Huawei ECC800 User Manual page 181

ECC800 Data Center Controller
User Manual
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Figure 7-1 Designing a PLC logic diagram
Procedure
Step 1 Log in to the ECC800 WebUI as an administrator.
Step 2 Choose System Settings > PLC.
Step 3 Ensure that Enable PLC function is set to Yes.
Step 4 Compile the first logic program line. Set the following condition for starting fans: The
temperature sensor probe detects an equipment room temperature above 27° C. Then, add the
calculation result to register 1.
1.
2.
3.
4.
5.
6.
Step 5 Compile the second logic program line. Set scenario 1 in which fans turn on: The ECC800
detects that its communication with the smart cooling product is abnormal and the equipment
room temperature is above 27° C. Then, add the calculation result to register 2.
1.
2.
3.
4.
5.
6.
Step 6 Compile the third logic program line. Set scenario 2 in which fans turn on: The ECC800
detects that the smart cooling product cannot provide cooling properly and the equipment
room temperature is above 27° C. Then, add the calculation result to register 3.
1.
Issue 02 (2019-02-28)
This section describes how to set the PLC linkage function to turn on emergency fans
(connected to the DO ports on the ECC800) when the temperature sensor probe
(connected to port AI/DI_2 on the ECC800) detects an equipment room temperature
above 27° C and an abnormal smart cooling product status.
Click Add.
Select Signal, ECC800, Sample, and AI/DI_2 sensor temperature value for Input 1.
Select > for Logic and set Hysteresis to 3.0.
Select Constant and 27 for Input 2.
Select Register and Register1 for Output.
Click Submit.
Click Add.
Select Signal, Air Conditioner, Sample, and ACC communication status for Input 1.
Select AND for Logic.
Select Register and Register1 for Input 2.
Select Register and Register2 for Output.
Click Submit.
Click Add.
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7 Feature Description
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