Er.04, Er.05, Er.06, Er.14: Self-Diagnostic Function - SanRex CALPOTE UG Series Instruction Manual

8.11

Er.04, Er.05, Er.06, Er.14: Self-diagnostic Function

The self-diagnostic function outputs warnings for the thyristor's open/short circuit and the
load's open/short circuit on the basis of internal speculation using values of the current
detected with the unit's built-in CT, the signal output from the thyristor, and the current and
voltage detected with a conversion board if used. It does not actually check if the thyristor and
loads are open or short-circuited. With this mechanism, this function may output false warnings
depending on the load type. You can forcibly clear false warnings by setting [F700: Self-
diagnosis stop] to [0: Suspend self-diagnosis].
Self-diagnosis targets differ according to the unit status.
Conversion board category A: UG-TB3, UG-TB3U, UG-TB3H, UG-TB3HU
Conversion board category B: When no conversion board or a model other than those listed
above is used
Er.05 Thyristor open
Thyristor short
Er.06
circuit
Er.04 Load short circuit
Er.14 Load open
※ A load open is detected even when the thyristor is open.
Conversion board category A
Operation in Operation
progress stopped
Diagnosis
target
Diagnosis Diagnosis
target target
Diagnosis
target
Diagnosis
target
57
Conversion board category B
Operation in
progress
– *
–
Diagnosis
–
target
Diagnosis
–
target
Operation
stopped
–
Diagnosis
target
–
–