Phason FC Series User manual

FC-1T-1VDC 1 / 8 32741000
FC-1T-1VDC user manual
The FC-1T-1VDC has a 0 to 10 VDC signal output and a disconnect relay that allows you to easily and effectively
control up to 10 variable frequency drives, slave units, modulating valves, or other equipment that requires a DC
signal.
The knob allows you to easily move between and adjust settings, while the programming lights show which settings
you are editing. The two LED displays show temperatures, signal output, programming information, and alarm
codes.
Features
Temperature-based control with extended range:
−13 to 125°F (−25 to 51°C)
Variable 0 to 10 V output
Capacity for up to 10 devices
Disconnect relay for start/stop signal
Alarm relay (for external alarm system or siren)
3-second full-power-turn-on to minimize fan ice-up
Status and programming LEDs
Error code display
Power-failure protection (will not lose settings)
6-foot temperature probe, extendable to 500 feet
Rugged NEMA 4X enclosure (corrosion resistant,
water resistant, and fire retardant)
cCSAus approval
2-year limited warranty
Installation
Switch OFF the power at the source before connecting the
incoming power wires.
DO NOT switch on the power until you have finished all
wiring and verified all equipment is properly connected and
free of obstructions.
Electrical ratings
Input

120/230 VAC, 50/60 Hz
Signal output

0 to 10 VDC, 2K Ωload
Disconnect relay

5A at 250 VAC; 5A at 30 VDC, resistive load

2A at 250 VAC; 2A at 30 VDC, inductive load
Alarm relay

0.4 A at 125 VAC; 2 A at 30 VDC, resistive load

0.2 A at 125 VAC; 1 A at 30 VDC, inductive load

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Common applications
The FC-1T-1VDC has applications in livestock, greenhouse, and light industrial buildings. Ventilation systems that
use three-phase motors often use a variable frequency drive (VFD). The FC-1T-1VDC can control VFDs with its 0
to 10 VDC output.
For applications that use single-phase, permanent split capacitor (PSC) motors, the FC-1T-1VDC can control the
motors using a triac-based slave with DC input, such the Phason FanDRIVE.
The FC-1T-1VDC can also control electronically commutated motors (ECMs) using its 0 to 10 VDC output.
Installing the FC-1T-1VDC
Mount the FC-1T-1VDC
1. Loosen the screws from the front cover and then lift it off.
2. Mount the enclosure to a wall using the four screws provided with the control. Insert the screws into the holes
in the mounting tabs at the top and bottom of the enclosure and then tighten.
Power terminal:
connect the incoming power (120/230
VAC, 50/60 Hz) to this terminal.
Temperature terminal:
connect the temperature probe to
this terminal.
0 to 10 terminal:
connect variable frequency drives,
modulating valves, or other equipment that requires a 0
to 10 VDC input signal.
Disconnect terminal:
if the equipment connected to
#3
requires a disconnect switch, connected to this terminal.
Alarm terminal:
connect an external alarm system or
alarm siren to this terminal.
Temperature selector:
place the jumper on the top two
pins for Celsius, or on the bottom two pins for
Fahrenheit.
1
2
3
4
5
6
1
2
3
4
5
6

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Select the temperature unit
The FC-1T-1VDC can operate in either degrees Fahrenheit (°F) or Celsius (°C). The
default is Fahrenheit.
Locate the UNITS pins in the top-left corner of the circuit board.
For Celsius, place the jumper on the top two pins.
For Fahrenheit, place the jumper on the bottom two pins.
Connect equipment
The FC-1T-1VDC has a 0 to 10 VDC signal output and disconnect relay for controlling variable frequency drives,
modulating valves, or other equipment requiring a 0 to 10 V DC signal.
The disconnect relay is not for controlling fans, heaters, or other equipment. When the 0 to 10 VDC signal output
is at 0, the relay sends a stop signal (closes the disconnect relay) to the equipment you are controlling with the
variable output.
You can connect up to 10 devices (variable frequency drives, modulating valves, or similar equipment) to a single
FC-1T-1VDC. Connect the equipment as shown below.
Replace damaged probes as soon as possible. If there is no probe present or working properly, the
FC-1T-1VDC displays either pd or ps and the 0 to 10 V output operates at 20%.

FC-1T-1VDC 4 / 8 32741000
Connect an alarm system
An alarm system can be a siren, an alarm panel, or an auto-dialer. See your alarm siren’s installation guide for
installation instructions and information about the type of system, normally open or normally closed.
If you are connecting the alarm system to a network of controls and your system uses a normally open
connection (closes on alarm), connect the system as shown in the normally open diagram. Join all the common
(CC) connections together and all the closed-on-alarm (CA) connections together. The FC-1T-1VDC alarm
relays must be in parallel with each other so any control can trigger the alarm system when an alarm condition
occurs.
If you are connecting the alarm system to a network of controls and your system uses a normally closed
connection (opens on alarm), connect the system as shown in the normally closed diagram. Join the alarm relays
in a continuous loop. The FC-1T-1VDC alarm relays must be in series with each other so any control can
trigger the alarm system when an alarm condition occurs.
Normally closed system (open on alarm) Normally open system (closed on alarm)
Program the FC-1T-1VDC
If you are connecting a variable frequency drive (VFD) that has a programmable startup ramp and
you want to take advantage of the deicing feature (3-second full-power-turn-on), set the ramp
duration as short as possible, preferably less than 0.1 sec.
How the FC-1T-1VDC operates
When the temperature is below the idle range, the fan (in other words, DC output) is off.
When the temperature is below the low alarm, the alarm relay activates, the Alarm LED lights up, and the
display flashes between the temperature and Lo.
When the temperature reaches the idle range, the fan runs at the idle speed. The fan continues to run at the idle
speed until the temperature rises to the set point.

FC-1T-1VDC 5 / 8 32741000
When the temperature is between the set point and differential, fan speed increases or decreases proportionally
with the temperature.
When the temperature is at or above the differential, the fan runs at full speed.
When the temperature is above the high alarm, the alarm relay activates, the Alarm LED lights up, and the
display flashes between the temperature and HI.
To program the control
1. Press the encoder knob until Par displays.
2. Turn the knob clockwise until the LED for the setting you want to program is lit.
3. Press the knob to select the setting.
The control enters edit mode and the LED for the setting flashes.
4. Turn the knob clockwise to increase, or counterclockwise to decrease the value.
5. Press the knob to save the setting and leave edit mode.
The display shows par.
6. Repeat steps 2 to 5 for each setting you want to program.
7. When finished, press the knob to return to the temperature display.
Fan speed
Fan speed increases as the temperature rises, or decreases as the temperature falls.
The fan runs at idle speed. The temperature band between the idle range temperature
and the set point is sometimes called the “idle band”.
The fan is off when the temperature is below the idle range temperature.
The fan runs at full speed.
Differential
Idle range
Idle speed
Set point
Low alarm
High alarm
The alarm relay activates when the temperature is below the low alarm temperature.
The alarm relay activates when the temperature is above the high alarm temperature.

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Manual mode
Manual mode allows you to override the automatic settings. Manual mode is useful for testing equipment or other
special situations.
1. Press the encoder knob until Par displays.
2. Turn the knob clockwise until the LED for Alarm is lit.
3. Press the knob.
The control enters manual mode and the LED for Alarm flashes.
4. Turn the knob clockwise to increase, or counterclockwise to decrease the output.
5. Press the knob to leave manual mode.
The display shows par.
6. Press the knob to return to the temperature display.
Factory defaults
Setting
Default
Range/options
Stage 1 idle speed (%)
20
0 to 100 %
Stage 1 idle range (°F/°C)
80.0
-13 to 125°F (-25 to 51°C)
Stage 1 set point (°F/°C)
85.0
-13 to 125°F (-25 to 51°C)
Stage 1 differential (°F/°C)
86.5
-13 to 125°F (-25 to 51°C)
High temperature alarm (°F/°C)
95.0
Low temp alarm to 125°F (51°C)
Low temperature alarm (°F/°C)
80.0
-13°F (-25°C) to high temp alarm
Troubleshooting
When there is an alarm condition, the Alarm LED flashes, an error code displays, and the alarm relay activates.
When the condition goes away, the alarm relay deactivates and the Alarm LED switches off, but the message
continues to display until acknowledged by pressing the knob.
When there is a probe damage or short condition, the control operates at 20%.
If you are having a problem using the FC-1T-1VDC, check if the problem is described in the following table, and
then follow the directions for correcting the problem.

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Alarm code/problem
Possible cause
Possible solution
Hi
High temperature alarm

Ambient temperature is too high

High temperature alarm setting is too low

Increase ventilation/cooling.

Increase the high temperature alarm setting.
For more information, read
Program the FC-
1T-1VDC
on page 4.
Lo
Low temperature alarm

Ambient temperature is too low

Low temperature alarm setting is too high

Decrease ventilation/cooling, increase
heating.

Decrease the low temperature alarm setting.
For more information, read
Program the FC-
1T-1VDC
on page 4.
pd
Probe damage alarm

The temperature probe is damaged, missing,
or the connecting wire is broken. The
temperature probe circuit is open.

Check the wire between the control and the
probe. Wire damage can cause the alarm.

Replace or reconnect the temperature probe.
The control should recover automatically.
ps
Probe short alarm

The temperature probe is damaged. The
temperature probe circuit is closed.

Check the wire between the control and the
probe. Wire damage can cause the alarm.

Replace the temperature probe. The control
should recover automatically.
Power supply components blown
out, burn marks on boards and
components
Motors and fans slow down or stop

Power surge, brownout, or power outage

Avoid the problem in future by providing
proper voltage and surge protection for the
control.
No power/display

A circuit breaker at service panel is off or
tripped.

Reset the circuit breaker.

Incorrect incoming power wiring

Correct the wiring.
Display showing unusually high or
low temperature

The probe is not a Phason probe.

Remove the probe and then install a Phason
probe.

The extension cable connected to the
temperature probe is providing a poor
connection

Check the extension cable connection and re-
solder it if necessary.

Damaged probe

Replace the temperature probe.

Variable fan runs at maximum

Incorrect wiring

Correct the wiring. For more information,
read Connect equipment on page 3.

Idle speed is too high

Decrease the idle speed setting. For more
information, read
Program the FC-1T-1VDC
on page 4.

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Alarm code/problem
Possible cause
Possible solution

Variable fan not running

Incorrect wiring

Correct the wiring. For more information,
read Connect equipment on page 3.

Idle
speed setting is too low

Increase the idle
speed setting. For more
information, read
Program the FC-1T-1VDC
on page 4.

Idle
range temperature setting is too high

Decrease the idle
range temperature setting.
For more information, read
Program the FC-
1T-1VDC
on page 4.

Temperature set point is above room
temperature

Adjust the set
point
to the desired
temperature. For more information, read
Program the FC-1T-1VDC
on page 4.

No power to the fan

Switch on the power.

Faulty fan

Replace the equipment.

Circuit breaker open

Reset the breaker.
Service and technical support
Your dealer will be happy to answer all technical questions that will help you use the FC-1T-1VDC. Before
contacting them, check the following:
Read this manual for information about the feature with which you are having trouble.
If you are having a problem using the FC-1T-1VDC, look in Troubleshooting on page 6.
and follow the directions for correcting the problem.
If you still have a problem with the FC-1T-1VDC, collect the following information:
The serial number
Any messages displayed by the FC-1T-1VDC
A description of the problem is
A description of what you were doing before the problem occurred
Phason controls are designed and manufactured to provide reliable performance, but they are
not guaranteed to be 100 percent free of defects. Even reliable products can experience
occasional failures and the user should recognize this possibility.
If Phason products are used in a life-support ventilation system where failure could result in
loss or injury, the user should provide adequate back up ventilation, supplementary natural
ventilation, or an independent failure-alarm system. The user’s lack of such precautions
acknowledges their willingness to accept the risk of such loss or injury.
PhasonControls.com [email protected] International: 204-233-1400 Toll-free North America: 800-590-9338