ft. max.
ENVIRONMENTAL CONSIDERATIONS
Special attention is to be given to conduit runs, interconnection
wiring and NEMA type enclosure mounting. In those applications
where ambient temperatures are controlled within 40°F and high
humidity/washdown are not present, position the flexible conduit
with a slight sag to prevent any condensation from entering the
SHAFTach via conduit.
In harsh environments, which include temperature extremes,
high humidity, equipment washdown or atmosphere
contamination, extra care is required for interconnection. Follow
these steps to reduce potential problems:
1. Always mount connection points, conduit couplings,
junction boxes, etc., lower than actual generator.
2. Venting of generator is beneficial. One method is to take
conduit run outside of hostile area where practical. (Applies to
conduit installations only.)
3. For washdown areas, shroud or otherwise cover the
SHAFTach to prevent direct water spray. Do not attach the
shroud directly to the generator.
4. Keep conduit outputs and axis of rotation horizontal.
5. Purging of SHAFTach should be reviewed with Avtron.
M585 SPECIFICATIONS
N
OUTPUT OPTIONS
CT
RED
BLUE
GREEN
BLACK
B
E
D
A
+V
B
A
COM
M585 FOR SINGLE ENDED
APPLICATIONS
CABLE BELDEN #8723
OR EQUIVALENT
OPERATING
VOLTAGE
0B
0A
COMMON
GROUND
FOR SINGLE ENDED APPLICATIONS
FUNCTION
GREEN
YELLOW
BLUE
GRAY
BLACK
RED
D
B
A
G
E
H
A
A
+V
COM
B
B
M585
FOR DIFFERENTIAL
APPLICATIONS
CABLE BELDEN #9773
OR EQUIVALENT
0A
OPERATING
VOLTAGE
COMMON
0A
0B
0B
GROUND
FOR DIFFERENTIAL APPLICATIONS
NOTE: 5’ FLEXIBLE CONDUIT STANDARD
FOR ALL OUTPUT OPTIONS
M585WD.MAC
WIRING DIAGRAM
ANTI-ROTATION ARM MOUNTING
GUIDELINES
The Anti-Rotation Arm stabilizes the SHAFTach and
keeps it from rotating as the motor shaft rotates. To mount
the Anti-Rotation Arm, use these guidelines:
1. Mount SHAFTach with conduit entry ports
positioned horizontally.
TOP VIEW
ADJUSTABLE
ANTI-ROTATION ARM
ROD END
STATIONARY (STATIC)
MOUNTING POINT OF
ANTI-ROTATION ARM
5/16–24 SHOULDER BOLT
BOTH ENDS
12.00 MAX
90°AXIS OF MOTOR
SHAFT
MOUNTING
BOARD
90°
OPTIONAL
MOUNTING
POSITIONS END (INBOARD) VIEW
2.75 REF
5.12
MOTOR
1.56 REF
SHAFTach M585
V-RING SEAL
M585TORQ.MAC
2. Mount Anti-Rotation Arm perpendicular to motor
shaft axis of rotation. Arm mounting bolts and associated
rod bearings should be parallel to motor shaft also.
(Viewed from above.)
3. Mount Anti-Rotation Arm 90°to a line established
between mounting board, mounting hole, and shaft
centerline. (Viewed from end.)
4. Mount SHAFTach as close as possible to the motor
with the mounting board closest to the motor.
5. Establish a stationary (static) mounting point for the
free end of the Anti-Rotation Arm, using the guidelines
above. Use the shoulder bolt provided to fasten arm to
stationary point.
6. The Anti-Rotation Arm can be adjusted in length.
The recommended length is 8 to 12 inches.
5FT OF FLEXIBLE
WATERPROOF CONDUIT
BETWEEN PULSE GEN.
AND JUNCTION BOX.
0.312 DIA.
4 HOLES
2.25 9.25 4.62
30
°
45
°
60
°
1/4-20 UNC-2B
6 HOLES SPACED
AS SHOWN ON A
7.75 DIA
HOLE FOR SHAFT
OF 1.125 DIA MAX
OPTION "C" MS CONNECTOR
OPTION "B" MS CONNECTOR
WITH NON-METALLIC ADAPTER
OPTION "N" WIRE LEADS
OPTION "M" WIRE LEADS
WITH NON-METALLIC ADAPTER
MS3101F18-1P
MS3106F18-1S
FLEXIBLE
METAL
CONDUIT
4.75
MIN
5FT
8.50 DIA
0.42
MAX
4.30
OPTION "L"
90
°
MS CONNECTOR
0.38
5.50 4.75
1.12
7.00
2.00
3.00
4.25 SQ
1.28
2.00
OPTION "T" TERMINAL BOX
OPTION "S" TERMINAL BOX
WITH NON-METALLIC ADAPTER
1.094 DIA
HOLE FOR 3/4"
CONDUIT ENTRY
3.13
0.09
M585OL.MAC
8901 E. PLEASANT VALLEY RD., INDEPENDENCE, OH 44131, U.S.A. • (1) 216-642-4234 • FAX (1) 216-642-9743 • www.avtron.com/tachs.htm
AVTRON STANDARD WARRANTYAPPLIES • FEATURES SUBJECT TO CHANGE
WITHOUT NOTICE • ALL DIMENSIONS ARE IN INCHES AND ARE APPROXIMATE
REV. 10-12-01
