ElectricIslander
Solar Enthusiast
Hi (General edits to this post made to add info and correct genset type to 3 wire start)
Has anyone experience with wiring an old Onan 7.5kW JB remote start propane generator to the Schneider AGS?
Some old posts on the Smokestak generator forum said that this generator is a three wire stop and start setup: "Your genset is a 'three-wire' start and stop. Connect common to start to crank and start, disconnect after the start, the genset continues to run. To stop, connect common to stop while genset is running, genset will stop, then disconnect stop from common. The start and stop switch closures are momentary, only held for as long as needed."
It's not very clear from the Schneider AGS documentation which of the 14 types of wiring setup is applicable but there are types for both three wire and two wire start systems.
The Onan Model number is 7.5JB-3CR/12037AD, serial #C840719042. Below is a photo of it, it has a momentary start-run-stop toggle on the control box. Below is also a schematic showing the start-run-stop toggle switch S2 connections in upper center, with red circled terminal numbers 1-3.
I'd think that all that's needed at minimum would be to parallel the AGS Start / Stop lines to the toggle switch with two wires for Start (Terminal 3: start wire grounded), and Stop (Terminal 2: stop wire grounded) and add a run sense wire to verify to the AGS that genset is running? (Not sure how I'd create a run signal - the thread suggested to "use a relay and the centrifugal switch to send a signal to the Stop terminal when the external two wire circuit is opened, and until the set slows to the point that the centrifugal switch opens"). Apparently a run signal isn't really needed as the AGS generates that internally from the XWPro which signals when AC power is present on it's input.
The AGS setup would seem to be either Schneider AGS Type 8 (works with either 2 or 3 wire) or more likely Type 10 (Three Wire?) which has separate Start, Stop and Run wires. In either case, it's not really clear which wires are counted as the "2 or 3 wires" (perhaps not counting ground? as there are 4 to 6 wires involved)
Has anyone experience with wiring an old Onan 7.5kW JB remote start propane generator to the Schneider AGS?
Some old posts on the Smokestak generator forum said that this generator is a three wire stop and start setup: "Your genset is a 'three-wire' start and stop. Connect common to start to crank and start, disconnect after the start, the genset continues to run. To stop, connect common to stop while genset is running, genset will stop, then disconnect stop from common. The start and stop switch closures are momentary, only held for as long as needed."
It's not very clear from the Schneider AGS documentation which of the 14 types of wiring setup is applicable but there are types for both three wire and two wire start systems.
The Onan Model number is 7.5JB-3CR/12037AD, serial #C840719042. Below is a photo of it, it has a momentary start-run-stop toggle on the control box. Below is also a schematic showing the start-run-stop toggle switch S2 connections in upper center, with red circled terminal numbers 1-3.
I'd think that all that's needed at minimum would be to parallel the AGS Start / Stop lines to the toggle switch with two wires for Start (Terminal 3: start wire grounded), and Stop (Terminal 2: stop wire grounded) and add a run sense wire to verify to the AGS that genset is running? (Not sure how I'd create a run signal - the thread suggested to "use a relay and the centrifugal switch to send a signal to the Stop terminal when the external two wire circuit is opened, and until the set slows to the point that the centrifugal switch opens"). Apparently a run signal isn't really needed as the AGS generates that internally from the XWPro which signals when AC power is present on it's input.
The AGS setup would seem to be either Schneider AGS Type 8 (works with either 2 or 3 wire) or more likely Type 10 (Three Wire?) which has separate Start, Stop and Run wires. In either case, it's not really clear which wires are counted as the "2 or 3 wires" (perhaps not counting ground? as there are 4 to 6 wires involved)
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