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Posted: Sat Aug 17, 2013 6:08 am
by dusty
JPG40504 wrote:Hooray!!!!
Good advice from Dusty re off/on timing.
Only the start circuit determines direction, and does so only if the centrifugal start switch contacts are made.
The start circuit(including the relay) has no effect on running direction if the armature is rotating fast enough to hold the start switch contacts open.
Since the switches are on opposite sides, one would have to 'go out of their way' to creates this 'issue'.
What I think JPG is trying to say is that once the motor comes up to speed (and the centrifugal switch contacts have opened) the motor start windings are disabled. It is the direction of current through the start windings that actually determines the direction of rotation. Reversing the direction of current flow through the start winding reverses the direction of rotation.
The start circuit in the Crafter's Station (especially the relay), determines the direction of rotation. When the Crafter's Station is turned on using the Accessory Switch the Mode Select (aka start relay) Relay is energized causing the motor to run in the direction appropriate for the SPT.
In the Saw Mode, the Mode Select Relay is not energized. The current for the start windings in the motor flows through the relaxed contacts of the Mode Select Relay.
Posted: Sat Aug 17, 2013 8:34 am
by billmayo
Dusty; How do you raise and lower the saw table on the Crafter's Station? I do not see any lift assembley to allow you to crank the table up or down. I looks like there are two sets of legs and you use set screws to lock in the height of the table. Do you have any pictures available of the the under side of the main table to show where these legs are attached. Can you tilt the main table, how much or is it fixed? It appears the Crafter's Station used the same headstock as the Power Station other than the reverse motor. There was shown a third switch in the lower right corner with a orange wire to it in your wiring diagrams. What kind of switch is this and do you have to push or toggle it? Do you know if the Crafter's Station had a 500 main table first or was it always the 510/520 main table? I have never seen a Crafter's Station is why I ask these questions.
Posted: Sat Aug 17, 2013 10:20 am
by dusty
billmayo wrote:Dusty]
There is no mechanical assist for the main table. You simple unlock it and grunt it up or let it lower itself.
There is a second "carriage" that accepts the legs from the standard main table/trunnion assembly. That carriage includes a clamp mechanism
(like stop collars) that locks the table in position.
The Power Station and Crafter's Station utilize the same motor.
The switches are standard Shopsmith toggles. The Saw Switch is a spdt and the Accessory Switch is a dpdt. There are only two switches. The photo that I think you are referring to shows the relay. The orange wires connect to either the motor or the relay and not to any switch.
The table can be tilted 30° one direction and 45° the other. I use extension table legs in addition to the standard table legs to provide greater stability. This is especially important when I hang the Shopsmith Router Table on the main table (a standard set up or my shop).
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Posted: Sat Aug 17, 2013 1:24 pm
by JPG
One thing that may not be obvious is the saw is operated from the back side, and the second(sawmode) switch is mounted on the back side of the 'transmission case' whereas the 'accessory' switch is mounted in the 'normal' front side location.
???? Were the table tube 'clamps' standard equipment, or a Dusty upgrade???;)
Posted: Sat Aug 17, 2013 2:38 pm
by dusty
[quote="JPG40504"]One thing that may not be obvious is the saw is operated from the back side, and the second(sawmode) switch is mounted on the back side of the 'transmission case' whereas the 'accessory' switch is mounted in the 'normal' front side location.
???? Were the table tube 'clamps' standard equipment, or a Dusty upgrade???]Those did not come with the Crafter's Station.
Posted: Sat Aug 17, 2013 2:44 pm
by JPG
dusty wrote:Those did not come with the Crafter's Station.
I surmised as much!;)
Re: Crafter's Station - Request Wiring Advice
Posted: Tue Sep 10, 2024 1:14 pm
by Chad
I've been trying to wire a Power Station to the way a Crafter's Station is wired to run the motor in either direction.
Below is the wiring diagram, the new relay, and the motor wiring of my setup.
So far, when either switch is turned on for only a second or two, the motor runs at about half speed, with a loud thumping noise, and there is arcing in the relay. What could be causing the problem?
Re: Crafter's Station - Request Wiring Advice
Posted: Tue Sep 10, 2024 2:39 pm
by dusty
I would suggest that you first verify that the motor runs properly when powered conventionally. Just a power cord and the appropriate jumper set up.
Re: Crafter's Station - Request Wiring Advice
Posted: Tue Sep 10, 2024 3:25 pm
by Chad
dusty wrote: ↑Tue Sep 10, 2024 2:39 pm
I would suggest that you first verify that the motor runs properly when powered conventionally. Just a power cord and the appropriate jumper set up.
dusty,
It ran fine prior to the modifications. I'll have to check it again post modifications.
I there a reason for switching the black & white terminals with the new cable coming into the motor? Could that be the issue?
Re: Crafter's Station - Request Wiring Advice
Posted: Tue Sep 10, 2024 6:21 pm
by DLB
Chad wrote: ↑Tue Sep 10, 2024 1:14 pm
I've been trying to wire a Power Station to the way a Crafter's Station is wired to run the motor in either direction.
Below is the wiring diagram, the new relay, and the motor wiring of my setup.
So far, when either switch is turned on for only a second or two, the motor runs at about half speed, with a loud thumping noise, and there is arcing in the relay. What could be causing the problem?
Does your PS motor label say: "To Reverse Rotation Switch Red & Blk Leads?" Also, is the arcing momentary or continuous for the second or two you had it on? I found the schematics that Dusty drew in an earlier post in this thread to be more useful than the wiring diagram. Does the PN on the relay you received match the ad description as opposed to the ad picture? Especially ending in -120F not -12F? (Relay coil operating voltage, IIUC.)
- David
