When a building chooses the option for emergency battery lowering on their elevator controller the electrician has one additional item to do, installation of an auxiliary contact on the disconnect. We have also run into the requirement of an auxiliary contact on the disconnect for emergency brake release.
What is the purpose of the auxiliary contact? The purpose of the auxiliary contact is so the elevator controller can tell the difference between a power down at the disconnect versus a power outage.
If
the electrician you are using is not familiar with this function, have them
call their electrical supply house and ask them. Depending on the make and model of the
disconnect the supply house can sell them what they require and it is a simple
modification to the disconnect.
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If you have any questions or would like additional information feel free to contact me at CraigZ@colleyelevator.com or 630-766-7230 ext. 107.
The auxiliary contact is to signal the emergency battery lowering when there is power outage, does it function the same way when a fire breaks out? (say if its triggered by the heat detector).
ReplyDeleteThank you.