76(96)
2.3 Main Electrical Components
2.3.1 Thermal Overload Relay
At delivery, the overload relay is set for manual reset (the reset button pointing
to H). Manually reset the relay at the tripping off of the switch. When motor
overload occurs, stop the machine. Check and solve the problem first. Then
open the door of control box, press down the reset button of overload relay. (If
you can not press down the reset button, wait for one more minute)
①
②
③
④
⑤
⑥
⑦
Picture 2-37: Thermal Overlaod Relay
Description of Thermal Overlaod Relay:
1) Terminal for contact coil A2.
2) Setting current adjusting scale.
3) Reset (blue).
H: manual reset
A: automatic reset
4) Switch position indication (green).
5) Test button (red).
6) Auxiliary contact terminals shown in 95,96,97,98.
NC and NO contacts are shown in position 95, 96 and 97, 98 respectively.
Tripping off of a manual-resetting is indicated by a pin projecting at the front
plate.
7) Main circuit connection No. must correspond with terminal number of
contactor.
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