Varifan VSD-1MC-20 User manual

VSD-1MC-20(40)
MANUAL
0-10V / 4-20mA
Variable Speed Module
with Manual Override
Installation / User’s Guide
®
Varifan
MANUAL
AUTO
OFF
1
2
3
456
7
8
9
10
MANUAL
SPEED

VSD-1MC-20(40)
Page 2
This guide will inform the electrician on proper wiring and installation procedures
and, will also inform the user on how to use the VSD-1MC-20(40) module.
The manufacturer recommends that the following installation instructions be
followed to as closely as possible, and that all work be performed by a certified
electrician. Failure to do so may void the warranty.
Description
The VSD-1MC-20(40) module is designed to control a variable speed fan
according to a 0-10 V or a 4-20 mA signal from a master system resulting in a
uniform air environment for your livestock or crop. The output can be operating
manually with the switch and potentiometer on the faceplate. The VSD-1MC is
offered in 3 different models which are VSD-1MC, VSD-1MC-20 or VSD-1MC-40.
This manual covers the VSD-1MC-20 and VSD-1MC-40. The module operates
on 115/230V and 50/60Hz.
The VSD-1MC-20(40) comes in a PVC non-corrosive enclosure that is protected
from dust and humidity. The VSD-1MC-20(40) is covered by a complete two-year
warranty.
Unpacking
Unpack the VSD-1MC-20(40) module and inspect contents for damage. Should
the contents appear to be damaged, contact your local distributor to return the
equipment.
The package should contain the following standard items:
1VSD-1MC-20 or VSD-1MC-40 Module
1 Installation / User’s Guide
Mounting hardware required
This is the list of the mounting hardware needed, which is not included with the
product:
2 conductor wire, non-twisted, AWG #22
Screws (to mount the module on the wall)
Screwdriver
Soldering iron kit or approved sealed connectors

VSD-1MC-20(40)
Page 3
General installation guidelines
-It is recommended to install the unit in a hallway to limit the VSD-1MC-20(40)
exposure to noxious gases.
-In order to avoid condensation problems inside the VSD-1MC-20(40), it is
recommended to install the module on an inside wall. If it is not possible, use
spacers to have an air gap between the wall and the module.
-The VSD-1MC-20(40) should be installed in easy-access location but away from
damaging elements (heat, cold, water, direct sunlight…).
-Do not drill the face, the side, the top or the underside of the module.
-Do not install the VSD-1MC-20(40) near high-voltage equipment, power supply or
transformer.
Wiring Procedure
1. Open the VSD-1MC-20(40) module enclosure.
2. Verify the technical specifications to know which wire to use.
3. Connect the equipment to the 2 wires identified as H1 and H2 as shown in figure
1.
IMPORTANT: The variable output requires the same phase and same voltage as the
controller to operate.
4. Connect the power source to the 2 black terminal block identified as LINE as
shown in figure 1.
5. Set the JP1 jumper (refer to figure 2 for the location of the jumper) to determine
the correct input type. The two types of input are: 0-20 mA (jumper on the 2 left
pins) and 0-10 Volts (jumper on the 2 right pins).
6. Connect the 0-10 V or the 4-20 mA signal to the 2 green terminal block identified
as INPUT as shown in figure 1.
IMPORTANT: Low-voltage and high-voltage wire must be passed through different
conducts at least 1 foot (30 cm) apart. If low-voltage and high-voltage conduits must
be crossed, the crossing must be at a 90-degree angle.
7. Make sure that the Voltage Selector Switch is set to the correct voltage before
powering up the VSD-1MC-20(40) (refer to figure 2 for the location of the
Voltage Selector Switch).
8. Power up the VSD-1MC-20(40) module. Verify that the module operates
correctly.
9. Close the VSD-1MC-20(40) enclosure. Don’t forget to put a security screw or a
padlock.

VSD-1MC-20(40)
Page 4
Figure 1: Wiring Diagram
WARNING!
aTo avoid electric shock, disconnect power source prior to
installation or troubleshooting.
aMake sure that the Voltage Selector switch is set to the correct
voltage before powering up the module.
aThe variable output requires the same phase and same voltage as
the controller to operate.
0-10 Volts or 4-20 mA
INPUT SIGNAL
230V
LINE
VOLTAGE
115/230
VAC
SOLDER OR USE
PROVIDED WIRE CONNECTOR

VSD-1MC-20(40)
Page 5
Using the VSD-1MC-20(40)
With the VSD-1MC-20(40) you can control a variable fan according to a 0-10 Volts or
4-20 mA input signal. Refer to figure 2 for the location of the different switches,
jumpers and selectors of the different module.
Figure 2: Electronic Boards and Component Location
1. Minimum Speed Potentiometer
This potentiometer is used to adjust the minimum speed of the fan. This will be
the minimum speed when the input signal is at its minimum value.
2. Dip Switches (Input Range Switch and Shutoff 5% Switch)
Dip Switch 1 is used to select the Input Range (ON = 2-10 Volts / 4-20 mA, OFF
= 0-10 Volts / 0-20 mA).
Dip Switch 2 is used to adjust the output behavior when the input is below 5% of
its total range (ON = Shutoff, OFF = Runs continuously at minimum speed).
3. Input Type Jumper
This jumper is used to select which input type is used. Two types of input can be
used which are: 0-20 mA (jumper on the 2 left pins) and 0-10 Volts (jumper on
the 2 right pins).
4. Voltage Selection Switch
This switch is used to select the input voltage value (115V or 230V).
[2]
[1]
[3]
[2]
[1]
[3]
[4]
[4]

VSD-1MC-20(40)
Page 6
Figure 3: VSD-1MC-20(40) Faceplate
1. Manual Speed Selector
This selector is used to set the speed at which the variable output will run when
the AUTO/MANUAL Switch is set to MANUAL. The variable output will shutoff is
the Manual Speed Selector is turned completely counter clockwise (OFF).
2. AUTO/MANUAL Switch
This switch is used to select if the variable output operates according to the
Manual Speed Selector (MANUAL) or according to the input signal (AUTO).
®
Varifan
MANUAL
AUTO
OFF
1
2
3
456
7
8
9
10
MANUAL
SPEED
[2]
[1]

VSD-1MC-20(40)
Page 7
The VSD-1MC-20(40) module uses a 0-10 Volts or a 4-20 mA signal to make an
output modulates. User can adjust the fan minimum speed with the potentiometer
located inside the module box on the electronic board (refer to figure 2). That
Minimum Speed Potentiometer is used to adjust the speed when the master
control input signal is at its lowest value.
User can also set how the fan will operates when the input signal is at or below 5%
of its total range. Refer to the logic diagrams at figure 4 and 5 to know the exact
values and behavior of the different switches configurations. The fan can either
continue to run at minimum speed (Shutoff 5% Switch set to OFF) when the input
has reach its minimum value or can stop when the input reach 5% of its total range
(Shutoff 5% Switch set to ON). With the Shutoff at 5% Switch set to ON, a
differential is applied in order to avoid equipment wear. Refer to figure 4 for the exact
value of the differential. Also refer to figure 2 for the location of the Shutoff 5%
Switch.
Another switch also located on the electronic board will select if the input is a 0-10
Volts (0-20 mA) or a 2-10 Volts (4-20 mA) signal. Refer to figure 2 for the location of
the Input Range Switch.
Finally, a jumper (JP1) must be set to determine the input type used. Two types are
available which are: 0-20 mA (jumper on the 2 left pins) and 0-10 Volts (jumper on
the 2 right pins). Refer to figure 2 for the location of the Input Type Jumper.
Here is a description of the VSD-1MC-20(40) operation:
- If the Shutoff 5% Switch switch is set to OFF, the fan will run continuously at its
minimum speed when the input reads it lowest value. If the Shutoff 5% Switch is
set to ON, the fan will stop when the input is at or below 5% of its total range. A
differential is applied to the 5% value. Refer to figure 4 for the exact value of the
differential.
-If the input reads above its minimum value (or 5% if the Shutoff 5% Switch is
set to ON), the fan will modulate from its minimum speed to 100% of its
maximum speed. The full speed will be reached when the input reads 10 Volts or
20 mA.

VSD-1MC-20(40)
Page 8
Figure 4: Logic Diagrams (Auto Mode)
AUTO MODE
Switch 1 = OFF (0-10 Volts or 0-20 mA)
Switch 2 = OFF (No shutoff at 5%)
Fan Speed
100%
Minimum
Speed
10 Volts
or 20 mA
Input
0
AUTO MODE
Switch 1 = ON (2-10 Volts or 4-20 mA)
Switch 2 = OFF (No shutoff at 5%)
Fan Speed
100%
Minimum
Speed
10 Volts
or 20 mA
Input
02 Volts
or 4 mA

VSD-1MC-20(40)
Page 9
AUTO MODE
Switch 1 = OFF (0-10 Volts or 0-20 mA)
Switch 2 = ON (Shutoff at 5%)
Fan Speed
100%
Minimum
Speed
10 Volts
or 20 mA
Input
00.7 Volts
or 1.4 mA
0.5 Volts
or 1 mA
AUTO MODE
Switch 1 = ON (2-10 Volts or 4-20 mA)
Switch 2 = ON (Shutoff at 5%)
Fan Speed
100%
Minimum
Speed
10 Volts
or 20 mA
Input
02.7 Volts
or 5.4 mA
2.5 Volts
or 5 mA

VSD-1MC-20(40)
Page 10
Figure 5: Logic Diagram (Manual Mode)
MANUAL MODE
Switch 1 and Switch 2 are not
used in manual mode
Fan Speed
100%
Minimum
Speed
10
(100%)
Faceplate
Potentiometer
00.7
(7%)
0.5
(5%)

VSD-1MC-20(40)
Page 11
Specifications
DESCRIPTION VALUE
Storage temperature -4°F to 131°F (-20°C to 55°C)
Operating temperature 32°F to 113°F (0°C to 45°C)
Humidity 90% maximum Non-condensing
Weight (VSD-1MC-20) 3,8 lb (1,7 kg)
Weight (VSD-1MC-40) 4,6 lb (2,1 kg)
Size (VSD-1MC-20) 12 1/4” x 7 14/16” x 6 1/4” (31 cm x 20 cm x 16
cm)
Size (VSD-1MC-40) 13 3/4” x 7 14/16” x 6 1/4” (35 cm x 20 cm x 16
cm)
Warranty 2 years
POWER SUPPLY
Operational voltage range (SW1 @ 115V) 92 to 125 VAC
Operational voltage range (SW1 @ 230V) 184 to 250 VAC
Operational frequency range 45 to 65 Hz
INPUT
Input Range 0-10 Volts or 0-20 mA
Maximum wire length 500 feet (150 m)
Recommended wires 2 conductor wire, AWG #22
VARIABLE OUTPUT (VSD-1MC-20)
Recommended maximum current 20 A, 250 VAC
Minimum load 300 mA @ 230 VAC
VARIABLE OUTPUT (VSD-1MC-40)
Recommended maximum current 2x 20 A, 250 VAC
Minimum load 300 mA @ 230 VAC

VSD-1MC-20(40)
Page 12
Limited Warranty
The manufactured equipment and supplied components have gone through
rigorous inspection to assure optimal quality of product and reliability. Individual
controls are factory tested under load, however the possibility of equipment
failure and/or malfunction may still exist.
For service, contact your local retailer or supplier. The warranty period shall be
for two years from manufacturing date. Proof of purchase is required for warranty
validation.
In all cases, the warranty shall apply only to defects in workmanship and
specifically exclude any damage caused by over-voltage, short circuit, misuse,
acts of vandalism, lightning, fortuitous events, acts of God, flood, fire, hail or any
other natural disaster. Any unauthorized work, modification or repair on this
product automatically voids the warranty and disclaims the manufacturer from all
responsibility.
The manufacturer assumes only those obligations set forth herein, excluding all
other warranties or obligations. This warranty stipulates that in all cases the
manufacturer shall be liable only for the supply of replacement parts or goods
and shall not be liable for any personal injury, damages, loss of profits,
interrupted operations, fines for infringement of the law or damages to the
production of the PURCHASER and the PURCHASER shall take up the defence
and hold the manufacturer faultless regarding any legal or extra legal
proceedings, notice, or claim by the customer or by a third party, and regarding
any legal and extra legal expenses and fees brought forward on by such
damages.

VSD-1MC-20(40) VER : 1.0
November 17, 2011