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CET Electric Technology
Appendix H - FAQ
1.
The Fault LED indicator is blinking after power on
Is the Branch Cable securely connected to both the CT Strips and the PMC-592 Base Unit? If not,
please fix the connection.
Is the number of CT Strips connected consistent with configuration? For example, the default
number of SM is 84 (4 CT Strips), but only two CT Strips are connected. Please follow the steps
below to check the configuration:
1)
Open Web interface, please refer to Section
3.2.3 Accessing PMC-592’s Web Interface
.
2)
Choose
Diagnostics > About
and check the
Max Branch CT Number.
Please make sure that
the
Max. Branch CT number
matches the number of CT Strips connected.
3)
The position of the connected CT Strips is incorrect. Only Firmware V1.00.03 or above
supports arbitrary CT Strip connection. Please check the PMC-592’s firmware version to
make sure that the CT strips are connected in order from A, B, C and D, especially for
Firmware V1.00.02 or earlier.
2.
The kW reading of a SM displays negative value
Please make sure that the Current flow matches correctly with the Current direction as indicated
by the arrow of the CT, the
CT Polarity
is programmed correctly, or the Branch Circuit is correctly
paired with the Voltage phase. Please also check to make sure that the
Installation Mode
and
Installation Direction
are correctly programmed according to the actual installation.
1)
Open Web interface, please refer to
Section 3.2.3 Accessing PMC-592’s Web Interface
.
2)
Choose
Setup > Branch Setup
and related configuration, make sure all configuration are correct.