Recent content by opmal7

It's been a while since I had my last circuits class, so I'm just looking for some verification on my calculations. I have a series of lights that I want to combine to 1 circuit (if possible). Each light fixture has 2 bulbs, and I have a total of 12 fixtures, meaning 24 bulbs. I am using...

If anyone is not familiar with Grainger, they are an industrial supply company that sells just about everything you can imagine. I've always been particularly impressed by the fact that even though they carry so many parts, their part numbers are all 5 digits. I believe the first digit is...

I have a motor that I am using, and I need to know what gauge wire to use to connect to the motor. I've looked all over online, but haven't found anything that can tell me a formula or anything to use to figure this out. The motor is 24VDC and draws 50A max, and would be running about 15...

I have an application where I am using a 24V DC motor to drive a ball screw. If someone isn't paying attention and they hit the mechanical stop on the ball screw, the current is going to spike to about 200 Amps. The normal running current is about 35 amps, and the max current is 60 amps...

I'm working on a project that uses solenoids for mechanical activation. The solenoids have lugs for the + and - electrical connections. I am connecting my wires to the lugs with ring terminals. The problem I have is that the product will be subject to outdoor, harsh environmental...

I'm working on a project uses a PLC to monitor an analog input from a sensor. Once the sensor's signal exceeds a certain value, the PLC sends a command to a relay to fire a solenoid. I've hooked the system up to an o-scope, and I'm seeing a delay of about 75ms from the time the sensor...

I know the Ansys academic might not be able to handle the size of problem we are considering. Buying a professional version of Ansys could be an option, depending on what the capabilities are. Can you make animations with Ansys Fluent or CFX? I have data on the recoil characteristics to...

I'm looking to do a fluid flow analysis on the recoil mechanism of a howitzer. The analysis will involve simulating oil flowing through some complex orifice profiles. There will be 2 fluids (oil & nitrogen) in different parts of the recoil mechanism. The results I would like from the...

Hello all. I have a platform that is controlled by two electric motors (one for elevation, one for rotation). During the application, I would like to have the platform maintain it's current position. I'm imagining a system where you set the position manually, and then press a button that...

I have one wire into the relay from the +24V side of the battery. The other wire goes to the + side of the motor brake. Then the - side of the brake goes to the - side of the battery.

The relay connects the brake to the battery, and is controlled by the 5V button on the joystick.

When I hook the brake up to the battery, I do see 24V across the 2 wires, and the brake disengages as expected. When I hook the brake up to the relay, I see no voltage across the brake and it won't disengage. If I disconnect the brake wires from the relay wires, I see 24V across the wires...

If there is no voltage applied to the brake, it is engaged. Once 24V is applied, the brake disengages. In my application, I want the brake applied unless the motor is moving. Pressing the button on the joystick activates the motor controller, and is wired to the relay to release the brake...

The motor in question is a parallel gear motor that attaches to a pinion, which mates into a rack to traverse a platform. Without the brake applied, someone can grab the platform and turn it freely. The motor will not resist this motion. To prevent this, we added a brake to the motor which...

The brake is basically a solenoid that grips on a shaft sticking out of the backside of the motor. There are 4 wires that come from the motor. 2 for the motor and 2 for the brake.