Siemens 6RA7086-6KS22

05.05 Connections
Siemens AG 6RX1700-0AD76 6-65
SIMOREG DC Master Operating Instructions
Pulse encoder input (see also Section 8, sheet G145)
Module C98043-A7001 (CUD1)
Function Terminal
X173
Connection values/Remarks
Supply (+13,7V to+15,2V) 26 200mA; short-circuit-proof (electronic protection)
Overload response: Fault message F018
Warning signal A018
Ground pulse encoder M 27
Track 1 Positive terminal
Negative terminal
28
29
Load: ≤5.25mA at 15V
(w/o switching losses, see below for cable, cable length,
shield connection)
Track 2 Positive terminal
Negative terminal
30
31
Switching hysteresis: See below
Pulse/pause ratio: 1:1
Zero marker Positive terminal
Negative terminal
32
33
Level of input pulses: See below
Track offset: Table 1 see below
Pulse frequency: Table 2 see below
Cable length: See below
Characteristic data of pulse tacho evaluation electronics
Level of input pulses:
Encoder signals (symmetrical and asymmetrical) up to a max. 27V differential voltage can be processed by
the evaluated electronics.
Electronic adaptation of evaluation electronics to signal voltage of encoder:
– Rated input voltage range
5V P142=0:
Low level: Differential voltage <0.8V
High level: Differential voltage >2.0V
Hysteresis: >0.2V
Common-mode control range: ±10V
– Rated input voltage range
15V P142=1:
Low level: Differential voltage <5.0V
High level: Differential voltage >8.0V Restriction: See switching frequency
Hysteresis: >1V
Common-mode control range: ±10V
If the pulse encoder does not supply symmetrical encoder signals, then its ground must be routed as a
twisted-pair
lead with every signal cable and connected to the negative terminals of track 1, track 2 and the
zero marker.
Switching frequency:
The maximum frequency of the encoder pulses is 300kHz. To ensure correct evaluation of the encoder
pulses, the minimum distance T
min
between two encoder signal edges (tracks 1 and 2) specified in the table
must be observed:
Table 1:
Rated input voltage 5V Rated input voltage 15V
Differential voltage
1)
2V >2.5V 8V 10V >14V
T
min
2)
630ns 380ns 630ns 430ns 380ns
1) Differential voltage at terminals of evaluation electronics
2) The phase error L
G
(deviating from 90°), which may occur as the result of encoder and cable, can be
calculated from T
min
:
L
G
= ± (90° – f
p
*
T
min
*
360°)
L
G
= phase error
f
p
= pulse frequency
T
min
= minimum distance between edges
This formula applies only if the encoder pulse ratio is 1:1.