Blocking cooling stage based on outside air temperature limits
This function allows to enable DX cooling stages based on outside air temperatures.
When the user configures three binary stages:
- The output "Stage1Cmd" is enabled if the outside air temperature is above the cooling limit, which is transmitted via the input "OATLimitCooling", with a switching differential of 2 K
- "Stage2Cmd" will be released if the outside air temperature is higher than "OATLimitCooling" + OAT-01, with a switching differential of 2 K
- "Stage3Cmd" will be released if the outside air temperature is higher than "OATLimitCooling" + OAT-01 + OAT-02, with a switching differential of 2 K
When more than three (n) stages are configured
- The output "Stage1Cmd" is enabled if the outside air temperature is above the cooling limit, which is transmitted via the input "OATLimitCooling", with a switching differential of 2 K
- "Stage2Cmd" will be released if the outside air temperature is higher than "OATLimitCooling" + OAT-01, with a switching differential of 2 K
- "Stage3Cmd" will be released if the outside air temperature is higher than "OATLimitCooling" + OAT-01 + OAT-02, with a switching differential of 2 K
- ......
- "Stage_n" will be released if the outside air temperature is higher than "OATLimitCooling" + (n-2) *OAT-01 + OAT-02, with a switching differential of 2 K
The display values DISP-02: Requested stages and DISP-03: Actual stages, will show only the stages allowed by the outside air temperature limits.
Description
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Default value
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OAT-01: OAT temp. difference to start the next stages
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4 K
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OAT-02. OAT temp. difference to start the last stage
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4 K
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