hello John elder again with another

video in our component series this video

will cover the RTC fan speed controller

that we use on some of our fans with EC

motors I will cover standard operations

and programming of the controller let's

start by looking at the speed controller

itself upon powerup the controller will

display the letter P and a number which

is the speed setting the speed setting

is a percentage from zero to a hundred

so in this example my controller is

showing P 90 so the motor would run at

90 percent once the motor has started

the display will flash back and forth

between the setpoint and the motor rpms

if your display flashes between the

setpoint and off it means the controller

is not receiving a feedback signal from

the motor for rpms so it thinks the

motor is stopped the controller will

however continue to send an output speed

signal and run the motor even though

it's not receiving the feedback looking

at the back of the controller you can

see that their input terminals for 24

volts AC to power the controller a 0 to

10 volt DC output terminal a ground

terminal and a 0 to 10 volt DC input

terminal there are also two plugs one

for use with an eye Dec motor and one

for telco motors care should be taken to

ensure that these plugs get plugged in

correctly if they're plugged in upside

down the motors will not run now let's

cover programming navigating the

programming is very simple push and hold

the center button on the controller

until the display changes then up or

down buttons to cycle through the

available menus and left and right

buttons to enter and exit a menu to

change a menu setting after entering the

up and down buttons will cycle through

your options and your option will be

saved when you press the left button to

exit the menu once programming is

complete just leave the controller alone

for several seconds and it will return

to normal operations with the new

settings now I'm going to take a closer

look at each menu the first menu is a PP

or application the options are F SC fan

speed control where the motor is plugged

directly into the speed controller or 0

to 10

which is a zero to 10 volt DC output

which would make the speed controller

send out a zero to 10 volt DC output

signal to be used to control a motor

remotely remember the left button will

exit a menu you have entered allowing

you to move on to the next menu the next

menu is SP which stands for setpoint

this is the speed setting that the motor

will run at the setting is a percentage

from zero to 100% so a setting of

setpoint of 50 would cause the motor to

run at half speed if all you need to do

is change the speed you can also just

push the up or down buttons without

entering the programming and change the

speed then the center button to save it

the next menu is LSPD or low speed limit

setting this to 20 for example will not

let you run the motor slower than 20%

just like low speed the next menu HS PD

is high speed and works the same way the

next menu is typ or type

this tells the controller what brand and

type of motor you're trying to control

your options here are n ID for nigh Dec

motors or TC 42 for a telco model 42

motor or TC 48 for a model 48 motor the

telco model numbers can be found on the

motor label the next menu is re this

stands for a remote your options here

are to enable or disable which will turn

on or off the 0 to 10 volt DC input

terminal if enabled the motor speed will

be controlled by the signal not the

speed setpoint this allows the speed

controller to receive a 0 to 10 volt DC

input signal which will in turn control

the motor speed so if the controller

received 5 volts DC on the input

terminal the motor would run at 50

percent of Max the last menu is V er

which stands for version this only

displays the software version the speed

controller is programmed with there are

no changes in this menu

for more information or questions you

can call one eight six six seven eight

four sixty nine hundred or email support

at cast service calm

hello everyone john elder again with

another service video this one's going

to cover all the ways we control our fan

motors

be sure to follow all safe work

practices especially the use of ppe

all circuits should be de-energized

prior to any wiring or service

remember many of our controls will have

more than one circuit that will need to

be turned off

after de-energizing the circuit verify

that the circuit is dead

then lock out and tag the breaker

first let's talk about a belt drive fan

these fans have been around for years

and have been kind of industry standard

for a lot of years these fans are

typically controlled by a contactor

that when energized will send full

voltage to the motor the motor runs at

full speed

so the only way to control the fan speed

is to either adjust the

motor pulley or the fan pulley

or changing the pulleys out to a

different combination the next way we

control a fan motor is with a vfd or a

variable frequency drive

what these drives do is they take in

constant power at constant frequency

and then they convert that power and

change the frequency to the motor and

that's what controls the speed of the

motor

most of these fans are going to be

direct drive fans with three-phase

motors in them

so really with a vfd is the only way you

can control fan speed because you have

no pulleys or

anything to control them with in certain

conditions the vfd can either be mounted

in the fan

it can be mounted inside the building on

a wall somewhere or it can be mounted in

the hood control package

either way the vfd has to be protected

from the weather

and it has to be mounted in a well

ventilated place because those vfds

build up a lot of heat

the vfd can be controlled in a couple of

different ways first is it can be set up

to just run at a constant speed whenever

power is applied

second is it can receive a remote signal

from like a modbus network or from a

building management system for example

be sure to check your wiring diagram for

your job to see which type of control

you're using

the rest of our motor control involves a

totally unique type of motor that we use

here

it's an ec motor it's an electrically

commutated motor

all the electronics for that motor that

it needs to run

are contained within the motor so that

motor gets voltage applied to it high

voltage applied to it

from the breaker panel so it's standing

power and in order to get that motor to

run it has to receive a pwm

signal or pulse width modulation signal

that could be generated in a couple of

different ways we have a speed

controller that can generate that pulse

width modulation

we can also do it through one of our

control packages first is our control

panel

so if you wire the low voltage wiring

from the fan

with a twisted shielded pair down to our

control package

you wire that fan to the correct p

terminals on the control package

ensuring that the polarity is correct

our control board will

produce that pwm signal and control the

fan start as well as a fan speed

we also have a separate ec motor

controller

that just like a vfd can be set up to

run at a set speed or receive a remote

signal

we have a video specifically just for

motor controls and ec

motors so be sure to check that one out

remember that every job is custom built

so there's no two jobs alike

the wiring diagram on your job site is

critical to making sure that everything

gets wired and functions properly

if you have any questions about this or

any of our products feel free to call or

email

thanks for watching