Magnetic linear encoders TMLS

www.droab.se
TMLS magnetic linear encoders
Magnetic linear encoders
TMLS
Supplier:
Bength Inge Paulsson
Älvgatan 6
252 30 Helsingborg
Tel.: 0705-210 331
www.droab.se
e-mail: Bength@droab.se
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TMLS magnetic linear encoders
Technical specification
Encoder model TMLS-25B
Encoder model TMLS-05A
Resolution: 0.025 mm
Output signal: TTL
Supply voltage: 5V
Max. meas. speed: 60 m / min.
Working temperature: 0 – 85 °C
Protection: IP67
Resolution: 0.005 mm
Output signal: TTL
Supply voltage: 5V
Max. meas. speed: 60 m / min.
Working temperature: 0 – 85 °C
Protection: IP67
Magnetic linear encoder connector description
Pin
1
2
3
4
Signal
0V
(shielding is connected to the connector body)
5
-
6
A
7
+5V
8
B
9
Z
7
+5V
8
B
9
Z
Magnetic linear encoder connector description for the RS-422
Pin
1
2
3
4
Signal
-Z
0V
-B
(shielding is connected to the connector body)
5
-A
TMLS-05A-02 magnetic linear encoder
6
A
TMLS-25B-02 magnetic linear encoder
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TMLS magnetic linear encoders
MT magnetic tape
Steel cover tape
Width:
10 mm
Thickness:
1.3 mm
Max. length: 50 m
Magnetic tape
Steel base tape
Aluminium protection profiles:
AP-01 – aluminium protection profile intended particularly for the TMLS-05A-05 encoders.
- The profile consists of a base profile and a cover profile. Both the profiles are joined together by
the screws M3x5 which are delivered with the profile. The base profile can be fastened by the
screws M4 with a special flat screwhead – the screws are delivered with the profile. A groove for
the magnetic tape is produced in the cover profile. This profile provides you with total protection
of the magnetic tape against ambient impurities like dust, cooling liquids, metal chips etc.
Holes for fastening the base profile by the
screws M4 – delivered with the profile
Cover
profile
Base profile
Gap for the
magnetic tape
Screws M3 enabling to join the base profile and
the cover profile - delivered with the profile
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TMLS magnetic linear encoders
AP-02 – aluminium protection profile intended particularly for the TMLS-05A-02, TMLS-01A-02,
TMLS-25B-02 encoders. The „L“ cover can be fastened to the profile
- The profile is produced by drawing to ensure homogenous dimensions along all the length. The
profile is surface treated. The „T“ groove situated in the upper part of the profile enables you to
fasten protection „L“ cover which protects the measuring components against coarse impurities.
The profile can be fastened by the screws M4 with a special flat screwhead – the screws are
delivered with the profile.
The profile should be mounted onto the machine at first. Then put the magnetic tape into the
groove over the fastening screws. After that insert a special stainless steel tape. It protects the
magnetic tape against all the ambient influences (cooling liquids, metal chips, dust etc.). The
stainless steel tape should be secured by sealing rubber inserted into the internal lateral grooves.
The stainless steel tape and the sealing rubber are delivered with the profile.
Before monting the „L“ cover, insert a flat nuts into the groove situated in the upper part of the
profile. Then fasten the cover by the screws (all the components are delivered with the profile).
Ending elements can be fastened to both the ends of the AP-02 profile and the „L“ cover.
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TMLS magnetic linear encoders
Mounting the encoder, magnetic tape, aluminium profiles
Positioning the encoder:





The TMLS encoder heads are fully water-tight and dust-tight.
If you intend to stick the MT magnetic tape on the machine, it should be perfectly protected
against cooling liquids (the cooling liquid can affect the adhesive layer and unstick the tape).
The AP aluminium profiles protect the tape against cooling liquids and unwanted damaging the
tape. However it is necessary to ensure protection against coarse impurities – when using the
AP-01 profile. Total protection can be also assured by the AP-02 profile with the „L“ cover.
Maximum air gap between the magnetic tape and the encoder head is 1 mm for the TMLS-25B02, TMLS-05A-02 and TMLS-01A-02 encoders and 2.5 mm for the TMLS-05A-05 encoders (to
ensure maximum accuracy it is recommended to adjust the air gap as small as possible. Air gap
between the aluminium profile and the encoder head should be in the range of 0.2 up to 1mm).
You should ensure the encoder head does not touch the aluminium profile.
Direct mounting the MT magnetic tape
If the aluminium profile not used, the MT magnetic tape should be glued on a carefully cleaned, grease
free surface. Then cover the magnetic tape with the stainless steel tape. You can mechanically ensure
both ends of the tape against unglue (eg. by screws). Be carefull not to obstruct free movement of the
head.
Mounting the magnetic tape protected by the AP aluminium profiles
Mounting the AP-01 profile
a. Choose a correct place for mounting.
b. Mark and drill holes with threads M4 on the surface according to the length of the profile.
c. Mount the base profile onto the surface, do not tighten the screws. Use a scale indicator to
adjust and check parallelity between the profile and movement of the machine.
d. Tighten the fastening screws.
e. Put the cover profile onto the base profile and fasten it by screws. Do not tighten the screws.
f. Insert the magnetic tape into the groove (the dark magnetic layer must point to the encoder
head) and tighten the screws of the cover profile.
g. It is recommended to spread a thin layer of silicone under both ends of the magnetic tape.
h. Mount the encoder head to ensure constant air gap between the upper surface of the aluminium
profile and the bottom surface of the encoder head. Max. nonparallelity between the head and
the profile is ±0.15mm, max. change of the air gap is ±0.1mm.
i. When mounting the encoder heads, we recommend to use the mounting holders of our
production.
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TMLS magnetic linear encoders
AP-01 aluminium profile
Cover profile
Mag.tape
Silicone
Base profile
Mounting the AP-02 profile
a. Choose a correct place for mounting.
b. Mark and drill holes with threads M4 on the surface according to the length of the profile
c. Mount the profile onto the surface, do not tighten the screws. Use a scale indicator to adjust and
check parallelity between the profile and movement of the machine.
d. Tighten the fastening screws.
e. Insert the stainless steel tape into the groove.
f. Insert the magnetic tape into the groove (the dark magnetic layer must point to the encoder
head) under the stainless steel tape. Eventually, you can glue the magnetic tape into the groove.
g. Insert the sealing rubbers into the internal lateral grooves – the sealing rubbers reliably fix the
stainless steel tape and the magnetic tape.
h. Mount the encoder head to ensure constant air gap between the upper surface of the stainless
steel tape and the bottom surface of the encoder head. Max. nonparallelity between the head
and the profile is ±0.15mm, max. change of the air gap is ±0.1mm.
i. When mounting the encoder heads, we recommend to use the mounting holders of our
production.
Mounting the ”L” cover
a. Insert nuts M3 into the T-groove of the profile.
b. Put the ”L” cover onto the profile.
c. Fasten the ”L” cover using the delivered screws M3
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TMLS magnetic linear encoders
Mounting the reference point
-
The reference point is represented by a magnet delivered with the encoder head. Mount the
magnet to generate a pulse when moving the encoder head along the magnet (distance between
the encoder head and the magnet should be 1-2 mm; the marked side of the magnet must point
to the encoder head). The magnet must be mounted on the marked side of the encoder head
(see the photo).
-
Activate the function of the reference point in the digital readout.
-
Always move to the reference point from the same direction.
Marked reference
point on the head
Encoder head
Magnetic tape or
aluminium profile
Reference
magnet
Encoder head with marked reference
point.
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