Lift Application Design supporting car stop with one contactor
Figure 12 ADL300 Lift system reference design to use a single contactor onto the motor.
Figure 12 is a Lift reference design to be used to implement a Lift System according to EN81-1
12.7.3 b) using one contactor and safety integrated function instead of 2 contactors.
Requirements to comply to reference design and EN81 12.7.3 b) are:
1. SYSTEM CONTROL UNIT shall use both one contactor and ADL300 safety integrated function
as means to stop cabin.
2. SAFETY CONTROL UNIT will monitor both DRIVE OK and SAFETY OK relay.
3. ADL300 shall be enabled using both ENABLE and SAFETY ENABLE signals
4. Any time Motor comes to a stop SAFETY OK relay shall be monitored by SYSTEM CONTROL
UNIT. In case of unexpected SAFETY OK relay status is found SYSTEM CONTROL UNIT will
not issue a restart (K1, K2 remain open) until condition is cleared.