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WS7.0-30000-1 Datasheet(PDF) 4 Page - ASM GmbH |
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WS7.0-30000-1 Datasheet(HTML) 4 Page - ASM GmbH |
4 / 6 page ASM CAT-POS-E-2001 89 WS Position Sensors Output Specification TSSI The sensing device of the SSI is a 24-bit absolute multiturn encoder. The position information is given by an analog/digital converter output serialized as a data word. The processing unit (PLC, Microcomputer) sends pulse sequences which clocks the data transmission at the required transfer rate. With the first falling edge of the pulse sequence the position of the sensor is recorded and stored. The following rising edges control the bit-by-bit transmission of the data word. After a delay time the next new position information Note: Extension of the cable length will reduce the maximum transmission rate. The signals CLOCK/CLOCK and DATA/DATA must be connected in a twisted pair cable, shielded per pair and common. Description Signal Conditioner TSSI Absolute Encoder synchronous serial Output EIA RS-422, RS-485, short-circuit proof Excitation Voltage 10 ... 30 V DC, reverse polarity protected Excitation Current 250 mA max. without load Clock Frequency 100 kHz ... 1 MHz Code Gray, continuous progression Format Tannenbaum Delay between Pulse Trains 12 to 35 µs Stability (Temperature) ±0.002% / K Full Scale (sensor mechanism) Operation Temperature -20 ... +85 °C Immunity to Interference (EMC) According to EN50082-2, EN50081-1 Recommended Processing Input Circuit Sensor Circuit Cable Subsequent Circuit Cable Length Baud Rate 50 m 100 … 1000 kHz 100 m 100 … 300 kHz · 4096 counts per revolution (12 bit), 4096 revolutions (12 bit) · No Loss of Data at Power-down · Easy to Connect to PLC’s with SSI Input Circuit Signal Wiring / Connection (*) WS7.2 only Signal Name Cable Output (*) Connector Pin Excitation + white 7 Excitation GND (0V) brown 10 CLOCK green 8 CLOCK yellow 9 DATA grey 14 DATA pink 17 Data Format (Train of 26 pulses) |
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