Demada Precision Instrument Co., Ltd
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    Room B-401, Chengjian Building, 185 Jumao Road, Xiangcheng District, Suzhou
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Absolute grating ruler JC series
Absolute grating ruler JC series
Product details

characteristic

• Absolute position measurementamount

By powering on, the current position value can be obtained without the need to move to find a reference point and return to zero. Every reading value within the entire range is for that pointCoordinate values


• ASICOptoelectronic devices

By using highly integrated specialized optoelectronic devices, the working speed, acceleration, shock resistance, and vibration performance meet the working conditions of CNC machine tools.

Single field scanning

Adopting single field scanning significantly improves the quality of photoelectric scanning signals, enhances measurement accuracy, and strengthens the product's anti pollution ability.

Measurement accuracy:

Under environmental conditions with a standard temperature of 20 ℃, within any 1-meter measurement site length range, the limit value of the measurement curve, soil F, shall not exceed the accuracy grade A specified.

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Installation information:

The selection of installation method should consider the following principles:

1The lip seal of the grating ruler body must avoid the direction of cutting fluid splashing, which is beneficial for the effective sealing of the ruler body. As shown in the following figure:

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2. In situations where high dynamic characteristics are required or there is significant cutting vibration, the method of fixing the entire length of the ruler body is adopted.

3When installation conditions permit, it is preferable to install the reading head on a relatively fixed component, which is beneficial for the layout of output wires.

Installation accuracy

1The parallelism error of the ruler body relative to the direction of the guide rail movement should not exceed0 twoMillimeters;

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2. The parallelism error of the ruler body relative to the installation surface should not exceed 0 2 millimeters;

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Signal output:

There are two forms of signal output for absolute grating rulersAbsolute position value and incremental signal. hisinThe output of absolute position value isadoptRS485Standard physical interfaceAnd specific digital communication protocols are used to implement it.Users can choose the signal output form according to different application scenarios,You can choose the type of grating ruler.

The incremental signal has an amplitude oflVppThe sine wave differential signal has strong electromagnetic interference resistance due to the use of differential signals and shielding measures of twisted pair cables. The signal technology parameters are as follows:

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technical parameter

Measurement benchmark

Glass grating engraved with absolute and incremental code tracks

Accuracy level

Soil 5 µ m

resolving power

0.01µm

Measure length(mm

220 270 320 370 420 470 520 570 620 670 720 770 820 870 920 970 1020 1340

Absolute position value reading method

Biss (C) throughNewsAgreementSSI AssociationDiscussion, WestdoorsonDrive- Cl IQ protocol Panasonic protocol, Huazhong CNC protocolGuangzhounumerical controlAgreement

Incremental signal

~1Vpp

Fence spacing/signal

20um

cut-off frequency

≥150kHz for 1Vpp(-3dB)

Movement speed

≤180m/m i n

Working voltage/electric current

5v5% soil, 350mA

Reading head

Built in socket, cable can be plugged in and out

Vibration

10g

to attack

30g

working temperature

0℃ -50℃

Storage temperature

-20℃ - 70℃

weight

0.3kg+2.1kg/m

relative humidity

20-80%

Sealing grade

IP53

IP64 (using compressed air)







JC12 series

Small, designed to meet customers' limited installation space requirements, please choose this model if it is not possible to install the standard version.

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technical parameter

Measurement benchmark

Glass grating engraved with absolute and incremental code tracks

Accuracy level

Soilm

resolving power

0.01µm

Measure length(mm

70 120 170 220 270 320 370 420470 520 570 620 670 720 770 850 870 920 970

Absolute position value reading method

Biss (C) throughNewsAgreementSSI AssociationDiscussion, WestdoorsonDrive- Cl iQPanasonic protocol, Huazhong CNC protocolGuangzhounumerical controlAssociation Discussion

Incremental signal

~1Vpp

Fence spacing/signal

20um

cut-off frequency

150kHzfor 1Vpp(-3dB)

Movement speed

≤180m/m i n

Working voltage/electric current

5vSoil 5%,350mA

Reading head

Built in socket, cable can be plugged in and out

Vibration

10g

to attack

30g

working temperature

·0- 50

Storage temperature

-20-70

weight

0.1kg+0.5 kg/m

relative humidity

20-80%

Sealing grade

IP53

IP64 (using compressed air)








Electrical characteristics

Power Supply

The power supply requirement for the grating ruler is DC+5VSoil5 % ,The maximum allowable ripple is2 5 0 mvDue to the presence of a certain resistance value in the power supply cable, it can cause a voltage drop in the power supply. The longer the cable, the greater the voltage drop in the power supply. The maximum length of the conventional cable provided by this product is20 m.exceed20mThe length of the cable needs to be utilized by the user through an external power supply+5VsenseThe signal line increases the power supply voltage to compensate for the voltage drop caused by the internal resistance of the cable.

Grating ruler is turned on and waiting

The startup time of the grating ruler is2In seconds,2After seconds, the output signal is valid.

Cable

presenthavelm,3m,6m,9m,12m,15m,20mbecometypeelectriccableSupplyuseHousehold EnvoyusealsocanPressThe customer wantsSeeking determinationDo it.

If users use connection cables provided by other companies, we do not assume any responsibility.

Note: The use of empty pins or wires is prohibited.

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Definition of Cable

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data collector

purpose

realizationPCThe connection between the machine and the absolute grating ruler can be conveniently achievedPCRead the position information of the absolute grating ruler on the machine.

Interface

USBInterface

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