Wiring; Cable With Connector; Cable Without Connector; Connecting The Sense Line - Balluff BML-S1A-Q/A-M-0-S184/KA Serie Manual De Instrucciones

BML-S1A_-Q/A_ _ _-M_ _ _-_0-S184/KA_ _
Linear Position Encoder
5

Wiring

Note the following when making
electrical connections:
The system and the control
cabinet must be at the
same ground potential.
To ensure EMC, which Balluff
confirms with the CE Marking, the
following instructions must be
followed.
The cable shield must be
grounded on the controller side,
i.e., connect to the protection
ground.
5.1

Cable with connector

View of female side of
connector
BKS-S184-PU-_ _
Signal
Pin Cable digital
1 WH white A
2 BN brown /A
3 GN green B
4 YE yellow /B
5 GY gray Z (Ref. signal)
6 PK pink /Z (/Ref. signal)
7 BU blue GND
8 RD red +5 V
BK black Shield
Calculating the voltage drop in the line
The supply voltage must be 5 V ±5%. The power supply must ensure this
voltage and also compensate for the voltage drop in the line.
Use the following formula to calculate the voltage drop in the line:
U = R x l x [n x 3.1/R
line l st
U = Voltage drop in the line in Volt
line
R = 0.23 for the cable version BML-...-KA_ _ and
l
parallel wiring of the Sense lines with the supply lines (Fig. 5-2)
0.26 for cable with integrated connector BKS-S184-PU
l = Cable length in m
n = 3, if the reference pulse is processed in the controller
2, if the reference pulse is not processed in the controller
R = Input impedance of the controller in Ohm
st
The connection on the sensor side
depends on the configuration.
For enhanced EMC requirements
(e.g., commutator of an electric
motor), isolate the sensing head
from the machine (Fig. 4-1).
When routing the cable between
the transducer, controller and
power supply avoid proximity to
high-voltage lines due to noise
coupling.
Especially critical are stray
coupling caused by AC harmonics
(e.g., from phase controls), against
which the cable shield offers little
protection.
5.2

Cable without connector

12-conductor cable with Sense line
(measurement line) for preventing
voltage drop in the incoming line.
Cable
analog
WH white
A (sin)
BN brown
/A (–sin)
GN green
B (cos)
YE yellow
/B(–cos)
GY gray
PK pink
BU blue
RD red
BK black
VT violet
GYPK gray/pink Front limit switch
RDBU red/blue Rear limit switch
TR transp.
BK* black
*Discontinued model
+ 0.03] where:
Cable length max. 20 m;
conductor cross-section min.
0.14 mm
cables may be used if their
construction, shielding and routing
resist external noise fields.
Important:
In spite of a voltage drop in the
line a nominal operating voltage of
5 V ±5% must be ensured (see
Section 5.3).
5.3
To avoid a voltage drop in the line a
regulated power supply with Sense
input should be used (Fig. 5-1). If
that is not possible or desired, the
Signal
Sense lines in the 12-conductor
digital analog
cable should be connected parallel
to the +5 V and GND line (Fig. 5-2).
A A (sin)
/A /A (–sin)
B B (cos)
/B /B(–cos)
Z (Ref. signal)
Power
supply
/Z (/Ref. signal)
GND
+5 V
Fig. 5-1: Power supply with
Sense line
GND Sense
+5 V Sense
Power
supply
Shield 0.25 mm 2
2
Shield 0.35 mm
Fig. 5-2: Power supply without
Sense line
Sample calculation
Under the following conditions:
BKS-S184-PU-05 cable length 5 m
Reference pulse is evaluated
Control input impedance = 120 Ω
Resulting voltage drop is:
U = 0.26 x 5 x [3 x 3.1/120 + 0.03] = 0.1 V
line
2 , max. 0.5 mm 2 . Longer

Connecting the Sense line

english
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