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QUICKSTART
5.3
Select a suitable fuse
5.4
Set up the filter wiring - analog
5.5
Power-up and output signal in the event of a fault
22
Q U I C K S T A R T | MAX®
When selecting a suitable fuse, the transient peak current when switching on the
device for the time must be taken into consideration:
Inrush current when switching the device on
Inrush current for an supply voltage of 12 VDC
Inrush current for an supply voltage of 24 VDC
To reduce the noise when acquiring analog measurement data, it is essential to use a
filter.
A suitable filter, for example, is a combination of R1 = 50 Ω and C1 = 100 nF to 1 µF.
This will keep the signal delay time within the cycle time (internal measurement fre‐
quency) while not changing the dynamic behavior significantly.
VDC
+
R1
SIG
GND
GND
Figure 6: Filter wiring
NOTICE
The A/D converter at the input of the installed electrical controller will determine the
resolution of the encoder, e.g.,:
•
8 bit = 256 steps
•
10 bit = 1,024 steps
•
12 bit = 4,096 steps
When switching on the device, the signal output is ≥ F.S.O = Full Scale Output. After that
the device is ready for use.
Operational statuses and output signal
F.S.O
4.00 ... 20.00 mA
0.50 ... 4.50 V
0.25 ... 4.50 V
0.50 ... 9.50 V
PWM (duty cycle)
Digital: CANopen / SAE J1939
Fault:
a)
Position magnet missing
b)
Position magnet in null or cushion zone
c)
Malfunction or failure of the magnetostrictive element
2.5 A / 50 μsec typical
5.0 A / 50 μsec typical
ECU
Input
A/D converter
e.g., 12 bit →
4,096 steps
GND
GND
Output signal
during power-up
Unusable signal
Boot message
in the event of a fault
> 21.0 mA
> 5.1 V
> 5.1 V
> 10.0 V
≥ 99%
Error message "FFFF"
8021471/19KX/2021-03-08 | SICK
Subject to change without notice
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