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Vol. 2.6 © 2020 Hanbell Precise Machinery Co., Ltd. All rights reserved
Figure 5.7 INT69HBY & PTC thermostats connection diagram
Phase loss and phase sequence
1. The phase monitoring of phase loss & phase sequence works after the motor starts 1
second (power on L1-L2-L3), and lasts 10 seconds (t
0
+ 1sec to t
0
+ 11sec)
2. If one of these parameters is incorrect, the relay locks out (M1-M2 is open).
3. The lockout can be cancelled by main reset of approx. 5 seconds (disconnect L-N)
Note: In order to make sure phase loss and phase sequence protection function well,
please connect L1, L2, and L3 to the motor side as Figure5.6 shown.
