CET Electric Technology
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PT Ratio × CT Ratio × Rated Phase Voltage Input × Rated Current Input x √3 must be less than 790,000,000.
5) Binary Input Objects (PMC-53A’s Digital Inputs)
Optional Properties Supported: Description, Reliability
Use the Present_Value properties of the Binary_Input objects as alerts for conditions of potential
concern regarding system measurements. These objects support the Description and Reliability
optional properties and all required Binary_Input object properties. None of them are writable.
6) Binary Output Objects (PMC-53A’s Digital Outputs)
Optional Properties Supported: Inactive_Text, Active_Text
Use the Present_Value property of the Binary_Output objects as alerts for DO conditions.
Reading Binary_Output objects have the highest priority. PMC-53A supports Inactive_Text,
Active_Text optional properties and all required Binary_Output object properties. Present_Value,
Out_Of_Service and Polarity properties can be written, but these are non-volatile after
modification. The Present_Value can only be written when the Out_Of_Service is true to change
the state of the Digital Output and will be written as W when the Out_Of_Service is false.
7) Additional Front Panel Setup Parameters for BACnet MS/TP
The following BACnet MS/TP setup parameters should be configured via the PMC-53A’s Front
Panel before connecting the PMC-53A to a BACnet MS/TP network.
1200/2400/4800/9600/19200/38400
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The MS/TP ID is similar to the Modbus unit ID conceptually
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The Object Identifier is similar to the IP address of an Ethernet network conceptually and is required to be
unique within the entire BACnet network