Chapter 5 Power Activation and Operational Tests
PAGE 5-3
5-2. Items to be Checked When Activating the Equipment
Confirm that the indications on the indicator change as follows when the control power is activated.
If “ABN” is indicated at the upper stage of the indicator when the power is activated, please refer to
“Description/Cause of Abnormal State and Recovery Method” to eliminate the cause, ensure safety,
and then reactivate the control power.
Also, check the following safety precautions when activating the power.
<Safety Precautions in Reactivating the Power>
If the power is to be reactivated, be sure to wait for a waiting time (recommended: 1 minute)
after the power has been turned OFF and then turn ON the power. The following problems
may occur if there is no waiting time or if reactivation is performed in a short time.
･An abnormal current may flow to the primary power source circuit without operation of the rush
current prevent circuit and the circuit protector which protects the circuit may therefore be put
in an interrupted state.
･The Controller power source circuit may detect an error and automatically interrupt the circuit.
As a result, the power source circuit will not operate (remains OFF) even when the power is
reactivated.
If the power cannot be reactivated, be sure to wait for 5 minutes or more after turning OFF the
power and then turn ON the power.
All segments are lit for
approx. 3 seconds
S0140185-H
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