7i97

Newbie fyi. Reading page 7 of the mesa manual I am unsure if my machine should be set to differentail or single ended. Im not real sure what those mean exactly and on page 13 where it says from 7i97 under 'dir' at the top for my grounds, does that mean I just run A jumper from my ground location to that spot? I am needing to know these things but this is my first setup ever for anything like this so I am unsure if I am even asking the right questions at this point. I am setting up and anilam 3000m knee mill btw. Just using the cabinet and non of the console. So far on my mesa tb1 (page 8) I have gone 1. white 2.white 3. non 4.green 5.green 6. non 7.brown 8. brown. I based this off of the sticker on the inside of the encoder housing. Some of it was rubbed off but this is what the sticker was ( attached picture) 

 

Differential or single ended refer to the type of signal your encoder produces. A quadrature encoder will typically have an "A" signal, "B" signal and a reference pulse signal frequently labelled "Z".

In a differential output type encoder, each signal will have two output wires that produce a complementary opposite polarity signal to each other. The main signal will be labelled "A" for instance and the complementary signal could be "/A". The wires would have different colors. An A, B, Z differential encoder will have 8 wires when the power and ground are included.

In a single ended encoder, there is only one wire per signal. The single ended encoder will have 5 wires.

If you have 5 wire encoders, only connect signal wires to the A, B, Z, power and ground terminals. Do not connect anything to the /A, /B, /Z terminals. Move the board jumpers to the single ended mode settings.

RT

Thank you that clears thing up for me. I only have those 5 wires coming out from my encoder. They doubled up at the connecter at the other end that used to go to the console when it was being used so it threw me for a loop. What about the power and ground question I ? On all the wires it says to 7i97 but for +5v and grnd it says from 7i97. Page 8 on mesa 7i97 manual. I dont understand what they mean when they say from.

The encoders typically require 5 VDC (some may require 12 or 24VDC) and a ground return to operate, this is equivalent to the + and - on a battery.

The 7I97 encoder inputs TB1 and TB2 are grouped in 6 total blocks of 8 terminals each. Each block of 8 has the following signals: A, /A, gnd, B, /B, +5V, X, /X.

Your encoder voltage supply (+) and return (-) connect respectively to the +5V and gnd terminals on the 7I97. If your encoder cable has shielding (a braided mesh or foil wrapped over the conductors) then this shielding is also connected to the gnd terminal on the 7I97 but the shielding will not be connected to anything at the other end on the cable.

The to and from reference the source. The encoder sends position signals TO the 7I97 but receives voltage FROM the 7I97.

You will need to confirm the voltage requirement of your encoder either from the label or part number on the encoder or by figuring what voltage the old controller was supplying to the encoder.

RT

I don't suppose you could help me out with what wires need to go to tb3 could you? Or can you at least tell me if the wires for tb3 are going to be ones that comes from the motors? They are anilam permanent magnet dc brushless motor. I'm sure these questions are a bit vague so no expecting too much definite info back

TB3 can only interface with the motor drives, not directly to the motor. What motor drives are you using with your motors?

With regards to TB3, each block of 4 terminals handles 2 functions: (1) enabling/disabling the motor or spindle drive, (2) sending the control signal to the motor drive in the form of a continuously variable voltage between -10 and +10 VDC. A signal of 0 volts tells the motor to stop.

ENA- and ENA+ provide the enable/disable signal to the drive. The wiring of these terminals depends on the type of enable signal your drives need.

- If your drive needs +5 VDC to enable ("active high enable") then ENA+ is wired to a +5 VDC voltage source (TB4 pin 21 or 22) and ENA- is wired to the drive enable pin.

- If your drive needs a ground signal to enable ("active low enable") then ENA- is wired to a ground (TB4 pin 23 or 24) and ENA+ is wired to the drive enable pin.

GND and AOUT are for the control signal. AOUT would typically be wired to the drive "SIGNAL+" or equivalent signal name used for your specific drive. GND would go to the drive "SIGNAL-" or equivalent. Additionally, I highly recommend that you use a shielded cable for the drive control signal. With a shielded cable, the shield is also connected to the GND terminal next to AOUT on the 7I97 but the shield is left unconnected at the drive end of the cable. If you don't have a shielded cable, twist the two wires together at a twist pitch of 1 to 1.5 inches for the whole length. Avoid running the drive control signal wires alongside high current wiring, AC wiring or wires that control solenoids.

RT

when you say drives are you talking about the amplifiers? Mine are anilam 33000123. They are the ones found on page 11 of the attached manual

Yes, drives = amplifiers.

RT

Ok so this is the layout of my amplifier. Im pretty sure that it needs the 5v+ to enable... I think. Hopefully uou can make snse of my drawing here. The other pins that are crossed out on the amplifier are not used or at least dont have any wires coming from them.