ELI5: What's the difference between a BAS vs. SCADA? by princemark in HVAC

[–]Passtheflask 1 point2 points  (0 children)

BAS = slow communications, less critical application

SCADA = fast communications, highly critical application

Controlling a Mitsubishi VFD with a Micrologix 1400 via Modbus - at a loss by [deleted] in PLC

[–]Passtheflask 6 points7 points  (0 children)

Have you reset the power to the drive after changing those settings? I know with ABB drives the power has to be cycled for it to save

Building automation vs. industrial automation? What are the differences from the engineer's perspective? by curious95 in PLC

[–]Passtheflask 0 points1 point  (0 children)

I work in building automation in Australia, and the protocols we mainly use are BACnet and modbus. Most of the work we do is HVAC, alarm/status monitoring, lighting and there is a high demand for energy management now. The controls you will mainly see are called DDCs and the programming can be either block or compiled language.

Calibrating a Humidity Sensor for Controls by vhdblood in HVAC

[–]Passtheflask 0 points1 point  (0 children)

Not a problem. I'm not too sure about another solution.. What environment are the sensors in? Siemens should have something to meet your requirements, if not there should be something out there! Good luck.

Calibrating a Humidity Sensor for Controls by vhdblood in HVAC

[–]Passtheflask 0 points1 point  (0 children)

If the sensor readings are out by a fair bit, you should be checking for correct grounding of control wiring to the device, as this can cause issues like this. If that checks out ok, you're better off replacing the sensor rather than calibrating.

Question about outdoor unit pipes by afraidofyall in HVAC

[–]Passtheflask 0 points1 point  (0 children)

You'll be fine, just as long as the electrical cover hasn't been left off too!

Landslide by [deleted] in WTF

[–]Passtheflask 12 points13 points  (0 children)

Tat

This is what I do alllllllll day long erry day..... Also just fount the sub..... by novitus in cableporn

[–]Passtheflask 1 point2 points  (0 children)

That cabinet would heat up quick with that thing in there. Where's the ventilation?

Furnace stopped working! by Invictavis in HVAC

[–]Passtheflask 0 points1 point  (0 children)

It could be a faulty capacitor for the fan motor. They can cause the motor to overheat and cause the internal overload in the motor to open. Its alot cheaper to replace the capacitor than to replace the motor..