111
8020216/19YN/V3-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-3K
Subject to change without notice
MAINTENANCE
12
12.8
MCU control unit maintenance work
12.8.1
Replacing the button cell in the control unit
Replacement criterion: As required.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Open the MCU with the control cabinet key.
3
Remove the old button cell. Insert new button cell
into the holder. Observe the
installation direction of the button cell. The circuit board is marked accordingly at this
point.
4
Put the complete device back into operation (switch on voltage and check measured and
status values, set date and time).
Fig. 64: Replacing the MCU button cell
12.8.2
Replacing the Interface module
Replacement criterion: In case of damage.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Open the MCU with the control cabinet key.
3
Loosen the connecting wires on the Interface module.
4
Use a screwdriver to unlock hat rail lock (
) of the power supply unit and remove the
module. Note how the ribbon cable is laid on the module.
5
Disconnect ribbon cable connector (
).
6
Connect ribbon cable connector (
) to the new Interface module.
7
Plug the new power supply unit onto the hat rail.
8
Connect the connecting wires to the new module.
9
Lock the MCU with the control cabinet key.
10
Put the complete device back into operation (switch on voltage and check measured and
status values).
Fig. 65: Replacing the MCU Interface module
Button cell of the
MCU control unit
Hat rail lock
Ribbon cable connector
