Wiring question

[d1rage5]

I have to what i hope is a simple wiring question.
attached is a pdf of what is wiried up to this point .not showing the motors on this)( didn't want to clotter things).

The two spots have a yellow oval by them. one is on the 5vdc power supply and the other on the relay port 1.

The people that started this is long gone and we were left holding the bag and one item is this that on his paperwork is missing.

do i connect the negitive lead from the 5vdc power supply to the relay port 4 (port 3 has the positive from the 5vdc power supply)

So that you may understand things , heres how things connect

115 from wall goes to connector T2 (+) to A2
115 from wall goes to connector T1 (-) to e-stop to on switch and Connector L3 then to Connector T3 then to connector A1

Connector L1 (-)(Blue Lines) to outlet in cabinet (lower left corner) and to relay port 1

Connector L2 (+)(Red Lines) to outlet in cabinet (lower left corner) and to outlet on the gantry.

Transformer (-) goes to fuse block then to Gecko G201 Drives (blue lines)
Transformer (+) goes to fuse block then to Gecko G201 Drives (Red Lines)

5vdc Power supply (+) goes to fuse block then to common port on Gecko Drives and to the cnc4pc breakout Board (Orange Lines)

5vdc Power supply (-) goes to cnc4pc breakout Board (Green Line) and to ??????relay port 4

[Richards]

IF the relay uses 5VDC for activation, THEN if you connect terminal 4 to DC ground, the relay will be turned on whenever the 5VDC power supply is turned on. On the other hand, if you want to control the relay some other way, then you would connect terminal #4 to a circuit that is ACTIVE LOW (perhaps a signal line from the break-out-board?).

It looks to me like you have a classic Solid State Relay circuit that could be operated by a TTL LOW signal. In the process control computers that I have designed, I would often connect an I/O line from a microcontrol processor directly to the (-) side of the SSR's control inputs. Then, the control program for the microcontroller could turn the SSR on or off.

[d1rage5]

Its been a while that ive worked with things like this, but on my breakout board the SSR would be controlled by one out the outputs?
If its imputs then i have to take a look at putting in a manual switch for the SSR.

looking over the diagram I sent looks like the lower vdc controls the upper AC and the only this controls is the outlet on the granty (the router itself).

Is this right?

Thanks again for your help

[Richards]

Let's assume that L2 is single-phase Neural and that L1 is AC Line. When the Relay is turned on, power will be available to the outlet on the Gantry.

The power input to the 5VDC power supply is not shown in the drawing. In order for the Relay circuit to work, power would have to be supplied to the 5VDC power supply BEFORE the relay could be turned on.

Normally, I wire a control box so that a disconnect switch controls all power entering the control box. Inside the control box, I would normally have a self-latching contactor that had the E-Stop circuit in series with the circuit that controlled the contactor's coil. Then if there was an emergency, hitting the mushroom head on the E-Stop switch would de-energize the contactor and power to all devices controlled by the control box would be cut.