Munters SMART-8C Instruction manual

Manual for use and maintenance
SMART-8C/3MD
Climate Controller
Ag/MIS/UmGB-2375-07/16 rev 1.2
P/N: 110591
SMART-
8C/3MD

© Munters AB, 2016 2
SMART-8C/3MD
Manual for use and maintenance
Revision
: N.1.2 of 13.11.2016
Product Software
: 1.01
This manual for use and maintenance is an integral part of the apparatus together with the attached
technical documentation.
This document is destined for the user of the apparatus: it may not be reproduced in whole or in part,
committed to computer memory as a file or delivered to third parties without the prior authorization of the
assembler of the system.
Munters reserves the right to effect modifications to the apparatus in accordance with technical and legal
developments.

© Munters AB, 2016 3
Index
Chapter page
1
Introduction...................................................................................................................5
1.1 Disclaimer ..................................................................................................... 5
1.2 Introduction................................................................................................... 5
1.3 Notes........................................................................................................... 5
2
Precautions....................................................................................................................6
2.1 Grounding .................................................................................................... 6
2.2 Checking the battery level................................................................................ 6
3
Introduction to the SMART-8C/3MD ...........................................................................7
3.1 Features........................................................................................................ 7
3.2 Theory of operation ........................................................................................ 7
3.2.1 Mode .............................................................................................................................7
3.2.2 Fan operation ................................................................................................................7
3.2.3 Curtains..........................................................................................................................8
3.3 User interface ................................................................................................ 8
3.4 Hot keys ....................................................................................................... 8
3.5 Menu structure............................................................................................... 9
3.6 General features ............................................................................................ 9
3.7 LEDs........................................................................................................... 10
4
Using the SMART-8C/3MD....................................................................................... 11
4.1 Initial Setup ................................................................................................. 11
4.1.1 Setting the basic parameters...................................................................................... 11
4.1.2 Configuring the alarm parameters............................................................................. 11
4.2 Sensor Configuration .................................................................................... 12
4.2.1 Configuring temperature sensors............................................................................... 12
4.2.2 Configuring digital input sensors ............................................................................... 13
4.3 Testing sensors and relays.............................................................................. 13
4.4 Cooling ...................................................................................................... 14
4.4.1 Munters Drive fans ..................................................................................................... 14
4.4.2 Foggers and soakers.................................................................................................. 15
4.4.3 Configuring the curtains ............................................................................................. 18
5
Installation.................................................................................................................. 19
5.1 Mains voltage connections............................................................................. 19
5.2 SMART-8C/3MD wiring................................................................................ 19
5.3 Communication wiring................................................................................... 23

© Munters AB, 2016 4
6
Electrical grounding for controllers ........................................................................... 24
6.1 Ground rods................................................................................................ 24
6.2 Ground wire................................................................................................ 25
6.3 Ground clamps ............................................................................................ 25
6.4 What should be grounded? ........................................................................... 25
7
Technical specifications ............................................................................................. 26
8
Troubleshooting ......................................................................................................... 27
9
Appendix 1: Features parameters............................................................................. 28
10
Warranty.................................................................................................................... 31

© Munters AB, 2016 5
1Introduction
1.1 Disclaimer
Munters reserves the right to make alterations to specifications, quantities, dimensions etc. for production
or other reasons, subsequent to publication. The information contained herein has been prepared by
qualified experts within Munters. While we believe the information is accurate and complete, we make no
warranty or representation for any particular purposes. The information is offered in good faith and with
the understanding that any use of the units or accessories in breach of the directions and warnings in this
document is at the sole discretion and risk of the user.
1.2 Introduction
Congratulations on your excellent choice of purchasing a SMART-8C/3MD controller!
In order to realize the full benefit from this product it is important that it is installed, commissioned and
operated correctly. Before installation or using the fan, this manual should be studied carefully. It is also
recommended that it is kept safely for future reference. The manual is intended as a reference for
installation, commissioning and day-to-day operation of the Munters Controllers.
1.3 Notes
Date of release: March 2014
Munters cannot guarantee to inform users about the changes or to distribute new manuals to them.
NOTE All rights reserved. No part of this manual may be reproduced in any manner whatsoever
without the expressed written permission of Munters. The contents of this manual are subject
to change without notice.

© Munters AB, 2016 6
2Precautions
•Grounding
•Checking the battery level
2.1 Grounding
•Always connect temperature and sensor shields to earth ground. Avoid mixing high
voltage wiring with sensor and low voltage wiring.
•Keep the controller as far as possible from heavy contactor boxes and other sources of
electrical interference.
•Do not connect communication wire shields, which go from one house to another at both
ends. Connect them at one end only. Connection at both ends can cause ground loop
currents to flow, which reduce reliability.
•The COM connection for communications is not the shield wire. The COM, RX and TX
wires must connect to each other at all controllers.
2.2 Checking the battery level
Check the battery once a year. The output must be 2.7 volts (minimum). Authorized personnel only
must replace the battery if the output is below the minimum required level or every five years.

© Munters AB, 2016 7
3Introduction to the SMART-8C/3MD
Munters' SMART-8C/3MD Controller provides a comprehensive solution for dairy farmers seeking a
low cost solution without sacrificing quality. SMART-8C/3MD gives you control over the
temperature and humidity in buildings using intelligent, user-friendly climate control software.
The primary function of SMART-8C/3MD is to control the fans; the secondary function is to control
curtains. Ventilation also includes fogging and soaking options.
3.1 Features
•Controller operates fan and curtains based on temperature or temperature-humidity
calculations
•Analog inputs:
oTemperature (up to three)
oHumidity (one)
•Ventilation via:
oMunters Drive fans (three analog output controlled)
oRelay-controlled fans (three)
•Digital inputs
oWind speed
oWater measurement
3.2 Theory of operation
•Mode
•Fan operation
•Curtains
3.2.1 Mode
SMART-8C/3MD can operate according to one of the user-selected modes:
•
Air Temperature
: Current air temperature is the key factor in determining controller
functionality
•
Temperature Humidity Index (THI)
: Combines humidity and average temperature to
provide a fluctuating target temperature
3.2.2 Fan operation
SMART-8C/3MD features two types of fans:
•
Munters Drive
: The fans are controlled by 10 – 0 volt analog outputs. They provide the
bulk of the ventilation in the shed. There are three Munters Drive fans, each one in a
different zone in the shed. Each fan works with an additional cooling technique:
oMunters Drive 1: Soaker

© Munters AB, 2016 8
oMunters Drive 2: Foggers
oMunters Drive 3: Foggers
•
Relay controlled fans
: There are three relay controlled fans that provide additional
ventilation. These fans turn on when the Munters Drive fans turn on.
3.2.3 Curtains
The controllers open and close curtains according to temperature readings. In the presence of high
wind speeds, the curtains can be set to a minimum position.
3.3 User interface
•
LED indicator:
ON/OFF state of each LED indicates whether the relay is operating or idle.
•
Prog
key:
Navigate to the parameters in main menus and edit parameters (press once to
enter edit mode, press again to exit edit mode).
•
Down / Up arrow keys:
Increase/decrease parameter values, navigate Hot Keys (see
Hot Keys
section) and menus.
•Select key:
oNavigates in and out of main screen and menus (press once to enter main menus,
press again to exit).
oErase changes made to parameters. If you change a parameter incorrectly, click
Select
and the parameter reverts to the previous definition.
Summary: To get to menu items:
1. Press
Select
.
2. Press
Up/Down
to reach the required menu.
3. Press
Prog
to enter the menu.
4. Press
Up/Down
to reach the menu item.
5. Press
Prog
to edit the item.
6. Edit as required.
7. Press
Prog
.
8. Press
Select
.
For example, to go to Curtain A configuration, from the main screen, press the following keys:
Select > System
>
Curtain A.
, until the required parameter appears.
NOTE After changing any parameter, you must go to the main screen to save the change.
3.4 Hot keys
The
SMART-8C/3MD
can display key data on the screen (no need to enter the menus). To access
this data, on the Main screen, press the ▼▲ keys.
Data displayed
:
•Current average temperature, target temperature, and time
oIn THI Mode: Current THI and Target THI
•Individual temperature sensors readings
oIn THI Mode: Individual humidity sensor readings and average temperature
•Current humidity
•1 to 3 Munters Drive fan operation percentage

© Munters AB, 2016 9
•Current position, next step time, and state messages
oLocked: Controller has set the curtains to 0 or 100%.
oWorking: Curtains are changing position
oMin Pos: Curtains are at the designated minimum position
oIdle: Curtains are in the Happy Zone and do not move
oCal Req!: Curtains require calibration (usually happens after a cold start)
oCalib: Curtains are calibrating
•Fogger cycle state timing
•Soaker cycle state timing
•Daily water consumption
3.5 Menu structure
Table 1: Menu Structure
Control
Settings
Alarms
Test
Calibration
System
Temperature
set point
Curtain
settings
High
temperature
differential
Temperature
sensor 1 - 3
Temperature
sensor 1 – 3
Control method
Fans 1 - 3 Low
temperature
differential
Humidity
sensor
Humidity sensor Temperature 3
definition
Fogging &
soaking
settings
Delay
(seconds)
Analog Output
1 - 3
Water counter High wind speed
Reminder Relays 1 - 8 Curtain open Calibration steps
Digital inputs
1 - 2
Curtain close Measurement unit
Software
version
Fan 1 – 3
minimum/maximum
voltage
History
LCD version Current time
Communication
version
Unit Number
Hardware
version
Baud rate
System reset
LCD test
3.6 General features
•If a screen other than the main screen is displayed for five consecutive minutes, the system
returns to the main screen display automatically (in menus only, not including Hot Keys).

© Munters AB, 2016 10
NOTE Allowing the screen to return to the main screen by waiting in this manner erases any
changes made to the parameters.
•When a value is being modified with the arrow keys (either ▲ or ▼), the changes occur at
a rate of two changes per second. After holding down an arrow key for three seconds,
the changes occur at a rate of 10 changes per second.
•If the system displays one of the Hot Keys and no alarms arise, the screen is refreshed
every second. If the system displays a Hot Key screen and alarms arise, both the Hot Key
screen and the alarm are displayed alternately every three seconds. If more than one
alarm is activated, the Hot Key screen displays the different alarms alternately.
3.7 LEDs
The following illustrations detail the SMART-8C/3MD LEDs
Fogger
Soaker
Curtain Open
Curtain Close
Munters Drive
1 - 3
Alarms

© Munters AB, 2016 11
4Using the SMART-8C/3MD
The following sections detail:
•Initial Setup, page 11
•Sensor Configuration, page 12
•Testing sensors and relays, page 13
•Cooling, page 14
4.1 Initial Setup
The following sections detail the initial steps to be taken after installing a unit.
•Setting the basic parameters
•Configuring the alarm parameters
4.1.1 Setting the basic parameters
Basic parameters are those parameters used to run the software and communications programs.
To set the basic parameters:
1. On the main menu, press
Select
.
2. Scroll to System and press
Prog
.
3. Scroll down and set the following parameters. Press
Prog
to enter and exit each parameter.
o
Control Method
: Choose between Temp and THI.
o
Measuring Unit:
Select Metric or Non Metric. This parameter defines both the
wind speed unit (kilometers/hour or miles/hour) and the temperature unit
(Centigrade or Fahrenheit). Default: Metric
o
History:
Choose the frequency at which data is collected (1 hour, 2 hours, 3 hours,
4 hours, 6 hours, 8 hours, 12 hours, and 1 day
o
Time:
Set the current time.
o
Unit No:
Define the unit number. This number is used when defining communication
between a controller and a PC.
CAUTION Each unit must have a unique number.
o
Baud Rate
: Choose the required value (default: 9600). This parameter is a
measure of data transmission speed between the controller and computer.
NOTE The faster the speed, the higher chance of errors in data transmission.
4.1.2 Configuring the alarm parameters
The Alarm menu enables setting the alarm parameters.
To set the alarm parameters:
1. In the main menu, go to Alarms.
2. Press
Prog
.

© Munters AB, 2016 12
3. Set the following:
•
High Temp Diff:
The differential above the target temperature at which an alarm is sent.
•
Low Temp Diff:
The differential below the target temperature at which an alarm is sent.
•
Delay (sec):
The number of seconds before the alarm is activated.
•
Reminder
: Pressing any button when an alarm sounds causes the controller to ignore
messages for this length of time. The alarm message remains on the screen.
Table 2 lists the alarm messages. View the alarms on the main screen. The main screen displays the
alarms and the main screen alternately.
SMART-8C/3MD
navigates between the alarms
automatically.
Figure 1: Alarm Example
Table 2: Alarm Messages
Alarm Display
Explanation
Possible Alarm Reason
T1 SNS
Opened\Shorted
Error in temperature sensor 1 Temperature sensor number 1 is either out of
order, disconnected or shorted
T2 SNS
Opened\Shorted
Error in temperature sensor 2 Temperature sensor number 2 is either out of
order, disconnected or shorted
T3 SNS
Opened\Shorted
Error in temperature sensor 3 Temperature sensor number 3 is either out of
order, disconnected or shorted
HUM SNS ERR
Error in humidity sensor Humidity sensor is either out of order or
disconnected
High Temperature
High temperature
The average temperature in the building is
higher than the temperature set as the alarm's
temperature difference.
Low Temperature
Low temperature
The average temperature in the building is
lower than the temperature set as the alarm's
temperature difference.
•Reset the alarm relay by pressing
Select
. The alarm messages continue to be displayed
until the problem is resolved.
4.2 Sensor Configuration
The following sections detail how to configure the sensor devices.
•Configuring temperature sensors
•Configuring digital input sensors
4.2.1 Configuring temperature sensors
This section details how configure temperature sensors.
1. Install up to three FTS devices as shown in Figure 6, page 21.
2. Press
Select
and go to System > Temp-3.
ALARM!!!
Sensor 1 Low Temp

© Munters AB, 2016 13
3. Define the third temperature sensor as an inside or outside thermometer.
NOTE FTS-3's data is used in controller calculations only if the sensor is defined as an inside
thermometer.
4. Press
Select
and go to Temperature > Temp.
5. Set the Target Temperature/Target THI.
6. If required, go to Calibration > T1.
7. Change the temperature output value. The system remembers the difference between the
system's calculation and the changed calibration value.
CAUTION Munters temperature sensors come pre-configured. Calibrate a sensor only if there
is a difference between the temperature displayed and the actual temperature.
8. Repeat the calibration for other temperature sensors.
NOTE If an error occurs with a temperature sensor, the information regarding the specific
sensor can be deleted from the
Calibration
menu. This is done by pressing <
PROG
>
when an invalid sensor’s field appears.
4.2.2 Configuring digital input sensors
This section details how to install the digital inputs. SMART-8C/3MD can support a water counter
and a wind speed reader. Each digital input is optional and independently installed.
NOTE Only perform the steps required for your particular installation.

Connect the digital input device(s) as shown in Figure 6, page 21.
1. Press
Select
and go to Test > Digital inputs.
2. Verify that the sensors are working properly.
3. If required, go to Calibration > Water counter and press
Prog
.
4. Change the water/pulse ratio.
5. Go to System > High Wind Speed and press
Prog
.
6. Choose value of high wind speed above which all devices turn off and curtain goes to
minimum position.
7. Press
Prog
.
8. Press
Select
.
4.3 Testing sensors and relays
This menu is used to test the sensors and relays as well as display software/hardware information.
CAUTION Entering Test screen pauses any control currently active. Exit the screen to restart
functions.
Pressing
Prog
when any of the relay items (FAN1, FAN2 or Cooling) is shown causes the controller
to pause. Pressing
Select
once again makes the controller resume operation.
1. Go to Test.
2. Choose the required test:
•
T1/T2/3
: Tests temperature sensors •
Humidity
: Tests humidity sensor
•
Analog
: Test the analog output between
10.0 to 0.0V
•
Relay #
: Tests if relays 1 – 8 are on or off

© Munters AB, 2016 14
•
Digital Input-1/2
: Tests the digital input
pulses
•
Sft Ver
: Checks the software version and
displays the barn type mode.
•
LCD Ver
: Checks the LCD version •
Comm Ver
: Checks the com version
•
Hardware Ver
: Shows the hardware
version
•System Reset: System reset (
for
technician’s use only!
)
•
LCD Test
: Tests the LCD screen
4.4 Cooling
The following sections detail how to configure the cooling methods.
•Munters Drive fans
•Foggers and soakers
•Configuring the curtain
4.4.1 Munters Drive fans
The following sections detail how to configure the Munters Drive fans.
•Munters Drive background
•Configuring the Munters Drive fans
4.4.1.1 Munters Drive background
Figure 2 illustrates a sample graph showing how the ventilation rises from minimum to maximum.
Figure 2: Munters Drive fan graph
When Variable Speed Fan is activated (value above 0%) the corresponding relays should be
activated:
•Fan 1: Relay 5
•Fan 2: Relay 6
•Fan 3: Relay 7

© Munters AB, 2016 15
4.4.1.2 Configuring the Munters Drive fans

Connect the analog output devices (Munters Drive) as shown in Figure 6.

Connect fans 1, 2, or 3 as shown in Figure 7 (optional).
1. Press
Select
.
2. Scroll to Settings and press
Prog
.
3. Scroll to Fan 1 and press
Prog
.
4. Set the following parameters:
o
Temp Diff
: The differential from the target temperature at which the fan turns on
o
Temp Band
: When the fan begins to operate, the fan goes from the minimum to
maximum operation percentages within this band.
o
Time From
: Beginning of the time period in which the fans can operate
o
Time To
: End of the time period in which the fans can operate
NOTE Setting the time from 00:00 to 00:00 enables 24 hour operation. Setting
any
other
identical times (for example 13:15 to 13:15) disables the fans.
o
Minimum Speed
: Minimum fan speed in percentages.
o
Maximum Speed
: Maximum fan speed in percentages
5. Press
Select
.
6. Scroll to Fan 2 and Fan 3 and press
Prog
.
7. Repeat step 4.
8. Press
Prog
and then press
Select
.
9. Scroll to Calibration and press
Prog
.
10. Scroll to Fan 1 Min Volt.
11. Set the minimum possible voltage for the fan.
12. Press
Prog
.
13. Scroll to Fan 1 Max Volt.
14. Set the maximum possible voltage for the fan.
15. Repeat for each fan.
4.4.2 Foggers and soakers
The following section details how to configure the foggers and soakers. These work in conjunction
with the Munters Drive Fans. Soakers work with Munters Drive 1, foggers work with Munters
Drive 2.
•Fogger and soaker background
•Configuring the fogger and soaker
4.4.2.1 Fogger and soaker background
Figure 3 illustrates a sample graph showing how soakers (sprinklers) and ventilation work together.
Figure 4 illustrates a sample graph showing how soakers (sprinklers) and fogging work together

© Munters AB, 2016 16
Figure 3: Graph demonstrating Zone 1 ventilation and soaking
NOTE When soakers operate, Fan1 is disabled.
•The fans go from 0 to 100% based on the Munters Drive Temp Diff and Temp Band
parameters (Munters Drive fans setup).
•Soakers begin operating based on the Temp Diff On parameter (Fogger and soaker setup)
Figure 4: Graph demonstrating Zone 2/3 ventilation and fogging
•The fans go from 0 to 100% based on the Munters Drive Temp Diff and Temp Band
parameters (Munters Drive fans setup).
•Foggers begin operating based on the Temp Diff On parameter (Fogger and soaker setup)

© Munters AB, 2016 17
Figure 5 shows how the soakers and foggers respond to increases or decreases in temperature.
Figure 5: Fogger/soaker response to increase/decrease in temperature
4.4.2.2 Configuring the fogger and soaker

Connect fogger and soaker as shown in Figure 8.
1. Press
Select
.
2. Scroll to Settings and press
Prog
.
3. Scroll to Fan 1 and press
Prog
.
4. Set the following parameters:
o
Temp Diff
On
: The differential from the target temperature from which the fogger
starts operating.
o
Temp Diff Off
: The differential from the target temperature from which the fogger
stops operating.
o
Fog/Soak to Hum
: When the relative humidity level rises to this point, the foggers
and soakers cease to operate.
o
On Time
: Number of seconds that the foggers and soakers operate. To disable,
enter 0).
o
Off Time
: Number of seconds that the foggers and soakers do not operate.
o
Time From
: Beginning of the time period in which the foggers/soakers can operate
o
Time To
: End of the time period in which the fans can operate
NOTE Setting the time from 00:00 to 00:00 enables 24 hour operation. Setting
any
other
identical times (for example 13:15 to 13:15) disables the fogger and soaker.
5. Press
Select
.
6. Scroll to Fan 2 and Fan 3 and press
Prog
.
7. Repeat step 4.
8. Press
Prog
.
9. Press
Select
.

© Munters AB, 2016 18
4.4.3 Configuring the curtains
The following section details how to configure the curtains.

Connect curtains as shown in Figure 8.
1. Press
Select
.
2. Scroll to Settings and press
Prog
.
3. Scroll to Curtains and press
Prog
.
4. Set the following parameters:
o
Temp Diff Below
: The differential from the target temperature from which the
curtain closes entirely.
o
Temp Diff Above
: The differential from the target temperature from which the
curtain opens entirely (100%).
o
Stage Delay
: Define the delay time (from the previous current movement) before
the next current opening or closing.
o
Step Size
: Define the increment (in percentage) between each level.
o
Minimum Position
: Minimal opening percentage
o
Time From
: Beginning of the time period in which the curtains can operate
o
Time To
: End of the time period in which the curtains can operate
NOTE Setting the time from 00:00 to 00:00 enables 24 hour operation. Setting
any
other
identical times (for example 13:15 to 13:15) disables the curtains.
5. After setting each parameter, press
Prog
.
6. Press
Select
.
7. Scroll to System and press
Prog
.
8. Scroll to High Wind Speed and press
Prog
.
9. Define the wind speed above which all devices turn off and curtain goes to minimum
position.
10. Press
Prog
.

© Munters AB, 2016 19
5Installation
The following sections details the installation and wiring procedures.
CAUTION If any problem arises with the hardware, do not open the box. Contact an
authorized electrician.
5.1 Mains voltage connections
Connect the input power of the controller to one or more circuit breakers in the electrical enclose
(fuse box).
•Single wire supply: Recommended for applications in which the controller's outputs are
connected to low power contactors (for example those shown in Figure 7). In this case one
18 AWG cable should be used for Phase and Neutral.
•Multi wire supply: Recommended for high power applications in which the outputs supply
up to 5 Amp each. In this case a separate 18 AWG wires should be connected from each
circuit breaker in the electrical enclose (fuse box) to each output and to the variable speed
fan. All the wires (from the separate circuit breakers) are from the same single phase.
WARNING! Multi wire supply! Up to nine independent mains input may be present in the SMART-
8C/3MD Controller. Put all appropriate circuit breakers in the OFF position before
servicing.
5.2 SMART-8C/3MD wiring
The following drawings detail the SMART-8C/3MD wiring.
WARNING! Before wiring the unit, disconnect the power!
•Figure 6: Board Layout
•Figure 7: Wiring Diagram of Low Voltage Section
•Figure 8: Wiring Diagram of Main Voltage Section and Protection
•Figure 9: Farm Dairy Communication RS-232 Wiring Diagram

© Munters AB, 2016 20
Figure 6: Board Layout