M6 ENVIRONMENT
The M6 does not produce flammable gasses or dusts in normal
operating modes. The M6 does not cause injury or harm when
used in conjunction with the installation guide. The M6 does not
produce ignition capable electrical sparks or arcs and has been
designed not to produce potential ignition sources from electro-
magnetic, acoustic, optical or other energy sources. The M6 is not
considered as a safety device and is not suitable for connection
into a safety system.
The installer should refer to the latest edition of the following stan-
dards before installing or operating in a Hazardous Area:
EN 1127-1 Explosive Atmospheres - Explosion prevention and
protection, basic concepts, and methodology.
EN 60079-14 Electrical apparatus for explosive gas at mo-
spheres - Part 14: Electrical installations in hazardous areas
(other than mines).
The M6 housing and shaft materials are listed in the spe cifications.
These materials are not considered as able to trigger an explosion
in normal operating modes and various fault modes in accordance
with the requirements for Cat 2 equip ment. These materials are not
known to react with any explosive atmo spheres to which the M6
may be subject. It is however the responsibility of the end user to
ensure that the M6 is selected correctly for the potentially explo-
sive atmosphere in which the equipment is to be put into service.
INSTALLATION
Equipment needed for installation
Supplied:
1. M6 Encoder
2. Anti-Seize Compound (copper)
Not Supplied:
Socket Hd. Cap Screw
5/16" Hex Wrench (T-Handle style)
3/8-16 x 0.75 (4)
Shaft Coupling
Washer, Flat 5/16 (4)
Motor Adapter Flange
Washer, Lock 5/16 (4)
Dial Indicator
Thread Locker (Loctite 242 recommended)
Optional:
Foot Bracket Mounting Kit (A28380)
Armoured Cable Gland
Clean machine shaft of any dirt and check for any burrs or
damage.
EXTERNAL
GROUNDING LUG
INTERNAL
GROUNDING LUG
DIA
DIA
[15.8623]
[15.8750]
AA
DIA
3/16 (4.763) SQ KEY (FURNISHED)
DIA
3/4" NPT
3/8-16 UNC-2B THREAD
4 HOLES EQUALLY SPACED
ON A 5.875 [149.225] DIA B.C.
SEE NOTE 3
OPTIONAL
2nd OUTPUT
(REMOVE BLANKING ELEMENT
TO UTILIZE OPTIONAL 2nd OUTPUT)
OPTION “T”
TERMINAL BLOCK
2
2.64 [67.06]
SHAFT OPTION 2 IS FOR USE
WITH OPTIONAL FOOT BRACKET
SHOWN BELOW
2.06 [52.33]
AA
SHAFT
OPTION
1
DIM
7.19
[182.63]
DIA
0.6250
0.6245
3.77 [95.88]
0.12 [3.05]
4.500
4.497
[114.300]
[114.224]
5.32
[135.13]
7.25
[184.15]
0.33 [8.38]
2.00
[50.80]
114.427
114.350
4.28
[108.71]
Ø
0.15 [3.81]
2.51
[63.75]
0.82
[20.83]
5.02
[127.51]
[93.60 ]
+.0
-.76
+0.000
-0.030
0.58 [14.73]
7.25
[184.15]
3.62
[92.08]
7.06
[179.32]
Ø2.00
[50.80]
4.505
4.502
3.685
5.44 [138.23]
6.44 [163.63]
4.40 [111.76]
45
∞
OPTION “W”
TERMINAL BLOCK
WITH ARMOURED CABLE GLAND
OPTIONAL FOOT BRACKET
INCLUDES ALL HARDWARE NECESSARY
FOR MOUNTING PULSE GENERATOR AND
FOOT BRACKET TO MACHINE BASE.
FOR USE WITH SHAFT OPTION 2
NOTE: CABLE GLAND Tamb (-60
∞
C to +80
∞
C)
MUST BE DERATED FOR
TEMPERATURE RISE IN ENCODER.
DESCRIPTION
The Avtron Model M6-1 and M6-2 are Solid Shaft Incremental
Encoders (also known as tachometers or rotary pulse generators).
They are similar to the model M4 Heavy Mill Duty rotary solid
shaft incremental encoder but utilize flameproof and increased
safety construction. The M6 compliance with the Essential Health
and Safety Requirements has been assured by compliance with
EN60079-0, EN60079-1 and EN60079-7 (Certificate of Conformity
No. DEMKO 02 ATEX 131477X) The M6 is certified for use in CAT
2 (Zone 1) Gas Group IIC potentially explosive atmospheres when
marked with the code II 2G Ex de IIC T4 (Tamb -20°C to +80°C).
Tamb -40°C also available (Special modification 001).
Mechanically, the M6-1 mounts on a NEMA 56C adapter flange.
The M6-2 can be foot mounted by using an optional foot mounting
bracket kit. When coupled to a motor or machine, the M6 output is
directly proportional to shaft position (pulse count) or speed (pulse
rate). The M6 can be used for both control and instrumentation
applications.
The enclosures on all Model M6s are rated IP 66 to protect the
internal components from the entry of dust and liquids. The M6
uses magnetoresistive sensing technology, making the M6 ideal
for demanding industrial environments.
All M6s can be equipped with one or two outputs. Each output is
electrically independent and totally isolated.
The outputs can be wired as single ended single phase,
single ended two phase (A,B), or differential (A Quad B).
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.
Example: an M6 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.
8901 E. PLEASANT VALLEY RD., INDEPENDENCE, OH 44131, U.S.A. • (216) 642-1230 • FAX (216) 642-6037 • www.avtronencoders.com
INDUSTRIAL AUTOMATION, INC.
5 – IDENTIFICATION LABEL: SEE ABOVE
4 – DIMENSIONS IN PARENTHESIS ARE MILLIMETERS
3 – PILOT MOUNTING CONFORMS TO A NEMA 56C FACE
2 – ALL DIMENSIONS ARE APPROX.
1 – WEIGHT: 16 LBS. MAX.
NOTES:
*
“VDC” to be “5-18” or “5-24” or “12-24”
8 9 0 1 E . P L E A S A N T VA L L E Y R O A D
I N D E P E N D E N C E , O H I O 4 4 1 3 1 - 5 5 0 8
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
INDUSTRIAL AUTOMATION, INC.
REV: 11-09-10
0539
II 2G
Ex
CE 0539
DEMKO 02 ATEX 131477X
B31661
PULSE GENERATOR
Date Mfg
VDC
Rev
PPR
Type
Option Code
Ex de IIC T4 (Tamb to +80˚C)
Ser.No.
Imax= 160mA, Pmax= 4.48W Ea Output
IP66
Cert No.
ATMOSPHERE OR WHEN ENERGIZED
WARNING: DO NOT OPEN IN A FLAMMABLE
2.81
2.75
OUTLINE DRAWING
These instructions have been reviewed and the product evaluated as suitable for our application.
Company Name
Authorized Company Representative
Title
Date
EU DECLARATION OF CONFORMITY: The Model M6 Encoder has been assessed and type tested against the following Harmonized
European Standards: EN 50081-1:1992, EN 50082-1:1998. The Model M6 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 M6 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:
Stephen L D’Henin, Certification Manager, Epsilon Certification Service.
AVAILABLE RESOLUTIONS
-48 OPTION -51 OPTION -60 OPTION
LOW
240
256
300
MEDIUM
480
512
600
HIGH
960
1024
1200
M6 PART NUMBERS AND AVAILABLE OPTIONS
Model
Mounting
Style
Shaft Style
Line Driver
Left & Right
Output Range
Base
PPR
Marker
Connector
Modifications
M6-
0- Non-Standard
1- Face mount
5/8" x 2" shaft
2- Foot mount
5/8" x 2.64"
(2" net) shaft
S- Single
Ended Shaft
1- 5 to 24 VDC
2- 5 to 18 VDC
3- 12 to 24 VDC*
X- None
L- Low Range
(Base PPR x 1/2)
M- Medium Range
(Base PPR x 1)
H- High Range
(Base PPR x 2)
48- 480
51- 512
60- 600
Z- Marker
– - None
T- Conduit Box,
Terminal Block,
3/4" NPT
W- Conduit Box,
Terminal Block
and Wire Gland
000- None
001- Low Temp (-40°C)
There are no field replaceable parts in an M6. The unit should be
returned to the factory for all repairs.
Build up of large amounts of contamination are to be avoided,
therefore periodic cleaning is recommended.
The condition of the bearings is important to the safety of the
explosion-proof housing. The bearing manufacturer’s rated life
(see specifications) can be adversely affected by application
specific conditions. If the unit shows signs of bearing wear
indicated by noise or degradation of the electrical signal output, it
should be returned to the factory for repair.
Features and specifications subject to change without notice.
Avtron standard warranty applies. All dimensions are in inches (mm) approx.
Tamb -20°C to +80°C standard, optional Tamb -40°C to +80°C available with
special option codes 001.
* Units shipped prior to 2009 were rated 18 to 24 volts. Refer to ID tag on the encoder for specific input voltage requirements.
Encoder
Instructions
M6-1 and M6-2
EXPLOSION PROTECTED, SOLID SHAFT
Inactive Design
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