Motrona SI 251 Operating Instructions Manual Download Page 15 | Manualshive

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SI25101B_e.DOC / Mrz-08

Page 15 / 16

9.

Dimensions

40 mm (1.575’’)

79

m

m

(3

.1

10

’’)

74 mm (2.193’’)

91mm (3.583’’)

Front view

Side view

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Summary of Contents for SI 251

Page 1: ...ls Outputs A A B B Z Z RS422 TTL and A B Z 80 30 V HTL Adjustable multiplier for interpolation rates from 1 5 to 1 50 Adjustable divider 1 1 1 128 to reduce the output frequency Sinus input frequency...

Page 2: ...untry specific and application specific safety standards When this unit is used with applications where failure or maloperation could cause damage to a machine or hazard to the operating staff it is i...

Page 3: ...4 2 Block Diagram 5 3 Connections 6 4 Pin assignment of SUB D connectors 8 4 1 Sine Cosine inputs 8 4 2 RS 422 impulse output 9 5 Switch settings 10 6 Frequency Divider and Error Signals 13 7 Delays...

Page 4: ...to 50 i e the unit can generate up to 50 pulses from one sine period The maximum output frequency is 4 MHz with use of the RS422 output and approx 100 kHz when the HTL output is used Where applicable...

Page 5: ...SI25101B_e DOC Mrz 08 Page 5 16 2 Block Diagram A B Z A B Z SIN COS COS REF SIN REF 3 2 8 Vdd 20 V 150 mA Vcc 5 2V 150 mA 1 Encoder Supply A 10 11 9 12 B Z Jumper 5 6 GND Power A B B Z A Z...

Page 6: ...available with RS422 standard and HTL standard push pull at the same time and one output of both or both outputs at a time may be used quite according to the application All inputs and outputs as well...

Page 7: ...itch 2 Configuration B HTL Z HTL GND LED s At any time the over all transmission characteristics of encoder external components and capacity of cable must ensure proper signals at the input of the uni...

Page 8: ...he inverted signal of each channel may be of advantage COS SIN SIN GND REF REF COS 1 2 3 4 5 9 8 6 7 Vm Encoder supply from terminal 1 SIN SIN COS COS REF REF 3 2 1 9 7 6 GND GND With sensors using si...

Page 9: ...pin open the unit will not generate a Z impulse The sine cosine signals on the input site are highly sensitive analogue signals Therefore it is mandatory to use proper screening Use of cables with pa...

Page 10: ...est mode Changes of the DIL switch positions will become active only after the next power up of the unit DIL1 0 OFF 1 ON Interpolation and Filtering 8 7 6 5 4 3 2 1 1 1 Minimum Filter 1 0 Filter 10kHz...

Page 11: ...ult in fluctuation of the output frequency Use of the glitch filter results in increased interpolation times at standstill or with low input frequencies therefore reduces noise and jitter of the outpu...

Page 12: ...12 5 kHz 25 ns 4 MHz 200 kHz 100 ns 2 5 MHz 125 kHz 400 ns 625 kHz 31 25 kHz x20 1600 ns 156 25 kHz 7 8125 kHz 25 ns 4 MHz 160 kHz 100 ns 2 5 MHz 100 kHz 400 ns 625 kHz 25 kHz x25 1600 ns 156 25 kHz 6...

Page 13: ...als REF and REF are not subject of the error check procedure Depending on the settings on the DIL2 switch error signals remain active until remote acknowledgement or reset automatically upon eliminati...

Page 14: ...quency should not exceed about 50 of the normal maximum frequency The application of digital interpolation procedures requires use of quantization steps which can cause a certain dither of the output...

Page 15: ...SI25101B_e DOC Mrz 08 Page 15 16 9 Dimensions 40 mm 1 575 79 mm 3 110 74 mm 2 193 91mm 3 583 Front view Side view...

Page 16: ...Cosine Inputs min 0 8 Vpp max 1 2 Vpp DC Offset Sin Cos Inputs min 1 8V max 3 1V Differential Ref Input High 130mV Low 40mV Output voltage HTL Vdd 4V Output voltage HTL Error Vdd 4V Output current HTL...

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