Siemens 6RA7086-6KS22 Operating Instructions Manual page 152

Connections
If the pulse encoder is incorrectly matched to the encoder cable, disturbing cable reflections will be produced
at the receive end. These reflections must be damped so that the encoder pulses can be correctly evaluated.
The limit values listed in the table below must be maintained to ensure that the resultant power loss in the
adapting element of the evaluation electronics is not exceeded.
Table 2:
f
max
Differential voltage 3)
3 Differential voltage of encoder pulses at no load
)
(approximate encoder power supply voltage)
Cable, cable length, shield connection:
The encoder cable capacitance must be recharged at each encoder edge change. The RMS value of this
current is proportional to the cable length and the pulse frequency and must exceed the current specified by
the encoder manufacturer. A suitable cable as recommended by the encoder manufacturer must be used.
The maximum cable length must not be exceeded. Generally, a twisted cable pair with common pair shield is
sufficient for each track. Crosstalk between the cables is thus reduced. The shielding of all pairs protects
against noise pulses. The shield must be connected to the shield bar of the SIMOREG converter over the
largest possible surface area.
Temperature sensor inputs (motor interface 1) (see also Section 8, sheet G185)
Module C98043-A7001 (CUD1)
Function
Motor temperature
Connection of the temperature
sensor
Ground analog M
Analog outputs (see also Section 8, sheet G115)
Module C98043-A7001 (CUD1)
Function
Actual current
Ground analog M
Select output
Ground analog M
Select output
Ground analog M
6-66
50kHz
Up to 27V
Terminal
X174
22
23
24
Terminal
X175
12
13
analog 1 14
15
analog 2 16
17
100kHz 150kHz
Up to 22V Up to 18V
Connection values/Remarks
Sensor acc. to P490 index 1
The cable to the temperature sensor on the motor must
be shielded and connected to ground at both ends.
Connection values/Remarks
0 . . . ±10V corresponds to 0 . . . ±200%
Converter rated DC current (r072.002)
Max. load 2mA, short-circuit-proof
0 . . . ±10V, max. 2mA
short-circuit-proof
Resolution ±11bits
200kHz 300kHz
Up to 16V Up to 14V
Siemens AG
SIMOREG DC Master Operating Instructions
05.05
6RX1700-0AD76