8
Maintenance
8.1
Checking the device function
Analog sensors
To verify the proper operation of the device, perform the following checks:
•
Connections and pin assignments
•
Supply voltage
•
Check the device by disconnecting it and testing it using an external supply
•
Check the device using a multimeter as described below
Measuring the VDC output signal
The following output signals can be measured:
•
0.25 ... 4.75 VDC
•
0.5 ... 4.5 VDC
•
0.5 ... 9.5 VDC
+
_
VDC
Figure 19: Measuring the output signal in VDC
1.
Switch the measuring range of the multimeter to VDC.
2.
Connect the multimeter to the signal lead and 0 V lead.
3.
Connect the voltage supply (+12/24 V).
4.
Connect 0 V (-0 V).
Measuring the 4 ... 20 mA output signal
+
_
mA
Figure 20: Measuring the output signal in mA
1.
Switch the measuring range of the multimeter to mA.
2.
Connect the multimeter to the signal lead and 0 V lead.
3.
Connect the voltage supply (+12/24 V).
4.
Connect 0 V (-0 V).
Alternative measuring method: using a resistor (e. g., 100
W
):
MAINTENANCE
8
8021473/2017-08-08 | SICK
T E C H N I C A L I N F O R M A T I O N | MAX48
27
Subject to change without notice
