Huawei EMMA Pro

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Port Pin Function Description

12V_IN + 12 V power input+ Used only in the SmartGuard scenario

for the whole-house power backup.

The SmartGuard provides 12 V DC

power for the EMMA when the EMMA

is in oine mode.

- 12 V power input–

RS485 A1 RS485A, RS485

dierential signal+

Used to connect to the SmartGuard.

B1 RS485B, RS485

dierential signal–

CT Input IA* External CT input

phase A+

Used to connect to an external CT.

IA External CT input

phase A–

IB* External CT input

phase B+

IB External CT input

phase B–

IC* External CT input

phase C+

IC External CT input

phase C–

Procedure

Step 1 Prepare cord end terminals for AC power cables and determine whether to

prepare external CT cables as needed.

1. You are advised to prepare cord end terminals for AC power cables.

(1) Cord end terminal

(2) Crimping tool

2. (Optional) For the external CT connection, connect the external CT cables to

the 10-pin signal connector.

EMMA-(A01, A02)

User Manual 5 Electrical Connections

Huawei EMMA Pro - Page 37