5 Removing the Communication Assembly
SMA Solar Technology AG
Replacement Manual
STP50-40-COM-RM-xx-11
15
5
Removing the Communication Assembly
DC-
Connection Unit
COM
LED
A
Figure 2 : Position of the communication assembly
Position
Designation
A
AC switch, only included in STP50-US-40, STP-33-US-41, STP-50-US-41 and
STP-62-US-41
Procedure:
1. Disconnect the inverter from all voltage sources (see Section 4, page 13).
2. Release (TX25) all 10 screws of the enclosure lid of
the DC-Connection Unit and remove the enclosure
lid carefully towards the front.
10x
3. Discharge the DC Connection Unit at the contact points using a voltage detector without
intrinsic voltage source: Ensure that the residual voltage is less than 5 V.
ENGLISH
Summary of Contents for NR-PC-KP20L.BG1
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