Read all the instructions in the manual carefully before use and strictly follow them.
Keep the manual for future references.
Lesen Sie die ganze Anleitung vor dem Betrieb aufmerksam durch und folgen Sie beim Betrieb des Geräts den
Anweisungen. Bewahren Sie diese Bedienungsanleitung zum späteren Nachlesen griffbereit auf.
THIS CLASS A DIGITAL DEVICE COMPLIES WITH
PART15 OF THE FCC RULES AND THE CANADIAN
ICES-003. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS.
(1) THIS DEVICE MAY NOT CAUSE HARMFUL
INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY
INTERFERENCE RECEIVED, INCLUDING
INTERFERENCE THAT MAY CAUSE
UNDERSIGNED OPERATION.
CET APPAREIL NUMÉRIQUE DE LA CLASSE A
EST CONFORME À LA NORME NMB-003 DU
CANADA.
When using Magnescale Co., Ltd. products, observe the following
general precautions along with those given specifically in this
manual to ensure proper use of the products.
• Before and during operations, be sure to check that our products
function properly.
• Provide adequate safety measures to prevent damage in case
our products should develop a malfunction.
• Use outside indicated specifications or purposes and
modification of our products will void any warranty of the
functions and performance as specified for our products.
• When using our products in combination with other equipment,
the functions and performance as noted in this manual may not
be attained, depending upon the operating environmental
conditions. Make a thorough study of the compatibility in
advance.
■ Precautions for use under the following
environments
1 When using water-miscible cutting fluid or when cutting metal or
non-metal (ceramic, glass fiber, etc.) objects.
• Mount the scale unit so that it is not directly exposed to
water-miscible cutting fluid or cutting scraps.
• Attach a scale cover to prevent water-miscible cutting fluid
mist or powder from entering the inside of the scale unit.
2 When mounted on a honing machine or other machine that
slides at high speed for long periods within a specific area.
• Regularly apply oil or spray lubricant (CRC•WD40, etc.).
If using in the environments in 1 or 2, be sure to always implement
the measures above. Quality cannot be guaranteed unless these
measures are implemented.
(E
) i
Safety Precautions
Magnescale Co., Ltd. products are designed in full consideration of safety. However, improper
handling during operation or installation is dangerous and may lead to fire, electric shock or other
accidents resulting in serious injury or death. In addition, these actions may also worsen machine
performance.
Therefore, be sure to observe the following safety precautions in order to prevent these types of
accidents, and to read these “Safety Precautions” before operating, installing, maintaining,
inspecting, repairing or otherwise working on this unit.
Warning indication meanings
The following indications are used throughout this manual, and their
contents should be understood before reading the text.
Warning
Failure to observe these precautions may lead to fire, electric shock
or other accidents resulting in serious injury or death.
Symbols requiring attention
CAUTIONELECTRICAL
SHOCK
Symbols prohibiting actions
Caution
Failure to observe these precautions may lead to electric shock or
other accidents resulting in injury or damage to surrounding objects.
DO NOT
DISASSEMBLE
Symbols specifying actions
Note
This indicates precautions which should be observed to ensure
ii
(E)
proper handling of the equipment.
UNPLUGGING
Warning
Caution
• Do not use this unit with voltages other than the specified supply voltage as this may
result in fire or electric shock.
• Do not perform installation work with wet hands as this may result in electric shock.
• Do not disassemble or modify the unit as this may result in injury or damage the
internal circuits.
• Be sure to check the machine and device conditions to ensure work safety before
working on the machine.
• Be sure to cut off the power supply, air and other sources of drive power before
working on the machine. Failure to do so may result in fire or accidents.
• When turning on the power supply, etc. to operate the machine, take care not to catch
your fingers in peripheral machines and devices.
(E
) iii
Handling Precautions
Installation precautions
When installing this unit, care should be given to the following points to prevent noise
and electromagnetic wave interference from other equipment.
1. Do not pass lead and connection cables through the same ducts as power lines.
2. Be sure to install the unit at least 0.5 m/19.6" or more away from high voltage or
large current sources or high-power relays.
3. Absolutely do not bring the unit near magnets or sources of electromagnetic waves.
Note
• Magnet chucks and other sources of magnetic force of approx. 6 × 10–2 [T] should
be kept at least 50 mm/19.6" or more away from the side surfaces and 10 mm/
0.39" or more away from the opening surfaces of the steel chassis on the scale
unit.
• If the unit must be installed close to sources of magnetic force, be sure to
4. Be sure to ground the scale part and the slider part to prevent trouble to noise.
iv
(E)
Installation place precautions
1. Mount the scale unit for more precise positioning as closely as possible to the
workpiece or to the object being measured.
(The farther the scale unit is mounted from workpiece, the greater the mechanical
errors grow.)
2. The scale unit should be used within an ambient temperature range of 0 to 40°C
(32 to 104°F). Avoid locations where the scale unit is exposed to direct sunlight and
heat sources such as motors.
3. Do not place anything on the mounted scale unit, or step on it: excessive force to the
scale unit causes trouble.
6. Trouble Information ................................................. 37
(E
English
) 1
1. Outline
English
1-1. Introduction
1-1-1. SR138R series
The SR138R series is a linear scale with a built-in reference
point.
The relative positional relationship between the scale part and
slider part is adjusted and secured using a slider holder.
Be sure to always use together with the CH04 connection cable
(optional).
Note
If the SR138R series and CH04 are ordered separately, electrical
adjustment needs to be made for the CH04 before usage. No
adjustment is necessary if electrical adjustment was requested
when ordering.
1-1-2. CH04 series
This is a dedicated cable incorporating a built-in circuit for
converting SR138R series signals to general-purpose A/B
quadrature output. Combining with the SR138R series enables
connection of Magnescale Co., Ltd. counter units (such as the
LH70 and LH71), controllers, and other external equipment.
1-1-3. GB-ER series
The GB-ER series is a product that includes the SR138R series
and a CH04-03C connection cable which has already been
electrically adjusted.
Note
Be sure that the serial No. of the SR138R series and the
combination No. of the CH04-03C match when using in
combination together.
1-1-4. CE10 series
This is an extension cable (optional) for extending the cable
length.
Combining with the CH04 enables extension up to a maximum of
30 m/98.4 ft.
1-2. Major Features
• Compact size and light weight, built-in reference point
• Easy to install
• Same coefficient of expansion as that of machine tools
This holds the detection head. When shipped, it is secured by
the slider holder.
Alignment mark
4
2
Slider mounting hole (two holes)
Slider center
Center foot plate
Measuring length mark (right)
3
Serial No./Reference
point indication
8
Serial No.
******
Scale unit
Round connector (male)
Scale
mounting hole
(two holes,
both ends)
Side cover R
2 Slider center
This indicates the mechanical center of the slider. It serves as
a reference when viewing the relative position with the
measuring length marks.
(E
English
) 5
English
3 Measuring length marks
These indicate the effective movement range over which
accuracy is assured with respect to the slider center. The
measuring length represents the length of the effective
movement range.
Note
When mounting and using the scale unit, be sure to operate
the unit within this range. Using the scale unit in excess of
the effective movement range may damage the unit.
4 Reference point mark
This mark indicates the position where the reference point
signal is output with respect to the slider center.
In the standard specifications, one reference point exists in
the center of the measuring length.
5 Slider holder
This secures the scale part and slider part, and should be
stored after removal.
6 Model name
This indicates the scale unit model name.
7 Center foot plate
This is mounted when the measuring length is 1050 mm/
41.3" or more, and should be secured when mounting the
scale unit.
8 Serial No./Reference point indication
This indicates the scale unit serial No. and the reference
point of the scale unit.
For the GB-ER series, it is the same as the combination No.
of the matching connection cable.
Note
In this scale system, the serial No. of the scale unit and the
combination No. of the connection cable (CH04 series) must
match when used in combination together.
6
(E)
1
2-2. Connection Cable
CH04 : included only with the GB-ER series
Note
When procured separately, electrical adjustment is necessary.
Input/output connector
Interface unit
5
6
Model name
3
7
CH04-03C
Combination No.
Status lamp
1 Interface unit
This is connected to the rear panel of the counter unit.
The interface unit incorporates circuits that have been
electrically adjusted to the optical setting.
2 Conduit cable
This protects the internal cables.
3 Model name
This indicates the cable model name.
4 Round connector (female)
This connects with the round connector (male) on the scale
unit.
5 Input/output connector
Scale signals and reference point signals are output when
DC +5 V is supplied as the power source.
Conduit cable
2
8
Interface unit tap for fixing
Round connector
4
(female)
6 Combination No.
For the GB-ER series, this is the same as the serial No. of the
matching scale unit.
7 Status lamp
This is a lamp for checking the signals.
Lit green : Normal
Lit red: Error (Overspeed, cable disconnection, invalid
signal)
8 Interface unit tap for fixing
The interface unit can be secured in place using the supplied
fixing plate and screw. (M3 depth 3 mm)
(E
English
) 7
3. Mounting Method
English
3-1. Precautions before Mounting
Before mounting, be sure to always check “Mounting
Precautions”.
Disassembly prohibited
<Scale unit>
• Do not disassemble the scale unit. The accuracy cannot be
guaranteed if disassembled. The slider holder only can be
removed.
<Connection cable>
• The connection cable is already adjusted, and so do not
disassemble it. The accuracy cannot be guaranteed if
disassembled.
• The connection cable that is sold separately for the SR138R
must have its case removed for electrical adjustment. It should
not be disassembled for any other reason.
Do not apply excessive force.
• During operation, do not apply excessive force to the scale
unit. The scale unit is comprised of precision mechanical parts
and electromagnetic parts. Applying excessive force can
significantly reduce the performance and lifespan.
• During operation, do not apply excessive force to the interface
unit of the connection cable. Precision electrical parts are
installed and adjusted inside the interface unit. Applying
excessive force can significantly reduce the performance and
lifespan.
• When carrying, support both the scale part and slider part
together. Do not carry by holding the head cable, round
connectors, or other parts.
8
(E)
3-2. Mounting Precautions
Note
Be sure to ground the scale unit and the slider part to prevent
trouble to noise.
When mounting the scale unit vertically, be sure to mount the
slider part of the scale unit on the opposite side of a workpiece or
cutting tool.
3-2-1. Checking the mounting method
Check that the scale unit can be mounted in the relative position
shown in the Fig. 3-1.
* Do not mount the scale in any other direction since difficulties
with servicing and maintenance may arise.
(The mounting position A in particular is recommended:
cutting fluid and chips may be effectively kept out.)
(The mounting position B is possible only when cutting fluid
and chips will not get inside the scale.)
Recommended
A
Fig. 3-1 Scale unit mounting direction
B
Cutting tool
Fig. 3-2 Mounting the scale unit vertically
Slider part
Scale part
(E
English
) 9
3-2-2. Setting the movement range
3-2-3. Protection of the head cable
English
Mount the scale unit in the operating range shown in Fig. 3-3.
• A leeway (equivalent to 7 mm/0.28" at the left and right ends of
the scale unit for a measuring length of up to 200 mm/7.8" and
15 mm/0.59" for a measuring length of up to 250 mm/9.8") is
provided for the slider movement. Be sure not to move the
slider part beyond this limit or the scale part may be damaged.
• Mechanical limiting devices (stoppers, etc.) are required for
sliders which move in excess of the effective movement range
of the scale unit. In these cases, be sure to take the appropriate
measures before mounting the scale unit.
Measuring
length mark
Slider center
Mount the scale so that the slider center moves within this range.
(Effective movement range)
Fig. 3-3 Movement range
Measuring
length mark
The head cable has an integrated design with the scale unit, and
so mount the scale unit while being careful not to put pressure on
the cable. Take care not to pull the head cable forcefully or bend
it repeatedly or the cable may break.
3-2-4. Mounting a protective cover
Where the scale unit is exposed to chips and cutting fluid, provide
a protective cover shown in Fig. 3-4 to maintain high
performance of the scale unit.
Fig. 3-4 Example of protective cover
10
(E)
3-3. Required Items for Mounting
Accessories (supplied)
Hexagonal socket head cap screw ............................................ 3
M4×10 for mounting scale part
(2 pcs. for scale of L<1000 mm/39")
Hexagonal socket head cap screw
M4×8 for mounting slider part ...................................... 2
M4×12 for mounting slider part .................................... 2
Pan head screw
M4×5 for cable clamp (small) ....................................... 2
M4×10 for cable clamp (large) ...................................... 4
M4×5 for mounting interface unit ................................. 2
M3×5 for mounting fixing plate .................................... 2
When the scale mounting surface is finished and meets the
parallelism and flatness specifications below, just mount the
scale part.
Scale unit with measuring length of less than 1050 mm/
41.3" (no center foot plate)
Screws used / Tightening torque: Hexagonal socket head cap
screws M4×10 (2 pcs.), 2 plain washers (M) / 350 N·cm
8/0.31" or more
A
B
D
C
Scale unit with measuring length of 1050 mm/41.3" or
more (with center foot plate)
Screws used / Tightening torque: Hexagonal socket head cap
screws M4×10 (3 pcs.), 3 plain washers (M) / 350 N·cm
Flatness of A, B surfaces
Parallelism of A, B surfaces to
machine table movement
Side A: Scale part abutment side
Side B: Scale part installation side
within 0.1 mm/0.004"
Provide the range shown in Fig. 3-5 for surface A. The above
tolerances suppose no quick change in the surfaces and no
obstacle in the way between the right and left mounting surfaces.
12
(E)
<2> When the scale mounting surface is a
casting surface
Mount the scale part using mounting brackets
(1) When the scale mounting surface is a casting
surface and parallelism is not satisfied
Use mounting brackets and adjust so that the parallelism
specified in <1> may be satisfied.
The mounting brackets need only cover the length of at least
the feet of the scale part. However, the brackets must be long
enough for the parallelism of the right and left feet of the
scale part to be measurable.
If a problem occurs in the temperature tracking performance
with the machine, try to place the mounting brackets over the
entire length of the scale unit.
Parallelism measurement of side A
Mounting bracket
Pick tester
Parallelism measurement of side B
English
Fig. 3-6 Parallelism measurement of the mounting brackets
If the mounting bracket shape has an abutment surface,
adjust it so that the surface accuracy reading is within the
range shown in Section <1>. Use the procedure in (4) to
make adjustments if there is no abutment surface. Also, use
the procedure in (4) when the installation surface accuracy
cannot be obtained.
(E
) 13
English
(2) Checking of mounting position and tapping
Check that the parallelism for mounting scale part meets the
specifications, and then tap for M4 screws of 10 mm/0.39"
depth referring to the outline drawing on page 34.
(3) Mounting of scale part
Mount the scale part loosely with M4×10 hexagonal socket
head cap screws and plain washers (large), and leave it for 30
minutes for the scale part to reach ambient temperature.
Then firmly mount the scale.
(4) Measuring parallelism of scale part with machine
table movement
Place a pick tester or dial gauge directly where the alignment
mark (Fig. 3-7 1) is positioned on the side of the scale part,
and check that the scale part is surely mounted parallel to the
machine table movement.
Adjust the parallelism of the length between the two alignment
marks to within 0.08 mm/0.003" and tighten the setscrews. For
the scale with a measuring length of 1050 mm/41.3" or more,
adjust the parallelisms of the lengths between the alignment mark
and those on both sides of it to within 0.08 mm/0.003".
Note
Since alignment marks are not provided on scales part with a
measuring length of 150 mm/5.9" or less, place the pick tester or
dial gauge on the scale part and ensure that the allowance at the
two ends of the machine travel is within 0.08 mm/0.003".
Foot
Parallelness allowance
within 0.08 mm/0.003"
Center foot plate
14
2
Fig. 3-7 Parallelness check of scale part and machine table movement
1
Alignment mark
(E)
Foot
Alignment marks
Alignment marks
Plain washer
(M)
M4×10
Fig. 3-8 Parallelism check by alignment marks
Alignment marks
(5) When the specified parallelism for the scale
mounting bracket is not obtained
Insert spacers below the feet and make adjustment by
placing a pick tester or dial gauge at 2 in Fig. 3-7 to adjust
the parallelism to within 0.08 mm/0.03" throughout the
length between may be obtained at the alignment marks.
For the scale unit with a measuring length of more than
1050 mm/41.3", make sure that the parallelism near the
center foot plate is also within 0.08 mm/0.003".
<3> Mounting the slider part
(1) When parallelism and flatness of the mounting
surface are already satisfied
When the mounting surface is finished and its parallelism
and flatness satisfy the specifications below, just mount the
slider part.
Screws used / Washers used: Hexagonal socket head cap
screws M4×12 (2 pcs.), 2 plain washers (S)
Tightening torque: 350 N·cm
Flatness of C and D surface
Parallelism of C and D surface to
machine table movement
Parallelism between B and C surfaces
Parallelism between B and D surfaces
Clearance between B and C surface
Side A: Scale part abutment surface
Side B: Scale part installation surface
Side C, D : Slider part installation surface
Move the machine table till the mounting surface comes just at
the slider part.
First use the supplied spacers to fill the gap between the
mounting surface and slider part, and then secure the slider part.
Then remove the screws which fix slider holder. In this process,
be careful not to make the slider part and the mounting bracket
contact with each other.
within 0.05 mm/0.02"
within
0.05 mm/60mm
(0.002"/2.36")
8.7 to 8.8 mm/
0.343 to 0.346"
(E
English
) 15
English
[When the supplied spacers (t=0.1 mm×5) are
unable to fill the gaps between the mounting
surface and the slider part]
Loosen the screws securing the slider part of the slider
holder, press the slider part against the scale part, and tighten
the bolts in this condition.
(2) When the gap between the B and C surfaces is set
to exactly 9 mm/0.35"
Loosen the screws securing the slider holder and move the
slider part by hand to align it with the brackets. Then secure
the slider part at the position of 42±0.2 mm/1.65"±0.008" as
shown in Fig. 3-9. Spacers are not required.
Note
Do not attempt to move the bracket side with the slider
holder secured, as the brackets may strike the slider part.
42±0.2/1.65"±0.008"
8.7 to 8.8/0.34" to 0.35"
(3) When the slider mounting surface has yet to meet
the specifications
When the mounting surface of the machine is a casting
surface, use a bracket.
Place the bracket on the underside of the slider part without
loosening the screws that hold the slider holder. Adjust the
position of the bracket and mount it with the supplied
M4×12 bolts.
Slider part
Slider holder
Scale part
Mounting bracket
Fig. 3-10
2-Plain washers
(small)
2-M4×12
(accessory)
4t to 6t/0.16" to 0.24"
17/0.67" or less
16
(E)
B
C
Fig. 3-9
(4) When the bracket is mounted on the top of the
slider part
Align the mounting bracket with the top surface of the slider
part, and adjust the bracket so that the height from the scale
mounting surface is brought to 21±0.1mm/0.83"±0.004".
Ensure that the mounting bracket used comes in a shape that
accommodates the projecting part of the slider holder. As
shown in Fig. 3-11, secure the slider part using two cap
screws (M5×25 hexagonal socket head cap screws) and two
nuts (M5).
Projecting part of the slider
(5) When the bracket is mounted on the rear of the
slider part
Align the slider part rear side and mounting bracket without
loosening the screw securing the slider holder, and then
secure using the supplied two screws M4×8 while adjusting
the bracket height.
42±0.2
4t/0.16"
1.65"±0.008"
English
2-ø5.5
ø0.22"
Mounting
bracket
37/1.46"
9
0.35"
7
0.27"
2-M5×25
(accessory)
6 to 8t
0.24" to 0.31"t
Fig. 3-11
21±0.1
0.83"±0.004"
2-M5 nuts
(accessory)
Slider part
Mounting bracket
15/0.59"
2-M4×8 (accessory)
Fig. 3-12
*The effective screw depth of the slider part is 4.5 mm.
If the mounting bracket has a thickness less than 4 mm,
use washers to adjust the thickness.
(E
) 17
<4> Removal of the slider holder
<5> Checking the movement range
English
Remove the four M2.6 mounting screws for the slider holder and
then remove the slider holder itself.
• Be sure to adhere the screening label (accessory) to cover the
screw holes after removing the slider holder. If these holes are
not plugged, chips, cutting fluid or dust may enter and the
accuracy of the scale may be deteriorated. Use a ball-point pen
to enter the mounting date and name of the person responsible
on the label.
Remove the four M2.6 screws.
Slider holder
Adhere the screening label
(accessory).
Fig. 3-13 Removal of slider holder
Note
Keep slider holder and four M2.6 screws after the installation.
After mounting the scale part and slider part, be sure to move the
machine over the overall length of the scale to check that the
machine moves within the measuring length.
Remember that the scale unit may be damaged if the machine
moves beyond the movable range of the scale unit (measuring
length + leeway).
<6> Mounting the headcable
Fix the head cable with cable clamps so that they will not
interfere with moving parts of the machine.
Note
The head cable has an integrated design with the scale unit, and
so mount the scale unit while being careful not to put pressure on
the cable. Take care not to pull the head cable forcefully or bend
it repeatedly or the cable may break.
Secure the cable clamp using a M4×5
cable clamp screw (accessory).
18
(E)
Fig. 3-14
<7> Connecting cables
The distance between the SR138R and GB-ER series and the
connection cable can be extended by using an optional extension
cable (CE10 series).
Scale unit
Extension cable (CE10-**C)
Cable length
CE10-**C
44/1.73"44/1.73"
ø18
ø0.70"
Round connector (female)
Note
The maximum total cable length when extended is 30 m/98.4 ft.
Connection cable (CH04-03C)
**
Unit : mm/inch
Model
CE10-01C
CE10-03C
CE10-05C
CE10-10C
ø9
ø0.35"
Round connector (male)
ø18
ø0.70"
English
Cable length
1 m/3.2 ft
3 m/9.8 ft
5 m/16.4 ft
10 m/32.8 ft
Fig. 3-15
(E
) 19
English
Note
• For the GB-ER series, be sure to connect the cable so that the
serial No. of the scale unit matches the combination No. of the
connection cable.
• When the SR138R series and optional connection cable (CH04
series) are procured together in the electrically adjusted
condition, connect the cable so that the serial No. of the scale
unit matches the combination No. of the connection cable in
the same manner as for the GB-ER series.
• When procuring the optional connection cable (CH04 series)
separately, be sure to perform the electrical adjustments.
1
2
Female side
Rotate by hand
Part B
Male side
Notch matches
Part C
Part A
Male side
20
Female side
Coupling nut
Fig. 3-16
(E)
3 Use a spanner on
parts A and B to
turn in the direction
of the arrow.
Female side
3/4 of a
revolution
Part B
Fig. 3-17
Part A
Part C
Male side
Note
• Use a wrench or other tool to tighten the connectors to a torque
of 150 to 250 N·cm. Waterproof performance cannot be
guaranteed unless the connectors are tightened to the specified
torque.
• Do not tighten the connectors by attaching wrenches to parts A
and C.
<8> Mounting the conduit cable
Fix the conduit cable with cable clamps so that they will not
interfere with moving parts of the machine.
Note
Care should be taken at this time as it may be necessary to
provide the cable with some leeway with respect to the machine
operation.
English
To remove
Use a spanner on parts
A and C to turn in the
direction of the arrow.
Female side
Part C
Part A
Part B
Fig. 3-18
Male side
Note
Do not loosen the connectors by attaching wrenches to parts A
and B.
Secure the cable clamp using a M4×10 cable
clamp screw (accessory).
Fig. 3-19
(E
) 21
English
<9> Mounting the round connectors
Secure the connected male and female round connectors with the
accessory clamp.
Be sure to secure the connectors, as they are dangerous if loose.
1 Fit the connectors into the open side of the clamp.
2 Tighten the top and bottom edges of the clamp together
using the two accessory screws (+B M4×10).
3 Tighten the screws firmly until the top and bottom edges of
the clamp touch.
Then check that the connectors are secured firmly.
Clamp mounting dimensions and outer dimensions
6/0.23"
34/0.33"
4.4/0.17"
30/1.17"
54/2.11"
Clamp
Tighten with binding pan
head screws (+B M4×10).
22
The height dimension after mounting should be the same as the
outer diameter of the connectors.
(E)
Tighten until the
edges touch.
Fig. 3-20
<10> Connecting the interface unit to a counter
unit
When the connection cable must be electrically adjusted for the
SR138R series, see “4. Electrical Adjustment of the Connection
Cable Circuit”.
1 Check that the counter unit power is off. Then, connect the
interface unit of the connection cable with the connector 1-3
on the rear panel of counter unit.
Note
Check the scale unit mounting axis and counter unit insertion.
2 Secure the interface unit using the screws. (Tightening
torque: 60 N·cm)
Rear panel of counter unit
Fig. 3-21
Interface unit
English
(E
) 23
English
<11> Connecting the interface unit to a
controller
1 Use the screw (M3×5) to mount the supplied fixing plate to
the interface unit.
2 Use the supplied screw (M4×5) to secure 1 to the mounting
surface.
Note
Prepare two M4 tap holes on the mounting surface.
20/0.79"
Fig. 3-22
<12> Removal of the scale unit
When removing a mounted scale unit from the machine, be sure
to secure the slider part to the scale part with the slider holder.
Follow the numerical sequence.
2 Secure the slider part using four M2.6 cap screws.
1 Peel off the
screening plate.
3 Loosen screws and
remove them from
machine.
Fig. 3-23 Removing a scale unit
Securing the slider part to the scale part keeps the alignment of
the scale part and slider part after removal from the machine and
makes reinstallation easy.
24
(E)
4.
Electrical Adjustment of the Connection Cable Circuit
(SR138R series only)
* The operations described in this section are not required for the
GB-ER series which are shipped together with the connection
cable in the electrically adjusted condition.
When connecting the SR138R series with a counter unit, use a
CH04 series (optional) connection cable.
The connection cable must be electrically adjusted together with
the used scale unit. Perform this adjustment according to the
procedures outlined below.
Electrical adjustment is performed in order to optimize the A/B
quadrature signal from the scale unit. Therefore, if the adjustment
is not performed as specified, the scale accuracy specifications
will not be satisfied.
Note
When the scale unit and counter unit connection cable (CH04
series) are ordered together, they are shipped in the adjusted
condition so no adjustment is necessary. Connect the scale unit
and cable so that the serial No. on the scale unit matches the
combination No. on the connection cable.
Required items
• Oscilloscope
(Sensitivity: 0.01 V or more,
frequency bandwidth: 1 MHz or more)
Input sensitivity: DC0.1 V/div (1 using a 10 : 1 probe)
Horizontal axis sweep : 50 ms/div to 0.5 ms/div
Trigger source: INT
Trigger mode: AUTO
• Standard screwdriver (for rotating the trimmer)
• Phillips screwdriver
(for removing and mounting the upper case)
<1> Removing the upper case
Remove the two screws M2×8 mounting the upper case of the
interface unit and remove the upper case.
M2×8
Upper case
English
Fig. 4-1
(E
) 25
English
RV1 (SIN DC)
RV3 (COS DC)
RV5 (REF DC)
TP1 (SIN)
TP2 (COS)
TP3 (REF)
TP4 (GND)
CL1 (ZG)
CN2-5pin (Z)
RV6 (REF amplitude)
Switch 1
(Reference point
POS1sw)
Switch 2
(Reference point
POS2sw)
RV4 (COS amplitude)
RV2 (SIN amplitude)
CH1CH2
Oscilloscope
Probe
Signal adjustment
section-datailed view
Interface unit
26
(E)
<2> SIN/COS signal check
Note
• Be sure that the interface unit is turned off before attaching or
removing the probe of the oscilloscope.
• The check pin of the interface unit has little physical strength,
and so use an IC clip or other implement to connect.
(Recommended IC clip: SMG50 grabber clip by Tektronix,
etc.)
• Check that the interface unit is turned off.
• Refer to section for removing and attaching the cover of the
interface unit.
1 Connect the CH1 probe of the oscilloscope to the TP1 (SIN)
and TP4 (GND) check pins of the interface unit.
2 Connect the CH2 probe of the oscilloscope to the TP2 (COS)
and TP4 (GND) check pins of the interface unit.
Fig. 4-2
3 Set the TIME/DIV switch of the oscilloscope to the X-Y
mode.
4 Set the deviation sensitivity (VOLTS/DIV) of CH1 and CH2
of the oscilloscope to 0.2 V/DIV.
5 Set the input coupling switches of CH1 and CH2 of the
oscilloscope to GND and adjust the oscilloscope to locate
the signal at the bottom left of the screen. (Fig. 4-3)
Fig. 4-3
6 Set the input coupling switches of CH1 and CH2 of the
oscilloscope to DC.
7 Turn on the interface unit.
8 SIN/COS signal DC level check and adjustment
Move the scale part or slider part, and check that the
Lissajous' curve center (Fig. 4-4) is within the specified
value over the entire length.
If the center is not within the specified value, adjust the DC
level so that the Lissajous' curve center is set at the specified
value.
Specified value of Lissajous' curve center = 0.9 V ±0.02 V
DC level adjustment trimmer RV1 (SIN) : a direction
RV3 (COS) : b direction
English
a
b
Fig. 4-4
(E
) 27
English
9 SIN/COS signal amplitude check and adjustment
Move the scale part or slider part, and check that the
Lissajous' curve amplitudes A and B (Fig. 4-5) are within the
specified value over the entire length.
If an amplitude is not within the specified value, adjust the
amplitude so that the Lissajous' curve amplitude A or B is set
at the specified value.
Specified value of Lissajous' curve amplitude =
1.0 Vp-p ±0.06 V
Amplitude adjustment trimmer RV2 (SIN) : A direction
RV4 (COS) : B direction
A
<3> Reference point signal check
Connect the oscilloscope CH1 probe to the TP3 and TP4 check
pins of the interface unit.
1 Set the TIME/DIV switch of the oscilloscope to 200 ms.
2 Set the CH1 deflection sensitivity (VOLTS/DIV) of the
oscilloscope to 0.2 V/DIV.
3 Set the input coupling switch of CH1 of the oscilloscope to
GND, and adjust the oscilloscope to locate the signal at the
bottom edge of the screen. (Fig. 4-6)
28
! Turn off the interface unit.
(E)
B
Fig. 4-5
Fig. 4-6
4 Set the input coupling switch of CH1 of the oscilloscope to
DC.
5 Turn on the interface unit.
6 Reference point signal single-amplitude check and
adjustment
Move the slider part in the right direction with respect to the
scale part, and pass through the reference point.
When moving the slider head, check that the reference point
top-side single amplitude C (Fig. 4-7) is within the specified
value.
If it is not within the specified value, adjust the amplitude so
that the reference point top-side single amplitude C is set at
the specified value.
Specified reference point value of single amplitude =
1.0 V ±0.04 V
Reference point amplitude adjustment trimmer RV6
Reference point detection
check direction
7 Reference point signal DC level check and adjustment
Move the scale part or slider part to a position having no
reference point.
When moving the slider head, check that the reference point
signal DC level c (Fig. 4-8) is within the specified value.
If it is not within the specified value, adjust the DC level so
that the reference point signal DC level c is set at the
specified value.
Specified reference point value of DC level =
0.2 V ±0.02 V
Reference point amplitude adjustment trimmer RV5
c
English
C
Fig. 4-7
Fig. 4-8
(E
) 29
English
<4> Reference point position check
1 Connect the CH1 probe of the oscilloscope to the CL1 (ZG)
check land and TP4 (GND) check pin of the interface unit.
2 Connect the CH2 probe of the oscilloscope to the CN2-5 pin
(Z) and TP4 (GND) check pin of the interface unit.
3 Set the TIME/DIV switch of the oscilloscope to 200 ms.
4 Set the deflection sensitivity (VOLTS/DIV) of CH1 and
CH2 of the oscilloscope to 2V/DIV.
5 Set the input coupling switch CH2 of the oscilloscope to
GND, and adjust the oscilloscope to locate CH1 in the screen
center.
Adjust the oscilloscope to locate CH2 in one grid line below.
(Fig. 4-9)
CH1 (ZG)
CH2 (Z)
6 Set the input coupling switches CH1 and CH2 of the
oscilloscope to DC.
7 Turn on the interface unit.
8 Position setting of reference point gate signal (CL1)
and reference point output signal (CN2-5pin)
Move the scale part or slider part and pass through the
reference point.
When passing through the reference point, set the switch 1/2
(reference point POS1/2SW) so that the reference point
output signal is output at the position nearest to the center of
the reference point gate signal. (Fig. 4-10)
CH1 (ZG)
CH2 (Z)
Fig. 4-10
30
Fig. 4-9
(E)
SIN signal
COS signal
MODE1 MODE2
ONON
Approx. 45°
OFFON
Approx. 135°
ONOFF
Approx. 225°
OFFOFF
Approx. 315°
The reference point output signal is the
logical product of one of the four one-cycle
reference points that was selected by the
switch setting and the reference point gate.
Reference point gate
signal
Reference point
output
When both mode switches 1 and 2 are on
English
(E
) 31
9 Reference point operation check (When checking the
reference point using LH70/LH71)
Use the reference point load and the reference point hold to
check the reference point in both directions.
1. Connect the interface unit to the LH70/LH71 counter
unit, and then turn it on.
2. Enter “000.0000” for the reference point offset amount.
1) Press the
key. ( lamp lights up)
5) Move the scale part or slider part until it goes past the
reference point.
A beeping sound is made when the reference point is
detected.
*
When the reference point is detected, counting starts.
6) Press the key to exit the mode.
3. Checking the reference point in both directions
1) Press the key. ( lamp lights up)
English
32
(E)
Display↓
(Current value (ABS))
2) Press the , and then press the key.
The stored offset value (value displayed when the
reference point is loaded) is displayed.
Display(Example: Distance
from the reference
point to the datum
point)
3) Enter the offset (000.0000) using the numeric key.
Display(000.0000)
4) Press the key.
A reference point wait status is activated. (
value flashes)
Display(Flashes)
Display↓
(Current value (ABS))
2) Press the key corresponding to the axis to be put
into a reference point hold status, and then press the
key.
A reference point wait status is activated. (Current value)
Display(Lights up)
3) When the reference point is passed through from
the opposite direction that it was passed through in
step 2), the count at the reference point position is
held. (Axis label flashes)
*A beeping sound is made when the reference point
Measuring length+104 mm/4.1"
(Measuring length 200 mm/7.8" or less)
Measuring length+120 mm/4.72"
(Measuring length 250 mm/9.8" or more)
Maximum travel:
Measuring length+14 mm/0.55" (Measuring length 200 mm/7.8"
or less, 7 mm/0.275" each at right and left)
Measuring length+30 mm/1.2" (Measuring length 250 mm/9.8"
or more, 15 mm/0.6" each at right and left)
Scale accuracy (at 20°C/68°F):
(SR138R series)
Metric: ±(0.0025+0.0025×measuring length in meters) mm
+
Inch : ±(0.0001
0.0000025×measuring length in inches) inch
Input/output signals:
Output signal:A/B/Z signal
Power supply: DC 5 V ±5 %
Connector: D-sub 9-pin
Connector pin layout: see “Dimensions”
Resolution: 0.5 µm
Response speed:
Scale signals: 60 m/min
Reference point signal: 60 m/min
Reference point position: One center location in
measuring length
Cable length: Max. 30 m/98.4 ft
Parallelism: 0.1 mm/0.004"
Current consumption: Max. 200 mA
–6
Thermal expansion coefficient: (11±1)×10
Operating temperature:0 to 40°C/32 to 104°F
Storage temperature: –10 to +50°C/14 to 122°F
/°C
Connection cable
(CH04: included only with the GB-ER series)
Cable length : 3 m/9.8 ft
Design and specifications are subject to change without notice.
(E
English
) 33
5-2. Dimensions
English
34
(E)
Scale unit
6.5
0.26"
9.5/0.37"
Head cable
(C)
SR138–
R
* * *
Measuring
length mark
Overall length=A
Mounting hole pitch=B
Measuring length=L
Mounting hole pitch×1/2
D
Center foot plate
5×7/0.2"×0.28" long hole (Mounting hole)
(Measureing length L
1050 mm/41.34")
50/1.97"
60/2.36"
75/2.95"
85/3.35"
36/1.42"
Cable length=300/11.81"
ø5.5
0.22"
44/1.73"
20/0.79"
5/0.2"
2-ø5/0.2" hole, ø9/0.35" hole
Slider center
Slider holder
ø18/0.
Alignment mark
10.5/0.41"
Serial No.
******
2–4.5×5.5/0.18"×0.22"
long hole (Mounting hole)
1"
7
Round connector (male)
(C)
Serial No.
6.5
0.26"
25/0.98"
6/0.24"
15
21/0.83"
42/1.65"
12
0.47"
25/0.98"
0.59"
Unit : mm/inch
36.5/1.44"
9
0.35"
Connection cable (CH04 : included only with the GB-ER series)
■ When the machine overruns, cables become damaged, the
scale unit becomes deformed or other situations arise which
may affect scale performance, the unit must be repaired.
• In these case, stop the machine immediately and consult
your Magnescale Co., Ltd. distributor.
■ The scale unit may not be repairable, depending on the extent
of the damage.
Regular cleaning is recommended in order to prevent these types
of trouble beforehand.
• Clean away any cutting scraps at the start and finish of work
each day to prevent cutting scraps from accumulating
around the scale unit.
• Accumulated cutting scraps may impede the sliding motion
of the scale unit and result in malfunction.
• Avoid using an air gun or similar device to clean away the
cutting scraps. Although the running portions of the scale
unit are sealed, the scale unit does not have a completely
sealed structure. If an air gun or similar device is used,
cutting scraps and other objects may enter the sealed
portions of the scale unit and result in malfunction.
English
(E
) 37
38
(E)
■ Allgemeine Vorsichtsmaßnahmen
Beim Einsatz von Geräten von Magnescale Co., Ltd. sind die
folgenden allgemeinen Vorsichtsmaßnahmen zusätzlich zu den in
der vorliegenden Anleitung jeweils speziell angegebenen
Warnhinweisen zu beachten, um einen korrekten Einsatz des
Gerätes zu gewährleisten.
• Vor und während des Betriebs sicherstellen, dass das Gerät
korrekt funktioniert.
• Geeignete Sicherheitsvorkehrungen zur Vermeidung von
Schäden für den Fall ergreifen, dass am Gerät eine Störung
auftritt.
• Wird das Gerät außerhalb der angegebenen Spezifikationen
und Einsatzzwecke verwendet oder werden am Gerät
Änderungen vorgenommen, kann keine Garantie für Funktion
und Leistung übernommen werden.
• Beim Einsatz des Gerätes mit einem anderen nicht empfohlenen
Gerät werden u.U. je nach Betriebsbedingungen die in der
vorliegenden Anleitung aufgeführten optimalen Funktionen und
Leistungen nicht erreicht. Daher die Kompatibilität im Voraus
gründlich prüfen.
■ Vorsichtsmaßnahmen zum Einsatz unter den
folgenden Umweltbedingungen
1 Bei Verwendung von wassermischbarer Schneidflüssigkeit,
oder beim Schneiden metallischer oder nichtmetallischer
(Keramik, Glasfaser usw.) Objekte:
• Die Maßstabseinheit so montieren, dass sie nicht direkt
wassermischbarer Schneidflüssigkeit oder Spänen
ausgesetzt ist.
• Eine Schutzhaube anbringen, um das Eindringen von
wassermischbarem Schneidflüssigkeitsnebel oder Staub in
das Innere der Maßstabseinheit zu verhüten.
2 Bei Montage an einer Massivumformmaschine oder einer
anderen Maschine, die sich mit hoher Geschwindigkeit über
lange Zeitspannen innerhalb eines bestimmten Bereiches hin
und her bewegt:
• Regelmäßig Öl oder Sprühschmiermittel (CRC, WD40 usw.)
auftragen.
Bei Verwendung unter den in 1 oder 2 genannten Bedingungen
sind die obigen Maßnahmen unbedingt zu treffen. Wird dies
versäumt, ist keine ausreichende Qualität gewährleistet.
(G
) i
Sicherheitsmaßnahmen
Bei dem Entwurf von Magnescale Co., Ltd. Produkten wird größter Wert auf die Sicherheit gelegt. Unsachgemäße
Handhabung während des Betriebs oder der Installation ist jedoch gefährlich und kann zu Feuer, elektrischen
Schlägen oder anderen Unfällen führen, die schwere Verletzungen oder Tod zur Folge haben können. Darüber
hinaus kann falsche Behandlung die Leistung der Maschine verschlechtern.
Beachten Sie daher unbedingt die besonders hervorgehobenen Vorsichtshinweise in dieser Bedienungsanleitung,
um derartige Unfälle zu verhüten, und lesen Sie die folgenden Sicherheitsmaßnahmen vor der Inbetriebnahme,
Installation, Wartung, Inspektion oder Reparatur dieses Gerätes oder der Durchführung anderer Arbeiten durch.
Bedeutung der Warnhinweise
Bei der Durchsicht dieses Handbuchs werden Sie auf die folgenden
Hinweise und Symbole stoßen. Machen Sie sich mit ihrer
Bedeutung vertraut, bevor Sie den Text lesen.
Warnung
Eine Missachtung dieser Hinweise kann zu Feuer, elektrischen
Schlägen oder anderen Unfällen führen, die schwere Verletzungen
oder Tod zur Folge haben können.
Vorsicht
Eine Missachtung dieser Hinweise kann zu elektrischen Schlägen
oder anderen Unfällen führen, die Verletzungen oder
Sachbeschädigung der umliegenden Objekte zur Folge haben
können.
Zu beachtende Symbole
VORSICHTELEKTRISCHER
SCHLAG
Symbole, die Handlungen verbieten
NICHT
ZERLEGEN
Symbole, die Handlungen vorschreiben
Hinweis
Diese Hinweise sollten beachtet werden, um eine korrekte
ii
(G)
Handhabung des Gerätes zu gewährleisten.
STECKER ABZIEHEN
Warnung
• Betreiben Sie dieses Gerät nur mit der vorgeschriebenen Versorgungsspannung, da
• Führen Sie Installationsarbeiten nicht mit nassen Händen aus, da hierbei die Gefahr
• Unterlassen Sie jeden Versuch, das Gerät zu zerlegen oder umzubauen, da dies zu
Vorsicht
• Überprüfen Sie vor Arbeitsbeginn unbedingt den Zustand von Maschine und
• Schalten Sie unbedingt die Strom- und Luftversorgung sowie andere
anderenfalls die Gefahr von Feuer oder elektrischen Schlägen besteht.
elektrischer Schläge besonders groß ist.
Verletzungen oder Beschädigung der internen Schaltungen führen kann.
Vorrichtungen, um die Arbeitssicherheit zu gewährleisten.
Antriebskraftquellen aus, bevor Sie Arbeiten an der Maschine ausführen.
Anderenfalls kann es zu Feuer oder Unfällen kommen.
• Achten Sie beim Einschalten der Stromversorgung usw. zum Betrieb der Maschine
darauf, dass Sie sich nicht die Finger in peripheren Maschinen und Vorrichtungen
klemmen.
(G
) iii
Hinweise zur Handhabung
Installationshinweise
Beachten Sie bei der Installation dieses Gerätes die folgenden Punkte, um die
Einstreuung von Rauschen und elektromagnetischen Wellen von anderen Geräten zu
verhüten.
1. Verlegen Sie Zuleitungskabel und Verbindungskabel nicht zusammen mit
Starkstromkabeln.
2. Halten Sie bei der Installation des Gerätes einen Mindestabstand von 0,5 m zu
Hochspannungs-, Starkstromquellen oder Hochleistungsrelais ein.
3. Bringen Sie das Gerät auf keinen Fall in die Nähe von Magneten oder Quellen
elektromagnetischer Wellen.
Hinweis
• Magnetische Futter oder andere Magnetkraftquellen von ungefähr 6 × 10–2 [T]
sollten mindestens 50 mm von den Seitenflächen und mindestens 10 mm von den
Öffnungen des Stahlgehäuses der Maßstabseinheit entfernt gehalten werden.
• Falls das Gerät in der Nähe von Magnetkraftquellen installiert werden muss,
treffen Sie unbedingt angemessene Maßnahmen zum Schutz vor
elektromagnetischer Beeinflussung.
iv
4. Um durch Rauschen verursachte Störungen zu vermeiden, sollten Maßstab und
Schieber unbedingt geerdet werden.
(G)
Hinweise zum Installationsort
1. Um eine möglichst präzise Positionierung zu erzielen, empfiehlt es sich, die
Maßstabseinheit möglichst nahe am Werkstück oder zum messenden Objekt
einzubauen.
(Je weiter die Maßstabseinheit vom Werkstück entfernt eingebaut wird, desto
größer werden mechanische Fehler.)
2. Verwenden Sie die Maßstabseinheit innerhalb eines Umgebungstemperaturbereichs
von 0 °C bis 40 °C. Einbauorte vermeiden, wo die Maßstabseinheit direkter
Sonneneinstrahlung und Wärmequellen, wie z.B. Motoren, ausgesetzt ist.
3. Keine Gegenstände auf die angebaute Maßstabseinheit legen und nicht darauf
treten: übermäßig starke Einwirkung von Kräften auf die Maßstabseinheit erzeugt
Störungen.
6. Informationen für den Störungsfall ....................... 37
(G
Deutsch
) 1
1. Übersicht
Deutsch
1-1. Einleitung
1-1-1. Serie SR138R
Bei den Modellen der Serie SR138R handelt es sich jeweils um
einen linearen Maßstab mit eingebautem Bezugspunkt.
Die relativen Positionen von Maßstab und Schieber werden mit
Hilfe eines Schieberhalters eingestellt und gesichert.
Unbedingt darauf achten, diesen Maßstab ausschließlich mit dem
Anschlusskabel CH04 (Sonderzubehör) zu verwenden.
Hinweis
Falls der Maßstab der Serie SR138R und das Anschlusskabel
CH04 separat bestellt wurden, muss vor der Inbetriebnahme eine
elektrische Einstellung für das CH04 vorgenommen werden.
Dies ist nicht erforderlich, wenn die elektrische Einstellung zum
Zeitpunkt der Bestellung in Auftrag gegeben wurde.
1-1-2. Serie CH04
Dies ist ein Spezialkabel mit einer integrierten Schaltung zur
Umwandlung von Signalen der Serie SR138R in ein Allzweck-A/
B-Quadratur-Ausgangssignal. Der Einsatz dieses Kabels mit den
Modellen der Serie SR138R gestattet den Anschluss von
Magnescale Co., Ltd.-Anzeigeeinheiten (z.B. den Modellen
LH70 und LH71), Steuergeräten und anderen externen Geräten.
1-1-3. Serie GB-ER
Die Serie GB-ER umfasst einen Maßstab der Serie SR138 sowie
ein Anschlusskabel CH04-03C, bei dem die erforderliche
elektrische Einstellung bereits werkseitig vorgenommen wurde.
Hinweis
Vor dem gemeinsamen Einsatz sicherstellen, dass die
Seriennummer des Maßstabs der Serie SR138R mit der
Kombinationsnummer des CH04-03C übereinstimmt.
1-1-4. Serie CE10
Dies ist ein Verlängerungskabel (Sonderzubehör) für das
Anschlusskabel.
Bei gemeinsamem Gebrauch mit dem CH04 ergibt sich eine
Gesamtkabellänge von bis zu 30 m.
1-2. Hauptmerkmale
• Kompakte Abmessungen und geringes Gewicht, eingebauter
Bezugspunkt
• Einfacher Einbau
• Ausdehnungskoeffizient identisch mit dem von
Werkzeugmaschinen
• Außerordentlich genaue Positionserkennung
• Außerordentlich widerstandsfähig gegen Öl und Schmutz