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Subject: Relay controlling electric doorstrike - kickback protection needed?
Date: Fri, 04 Oct 2002 00:13:32 GMT
NNTP-Posting-Date: Thu, 03 Oct 2002 20:13:32 EDT
Organization: Cox Communications
I'm looking into control an electric doorstrike using a device made by a
company called B&B Electronics called the 232DRIO:
According to the website (and the PDF manual there), this device has two
relay outputs, so I am thinking of using the relay to close the loop
between a 16VAC transformer and the doorstrike. Here's the page on the
doorstrike and transformer:
I spoke to (supposedly) and engineer at B&B today, and was asking if the
232DRIO is used with something like a doorstrike (i.e., an
electro-mechanical device), whether I needed to add anything to protect
the relay against kickback, or whether the 232DRIO has protection
already built in. She couldn't tell me, so I asked if she could tell me
specifically which relay(s) were used in the device so I could look up
the specs myself.
Unfortunately, I don't think the person I spoke to knew much, as she
kept telling me that there was no relay on the board, and that the relay
was "on the chip" (presumably the microcontroller) [Note that the
232DRIO is spec'ed to handle 120VAC].
I was wondering if anyone has had any experience with the 232DRIO? If
so, can you provide info about which relay is used?
If not, I was wondering, in general, if I should add any additional
circuitry between the relay and the doorstrike to protect the relay?
Thanks in advance!