Varifan MSC-10 User manual

MSC-10
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Varifan MSC-10
User’s Guide
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MSC-10
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Although the manufacturer has made every effort to ensure the
accuracy of the information contained herein, this document is
subject to change without notice due to ongoing product
development.
WARNINGS AND PRECAUTIONS
Equipment , probe failure, blown fuses and/or tripped breakers
may prove harmful to the contents of the building. Therefore it is
strongly recommended to install backup devices and alarm or
warning devices. Spare equipment should also be available at
the owner’s site. Equipment manufactured by the manufacturer is
protected against normal line surges. High surges caused by
thunder storms or power supply equipment may damage this
equipment. For added security against line voltage surges it is
recommended that surge and noise suppression devices be
installed at the electrical distribution panel. Use of shielded cable
for probes is recommended for protection against lightning.
These devices are available from most electrical supply
distributors.
RECOMMENDATIONS
The manufacturer recommends that all installation procedures
described herein be performed by a qualified electrician or
installation technician. Further more the manufacturer
recommends to test all the functions and equipment connected to
the EMC-2, including the alarm system and backup devices, after
installation, after change to the installation and twice a year.
Fuse verification and replacement, as well as the proper setting
of control values shall be the responsibility of the owner of this
equipment.
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CHAPTER 1 - INTRODUCTION ......................................5
General ....................................................................................................5
CHAPTER 2 - INSTALLATION GUIDELINES
AND SAFETY PROCEDURES ........................................................... 7
Electrical Connections ............................................................................. 7
Guidelines for Modules and Sensors...................................................... 12
Unpacking the MSC-10 ......................................................................... 13
Installation ............................................................................................. 13
CHAPTER 3 - USER GUIDE............................................................. 18
Unit Description .................................................................................... 18
Operating Instructions............................................................................ 20
Downloading a New Configuration ....................................................... 20
LIST OF ABBREVIATIONS .............................................................. 21
SPECIFICATIONS................................................................................. 22
LIMITED WARRANTY ....................................................................... 23
Table of Contents
List of Figures
Figure 2-1 Safety Control Backup Wiring (2 Sheets).........................9-10
Figure 2-2 Typical Sensor Probe Wiring............................................... 11
Figure 2-3 Enclosure Mounting Hole Locations ................................... 15
Figure 2-4 Installation Set-up ............................................................... 16
Figure 2-5 Main Board Layout and Connections .................................. 17
Figure 3-1 MSC-10 Main Components................................................. 19
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GENERAL
1. This instruction manual is provided for the installation and operator
personnel of the Varifan Multistage Computer (MSC-10).
2. The MSC-10 is a modular control unit which uses an advanced digital
control system. The MSC-10 is considered a “master control unit” and can
control and monitor up to 4 modules of two stages each, as follows:
• VSM-2 Variable Speed Module (max. 3) 2 variable
stages 6 Amp. nominal each (0.1 A - 6 A)
• CM10-2 Control Module, 2 single speed stages,
10 Amp. each (0.3 - 10 A)
• CM3-2 Control Module, 2 on/off stages 4 Amp. each
(5 mA - 4 A)
• CIM-1 Curtain, Air Inlet and 2 speed motor modules
(5 mA - 4 A)
• CIP-1 Curtain and Air Inlet Positioner (5 mA - 3A)
• ARM-1 Alarm Relay Module (8 second delay)
NOTE: The MSC-10 provides control for 10 outputs but only
six of the outputs can be variable. The VSM-2 uses two variable
outputs while the CIP-1 uses only one variable output.
3. The MSC-10 can also monitor up to 4 probes, such as:
• Temperature probe
• Humidity probe
• Static pressure probe
• Lighting probe probe
• 4 @ 20 mA
4. Other features of the MSC-10 include:
• Separate power source for each stage
• Manual override capability
PC Interface PCI-20 / RCM-40 (optional)
INTRODUCTION
CHAPTER 1
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5.The MSC-10 contains a microprocessor which keeps in memory the
programmed operational logic from the configuration module once
“downloaded”. The operational logic is a software program created for your
particular configuration (ie. your equipment and installed control
modules). The operational logic is stored inside the small configuration chip
supplied with the MSC-10. After “downloading” the configuration program is
memorized in the board located at the rear of the faceplate, a “download” is
required if this board is changed. When a new or upgrade configuration is
required the procedure to download the operational logic, using the
configuration module, is explained later in chapter 3.
6. The MSC-10 computer is used for heating, cooling and ventilation
equipment in animal confinement buildings or greenhouses. The applications
where the MSC-10 can be used include the following systems:
• Multistage ventilation / heating / sprinkler systems
• Combined natural and forced ventilation systems
• Room ventilation systems
7. The MSC-10 can be integrated in a fully automated system using its
built-in program with 3 categories of control modules.
• Control Module
• Actuator Module, and
• Variable Speed Module
8. Control Module. The control module operates in an ON/OFF
switching mode using solid-state relays.
9. Actuator Module. The actuator module is used on curtain machines
and inlet actuators which provide OPEN and CLOSE commands.
10. Variable Speed Module. The variable speed module controls the
speed of variable speed fans.
•The installation of the Varifan Multistage 10 and its connections to the
various control modules should be well planned for optimum performance and
userfriendliness. The following guidelines are given to help establish the best
installation configuration for your building and for the overall safety of
personnel and animals. *It is prohibited to use overhead cables outside the
building.
Chapter 1 - Introduction
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ELECTRICAL CONNECTIONS
2. Electrical Power. Locate the power source of your building and
install the MSC-10 in the most convenient location. Protection from electrical
surges should be included in the planning of each installation. The MSC-10
electrical power default is a 230 VAC/60 Hz power source. It is also capable
of running on a 115 VAC/60 Hz.
3. Electrical Power 3 Phase, 208 VAC/Variable Speed Fan. In order
to control the speed of a variable speed fan, the MSC-10 must be
synchronized with the power source of the variable fan.
NOTE
Only the variable speed fan requires the same power lines as
the MSC-10, all other components can use a separate power
source.
4. Electrical Cables. All electrical cables must be installed according to
local wiring code. Each control module must be connected to the master
control unit using two-wire low voltage cable. It is recommended to use
shielded wire cable to interconnect the different modules to the MSC-10. The
shielded wire cable is very efficient to protect the MSC-10 against any
electromagnetic interference generated by a thunderstorm or other operating
machinery. This principle applies specifically when the cable is longer than 10
feet and for any probe extensions of the same length or longer.
CHAPTER 2
INSTALLATION GUIDELINES
AND SAFETY PROCEDURES
Set the line voltage switch inside the MSC-10 to the correct value before
attempting to operate the multistage computer.
Ensure that the same phases supplying the MSC-10 are the same as the two
power lines of the variable fan (s). Otherwise the control signal of the MSC-10
will be too early or too late and the fan will not rotate as expected.
CAUTION
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5. Electrical Grounding. The shields of all cables should be connected
the MSC-10 power ground only, except for the cable connected to a PC
interface (PCI-20 or RCM-40) where the shield should be connected as
instructed in the PCI-20 or RCM-40 document.
6. Safety Control Backup. The use of a safety control backup is
strongly recommended to ensure a safe environment. The use of an alarm,
warning device or other backup devices which can detect equipment failure,
blown fuses and/or tripped breakers would help prevent harm or damage to
the content of the building. The safety control backup wiring (see Figure 2-1)
and the following guidelines are given for a safety control backup:
a) Backup Power Source. A backup relay (DPDT) connects to the
power source 1 in normal operation but will switch to the power
source 2 if the source 1 is disabled. The backup relay should be
selected to ensure it is capable of supporting the power load
required.
b) Backup Thermostat. It is also strongly recommended
to put a thermostat to at least one fan in parallel to the MSC
module output. If the Multistage Computer fails,
the backup thermostat will activate the dedicated fan at
full speed when the temperature will reach the set point
of the thermostat. The thermostat should be accessible
for its adjustment and should be set at 3 to 5 degrees
above the fan relative set point.
7. Terminal Block Connections. The MSC-10 terminal block is
equipped with numbered connections for ten control modules. Each module
must be connected (wired) to its proper terminals. Refer to the configuration
documents and wiring diagrams supplied for your equipment.
NOTE
Each multistage computer is shipped with a configuration
document and its wiring diagrams to show the connection
points of each control module and sensor. The correct
sequence of the various stages require the modules to be
connected in their proper order.
Chapter 2 - Installation
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8 PIN RELAY DPDT
(OMRON model MK2EP-UA-AC120)
3
4
5
6
2
1
8
7
NO 2
NO 1
NC 1
NC 2
COM 2
COM 1
L2 GND
L1
3
4
5
6
2
1
8
7
DISTRIBUTION
PANEL
L2 L1 GND
LINE
230 VAC
source 1
DISTRIBUTION
PANEL
L2 L1 GND
N
LINE
230 VAC
source 2
Chapter 2 - Installation
Figure 2-1 (Sheet 1 of 2) Safety Control Backup Wiring
MSC POWER INPUT
SAFE WIRING WITH SECOND POWER SOURCE
If the 115
VAC line is
used, then
replace L2 by the
Neutral Line as
shown on the
diagram.
1
1
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MST-1
T15-WD
L2 L1
MSC OUTPUT
OR
Figure 2-1 (Sheet 2 of 2) Safety Control Backup Wiring
BACK-UP THERMOSTAT
The MST-1 provides an Alarm Relay in addition.
1
1
Chapter 2 - Installation
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POWER
GROUND
SHIELD POWER
GROUND
WIRE
CONNECTOR
PROBE
Figure 2-2 Typical Sensor Probe Wiring
Chapter 2 - Installation
TYPICAL SINGLE PROBE
It is recommended to solder the
junctions of the probes.
TYPICAL 4 PROBES WIRING
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Chapter 2 - Installation
GUIDELINES FOR MODULES AND SENSORS
8. Location of Control Modules. The control modules should be
placed in locations that are easy to reach but away from damaging elements.
Control modules can be placed either near the equipment they control, such as
fans and curtain machines or in a central area close to the MSC-10 module.
9. Inside Temperature Sensor Probe. The inside temperature sensor
probe should be located in an area which gives the most accurate temperature
reading to achieve optimum ventilation. The probe should also be connected
to the MSC-10 with a shielded two-wire cable (see Figure 2-2). It should be
located in an area where it will be protected from operating machinery, animal
bites, personnel or any circumstance which could damage the sensor.
WIRING TROUBLESHOOTING
1. If a temperature sensor or its wiring become a short
circuit, the MSC-10 will interpret this as a very high
temperature (HI displayed) and will try to decrease the
temperature by turning on the cooling system.
2. If a temperature sensor or its wiring become an open
circuit, the MSC-10 will interpret this as a very low
temperature (LO displayed) and will try to increase the
temperature by turning on the heating system.
10. Optional Inside Temperature Sensor Setup. An optional setup
involves the use of four temperature probes wired in a series/parallel circuit
(see Figure 2-2) which provides a single average temperature reading from the
four probes. Refer to the configuration document supplied with the MSC-10
computer and see the wiring diagram of this optional setup.
11. Outside Temperature Sensor Probe. The outside temperature
probe should be installed in a location which is not influenced by heat
generated from inside the building or direct sunlight. The temperature probe
should also be protected from physical damage.
2. Static Pressure Sensor. The static pressure sensor should be
installed near an outside wall and connected to the MSC-10 by a three-wire
cable. Two small flexible vinyl tubes are connected to the sensor to allow for
the sampling of the inside and outside static pressures. Refer to the Static
Pressure Sensor SPS-1 Manual for installation instructions.
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Chapter 2 - Installation
UNPACKING THE MSC-10
13. Remove the MSC-10 from its shipping box and ensure that all
components are intact. The following items should be included with a new
MSC-10 computer:
a) MSC-10 computer unit;
b) MSC-10 Installation and User’s Guide;
c) Configuration document package which includes wiring diagrams
and control settings particular to your setup.
INSTALLATION
14. Probes and Modules. Install the temperature sensor probes and
control modules supplied with your configuration (see the wiring diagrams of
the configuration document).
15. Initial Setup. The MSC-10 computer has top and bottom mounting
holes (see Figure 2-3). Remove the screws ( see Figure 2-4 (1)) securing the
front panel (2) and the screws securing the lower access plate. Install the
MSC-10 computer on a wall or suitable area and secure it with attaching
hardware and perform the following:
a) Ensure the ribbon cable (3) is properly connected.
b) Connect the cable wiring of each control module and sensor probe
to the terminal blocks (see Figure 2-5) of the MSC-10. The wiring
connections are shown in the wiring diagram provided with the
configuration document.
NOTE
Ensure the line voltage switch is correctly set.
c) Install the front panel (see Figure 2-4 (2)) and the lower access plate
on the enclosure and secure them with their attaching screws.
d) If upgrading your system to a new configuration, cut out the
faceplate labels (4) and (5) supplied with the configuration
document and install them in the front panel.
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e) Install each faceplate label as shown in detail A, insert the cutout
label (6) into the input slot (7) on the rear of the front panel
(removed). Adjust or align the cutout label by moving it through
the access hole (8).
f) Install the CONTROL VALUES label (5) and the OUTPUTS label
(4) into their appropriate slot of the front panel.
g) Before proceeding to the configuration setup of your installation,
review the User Guide in Chapter 3 for the control descriptions of
the MSC-10 computer.
Chapter 2 - Installation
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REAR VIEW
TOP MOUNTING
HOLE
BOTTOM MOUNTING
HOLE
BOTTOM MOUNTING
HOLE
Figure 2-3 Enclosure Mounting Hole Locations
Chapter 2 - Installation
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Chapter 2 - Installation
Figure 2-4 Installation Set-up
A
DETAIL A
1
2
4
6
5
7
8
1 SCREWS (4)
2 FRONT PANEL
3 RIBBON CABLE
4 OUTPUTS LABEL
5 CONTROL VALUES LABEL
6 CUTOUT LABEL
7 INPUT SLOT
8 ACCESS HOLE
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Figure 2-5 Main Board Layout and Connections
Chapter 2 - Installation
J1
Q7
K5
Q6
MAIN BOARD
C3 C5
CONFIG
MODULE
COMPUTER
REMOTE
OUTPUT
OUT3OUT4 LINE
115/230 V
OUT1OUT2
OUT5OUT6 PROBES
- +
T1
LINE VOLTAGE
SW1
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UNIT DESCRIPTION
1. The Varifan Multistage 10 Computer is equipped with a solid
enclosure, moisture resistant covers and necessary components for ease of
operation. The MSC-10 includes the following main components (see Figure
3-1):
a) Access plate (1) secured by its screws (2), permits access to the
wiring connections and to download the configuration module (10).
b) Front panel (4) is equipped with a gasket seal and secured by its
screws (6). The front panel permits viewing the operation status of
the unit.
c) Heat sink components (7), one on each side of the unit are
connected internally to the main board.
d) Config module storage location (9) allows the operator to keep the
configuration module in a safe location.
e) Configuration module (11) contains the logic program information
on the type of sensors used, temperature unit of Celsius or
Fahrenheit, control value descriptions and the configuration of your
setup (i.e. a control program of what to activate and when,
differentials, interlocks etc.).
f) Temperature sensor (10) is used to send temperature signals to the
MSC-10. The temperature sensors are normally located at remote
areas of the building.
g) Control values label (12) and the outputs label (5), allow the
operator to view the inputs and outputs of the MSC-10 computer.
h) Up arrow button (14) and down arrow button (13), allow the
operator to select a control value LED indicator.
j) Adjust knob (8), allows the operator to set a specific value which is
read on the digital display (3) of the front panel (4).
USER’S GUIDE
CHAPTER 3
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Chapter 3 - User’s Guide
Figure 3-1 MSC-10 Main Components
1 ACCESS PLATE
2 SCREW (2)
3 DIGITAL DISPLAY
4 FRONT PANEL
5 OUTPUTS LABEL
6 SCREW (4)
7 HEAT SINK (2)
8 ADJUST KNOB
9 CONFIG MODULE STORAGE LOCATION
10 TEMPERATURE
11 CONFIGURATION MODULE
12 CONTROL VALUES LABEL
13 DOWN ARROW BUTTON
14 UP ARROW BUTTON
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k) LED indicators (vertical row of red lights) display which input or
output function is currently activated. The LED indicators located
beside the CONTROL VALUES label are set by the operator,
however the LED indicators beside the OUTPUTS label are
displaying the automatic operation of the specific control module
output.
OPERATING INSTRUCTIONS
2. The first step in the operation of the MSC-10 involves setting the
main set point, which is the Desired Room Temperature (DRT). Verify the
control settings preset at the manufacturer for your configuration (refer to
your configuration document for the table of control settings). Use the control
settings table to enter your own control values if you prefer or use the
manufacturer’s preset control values.
3. All other temperature control values are selected as Relative Set
Points (RSP) which are relative to the DRT. For example, to set a heating
stage so that it begins to operate within the inside room temperature at five
degrees below the Desired Room Temperature, select the HEATER STAGE
ON parameter with the UP or DOWN arrow button, and then rotate the
ADJUST knob until a reading of -5.0 is shown in the digital display on the
front panel.
NOTE
The text in italics indicate the reading on the digital display.
4. Heating stages are preset to operate until a two degree temperature
increase occurs before shutting off. Other settings, such as minimum speeds
and bandwidths on variable fan stages, timer functions and the RSP for other
equipment are adjusted the same way until the correct sequence (balance) of
environmental control is achieved in the building.
DOWNLOADING A NEW CONFIGURATION
5. The procedure to download a new configuration to the MSC-10
computer is as follows (see Figure 3-1):
a) Turn off the power source to the MSC-10 (flip the circuit breaker on
the power distribution panel).
Chapter 3 - User’s Guide
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