Minebea CSA-521 User manual

Transmitter
CSA-521
Instruction Manual
EN294-1145-G

I
FOREWORD
Thank you very much for your purchasing our Transmitter CSA−521.
This manual explains installation procedures and connecting method and also operating
method for the Transmitter CSA−521. Make use of it properly after reading through the
manual carefully.
Be sure to deliver the manual to the end user. Moreover, the end user should keep the
manual at hand after reading it over.

II
Marks and arrangements used in this manual
The following marks are attached to the explanation on the matters that indicate “Don’t do
this.”, “Take care.” and “For reference”.
Be sure to read these items where these marks are attached.
Warning ●Warning may cause injury or accident that may harm to the operator.
Don’t do these things described here.
●Caution during operation and working.
Be sure to read the item to prevent malfunction.
Mark during operation.
●Press the switch.

III
For safe operation
Be sure to read this instruction manual before use.
1. Installation place
●Use the instrument where the temperature/humidity specifies with the range as follows：
Environmental temperature ：−10 ℃to 50 ℃
Environmental humidity ：Less than 85 %R.H. (Non condensing)
(1) Location where installation is not allowed.
Warning ●Don’t locate the instrument on the places as follows :
It may cause an unexpected faulty in the instrument.
DDo not locate the instrument in direct and/or high temperature area.
DDo not use the instrument in a high humid area.
DDo not install the instrument where there are vibrations and shocks.
DDo not use the instrument where there is excess of dusts and fine particles.
DDo not use the instrument where there are corrosive gas and salt and like
that.
DDo not install the instrument where there is rapid change of temperature
and humidity.
DDo not install the instrument near the devices that are magnetized or
generate an electromagnetic field.
DDo not install the instrument where the instrument may be affected by
radioactivity or radial rays.
DAvoid the location where chemical reaction may take place such as in a
laboratory, or like that.

IV
(2) Installation
●When installing the instrument, install as referring to the following figures and secure
the space around the instrument.
Each dimensions of the instrument and required dimensions for the environmental
spaces are as follows:
Outline dimensions
Unit：mm
Surface of board Side face
Height of board
Max. 20 1.6
80
70
60 70

V
2. Power supply
Warning ●Be sure to check that the power supply is off in connecting each cable. If the work is
done while the power is on, there may have the case that electric shock to the operator
or even may have damage to the instrument.
Warning ●Before supplying the power, check that the indication of power supply voltage
/specifications for the instrument and the power going to supply should be the same.
If they are not equal, contact us.
If you use the instrument without checking them, it may cause a damage in the
instrument or electric shock to the operator.
●Earth wire should be grounded securely.
When earth wire is not connected, it may cause a malfunction of the instrument or
electric shock to the operator.
3. Application note
Warning ●Before using a new instrument or exchanging the strain gage applied transducer for a
new one, be sure to make calibration. If calibration will not be made, the correct
measuring results may not be obtained nor which may cause malfunction in the
instrument and there may exist damage in peripheral equipments.
Besides, even though calibration has been made, there may occur the similar case when
the results are not correct, so make calibration, again.
Warning ●In case of using the instrument, check that the connections are executed properly. If not
connected properly, the correct measuring result will not be obtained, nor it may cause
malfunctions of the instrument, damage to the peripheral equipments or even more
serious accidents.
Warning ●When change of setting is made carelessly on the instrument during measurement,
correct measured results may not be obtained and it may cause malfunction in the
instrument and even have the possibility of damage in peripheral instruments.
Warning ●Do not shock the instrument such as throwing something on it.
If neglected, it may cause destruction of the parts and damage to the electrical circuits.

VI
History of revision
Date
Instruction manual No.
Details of revised point
Dec. 2001
DRW. NO.EN294-1145
First Version
Apr. 2002
DRW. NO.EN294-1145-A
Due to ECN No.FN02−02045
−Addition −
4−2−2. 3. Warning “～. The input range of this
instrument is 0.5 mV/V to 1.5 mV/V.”
6−1. “ ・Input range 0.5 mV/V to 1.5 mV/V”
−Correction −
6−2. ・Weight Approx.100 g →Approx.50 g
Apr. 2005
DRW.No.EN294-1145-B
Due to ECN No.FN05−02035
−Addition −
At the warning column in the wiring section, the clause of
”As there is a case which standard wiring color is different,
please confirm the inspection data sheet of the load cell
being used.” is added.
Feb. 2010
DRW.No.EN294-1145-C
Due to ECN No.FN10−02026
−Change −
Front cover’s logo is changed.
Oct. 2010
DRW.No.EN294-1145-D
Due to ECN No.FN10−02140
−Change −
Minebea logo is changed.
Jun. 2012
DRW.No.EN294-1145-E
Due to ECN No.FN10−02140−D
−Change −
Minebea logo is changed.
Feb. 2013
DRW.No.EN294-1145-F
Due to ECN No.FN13−02032
−Addition −
6−3.Standard specifications at the time of shipment
“10 V output at the input of 1 mV/V”
Feb. 2018
DRW.No.EN294-1145-G
Due to ECN FN17-02017
・Delete the company name in the cover page.
・Delete the company name in the contents.

INDEX
Forwards Ⅰ....................................................................
Marks and arrangements used in this manual Ⅱ....................................
For safe operation Ⅲ.............................................................
1. Installation place Ⅲ.........................................................
2. Power supply Ⅴ............................................................
3. Application note Ⅴ..........................................................
History of revision Ⅵ............................................................
1. General 1.................................................................
2. Name and function of each point 1..........................................
3. Connecting method 2......................................................
3−1. Layout of the terminal boards 2.........................................
3−2. Note on connection 2...................................................
3−3. Connection 3..........................................................
3−3−1. Connection with strain gage applied transducers 3...................
3−3−2. Connection of voltage output 5....................................
3−3−3. Connection with the power supply and the earth 6...................
4. Calibration procedures 7...................................................
4−1. Preparations 7........................................................
4−2. Calibration procedures 7...............................................
4−2−1. Calibration by the actual load 7....................................
4−2−2. Electronic calibration by CALIB input 8............................
4−3. Zero adjustment by mounting resistance 10................................
4−3−1. Mounting the resistance 10........................................
4−3−2. Check the initial load 11...........................................
5. Trouble shooting 13........................................................
5−1. Execute trouble shooting 14.............................................
6. Specifications 19...........................................................
6−1. Specifications 19........................................................
6−2. General specifications 19................................................
6−3. Standard specifications at the time of shipment 19.........................
6−4. Accessories 19..........................................................
7. Warranty 20................................................................
7−1. Warranty 20...........................................................
7−2. Repair 20..............................................................