EYC FTS34 User manual

eYc FTS34/35
Operation Manual
eYc FTS34/35
Thermo Air Velocity Transmitter

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Thermo Air Velocity Transmitter
Air Velocity
Content
I. Security considerations .......................................................................P.02
II. Connection ...........................................................................................P.03
1. Analog diagram ...........................................................................P.03
2. RS-485diagram ............................................................................P.0 3
3. Analog + RS-485 diagram ............................................................P.03
III. DIP Switch ............................................................................................P.04
1. Zero Button ...................................................................................P.05
2. RS-485 & Modbus ......................................................................P.05
IV. Software and calibration operation step ............................................P.05
V. Inspection and maintenance ...............................................................P.09

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Thermo Air Velocity Transmitter
Air Velocity
I. Security considerations
Please read this Specification carefully, prior to use of this, and keep the manual properly,
for timely reference.
Solemn Statement：
This product can not be used for any explosion-proof area.
Do not use this product in a situation where human life may be affected.
eYc-tech will not bear any responsibility for the results produced by the operators！
Warning!
Installation and wiring must be performed by qualified personnel in accordance with
all applicable safety standards.
This product must be operated under the operating conditions specified in manual to
prevent equipment damages.
Please using the product under the ordinary pressure, or it will influence safe problem.
This product must be operated under the operating condition specified in this manual
to prevent equipment damages.
This product must be operated under the normally atmospheric condition to prevent
equipment damages.
To prevent products damage, always disconnect the power supply from the product
before performing any wiring and installation.
All wiring must comply with local codes of indoor wiring and electrical installation
rules.
Please use crimp type terminal.
To prevent personal injury, do not touch the moving part of product in operation.
It may cause high humidity atmosphere during the product was breakdown. Please
take safety strategy.
CE
Emissions
EN 61326-1：2006 EN 55011：2009/A1：2010
Immunity
EN 61326-1：2006 EN 61000-4-2：2009 EN61000-4-3：2006/A2：2010 EN61000-4-8：2010

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Thermo Air Velocity Transmitter
Air Velocity
II. Connection
1.Analog diagram
2.RS-485 diagram
3.Analog + RS-485 diagram

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Thermo Air Velocity Transmitter
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III. DIP Switch
For FTS34/35 products, the setting status of DIP switch will be read by
software while power on, and this reading action will not happen later on.
Thus in order to read the DIP switch status again by software, the user must
to reboot again if re-setting the DIP switch. The function of DIP Switch_2 ... 8
only be effective while setting the DIP switch_1 as “On”.
While setting the DIP switch_1 as “On”, some of the “Setting” & “Output”
features will be disabled on UI. In other word, these features are controlled
by DIP switch. Otherwise, the features on UI can be configured if set the DIP
switch_1 as “Off”.

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Thermo Air Velocity Transmitter
Air Velocity
1.Zero Button
This button allows the user to set the current air velocity to “Zero”, it is required to press
the button for 3 ... 5 seconds, and the air velocity adjusted to “Zero” after release this
button. The user will observe the LED flashed for a few seconds for reminding the user.
2. RS-485 & Modbus
FTS34/35 integrate a RS-485 interface for digital communication as an option feature.
Based on Modbus protocol makes the general convenience on PLC, HMI and PC
connection. For Modbus protocol information please download the file from website.
Besides the PLC, HMI application, the user software provide the device setting and data
logging function, it also can free download from website.
Technical data：
Max. network size：32 transmitters
Communication：with COM-Port (Serial interface) of PC
Max. network expansion：1200 m(3937 ft）total length, at 9600 Baud
Transmission rate：9600 / 19200 / 38400 / 57600 / 115200 Baud
Parity：None, Even, Odd
Data length：8 bit
Stop bit：1 or 2 bit
Factory default station address= 1, Data format= 9600, N81
IV.Software and calibration operation step
Free installation program：eYc-FTS34_35FTM84_85-UI-20190701-1.2.7.exe (※Please use
installation program when free program doesn't execute. The UI version is mainly based
on the eYc-tech website.)
a. Operating system requirements：above Windows XP
b. Click Setup to install eYc-FTS34_35FTM84_85-UI-20190701-1.2.7
1. Hardware connection：Connect the FTM34/35 to PC by USB to RS-485 converter.

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Thermo Air Velocity Transmitter
Air Velocity
2. Check the COM port number from Device Manager in Computer Management.
3. Open the FTS UI, go to function "Interface", click item "Config" and then setting COM
port, BAUD rate and data format, pressed "Scan" bottom for scan devices and "Apply"
for connection.
4. Scan RS-485 connection
Open the UI, go to function "Interface", click item "Config" and then setting COM port,
BAUD rate and data format, pressed "Scan" bottom for scan devices and "Scan" for
connection.
Select Station ID and click "CLOSE AND EXPORT”Click Apply

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Thermo Air Velocity Transmitter
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5. Setting on analog output
Quantity：Flow Velocity, Temperature
Response rate：0 ... 100, 100：filter off, 90：filter = 60 second, 80：filter = 120 second,
etc.
Analog type：0 ... 20 mA / 4 ... 20 mA / 0 ... 1 V / 0 ... 5 V / 1 ... 5 V / 0 ... 10 V /
2 ... 10 V
Range for Upper and Lower
6. Setting on RS-485 and offset adjustment
Station ID：1 ... 247
Baud rate：9600 / 19200 / 38400 / 57600 / 115200
Data Frame：None-8Bit-1Stop / None-8Bit-2Stop / Even-8Bit-1Stop / Even-8Bit-2Stop /
Odd-8Bit-1Stop / Odd-8Bit-2Stop
Flow Offset adjustment
Temperature Offset adjustment

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Thermo Air Velocity Transmitter
Air Velocity
7. Data display and logging
Flow velocity unit：[m/s], [ft/s], [km/h], [mph], [knot]
Temperature unit：°C / °F
Export file：*.CSV
8. Device information

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Thermo Air Velocity Transmitter
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V. Inspection and maintenance
1. Maintenance
Since this product is inspected and calibrated for high accuracy at the factory before
shipment, no calibration on the installation site is necessary when this product is
installed. For inspection and maintenance follow the instructions below：
Periodic inspection
Periodically inspect this product for its sensing accuracy, and clean the cover. Set the
period between inspections based on atmospheric dust and other contaminants in the
installation environment.
2. Troubleshooting
Sensor maintenance
Do not damage sensor surface during the maintenance process.
Troubleshooting
If any problem occurs during operation, refer to the table below for appropriate
solutions.
Problem
Cleck items
Soluations

No output
Unstable output

Disconnected wiring
Loose wiring
Power supply voltage
Sensor damages

Re-perform wiring
Crew on terminal tightly or replace wires
Replace the sensor

Slow response to
output
Errow in output

Moisture /condensation on the
product
Check installed location
Check installed angle
Check dust and contamination
on the sensor

Remove the sensor and filter. Dry
power-off state sensor in clean air
seasoning
Refer to the section
Align measurement head with flow
direction
Cleaning the filter
Changing the filter
Calibrate
Replace the sensor