Temperature Transducer

[ngeary]

Is it possible to connect a temperature transducer to this VSD in the link below or do I need a separate interface controller for the tranaducer ??


http://www.edcscotland.co.uk/acatalog/EDC_Products_ACS50_Single_phase_VSD_50.html

Many Thanks.

 

[crystal ball]

When you say temperature transducer are you talking about a thermocouple or PT100

The drives have analogue input 2-10v and 4-20ma, I would think you need an interface

What is the application?

 

[ngeary]

Thanks for the reply.
Its for controlling fluid flow temperature in a pipeline.
I have been looking at single phase outpouts also which the PID controller in the link below can acheive for small single phase pumps.
This one uses a NTC thermister as the feed back to the controller.

Is the invertor built into this controller ?.


http://www.kanmor.com/literature/d361e.pdf

 

[breezer]

Is the invertor built into this controller ?.

why not save wasting your time and ask the people who make it? they will know for sure and may have a better idea / suggestion

 

[Paper Spark]

The ACS50 only has one analog input, which in most cases is used for the speed reference signal via a potentiometer for the 0/2-10V, or by changing a small dip switch, speed reference can be via an external 0/4-20mA signal. If any external interlocks or other signals are required then they will need to be converted to a digital signal and can then be used with the ACS50 digital inputs to provide a stop signal.
IIRC these drives were brought out as a convenient way for OEMs to install into their equipment for (very) basic speed control, eg washing machines, as unlike their larger brothers (ACS100 -ACS800) they don't need a separate programming panel to alter any parameters.

Bit slow in replying

As for your other link I found this on page 4

VARIABLE SPEED
A standard wet rotor circulator is connected to the 361e on the Var Pmp and N terminals
( 7 and 8 ). The 361e increases or decreases the power output to the circulator
when there is a mixing demand. The circulator speed varies to maintain the correct
mixed supply water temperature at the mix sensor. For correct sizing and piping of the
variable speed driven circulator, refer to Essay E 021e. A visual indication of the current
variable speed output is displayed in the LCD in the form of a horizontal bar graph.

 

[ngeary]

Thats very helpful PS.

Would one of these controllers in the link below interface between the ACS50 and a temperature sensor providing a 0/4-20mA signal.?

http://www.heatonc.com/controllern480-d.php

 

[Spark123]

Can't see why not, what type of sensing element are you looking to use?
What is the application?

 

[ngeary]

I was looking at these sensing elements.

The application is centrifugal pump speed control to control output fluid temperature to a close tolerance.

http://www.contral.co.uk/erol.html#1X0

That link dont work but you can click on "sensors" in the left hand column and the correct ones come up.
I think.

PT100RTD

 

[Spark123]

Link just goes to the main screen with handheld IR thermometers! Which type, pt100? What is the cooling loop for, keeping the beer in the garden shed at the correct temp?