SMA PPM-10 - Redundant System Configuration

6 Electrical Connection
SMA Solar Technology AG
Installation Manual 53PPM-10-IA-en-16
6.9 Redundant System
6.9.1 Connecting a Redundant PowerPlantManager
Requirements for using the optional redundancy function:
☐ 2 Power Plant Managers must be installed.
☐ Both Power Platform Managers must be connected to the same communication network.
☐ Both Power Platform Managers must support the redundancy function.
☐ The ordered variants of both Power Plant Managers must be identical.
☐ Both PowerPlantManagers must have a valid license for redundant operation.
Circuitry diagram and terminal assignment:
X704 X704
PPM A
PPM B
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
Figure 24: Circuitry of PPMA and PPMB (without Redundancy Connector)
The following table shows the configuration of the inputs at terminal block X704 for the connection to the redundant
PowerPlantManager.
Terminal Input Function
X704:1 GND Reset signal, sent to the other Power Plant Manager (This multifunctional
input is used as the digital output in the event of redundancy.)
X704:2 DIO1
X704:3 GND Provided for connecting the Redundancy Connector (see Section6.9.2,
page54)
X704:4 DIO2
X704:5 24V
X704:6 DIO3
X704:7 24V
X704:8 DIO4
X704:9 24V external Reset signal received from the other PowerPlantManager
X704:10 GND external
Cable requirements:
☐ Conductor cross-section: 0.5mm² to 1.5mm² (16AWG to 20AWG)