Weidmüller 2661040000, Руководство пользователя

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32 2661740000/03/02-2021
Maintenance
Replacing clock battery
The real-time-clock (RTC) which maintains the time and date on the main screen footer is backed up with
an internal 3 V Lithium coin cell battery (CR2032). In order to replace this battery, the back cover of the
instrument must be removed.
To avoid electrical shock or personal injury, remove the DC charger plug and the test lead set
before replacing the internal clock battery. Be sure that the battery polarity is correct. A reversed
battery may damage the instrument.
To replace the RTC battery:
1. Turn off the instrument.
2. Remove the test lead set from the front terminals.
3. Remove the main battery cover locking screw if present using a small Philips screwdriver.
4. Press the release latch and remove the battery cover.
5. Remove an AA cell of the main battery.
6. Remove the six screws securing the back half of instrument enclosure to the front half. Carefully sepa-
rate the two halves avoiding placing any strain on the interconnecting wiring between the two halves.
7. The CR2032 coin battery is clearly evident on the main PCB in a small battery holder.
8. Taking careful note of the battery polarity, remove the depleted coin battery and replace with a fresh
one.
9. Reposition the two halves of the enclosure and replace the six screws avoiding over tightening.
10. Insert the main AA batteries by observing the marked polarities and replace the battery cover.
11. Secure the cover by replacing the locking Philips screw.
12. Restart the instrument in its
User Commissioning mode by depressing the TEST button on the front
panel at the same time the ON/OFF button is pressed (refer to Restoring factory defaults section).
13. Adjust the time and date (refer to Time/Date screen section).