ABB REG650 Commissioning Manual page 134

Section 8
Troubleshooting
126
activated output signal is indicated with a yellow-lit diode. Each BOn_PO
is represented by two signals. The first signal in LHMI is the actual value
1 or 0 of the output, and in PCM600 a lit or dimmed diode. The second
signal is the status Normal or Forced. Forced status is only achieved when
the BO is set to Forced or operated on the LHMI.
An initially high contact resistance does not cause problems as it is reduced quickly by
the electrical cleaning effect of fritting and thermal destruction of layers, bringing the
contact resistance back to the mOhm range. As a result, practically the full voltage is
available at the load.
Set the parameter TestMode to Off after completing these
tests. The Start LED stops flashing when the relay is no
longer in test mode.
1MRK 502 049-UEN A
Commissioning manual