Monitoring The Change-Over Of The Relays - SMA PPM-RC-10 Instrucciones De Funcionamiento

9 Maintenance
• Sand the affected area.
• Clean the affected area with degreaser.
• Paint the affected area.
7. Check whether all seals on the cabinet door are undamaged.
8. If a seal is damaged, contact Service.
9. Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.
9.2

Monitoring the Change-Over of the Relays

The change-over between the active and the redundant system controller must be checked every 12 months. To do this,
trigger this change-over manually by using the integrated user interface (see installation manual of the
Power Plant Manager). Parallel to the change-over between the active and the redundant system controller, the
change-over of the relays at the Redundancy Connector must be monitored.
Figure 10 : Indicator light at the relays for digital outputs
Procedure:
1. Note the current status of the indicator lights at the relays for digital outputs: indicator light is on or indicator light
is off.
2. To do this, trigger this change-over between the active and redundant system control manually by using the
integrated user interface (see installation manual of the Power Plant Manager).
3. After a successful change-over, check if the relay for digital outputs changed at each indicator light.
4. To do this, trigger this change-over between the active and redundant system control again by using the
integrated user interface (see installation manual of the Power Plant Manager).
5. After a successful change-over, check again if the relay for digital outputs changed at each indicator light.
6. If the status of a indicator light has not changed during a change-over, contact Service.
28 PPM-RC-10-BE-xx-10
SMA Solar Technology AG
Operating manual