Huawei UPS5000-A-500 kVA User Manual page 95

UPS5000-A-500 kVA
User Manual (e-shelter)
Item
RS485 Stop
bit
Batt. temp.
sensors
Start addr.
of batt.
temp.
sensor
BMUs
Figure 4-15 Communication screen 3
Item
BMU start
address
Amb. temp &
humid
sensors/Start
addr. of amb.
temp. & hum.
sensors
NTC
Issue 02 (2020-01-10)
Description
Stop bit in the Modbus communication frame format. When the UPS is
connected over the serial port Modbus, set this parameter based on the
frame format that the upstream device Modbus supports. The value can be
set to 1 or 2. The default value is 1.
A maximum of four battery temperature sensors can be cascaded. The
default value is 0.
Set this parameter by using the DIP switch on the battery temperature
sensor. The address range is 16–28. Ensure that the address set on the LCD
is the same as that set for the DIP switch. Otherwise, communication fails.
A maximum of 12 BMUs can be cascaded. The default value is 0.
Description
Use the DIP switch on the BMU to set the BMU start address to 112.
Ensure that the address set on the LCD is the same as that set for the
DIP switch. Otherwise, communication cannot be implemented.
An ambient temperature and humidity sensor has the same appearance
as a battery temperature sensor. The two types of sensors can be
cascaded (up to four). The ambient temperature and humidity sensor
address range is 32–44, which is different from the battery temperature
sensor. Therefore, you can use the sensor as an ambient temperature
and humidity sensor or battery temperature sensor by setting the
address.
The short-distance battery temperature sensor monitors the ambient
temperature near batteries, and ensures that batteries work reliably and
securely. The default status is Disable. If a short-distance battery
temperature sensor is configured, set NTC to Enable.
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