Siko MSA511 User Information page 10

Changing the angle position:
1. Slightly unscrew screw (6).
2. Remove cap (10) and distance sleeve (9).
3. Adjust the contacts (7) and the shell (8) to the
desired angular position (in 90° steps).
4. Mount distance sleeve, cap and screw.
5. Commissioning
After mounting tape and sensor and after correct
wiring, the system is ready for use. Alignment of
sensor and tape is carried out by the manufacturer
before the material leaves the factory.
5.1 Sensor programming
Certain parameters of sensor MSA511 are program-
mable via its RS485 interface and are non volatile,
but can nevertheless be modified at any time.
If interface RS485 is not used, signals DÜA and
DÜB should be connected to GND to avoid inter-
ference.
Please proceed as follows:
Use a level converter (eg. type I-7520 from Spec-
tra company) to establish a connection between
your PC's serial RS232 interface and the sensor's
RS485 interface.
Switch on the sensor's power supply and start with
programming by:
• using a suitable terminal program (eg. sikoterm.
exe) and by manually entering your commands
accord. to the table "list of commands – service
operation of MSA511" (see chapter 7). Please
remember that your terminal has to be adjusted to
the pre-programmed interface parameters.
Please ask SIKO for software "sikoterm.exe" or
download it from our website - address:
http://www.siko.de/download
10 MSA511+MBA511
5.2 Application examples for sensor programming
and display of the position value
Fig. 9: Programming of SIKO display MA10/3 SSI:
Data format: no; encoder bits: 24; singleturnbits:
irrelevant; output code: Gray
Programming of SIKO display MA10/4 SSI: encoder
type: linear; encoder bits: 24; factor: 1.0 (1/100mm
display); output code: Gray
5.3 Sensor's SSI-interface
MSA511's SSI-interface allows a synchronuous
output of the position value. Its data format com-
prises a width of 24 bit which are either issued as
Gray codes (see chapter 7) and right-aligned. All
following bits (25, 26...) are issued as "0".
Data signals correspond to RS422. Cycle inputs are
opto-decoupled and also correspond to RS422. Ty-
pical SSI monoflop time is. 20...25µs which gives
a min. cycle rate of 62,5kHz.
Cable length 2m
Cable length 10m
Cable length 100m
Cable length 200m
Please note that the possible max. cycle rate and
data integrity mainly depend on the length of the
connection line.
If the integral SSI-interface is not used, SSI input
signals cycle+ and cycle- should be connected to
GND to avoid interference.
5.4 Sinus-/Cosinus Output
MSA511 has a sinus and cosinus output:
cycle duration
amplitude
d.c. voltage component
impedance
5.5 Zero-Setting
There are three possibilities for zeroing the sen-
sor:
1.
2.
3.
Datum 15.02.2010
+24V/GND
power pack:
MSA511
24VDC/
500mA
level converter
PC RS232
RS232 <-> RS485
RXD/TXD/GND
: max. cycle rate 1MHz
: max. cycle rate 800kHz
: max. cycle rate 250kHz
: max. cycle rate 125kHz
Zeroing input (see chapter 4.1) can be activated
with +24 VDC (for more than 2 seconds).
By interface command "I" (see chapter 7).
By using a zero-setting screw, e.g. a cylinder
Art.Nr. 81105
cycle+/cycle-/
data+/data-
eg. MA10/3
SSI
RS485
DÜA/DÜB/GND
: 5mm
: 1Vss
: 2,5V
: 100Ω
Änd. Stand 48/10