9-29
IM 704420-01E
Troubleshooting and Maintenance
9
9.8
Circuit Breaker
CAUTION
When the circuit breaker trips and shuts off the power, a problem may have
occurred in the internal circuit. If the reset button does not return to the original
position, do not reset it numerous times. Instead, contact your nearest
YOKOGAWA dealer as listed on the back cover of this manual.
Position of the circuit breaker
Instead of a power fuse, a circuit breaker that protects the internal circuit is provided
on the rear panel. For the position of the circuit breaker, see section 2.2.
Circuit breaker operation
If the TA120E becomes overloaded and over current flows through the internal
circuits, the power is shut off. When the power is shut off, the reset button pops out
(see figure below) and the white indicator section becomes exposed.
White indicator section
Reset button of the
circuit breaker
Resetting the circuit breaker
If the circuit breaker trips and shuts off the power, you can recover the original
condition by pressing in the reset button after waiting at least one minute. However, if
the overloaded condition continues, the trip-free mechanism is enabled and the reset
button does not return to the original position.
