Depends on the load and how you wire it. For smaller sites I've been known to use a small 24VDC fan for ventilation which consumes less than 1A, so I switch it directly with the relay.
If you get closer to the relay rating you should use an off board relay, and then you use the on board relay to control the power for the coil of the off board relay. The on board relay just carries enough current to power the coil which isn't that much except for very large relays. On Tue, Apr 10, 2018, 11:45 AM Paul McCall <[email protected]> wrote: > But, is the relay switching in the Packetflux bearing any of the load at > any point? I would think not, but the answers are a bit confusing, as > though it is. > > > > I would think most basic relays could be triggered successfully with much > less than 2A > > > > *From:* Af <[email protected]> *On Behalf Of *Forrest Christian (List > Account) > *Sent:* Tuesday, April 10, 2018 1:44 PM > *To:* af <[email protected]> > *Subject:* Re: [AFMUG] Sitemonitor Question with Relay > > > > The relay is rated for 2A@30V, and 60W above that. > > > > See https://www.mouser.com/datasheet/2/315/mech_eng_tx-1075670.pdf figure > 1 on page 3 for a visual of this. > > > > I'd recommend that you test the relay operation with an ohm meter before > trying a circuit. There should be conductivity between C and NC and none > between C and NO when the value is set to zero, and opposite that when > it's set to a one. > > > > If it doesn't work, upgrade the firmware to the latest and try again. > There have been a couple of relay bugs fixed in recent memory. Also make > sure that the relay on above and below rows are set to a very high and low > number since if that is enabled it will override the relay. > > > > On Tue, Apr 10, 2018, 11:22 AM Paul McCall <[email protected]> wrote: > > Yeah, I thought this would be the case, for some reason, Packetflux > support led my guy to realize that it didn’t work that way. > > > > SMH > > > > *From:* Af <[email protected]> *On Behalf Of *Bill Prince > *Sent:* Tuesday, April 10, 2018 12:38 PM > *To:* Motorola III <[email protected]> > *Subject:* Re: [AFMUG] Sitemonitor Question with Relay > > > > The typical solution with a light-duty relay is to use it to control a > heavier relay that carries the actual load. > > -bp > > > -- > > bp > > part15sbs{at}gmail{dot}com > > > > On Tue, Apr 10, 2018 at 9:24 AM, Paul McCall <[email protected]> wrote: > > Yes, we know that, and have used it on lighter loads. But, apparently > there is a challenge on a heavier load as we described below. Wanting to > know if we can do what we want and maybe we just have the wrong external > relay > > > -----Original Message----- > From: Af <[email protected]> On Behalf Of Christopher Tyler > Sent: Tuesday, April 10, 2018 12:20 PM > To: [email protected] > Subject: Re: [AFMUG] Sitemonitor Question with Relay > > Yes, there is a relay output on the siteMonitor II that you can trigger > via SNMP or web interface. > > -- > Christopher Tyler > MTCRE/MTCNA/MTCTCE/MTCWE > Total Highspeed Internet Services > 417.851.1107 > > ----- Original Message ----- > From: "Paul McCall" <[email protected]> > To: [email protected] > Sent: Tuesday, April 10, 2018 11:11:20 AM > Subject: [AFMUG] Sitemonitor Question with Relay > > My service manager seems to be struggling with using the Sitemonitor Relay > contact to trigger a 48 Relay that we want to use to power cycle the whole > tower if necessary. So, Packetflux states that the Relay control is > maximum. 30v 1amp. So a little more than half the amps at 48v. > > So, in the past (lighter loads on towers) we used this to trigger an > external relay and "open" the ground to the main power feed going up the > tower. At 48v, we sometimes are around 2amp on the bigger towers, some > perhaps a bit higher still. (with a 48v relay). > > We should be able to use the Sitemonitor to somehow accomplish it. > > Can anybody comment on this? > > Thanks! > > Paul McCall, President > PDMNet, Inc. / Florida Broadband, Inc. > 658 Old Dixie Highway > Vero Beach, FL 32962 > 772-564-6800 > [email protected]<mailto:[email protected]> > www.pdmnet.com<http://www.pdmnet.com> > www.floridabroadband.com<http://www.floridabroadband.com> > > > >
