Siemens SIMATIC S5 - Technical Specifications

Matching Module 1 for Absolute Encoders
R 02/92
Instructions for Conditioning the Input Circuitry
– In the encoder impedance range from 6 kS2 to 10 kQ wire jumpers can be inserted for
RI 03/Rl 04/Rl 05,
– Below 6 kQ encoder impedance, the resistor networks must be computed.
– The high level at
R106 or R107 must be between 3 V and 5 V.
– The low level at
R106 or R107 must be below or equal to 0.8 V.
+ 24 V
? R103 (R104IR1O5)
! U 2 min = 3V
RI06 (R107)
M
: U 2 max = 5 V
R = R2 X (U – U2)
U2
– R–Encoder
Explanation:
R
=
R2
=
U2
=
u
R–Encoder :
R103, R104, R105
R106, 107(1,5 kQ)
Voltage at R106, R107 (min. 3 V, max. 5 V)
Encoder voltage (24 V)
Encoder impedance (see manufacturer’s label or encoder data sheet)
How to proceed:
a) Compute the value R max. with U2 minimum (3 V).
b) Compute the value R min. with U2 maximum (5 V).
c) Select the resistor network according to the E series (between R maximum and R minimum).
I d) Onlvresistor neWorksconsistin~ ofsincle resistors may be used. u]
“ See technical specifications, se~tion 8.6.
4–4
1P 241 Equipment Manual
@ SiemeflS AG 1969, Order No.: 6ES5 998-0KD21
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