M4-(1-2)
OUTLINE DRAWING
5.36 (136.14) OPTION 1
5.80 (147.32) OPTION 2
DIM
AA
1.63 (41.40)
3/16 (4.763) SQ KEY
(FURNISHED)
0.50 (12.70)
1/2–14 NPT
1.574
(40.00) 1.968 (50.00)
4.19
(106.43)
0.177 (4.50) DIA. – 4 HOLES
OPTION “X” – SURFACE MOUNTED INDUSTRIAL CONNECTOR
OPTION “Z” – CONNECTOR W/ MATING PLUG
4.500
4.497
DIA
(114.300)
(114.224)
DIA
2.24
(56.90)
AA
2.06 (52.33)
2.64 (67.06)
SHAFT OPTION 2 IS FOR USE
WITH OPTIONAL FOOT BRACKET
SHOWN BELOW
0.12
(3.05)
1.890
(48.00) 2.50 (63.50)
0.16 (4.06)
SHAFT
OPTION
1
2
4.10 (104.14) OPT 1
3.56 (90.43)
4.54 (115.32) OPT 2
PLUG FACE
OPTION “A”
DIA
ZZ
DIA
OPTION “A”
MS BOX CONNECTOR ONLY
OPTION “C”
CONNECTOR W/ MATING PLUG
OPTION “R”
BREATHER PROVIDED MS3112E12-10P BOX
AS STANDARD ON
CONNECTOR ONLY
BOTTOM OF UNIT
3.78
(96.00)
0.91
(23.12)
5.03 (127.76)
OPTIONS “M”, “E”, & “H”
MS CONNECTOR ONLY
OPTIONS “L”, “F”, & “J”
CONNECTOR W/ MATING PLUG
2.12
(53.85)
OPTION
E&H
F, J, & K
M
L
45°
YY
ZZ
3.34 (84.84)
5.62 (142.75)
2.75 (69.85)
5.44 (138.18)
6.88
(174.75)
36.00
(914.40)
MIN.
OPTIONAL
FOOT BRACKET
INCLUDES ALL HARDWARE NECESSARY
FOR MOUNTING PULSE GENERATOR AND
FOOT BRACKET TO MACHINE BASE.
FOR USE WITH SHAFT OPTION 2.
DIMENSION
W/O PLUG - OVER
DUST COVER
0.73
(18.54)
3.62
(92.08)
7.25
(184.15)
1/2–14 NPT
OPTION “S”
MS3112E12-10P
CONNECTOR
3/8–16 UNC–2B THREAD
4 HOLES EQUALLY SPACED
ON A 5.875 (149.225) DIA. B.C.
SEE NOTE 3
OPTION “V”
INDUSTRIAL CONNECTOR
OPTION “P”
CONNECTOR W/ MATING PLUG
OPTION “W”
SEALED FLEX CABLE
0.48
(12.26)
2.65
(67.43)
REF
FOOT MOUNT BRACKET P/N A22232
SHAFT
BB
CC
OPTION
1
1.48 (37.59) 3.00 (76.20)
2
2.06 (52.33) 3.58 (90.93)
0.33 x 0.77 SLOT
(8.38 x 19.56)
5.31
(134.87)
4 PLACES
0.23
(5.84)
2.24 (56.90)
0.58
(14.73)
REF
M4 ENCODER
0.94
(23.88)
3.00
(76.20)
OPTION “B”
1/2" FLEXIBLE METAL
WATERPROOF CONDUIT/
MS CONNECTOR
0.41
(10.41)
3.50
(88.90)
36.00
(914.40)
Ø 2.00
(Ø 50.80)
P/N A22232
CC
Ø 0.6250 REF
(Ø 15.875)
0.33 x 1.15 SLOT
(8.38 x 29.21)
4 PLACES
FOOT MOUNT BRACKET P/N A25448
SHAFT
BB
CC
OPTION
1
1.48 (37.59) 4.78 (121.41)
2
2.06 (52.33) 5.36 (136.14)
4 – DIMENSIONS IN PARENTHESIS ARE MILLIMETERS.
3 – PILOT MOUNTING CONFORMS TO A NEMA 56C FACE.
2 – ALL DIMENSIONS ARE APPROX.
1 – WEIGHT: 7 LBS.
NOTES:
5.02
(127.50)
0.39
(9.94)
2.51
(63.75)
REF
3.00 (76.20)
2.72
(69.09)
CC
Ø 0.6250 REF
(Ø 15.875)
5/8" SOLID SHAFT
CAUTION
7.10 (180.34)
3.63
(92.20)
3.29
(83.57)
Replaced by Model AV485
RETURN TO FACTORY FOR REPAIR
WARRANTY VOID IF OPENED
YY
OPTIONS “N” & “T”
Conduit box w/1/2–14 NPT
Inactive Design
T E L E P H O N E : ( 1 ) 2 1 6 - 6 4 2 - 1 2 3 0 • FA X : ( 1 ) 2 1 6 - 6 4 2 - 6 0 3 7
E - M A I L : t a c h s @ a v t r o n . c o m • W E B : w w w. a v t r o n e n c o d e r s . c o m
DIA
0.6250
0.6245
(15.8750)
(15.8623)
M4-1 and M4-2
8 9 0 1 E . P L E A S A N T VA L L E Y R O A D
INDEPENDENCE, OHIO 44131-5508
CLEVELAND, OHIO
PLUG FACE
OPTION “K”
1/2" FLEXIBLE METAL
WATERPROOF CONDUIT/
MS CONNECTOR
COVER PLATE
SINGLE OUTPUT
INDUSTRIAL AUTOMATION, INC.
2.12
(53.85)
6.50
(165.10)
Encoder
Instructions
6.45 (163.83) OPTION “B”
6.25 (158.75) OPTION “C”
BB
0.68
(17.27)
5.00
(127.00)
BREATHER
VENT
2.24 (56.90)
0.58
(14.73)
REF
AVAILABLE RESOLUTIONS
The Avtron Model M4-1 and M4-2 Solid Shaft Encoders are heavy
duty speed and position incremental trans­ducers (also known as
tachometers or rotary pulse generators). When coupled to a motor
or machine, their output is directly pro­portional to shaft position
(pulse count) or speed (pulse rate). The M4 operates down to
zero speed and can be used for both control and instrumentation
applications.
LOW
240
256
300
MEDIUM
480
512
600
HIGH
960
1024
1200
1. M4 Encoder
2. Anti-Seize Compound (copper)
Not Supplied for NEMA 56C Face Mounting:
Hex Head Bolt
3/8-16 x 1.00 (8)
Washer, Flat 3/8 (8)
Washer, Lock 3/8 (8)
Various bolts, wrenches,
flats and lock washers for
motor side of flange adapter.
Thread Locker (Loctite
242 recommended)
These outputs are available as single phase; two-phase (A,B)
––
90° apart for direction sensing; with complements (A,B ), (A
–
Quad B Output) and with marker pulse (Z,Z ). Output resolution is
determined by the rotor’s base PPR (pulses per revolution), times
a sensor multiplier. The sensor module can provide: 1/2 the base
PPR, the base PPR, or double the base PPR (see table). With
two outputs, the same encoder can provide two different PPRs
from a given rotor at the same time. Only one rotor per encoder
is possible.
9/16" Hex Wrench Socket
or open end style
Shaft Coupling
Motor Adapter Flange
Dial Indicator
Optional:
Foot Bracket Mounting Kit (A22232/A25448)
(see foot mounting instructions for additional hardware required)
DRIVE INSTALLATION INSTRUCTIONS
Do not use a timing belt, pulley, chain, or sprocket to drive M4s.
Use a flexible disc coupling and align the shafts as accurately as
possible. EXAMPLE: For a size 62 Thomas Miniature Coupling
angular mis­align­ment must be less than 1.34°, parallel misalignment
less than 0.028", and axial float less than ±0.031". Overhung loads
should also be minimized. If a rubber slinger disc is used, position
it on the shaft so it will rotate freely.
Example: an M4 could use a 1024 PPR sensor output on one
side for feedback to a drive system, and simultaneously use a 256
PPR sensor on the other side for a process computer.
M4 PART NUMBERS AND AVAILABLE OPTIONS
-60 OPTION
Supplied:
All M4s can be equipped with one or two outputs. Each output is
electrically independent and totally isolated.
P/N A25448
-51 OPTION
Equipment needed for installation
The enclosures on all Model M4s help protect the internal
components from the entry of dust and liquids. This, along with
the fact that the M4 uses magnetoresistive sensing technology,
makes the M4 ideal for demanding industries like paper, metals,
and chemical processing.
Refer to separate instructions for additional information on the
shaft grounding option.
-48 OPTION
INSTALLATION
Mechanically, the M4-1 mounts on a NEMA 56C adapter flange.
The M4-2 can be foot mounted by using an optional foot mounting
bracket kit P/N A22232 or P/N A25448.
M4 ENCODER
Ø 2.00
(Ø 50.80)
BREATHER
VENT
DESCRIPTION
0.68
(17.27)
BB
6.69
(169.88)
Model
EU DECLARATION OF CONFORMITY The Model M4 Encoder has been assessed and type tested against the following Harmonized European
Standards: EN 50081-1:1992, EN 50082-1:1998. The Model M4 has been found to be compliant with the requirements of EU Directive 89/336/
EEC provided that the following conditions are met: The electrical supply to the M4 must be within specified limits. The electrical supply must offer
suitable protection from voltage surges unless the application does not require such protection. On behalf of Avtron Industrial Automation, Inc.:
Stephen L D’Henin, Certification Manager, Epsilon Certification Service.
M4-
Mounting
Style
0- Non-Standard
1- Face Mount
5/8" x 2" shaft
2- Foot Mount
5/8" x 2.64"
(2" net) shaft
Shaft Style Line Driver
S- Single
1- 5 to 24 VDC
Ended Shaft 2- 5 to 18 VDC
G-Shaft Ground 3- 18 to 24 VDC
4- 5 to 24 V in,
5 V fixed out
Left & Right
Output Range
X- None
L- Low Range
(Base PPR x 1/2)
M-Medium Range
(Base PPR x 1)
H-High Range
(Base PPR x 2)
10 Pin Connector
REV. 03-02-09
Z- Marker
– -None
A- without Plugs
K-with Flex. Conduit
B- with Flex. Adapterb
Conduit Adapters L-elbow with Plugb
C- with Plugs
M-without Plugb
G-K927B replacement with Plugs
s
5 Pin MS Connector
MS mini
EPIC
R- Baldor
Twist Lock
without Plug
S- Baldor on
3 ft. Pigtail
P- with Plug
V- without Plug
MS
8901 E. PLEASANT VALLEY RD., INDEPENDENCE, OH 44131, U.S.A. • (1) 216-642-1230 • FAX (1) 216-642-6037 • www.avtronencoders.com
48- 480
51- 512
60- 600
Marker Connector
Modifications
000005009030-
None
-40° C Rating
Northstar pinout (mini-Epic)
Dynapar Pinout (MS)
Connector
Features and specifications subject to change without notice.
Avtron standard warranty applies. All dimensions are in inches (mm) approx.
INDUSTRIAL AUTOMATION, INC.
Base
PPR
side exit
b
bottom exit
M737A replacement
E- without Plugs
F- with Plugs
M727A replacement
H- without Plugs
J- with Plugs
Conduit Box
3 ft. Flex. Cable
N- with color coded
leads
T- with Terminal
Block
W-Sealed, Pigtail
X- Sealed, Industrial
Connector without
Plug
Z- Sealed, Industrial
Connector with Plug
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 when positioning coupling.
For more details on alignment specifications, measurement tech­
niques, and special considerations in specifying and installing
drive components, refer to separate installation in­struc­tions in the
Avtron PULSE GENERATOR HANDBOOK.
NEMA 56C FACE MOUNTING INSTRUCTIONS
1) Disconnect power from equipment and encoder cable.
2) Apply anti-seize compound to inner circumference of coupling
(both motor and encoder side).
3) Loosen set screws in coupling and apply thread locker to set
screws.
4) Place coupling on motor shaft, inserting to depth per
manufacturer’s instructions.
5) Attach coupling to motor shaft using set screws per
manufacturer’s instructions.
6) Bolt mounting flange (flowerpot) to motor C-Face, using thread
locker with fasteners.
7) Slide encoder shaft into other side of coupling. DO NOT
FORCE. Ensure 1/4" keyway aligns with coupling set screw
location.
8) Ensure C-Face on mounting flange matches and aligns with
encoder C-Face precisely.
9) Apply thread locker to hex cap screws.
10)Align bolt holes of encoder and flange, thread in (4) hex cap
screws, using lock washers.
11)Tighten set screws on encoder side of coupling.
FOOT MOUNTING INSTRUCTIONS
Equipment needed for installation
Supplied:
1. Foot Bracket (A22232/A25448) 4.
2. Hex Head Bolt 5.
3/8-16 x .75 (4)
6.
3. Hex Head Bolt 7.
5/16-18 x 1.50 (4)
Nut, Hex 5/16-18 (4)
Washer, Flat 5/16 (4)
Washer, Lock 5/16 (4)
Washer, flat 3/8 (4) Washer,
lock 3/8 (4)
1/2" Wrench
9/16" Hex Wrench (socket or open end style)
Dial Indicator
The optional foot mounting bracket kit is Avtron part number
A22232 (A25448 for BC46 replacement). Read all of the following
instructions and the Avtron PULSE GENERATOR HANDBOOK
prior to beginning any work.
The M4 performance and life will be directly affected by the
installation. Following this sequence of steps is recommended.
1) Disconnect power from equipment and encoder cable.
2) The foot mount­ing bracket must be secured to a flat, rigid,
vibra­tion free steel or aluminum base which can be machined
to accept 5/16-18 mounting hardware. See next section.
3) Temporarily mount the M4 to the foot bracket, install the
coupling to the M4 and driver and verify that the location is
suitable for installation.
4) If the M4 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.
5) While maintaining alignment, precisely mark the position of the
foot bracket on its mounting base.
6) Remove the M4. Transfer punch or layout the mounting hole
pattern as indicated on outline drawing.
7) Machine four, 3/8" dia. through holes or tap four, 5/16-18 holes
in center of base slots to give some degree of freedom in final
alignment.
8) Reinstall the M4 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 M4 to foot bracket.
9) 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.
10)Recheck alignment and tighten all hardware after first several
hours of operation.
A. Operating Power (Vin)
1.Volts............................. See Line Driver Options
2.Current........................ 120mA, no load
B. Output Format
1.1O/................................ Connector Options H & J
2.2O/ (A & B).................... Connector Options E & F
3.2O/ & Comp................... Connector Options A,B,C,M,L,K,V,P,
–
–
(A,A , B,B ).................... N,T,W,X,& Z (differential line driver)
4.Marker......................... 1/Rev
C. Signal Type...................... Incremental, Square Wave, 50 ±10%
.................................... Duty Cycle
D. Direction Sensing............ O/ A leads O/ B for CW rotation as viewed
.................................... from the back of the tach looking at the
.................................... non-drive end of the motor.
E. Transition Sep.................. 15% minimum
F. Frequency Range............ 0 to 150,000 Hz.
G.PPR................................. 240, 256, 300, 480, 512, 600, 960,
.................................... 1024, 1200
The M4 is shipped standard with a breather/drain in the bottom.
The breather is to equalize pressure if the tach is exposed to
temperature variations. The drain allows condensation an escape
path from the encoder. The breather/ drain must be located at
the lowest point of the encoder and have a clear, unrestricted
drainage path. If for any reason the breather/drain cannot be
located at the lowest point (Example verticle mounting) or have
a clear, unrestricted drainage path it must be replaced with a 1/8
NPT pipe plug and the M4 operated as a sealed tach.
CAUTION
Be sure to ground the cable shield: It can be
connected to case ground at the encoder, or
grounded at the receiving device, but should not be
grounded on both ends.
For bidirectional operation of the encoder, proper phasing of the
two output channels is important. Phase A channel leads phase B
channel for clockwise shaft rotation as viewed from the anti-drive
or accessory end of the motor (M4 mounting end).
WIRING DIAGRAMS
DIFFERENTIAL TWO PHASE WIRING APPLICATIONS
(USE CONNECTOR OPTION “L” FOR M738 AND M785 REPLACEMENTS
AND CONNECTOR OPTION “G” FOR K927B REPLACEMENT)
SIGNAL CODING TABLE
LINE DRIVER OPTIONS
A
B
D
G
E
H
C
I
Output Options
3
4
5-18 VDC
18-24 VDC
5-24 VDC
Output High
(Volts)
(Vin) -2 (typ)
(Vin) -1 (typ)
330 ohm
pull up
5 VDC
Output High
(milliamps)
80 (max.)
80 (avg.),
1500 (peak)
330 ohm
pull up
80 (max.)
Output Low (Volts)
0.5 (typ)
0.5 (typ)
1 (max.)
0.5 (typ)
80 (max.)
80 (avg.),
1500 (peak)
50 (avg.)
80 (max.)
Output Low
(milliamps)
Protection
H. See Line Driver Options
MECHANICAL
A. Shaft Inertia..................... 0.1 oz. In.2 (Typ).
B. Acceleration..................... 5,000 RPM/Sec.
C. Starting Torque................ 2.0 oz. In. (Typ).
D. Speed.............................. 5,000 RPM
E. Weight............................. 7 lbs (3.2kg).
F. Coupling Required: Thomas Miniature Flex. or Equivalent
OPTION
OPTION
"A" "B" "C" "P" "V"
"K" "L" "M" "X" & "Z"
BLACK
RED
GREEN
YELLOW
BLUE
GRAY
ORANGE
WHITE
*-40°C optional
5-24 VDC
Maximum Cable
Drive(Feet)
OUTPUT
BOX
RED
BLUE
1000 ft.
OPTION
"R" & "S"
OPTION
"G"
1
2
3
4
5
6
7
8
F
D
A
H
B
J
C
K
G
A
B
D
C
E
not used
not used
1
6
2
7
3
8
4
9
(USE CONNECTOR OPTIONS “E” & “F” FOR
M737A REPLACEMENTS)
B
SEE LINE DRIVER OPTIONS
C
ØB
BLACK
E
ØA
A
COMMON
OPTION
"A" "B" "C"
"K" "L" "M"
With Mod.
030
REF
SIGNAL
F
D
A
H
B
I
C
J
COM
+V SEE LINE
ØA DRIVER OPTIONS
–
ØA
ØB
–
ØB
Z
– = MARKER
Z
SINGLE ENDED SINGLE PHASE WIRING APPLICATIONS
GROUND
GREEN
2000 ft.
OPTION
"T"
SINGLE ENDED TWO PHASE WIRING APPLICATIONS
Reverse Voltage, Reverse Voltage,
Reverse Voltage,
Reverse Voltage,
Transient,
Transient,
Transient,
Transient,
Short Circuit (high
Short Circuit
Short Circuit (high
Short Circuit (low)
& low)
(none)
& low)
1000 ft. @ 5 V
500 ft. @ 12 V
200 ft. @ 24 V
NOTE
When using the industrial connector (“G”, “P”,
“V”, “X”, or “Z” options), the minimum wire size
is 20 gage, and 20 gage (only) wire ends must
be tinned with solder before connection at the
screw terminals.
The M4 can be wired for single phase, two-phase, either with or
without complements, with or without markers. See connector
options and wiring diagrams on the following page.
A. Enclosure Rating............. Sealed against dust and water ingress.
B. Operating Temp............... -20* to 85°C
Voltage Input (Vin)
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 (Industrial EPIC Connector options can use 14 AWG),
each wire pair individually shielded with braid or foil with drain
wire, 0.05 uF maximum total mutual or direct capacitance, outer
sheath insulator, 1,000 ft. max. See Wire Selection Chart for some
suggested cables.
Be sure to remove power before wiring the encoder.
ENVIRONMENTAL
2
Interconnecting cables specified in the wire selection chart are
based on typical applications. Refer to the system drawing for
specific cable requirements where applicable.
WIRING INSTRUCTIONS
OPTION
"W" &"N"
1
1) Remove Power.
2) Exchange wires on cable, either at encoder cable end, or at
speed controller end (but not both).
a) Single Ended 2 Phase Wiring (see wiring diagram)
Exchange A and B at the use end of the wires.
b) Differential 2 Phase Wiring (see wiring diagram)
–
–
Exchange either A with A in the phase A pair OR B with B
in the phase B pair but NOT both.
3) Apply Power.
4) Verify encoder feedback is correct, using hand rotation of
shaft, or jog mode of the speed controller.
BREATHER/DRAIN CONSIDERATIONS
SPECIFICATIONS
ELECTRICAL
CORRECTIVE ACTION FOR PHASE REVERSAL
MINIMIZE DOWNTIME: Should M4 replacement be required,
leave the foot mounting bracket installed on its base and mount
the new M4 to the bracket. This maintains the original alignment.
Not Supplied:
OUTPUT
BOX
(USE CONNECTOR OPTIONS “H” & “J” FOR
M727A REPLACEMENTS)
COMMON
RED
SEE LINE
DRIVER OPTIONS
GREEN
SIGNAL
BLACK
CABLE BELDEN 8723
OR EQUIVALENT
1000 ft. @ 5 V
GROUND
CABLE BELDEN 8771
OR EQUIVALENT
TYPICAL WIRE SELECTION CHART
for 18 AWG, multiple pair, individually shielded
BELDEN
Foot Mount Kits
A22232 - Standard Foot Mount
A25448 - BC42/46 Foot Mount
NOTES:
Marker output for connector options “E” & “F” - Pin “D”
Marker output for connector options “H” & “J” - Pin “C”
Avtron standard warranty applies. Copies available upon request.
Specifications subject to change without notice.
ALPHA
2 PAIR
9368
6062C
3 PAIR
9369
6063C
4 PAIR
9388
6064C
6 PAIR
9389
6066C
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 when positioning coupling.
For more details on alignment specifications, measurement tech­
niques, and special considerations in specifying and installing
drive components, refer to separate installation in­struc­tions in the
Avtron PULSE GENERATOR HANDBOOK.
NEMA 56C FACE MOUNTING INSTRUCTIONS
1) Disconnect power from equipment and encoder cable.
2) Apply anti-seize compound to inner circumference of coupling
(both motor and encoder side).
3) Loosen set screws in coupling and apply thread locker to set
screws.
4) Place coupling on motor shaft, inserting to depth per
manufacturer’s instructions.
5) Attach coupling to motor shaft using set screws per
manufacturer’s instructions.
6) Bolt mounting flange (flowerpot) to motor C-Face, using thread
locker with fasteners.
7) Slide encoder shaft into other side of coupling. DO NOT
FORCE. Ensure 1/4" keyway aligns with coupling set screw
location.
8) Ensure C-Face on mounting flange matches and aligns with
encoder C-Face precisely.
9) Apply thread locker to hex cap screws.
10)Align bolt holes of encoder and flange, thread in (4) hex cap
screws, using lock washers.
11)Tighten set screws on encoder side of coupling.
FOOT MOUNTING INSTRUCTIONS
Equipment needed for installation
Supplied:
1. Foot Bracket (A22232/A25448) 4.
2. Hex Head Bolt 5.
3/8-16 x .75 (4)
6.
3. Hex Head Bolt 7.
5/16-18 x 1.50 (4)
Nut, Hex 5/16-18 (4)
Washer, Flat 5/16 (4)
Washer, Lock 5/16 (4)
Washer, flat 3/8 (4) Washer,
lock 3/8 (4)
1/2" Wrench
9/16" Hex Wrench (socket or open end style)
Dial Indicator
The optional foot mounting bracket kit is Avtron part number
A22232 (A25448 for BC46 replacement). Read all of the following
instructions and the Avtron PULSE GENERATOR HANDBOOK
prior to beginning any work.
The M4 performance and life will be directly affected by the
installation. Following this sequence of steps is recommended.
1) Disconnect power from equipment and encoder cable.
2) The foot mount­ing bracket must be secured to a flat, rigid,
vibra­tion free steel or aluminum base which can be machined
to accept 5/16-18 mounting hardware. See next section.
3) Temporarily mount the M4 to the foot bracket, install the
coupling to the M4 and driver and verify that the location is
suitable for installation.
4) If the M4 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.
5) While maintaining alignment, precisely mark the position of the
foot bracket on its mounting base.
6) Remove the M4. Transfer punch or layout the mounting hole
pattern as indicated on outline drawing.
7) Machine four, 3/8" dia. through holes or tap four, 5/16-18 holes
in center of base slots to give some degree of freedom in final
alignment.
8) Reinstall the M4 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 M4 to foot bracket.
9) 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.
10)Recheck alignment and tighten all hardware after first several
hours of operation.
A. Operating Power (Vin)
1.Volts............................. See Line Driver Options
2.Current........................ 120mA, no load
B. Output Format
1.1O/................................ Connector Options H & J
2.2O/ (A & B).................... Connector Options E & F
3.2O/ & Comp................... Connector Options A,B,C,M,L,K,V,P,
–
–
(A,A , B,B ).................... N,T,W,X,& Z (differential line driver)
4.Marker......................... 1/Rev
C. Signal Type...................... Incremental, Square Wave, 50 ±10%
.................................... Duty Cycle
D. Direction Sensing............ O/ A leads O/ B for CW rotation as viewed
.................................... from the back of the tach looking at the
.................................... non-drive end of the motor.
E. Transition Sep.................. 15% minimum
F. Frequency Range............ 0 to 150,000 Hz.
G.PPR................................. 240, 256, 300, 480, 512, 600, 960,
.................................... 1024, 1200
The M4 is shipped standard with a breather/drain in the bottom.
The breather is to equalize pressure if the tach is exposed to
temperature variations. The drain allows condensation an escape
path from the encoder. The breather/ drain must be located at
the lowest point of the encoder and have a clear, unrestricted
drainage path. If for any reason the breather/drain cannot be
located at the lowest point (Example verticle mounting) or have
a clear, unrestricted drainage path it must be replaced with a 1/8
NPT pipe plug and the M4 operated as a sealed tach.
CAUTION
Be sure to ground the cable shield: It can be
connected to case ground at the encoder, or
grounded at the receiving device, but should not be
grounded on both ends.
For bidirectional operation of the encoder, proper phasing of the
two output channels is important. Phase A channel leads phase B
channel for clockwise shaft rotation as viewed from the anti-drive
or accessory end of the motor (M4 mounting end).
WIRING DIAGRAMS
DIFFERENTIAL TWO PHASE WIRING APPLICATIONS
(USE CONNECTOR OPTION “L” FOR M738 AND M785 REPLACEMENTS
AND CONNECTOR OPTION “G” FOR K927B REPLACEMENT)
SIGNAL CODING TABLE
LINE DRIVER OPTIONS
A
B
D
G
E
H
C
I
Output Options
3
4
5-18 VDC
18-24 VDC
5-24 VDC
Output High
(Volts)
(Vin) -2 (typ)
(Vin) -1 (typ)
330 ohm
pull up
5 VDC
Output High
(milliamps)
80 (max.)
80 (avg.),
1500 (peak)
330 ohm
pull up
80 (max.)
Output Low (Volts)
0.5 (typ)
0.5 (typ)
1 (max.)
0.5 (typ)
80 (max.)
80 (avg.),
1500 (peak)
50 (avg.)
80 (max.)
Output Low
(milliamps)
Protection
H. See Line Driver Options
MECHANICAL
A. Shaft Inertia..................... 0.1 oz. In.2 (Typ).
B. Acceleration..................... 5,000 RPM/Sec.
C. Starting Torque................ 2.0 oz. In. (Typ).
D. Speed.............................. 5,000 RPM
E. Weight............................. 7 lbs (3.2kg).
F. Coupling Required: Thomas Miniature Flex. or Equivalent
OPTION
OPTION
"A" "B" "C" "P" "V"
"K" "L" "M" "X" & "Z"
BLACK
RED
GREEN
YELLOW
BLUE
GRAY
ORANGE
WHITE
*-40°C optional
5-24 VDC
Maximum Cable
Drive(Feet)
OUTPUT
BOX
RED
BLUE
1000 ft.
OPTION
"R" & "S"
OPTION
"G"
1
2
3
4
5
6
7
8
F
D
A
H
B
J
C
K
G
A
B
D
C
E
not used
not used
1
6
2
7
3
8
4
9
(USE CONNECTOR OPTIONS “E” & “F” FOR
M737A REPLACEMENTS)
B
SEE LINE DRIVER OPTIONS
C
ØB
BLACK
E
ØA
A
COMMON
OPTION
"A" "B" "C"
"K" "L" "M"
With Mod.
030
REF
SIGNAL
F
D
A
H
B
I
C
J
COM
+V SEE LINE
ØA DRIVER OPTIONS
–
ØA
ØB
–
ØB
Z
– = MARKER
Z
SINGLE ENDED SINGLE PHASE WIRING APPLICATIONS
GROUND
GREEN
2000 ft.
OPTION
"T"
SINGLE ENDED TWO PHASE WIRING APPLICATIONS
Reverse Voltage, Reverse Voltage,
Reverse Voltage,
Reverse Voltage,
Transient,
Transient,
Transient,
Transient,
Short Circuit (high
Short Circuit
Short Circuit (high
Short Circuit (low)
& low)
(none)
& low)
1000 ft. @ 5 V
500 ft. @ 12 V
200 ft. @ 24 V
NOTE
When using the industrial connector (“G”, “P”,
“V”, “X”, or “Z” options), the minimum wire size
is 20 gage, and 20 gage (only) wire ends must
be tinned with solder before connection at the
screw terminals.
The M4 can be wired for single phase, two-phase, either with or
without complements, with or without markers. See connector
options and wiring diagrams on the following page.
A. Enclosure Rating............. Sealed against dust and water ingress.
B. Operating Temp............... -20* to 85°C
Voltage Input (Vin)
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 (Industrial EPIC Connector options can use 14 AWG),
each wire pair individually shielded with braid or foil with drain
wire, 0.05 uF maximum total mutual or direct capacitance, outer
sheath insulator, 1,000 ft. max. See Wire Selection Chart for some
suggested cables.
Be sure to remove power before wiring the encoder.
ENVIRONMENTAL
2
Interconnecting cables specified in the wire selection chart are
based on typical applications. Refer to the system drawing for
specific cable requirements where applicable.
WIRING INSTRUCTIONS
OPTION
"W" &"N"
1
1) Remove Power.
2) Exchange wires on cable, either at encoder cable end, or at
speed controller end (but not both).
a) Single Ended 2 Phase Wiring (see wiring diagram)
Exchange A and B at the use end of the wires.
b) Differential 2 Phase Wiring (see wiring diagram)
–
–
Exchange either A with A in the phase A pair OR B with B
in the phase B pair but NOT both.
3) Apply Power.
4) Verify encoder feedback is correct, using hand rotation of
shaft, or jog mode of the speed controller.
BREATHER/DRAIN CONSIDERATIONS
SPECIFICATIONS
ELECTRICAL
CORRECTIVE ACTION FOR PHASE REVERSAL
MINIMIZE DOWNTIME: Should M4 replacement be required,
leave the foot mounting bracket installed on its base and mount
the new M4 to the bracket. This maintains the original alignment.
Not Supplied:
OUTPUT
BOX
(USE CONNECTOR OPTIONS “H” & “J” FOR
M727A REPLACEMENTS)
COMMON
RED
SEE LINE
DRIVER OPTIONS
GREEN
SIGNAL
BLACK
CABLE BELDEN 8723
OR EQUIVALENT
1000 ft. @ 5 V
GROUND
CABLE BELDEN 8771
OR EQUIVALENT
TYPICAL WIRE SELECTION CHART
for 18 AWG, multiple pair, individually shielded
BELDEN
Foot Mount Kits
A22232 - Standard Foot Mount
A25448 - BC42/46 Foot Mount
NOTES:
Marker output for connector options “E” & “F” - Pin “D”
Marker output for connector options “H” & “J” - Pin “C”
Avtron standard warranty applies. Copies available upon request.
Specifications subject to change without notice.
ALPHA
2 PAIR
9368
6062C
3 PAIR
9369
6063C
4 PAIR
9388
6064C
6 PAIR
9389
6066C
OUTLINE DRAWING
5.36 (136.14) OPTION 1
5.80 (147.32) OPTION 2
DIM
AA
1.63 (41.40)
3/16 (4.763) SQ KEY
(FURNISHED)
0.50 (12.70)
1/2–14 NPT
1.574
(40.00) 1.968 (50.00)
4.19
(106.43)
0.177 (4.50) DIA. – 4 HOLES
OPTION “X” – SURFACE MOUNTED INDUSTRIAL CONNECTOR
OPTION “Z” – CONNECTOR W/ MATING PLUG
4.500
4.497
DIA
(114.300)
(114.224)
DIA
2.24
(56.90)
AA
2.06 (52.33)
2.64 (67.06)
SHAFT OPTION 2 IS FOR USE
WITH OPTIONAL FOOT BRACKET
SHOWN BELOW
0.12
(3.05)
1.890
(48.00) 2.50 (63.50)
0.16 (4.06)
SHAFT
OPTION
1
2
4.10 (104.14) OPT 1
3.56 (90.43)
4.54 (115.32) OPT 2
PLUG FACE
OPTION “A”
DIA
ZZ
DIA
OPTION “A”
MS BOX CONNECTOR ONLY
OPTION “C”
CONNECTOR W/ MATING PLUG
OPTION “R”
BREATHER PROVIDED MS3112E12-10P BOX
AS STANDARD ON
CONNECTOR ONLY
BOTTOM OF UNIT
3.78
(96.00)
0.91
(23.12)
5.03 (127.76)
OPTIONS “M”, “E”, & “H”
MS CONNECTOR ONLY
OPTIONS “L”, “F”, & “J”
CONNECTOR W/ MATING PLUG
2.12
(53.85)
OPTION
E&H
F, J, & K
M
L
45°
YY
ZZ
3.34 (84.84)
5.62 (142.75)
2.75 (69.85)
5.44 (138.18)
6.88
(174.75)
36.00
(914.40)
MIN.
OPTIONAL
FOOT BRACKET
INCLUDES ALL HARDWARE NECESSARY
FOR MOUNTING PULSE GENERATOR AND
FOOT BRACKET TO MACHINE BASE.
FOR USE WITH SHAFT OPTION 2.
DIMENSION
W/O PLUG - OVER
DUST COVER
0.73
(18.54)
3.62
(92.08)
7.25
(184.15)
1/2–14 NPT
OPTION “S”
MS3112E12-10P
CONNECTOR
3/8–16 UNC–2B THREAD
4 HOLES EQUALLY SPACED
ON A 5.875 (149.225) DIA. B.C.
SEE NOTE 3
OPTION “V”
INDUSTRIAL CONNECTOR
OPTION “P”
CONNECTOR W/ MATING PLUG
OPTION “W”
SEALED FLEX CABLE
0.48
(12.26)
2.65
(67.43)
REF
FOOT MOUNT BRACKET P/N A22232
SHAFT
BB
CC
OPTION
1
1.48 (37.59) 3.00 (76.20)
2
2.06 (52.33) 3.58 (90.93)
0.33 x 0.77 SLOT
(8.38 x 19.56)
5.31
(134.87)
4 PLACES
0.23
(5.84)
2.24 (56.90)
0.58
(14.73)
REF
M4 ENCODER
0.94
(23.88)
3.00
(76.20)
OPTION “B”
1/2" FLEXIBLE METAL
WATERPROOF CONDUIT/
MS CONNECTOR
0.41
(10.41)
3.50
(88.90)
36.00
(914.40)
Ø 2.00
(Ø 50.80)
P/N A22232
CC
Ø 0.6250 REF
(Ø 15.875)
0.33 x 1.15 SLOT
(8.38 x 29.21)
4 PLACES
FOOT MOUNT BRACKET P/N A25448
SHAFT
BB
CC
OPTION
1
1.48 (37.59) 4.78 (121.41)
2
2.06 (52.33) 5.36 (136.14)
4 – DIMENSIONS IN PARENTHESIS ARE MILLIMETERS.
3 – PILOT MOUNTING CONFORMS TO A NEMA 56C FACE.
2 – ALL DIMENSIONS ARE APPROX.
1 – WEIGHT: 7 LBS.
NOTES:
5.02
(127.50)
0.39
(9.94)
2.51
(63.75)
REF
3.00 (76.20)
2.72
(69.09)
CC
Ø 0.6250 REF
(Ø 15.875)
5/8" SOLID SHAFT
CAUTION
7.10 (180.34)
3.63
(92.20)
3.29
(83.57)
Replaced by Model AV485
RETURN TO FACTORY FOR REPAIR
WARRANTY VOID IF OPENED
YY
OPTIONS “N” & “T”
Conduit box w/1/2–14 NPT
Inactive Design
T E L E P H O N E : ( 1 ) 2 1 6 - 6 4 2 - 1 2 3 0 • FA X : ( 1 ) 2 1 6 - 6 4 2 - 6 0 3 7
E - M A I L : t a c h s @ a v t r o n . c o m • W E B : w w w. a v t r o n e n c o d e r s . c o m
DIA
0.6250
0.6245
(15.8750)
(15.8623)
M4-1 and M4-2
8 9 0 1 E . P L E A S A N T VA L L E Y R O A D
INDEPENDENCE, OHIO 44131-5508
CLEVELAND, OHIO
PLUG FACE
OPTION “K”
1/2" FLEXIBLE METAL
WATERPROOF CONDUIT/
MS CONNECTOR
COVER PLATE
SINGLE OUTPUT
INDUSTRIAL AUTOMATION, INC.
2.12
(53.85)
6.50
(165.10)
Encoder
Instructions
6.45 (163.83) OPTION “B”
6.25 (158.75) OPTION “C”
BB
0.68
(17.27)
5.00
(127.00)
BREATHER
VENT
2.24 (56.90)
0.58
(14.73)
REF
AVAILABLE RESOLUTIONS
The Avtron Model M4-1 and M4-2 Solid Shaft Encoders are heavy
duty speed and position incremental trans­ducers (also known as
tachometers or rotary pulse generators). When coupled to a motor
or machine, their output is directly pro­portional to shaft position
(pulse count) or speed (pulse rate). The M4 operates down to
zero speed and can be used for both control and instrumentation
applications.
LOW
240
256
300
MEDIUM
480
512
600
HIGH
960
1024
1200
1. M4 Encoder
2. Anti-Seize Compound (copper)
Not Supplied for NEMA 56C Face Mounting:
Hex Head Bolt
3/8-16 x 1.00 (8)
Washer, Flat 3/8 (8)
Washer, Lock 3/8 (8)
Various bolts, wrenches,
flats and lock washers for
motor side of flange adapter.
Thread Locker (Loctite
242 recommended)
These outputs are available as single phase; two-phase (A,B)
––
90° apart for direction sensing; with complements (A,B ), (A
–
Quad B Output) and with marker pulse (Z,Z ). Output resolution is
determined by the rotor’s base PPR (pulses per revolution), times
a sensor multiplier. The sensor module can provide: 1/2 the base
PPR, the base PPR, or double the base PPR (see table). With
two outputs, the same encoder can provide two different PPRs
from a given rotor at the same time. Only one rotor per encoder
is possible.
9/16" Hex Wrench Socket
or open end style
Shaft Coupling
Motor Adapter Flange
Dial Indicator
Optional:
Foot Bracket Mounting Kit (A22232/A25448)
(see foot mounting instructions for additional hardware required)
DRIVE INSTALLATION INSTRUCTIONS
Do not use a timing belt, pulley, chain, or sprocket to drive M4s.
Use a flexible disc coupling and align the shafts as accurately as
possible. EXAMPLE: For a size 62 Thomas Miniature Coupling
angular mis­align­ment must be less than 1.34°, parallel misalignment
less than 0.028", and axial float less than ±0.031". Overhung loads
should also be minimized. If a rubber slinger disc is used, position
it on the shaft so it will rotate freely.
Example: an M4 could use a 1024 PPR sensor output on one
side for feedback to a drive system, and simultaneously use a 256
PPR sensor on the other side for a process computer.
M4 PART NUMBERS AND AVAILABLE OPTIONS
-60 OPTION
Supplied:
All M4s can be equipped with one or two outputs. Each output is
electrically independent and totally isolated.
P/N A25448
-51 OPTION
Equipment needed for installation
The enclosures on all Model M4s help protect the internal
components from the entry of dust and liquids. This, along with
the fact that the M4 uses magnetoresistive sensing technology,
makes the M4 ideal for demanding industries like paper, metals,
and chemical processing.
Refer to separate instructions for additional information on the
shaft grounding option.
-48 OPTION
INSTALLATION
Mechanically, the M4-1 mounts on a NEMA 56C adapter flange.
The M4-2 can be foot mounted by using an optional foot mounting
bracket kit P/N A22232 or P/N A25448.
M4 ENCODER
Ø 2.00
(Ø 50.80)
BREATHER
VENT
DESCRIPTION
0.68
(17.27)
BB
6.69
(169.88)
Model
EU DECLARATION OF CONFORMITY The Model M4 Encoder has been assessed and type tested against the following Harmonized European
Standards: EN 50081-1:1992, EN 50082-1:1998. The Model M4 has been found to be compliant with the requirements of EU Directive 89/336/
EEC provided that the following conditions are met: The electrical supply to the M4 must be within specified limits. The electrical supply must offer
suitable protection from voltage surges unless the application does not require such protection. On behalf of Avtron Industrial Automation, Inc.:
Stephen L D’Henin, Certification Manager, Epsilon Certification Service.
M4-
Mounting
Style
0- Non-Standard
1- Face Mount
5/8" x 2" shaft
2- Foot Mount
5/8" x 2.64"
(2" net) shaft
Shaft Style Line Driver
S- Single
1- 5 to 24 VDC
Ended Shaft 2- 5 to 18 VDC
G-Shaft Ground 3- 18 to 24 VDC
4- 5 to 24 V in,
5 V fixed out
Left & Right
Output Range
X- None
L- Low Range
(Base PPR x 1/2)
M-Medium Range
(Base PPR x 1)
H-High Range
(Base PPR x 2)
10 Pin Connector
REV. 03-02-09
Z- Marker
– -None
A- without Plugs
K-with Flex. Conduit
B- with Flex. Adapterb
Conduit Adapters L-elbow with Plugb
C- with Plugs
M-without Plugb
G-K927B replacement with Plugs
s
5 Pin MS Connector
MS mini
EPIC
R- Baldor
Twist Lock
without Plug
S- Baldor on
3 ft. Pigtail
P- with Plug
V- without Plug
MS
8901 E. PLEASANT VALLEY RD., INDEPENDENCE, OH 44131, U.S.A. • (1) 216-642-1230 • FAX (1) 216-642-6037 • www.avtronencoders.com
48- 480
51- 512
60- 600
Marker Connector
Modifications
000005009030-
None
-40° C Rating
Northstar pinout (mini-Epic)
Dynapar Pinout (MS)
Connector
Features and specifications subject to change without notice.
Avtron standard warranty applies. All dimensions are in inches (mm) approx.
INDUSTRIAL AUTOMATION, INC.
Base
PPR
side exit
b
bottom exit
M737A replacement
E- without Plugs
F- with Plugs
M727A replacement
H- without Plugs
J- with Plugs
Conduit Box
3 ft. Flex. Cable
N- with color coded
leads
T- with Terminal
Block
W-Sealed, Pigtail
X- Sealed, Industrial
Connector without
Plug
Z- Sealed, Industrial
Connector with Plug
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