Rs485 Expansion Card - Huawei ECC500 User Manual

ECC500
User Manual
Table 3-5 Performance specifications of the power module
Parameter
Operating voltage range
Rated operating voltage
Frequency
Rated output voltage
Structure

3.2.3 RS485 Expansion Card

The RS485 expansion card provides five half-duplex RS485 communications ports that are
compatible with two-wire and four-wire cables. The ports are used to connect the southbound
intelligent equipment, AI/DI module, and intelligent T/H sensor.
on the front panel of the RS485 expansion card.
Figure 3-4 Front panel of the RS485 expansion card
(1) COM1 port
(4) COM4/12V port
Table 3-6
Table 3-6 Description of indicators on the front panel of the RS485 expansion card
Silk Screen
PWR
RUN
Issue 03 (2020-01-06)
describes the indicators on the front panel of the RS485 expansion card.
Color Meaning
Green Power
indicator
Green Run indicator
Copyright © Huawei Technologies Co., Ltd.
Description
100–240 V AC
110 V AC/220 V AC
50 Hz/60 Hz
53.5 V DC/15 V DC
The subrack of the power module is less than 1 U high
and occupies two slots of the ECC500 subrack.
(2) COM2 port
(5) COM5/12V port
Status
Steady on
Off
Blinking (1 second
on and 1 second
off)
3 Configurations and Port
Figure 3-4 shows the ports
(3) COM3 port
(6) Indicators
Description
The power supply is
normal.
The RS485 expansion
card is faulty or has
no DC input.
The RS485 expansion
card is communicating
with the main control
module properly.
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