Minebea CSA-522B Instruction Manual

TRANSMITTER
CSA-522B

Instruction Manual

EN294-1348-D

II

I

Warning may cause injury or accident that may harm to the operator。
Don’t do these things described here.

It is a description when the occourence only of the assumption of danger by which the user owes injury when handling is mistaken, and the
material damage is assumed。

It is attention and a limitation in the operation and work
Be sure to read the items to prevent the malfunction.

Forward

Thank you very much for purchasing Minebea’s Transmitter, model CSA-522B. This
manual explains installation procedures and connecting method and also operating
method for the transmitter. Make use of it properly after reading through the manual
carefully. This manual is intended for the technical experts to read.

Marks and arrangements used in this manual

The following marks are put 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

Caution

II

The temperature and humidity must use it in the place within the following ranges.

Do not set up this instrument in the following places. It might cause an unexpected faulty in the instrument.

For safe operation

Be sure to read this instruction manual before use.

1. Installation place

Caution

● Environmental temperature : －10 ℃ to 50 ℃

● Environmental humidity : 85 %RH or less (Non condensing)

Warning

① Location where installation is not allowed.

● Don’t locate the instrument in direct sunshine and/or high temperature area.

● Don’t use the instrument in the high humid area.

● Don’t install the instrument in the place with the vibrations and shock.

● Don’t use the instrument where there is excess of dusts and fine particles.

● Don’t use the instrument where there are corrosive gas and salt and like that.

● Don’t install the instrument where there is rapid charge of temperature and humidity.

● Don’t install the instrument near the devices that are magnetized or generate an

electromagnetic field.

● Don’t install the instrument where the instrument may be affected by radioactivity or radial
rays.

● Avoid the location where chemical reaction may take place such as in a laboratory, or like that.

III

Install based on the following sizes to set up this instrument, and secure the space for surroundings of this container.

Unit：mm

Front

Side

Rear

Panel cut size

or

2-φ4

（20）

② When you set up this instrument

Warning

Each dimensions of the instrument and required dimensions for the environmental spaces are as
follows:

IV

Install each cable while turned off the power supply. Might it get an electric shock, and this instrument be damaged when working with the
power supply enters.

Confirm the indication of the power supply voltage of the instrument and the specifications are corresponding to the supplied power supply
before turning on the power supply. Consult with MINEBEA when not matching. There is danger of causing damage and the electric shock of
this instrument when using it like the uncertainty.

Groundline should be connected securely. When groundline is not connected, it may cause a malfunction of the instrument or el ectric shock to
the operator

Before this instrument is newly used, or when the strain gage applied transuducer is exchanged with a new one, please execute the calibration.
If not calibrating, it may cause not obtaining the correct measurement result, or a malfunction in the instrument and there i s a possibility of the
damage of peripherals. Moreover, there is a similar possibility that the result is incorrect even if the calibration has been already made. Please
take the calibration again.

Please confirm connecting wires is correctly executed when you use this instrument. If it is not connected correctly, it may cause the
malfunctions on the instrument, and the damage to the peripheral equipments or even worse serious accidents.

CautionIt causes not obtaining a correct measurement result, and the malfunction when the setting change is carelessly executed while
measuring it with this instrument and there is a possibility of the damage of peripherals.。

Please do not give the impact such as throwing the thing at this instrument.
There is a possibility of causing the malfunction on this instrument, or causing the damage of the electric circuit.

2. Power supply

Warning

Warning

Caution

3. Application note

Caution

Caution

Caution

Caution

V

Please observe the following conditions strictly when this instrument suits the above−mentioned standard.
If neglected, there is a possibility of not suiting the above−mentioned standard.

4. CE conformity standard

This instrument has suited the following standard.
EN61326−1：2006
“Electrical equipment for measurement, control, and laboratory use − EMC requirements”
“Immunity test requirements for equipment intended for use in industrial locations”

EN61010−1：2001
“Safety requirements for electrical equipment for measurement, control and laboratory use”

The operating condition to conform this standard is as follows :

Caution

4-1. Place of installation

 Please set up this instrument in the shielded case or control panel where EMC measures are

given.

4-2. Wiring

① Shield processing

 Please make sure to shield all the signal cable by using the shielded cable or using the conduit

piping including the storage case and control panel.

 Please make sure to shield the power cable by using the conduit piping including the storage case

and control panel.

② Grounding

 Please make sure to apply the grounding through the case and control panel where EMC

measures are given with protective earth terminal.

VI

Date

Manual No.

Revision reason (Contents)

2007/06

DRW. NO.EN294-1348

First version

2009/06

DRW. NO.EN294-1348-A

Due to ECN.FN09-02035
Changed CE conformity standard EN61326-1:2006

-Addition-

“Immunity test requirements for equipment intended for use in
industrial locations”

2016/10

DRW. NO.EN294-1348-B

Due to ECN.FN10-02121A

・Change length of terminals (15) to (20)
・Minebea logo is changed

Due to ECN.FN16-02057
・「 MINEBEA Co., Ltd. Measuring Components Business Unit」
on the cover is deleted

2016/10

DRW. NO.EN294-1348-C

Due to ECN.FN10-02121B

・Delete the extra page number .「next page of cover and table

of contents page number Ⅱ」

・Repair the position of word .「Warning」、「！」
・Delete the extra white page .「next page of history of

revision」

・Add the white page .「next page of table of contents」

2016/10

DRW. NO.EN294-1348-D

Due to ECN.FN10-02121C

・Delete the extra white pages .
「next page of History of revision」「next page of Index」

History of revision

Index

FORWARD ........................................................................................................................................................ I

MARKS AND ARRANGEMENTS USED IN THIS MANUAL ........................................................................ I

FOR SAFE OPERATION ................................................................................................................................ II

1. INSTRATION PLACE ............................................................................................................................................................................................... II

2. POWER SUPPLY ................................................................................................................................................................................................... IV

3. APPLICATION NOTE ............................................................................................................................................................................................ IV

４. CE CONFORMITY STANDARD ........................................................................................................................................................................... Ⅴ

HISTORY OF REVISION ..............................................................................................................................VI

１． EACH FUNCTION AND NAME .............................................................................................................1

１-１. FRONT PANEL .................................................................................................................................................................................................. 1

１-２. REAR PANNEL .................................................................................................................................................................................................. 2

２． CONNECTING METHOD .......................................................................................................................3

２-１. ALLOCATION OF THE TERMINALS ................................................................................................................................................................ 3

２-２. NOTES ON CONNECTIONS.............................................................................................................................................................................. 4

２-３. CONNECTION WITH STRAIN GAGE APPLIED TRANSDUCER ...................................................................................................................... 4

２-４. CONNECTION WITH POWER SUPPLY AND GROUND ................................................................................................................................... 6

２-５. CONNECTION WITH ANALOG OUTPUT.......................................................................................................................................................... 7

２-６. CONNECTION WITH THE AUTO ZERO BY THE EXTERNAL CONTROL INPUT ........................................................................................... 8

３． CALIBRATION ........................................................................................................................................9

３-１. CALIBRATION METHOD ................................................................................................................................................................................... 9

３-２. CALIBRATION PROCEDURE .......................................................................................................................................................................... 10

４． FUNCTION AND OPERATION ............................................................................................................ 13

４-１. SETTING OF ZERO ADJUSTMENT ............................................................................................................................................................. 13

４-２. SETTING OF GAIN ADJUSTMENT ............................................................................................................................................................... 13

４-３. SETTNG OF CALIB VALUE.......................................................................................................................................................................... 13

４-４. SETTING OF FREQUENCY RESPONSE ......................................................................................................................................................... 13

４-５. SETTING OF BRIDGE POWER SUPPLY VOLTAGE ...................................................................................................................................... 13

５． HOW TO CHANGE THE FUSE ............................................................................................................ 14

６． OPTION ................................................................................................................................................. 15

６-１. AUTO ZERO (CSA522B-P99) .................................................................................................................................................................. 15

６-２. POWER SUPPLY VOLTAGE AC110 V (CSA522B-P61) ...................................................................................................................... 16

６-３. POWER SUPPLY VOLTAGE AC200 V (CSA522B-P63) ...................................................................................................................... 16

II

６-４. POWER SUPPLY VOLTAGE AC220 V (CSA522B-P64)...................................................................................................................... 16

７． TROUBLE SHOOTING ......................................................................................................................... 17

８． SPECIFICATIONS ................................................................................................................................ 23

８-１. SPECIFICATIONS ............................................................................................................................................................................................ 23

８-２. GENERAL SPECIFICATION ............................................................................................................................................................................ 23

８-３. ACCESSORIES ................................................................................................................................................................................................ 23

８-４. OPTIONS ......................................................................................................................................................................................................... 24

８-５. STANDARD SPECIFICATION AT THE SHIPMENNT ..................................................................................................................................... 24

９． WARRANTY .......................................................................................................................................... 25

９-１. WARRANTY ..................................................................................................................................................................................................... 25

９-２. REPAIR ............................................................................................................................................................................................................ 25

1

① POWER LED

③ ZERO coarse control switch

② ZERO fine control trimmer

④ GAIN fine control trimmer

⑤ GAIN coarse control switch

⑥ CALIB switch

⑦ FILTER switch

⑩ AUTO ZERO LED

⑨ MONITOR terminal

⑧ GV switch

⑫ AUTO ZERO OFF switch

⑪ AUTO ZERO ON switch

1. Each function and name

1-1. Front panel

① POWER LED

It lights by turning on the power supply (POWER switch ON).

② ZERO Fine control trimmer

It is a trimmer for the fine control of zero.

③ ZERO Coarse control switch

It is a switch for the coarse control of zero. Some ±0.3mV/V input is shifted.

④ GAIN Fine control trimmer

It is a trimmer for the fine control of amplification degree.

⑤ GAIN Coarse control switch

It is a trimmer for the coarse control of amplification degree. It is 1000 times in L, 2000 times in M,
and 3000 times in H.

⑥ CALIB switch

It is a switch that turns the CAILB value on and off.

⑦ FILTER switch

It is a switch that changes the frequency response.
It is 25 kHz in OFF, and 1 Hz or 30 Hz in ON. (Change with the DIP switch on the circuit board.)

⑧ GV switch

The power supply voltage of the bridge to the strain gage applied transducer is selected.

⑨ MONITOR terminal

It is a terminal to monitor the output voltage value.

⑩ AUTO ZERO LED (Options)

LED lights while auto zero executions

⑪ AUTO ZERO ON switch (Options)

The analog output when pushing is adjusted to 0 volt.
Please release the auto zero when you calibrate.

⑫ AUTO ZERO OFF switch (Options)

Auto zero is released.

2

① Termnal board

③ I-OUT SPAN fine control trimmer

② I-OUT ZERO fine control trimmer

④ protective

earth terminal

1-2. Rear pannel

① Terminal board

The vaious strain gage applied transducers like load cell, etc., voltage output, current output,
external control input (Option), grounding wire and AC power supply are connected.

② I-OUT ZERO fine control trimmer

It is the fine control trimmer of the current output (DC4 mA).

③ I-OUT SPAN fine control trimmer

It is the fine control trimmer of the current output (DC20 mA).

④ Protective earth terminal

Connect the grounding line to suit the CE Conformity Standard.
Do not connect excluding the grounding wire.

3

Name of terminal

Description

Usage

A

Bridge power supply(＋)

Strain gage applied transducer

C

Bridge power supply (－)

D

Amplifier input (＋)

B

Amplifier input (－)

E

Shield

A.G.

Analog ground

For check

F.G.

Frame groung

F.G.

Frame groung

F.G.

Frame groung

V ＋

Voltage output terminal(＋)

Voltage output

V －

Voltage output terminal (－)

I ＋

Current output terminal (＋)

Current output

I －

Current output terminal (－)

A/Z ON

Terminal for AUTO ZERO ON control

External control input

(Option)

A/Z OFF

Terminal for AUTO ZERO OFF control

A/Z COM

Common for controling auto zero

N.C.

No use

Do not use.

L

Power supply input terminal (L)

Power supply

N

Power supply input terminal (N)

Protective earth terminal

● The terminal F.G. and the terminal E are connected internally.

● The terminal A.G. and the terminal V-OUT (-), the terminal I-OUT (-) are connected internally.

2. Connecting method

2-1. Allocation of the terminals

4

Width of crimp type terminal lugs

Suitable crimp type terminal lugs

6.0 mm or less

1.25-3 or Y-type 1.25-3.5

● When tension load is applied with the application of tension type or universal (compression / tension) type of load cell, and output of “+”
direction is required, please replace and connect "Amplifier input +” and "Amplifier input –”.

● When the total length of cable specifies more than 30 m, the accuracy may be out of warranty because the resistance of cable makes the
input voltage of the instrument decreased.

● When the length of cable is applied more than 10 m, or when the system is using the zener barrier, the CALIB value is not applicable.

● When this instrument suits the CE standard, please make sure to shield the signal cable by mounting this in the storage case or control

panel where EMC measures are given with protective earth terminal.

2-2. Notes on connections

● Please go after turning off the power supply without fail when you connect wires.

● Please do not energize the power supply until the installation is completed.

● Keep the connecting cable with the instrument away from the noise source like power supply

line and I/O line for control as far as possible.

● Conduit wiring should be the type of exclusive one, and avoid using with another line together.

● Please connect the earthing cable securely. The earthing should be D class with single earth.

Don’t share with the earth of power supply system.

● The crimp type terminal lugs that suits the terminals of this instrument is as shown in the table
below.

2-3. Connection with strain gage applied transducer

① Case : Connection with one point of strain gage applied load cell

5

● When tension load is applied with the application of tension type or universal (compression / tension) type of load cell, and output of “+”
direction is required, please replace and connect "Amplifier input +” and "Amplifier input –”.

● When the total length of cable specifies more than 30 m, the accuracy may be out of warranty because the resistance of cable makes the
input voltage of the instrument decreased.

● When the length of cable is applied more than 10 m, or when the system is using the zener barrier, the CALIB value is not applicable.

● When this instrument suits the CE standard, please make sure to shield the signal cable by mounting this in the storage case or control

panel where EMC measures are given with protective earth terminal.

② Case : Connection with 2 to 4 points of strain gage applied transducers.

Plurality of of the strain gauge applied transducers might be connected parallel.
The parallel connection can be easily done by using optional SB-310 and SB-320 (Summing

type junction box).

6

● Connection with power supply and ground should be made securely as the figure indicates and also should be used within the specified
condition of power supply.

● The grounding for the instrument should be the D class with single ground. If negrected, it may cause an unexpected malfunction due to the
effects of noise from the other equipment.

● GND terminal and F.G. terminal is connected with the frame of the instrument.

● When this instrument suits the CE standard, please execute the single ground with protective earth terminal.

D class with single ground

AC100 V
（AC90 V to AC110 V）

2-4. Connection with power supply and ground

The connection with power supply and ground should be made as follows:
Beside, the grounding should be the D class with single ground.

Power supply voltage AC100 V (Permisible variable range AC90 V to AC110 V)
Power supply frequency 50/60 Hz
Power consumption Approx. 15 VA (without any options at AC100 V)

* When the power supply is AC110 V (CSA522B-P61), AC200 V (CSA522B-P63) or AC220 V
(CSA522B-P64), please refer the paragraph 6-2, 6-3 and 6-4.

Caution

7

● Please use the shielded cable for the connection with analog output, and connect the shield with F.G. terminal of the terminal block.
There is a possibility of causing the malfunction by the influence of the exogenous noise etc. when not connecting it.

● When this instrument suits the CE standard, please make sure to shield the signal cable by mounting this in the storage case or control
panel where EMC measures are given with protective earth terminal.

V

A

DC0 V to DC10 V

Load resistance 500Ω or more

＋

－＋－

Shield

Shield

Load resistance 510Ω or less

2-5. Connection with analog output

The connection with analog output should be made as follows:

8

● Please use the shielded cable for the connection with analog output, and connect the shield with F.G. terminal of the terminal block.
There is a possibility of causing the malfunction by the influence of the exogenous noise etc. when not connecting it.

● When this instrument suits the CE standard, please make sure to shield the signal cable by mounting this in the storage case or control
panel where EMC measures are given with protective earth terminal.

2-6. Connection with the auto zero by the external control input

“A/Z ON” and “A/Z OFF” of the external control input are connected with “COM” terminal by using
the point of contact or open collector connection as shown in the figure below. (Effective when the
optional CSA522B-P99 is installed.)

Please refer the paragraph 6. for the function of each input

9

● Before using the new instrument or after exchanging the strain gage applied transducer with a new one, be sure to make calibration. If
calibration is not made, the correct measurement results may not be obtained. or it may cause malfunction to the instrument and it may
damage the peripheral equipment. Moreover, even if calibration has made, there may occur the similar case as above when the result is not
correct. So, make precise calibration again.

● When the auto zero option (CSA-522B-99) is applied, please calibrate with pushing the A/Z OFF switch, or shorten between A/Z OFF and
A/Z COM for about 100 ms or more.

● Please make the calibraton while the CALIB switch turns off.

● The accuracy of calibration by CALIB input is 1/500 or so.

3. Calibration

3-1. Calibration method

The load calibration method of this instrument has two kinds of the following.

① Calibration with actual load
② Electrical calibration by the CALIB input

Caution

10

ZERO adjustment

SPAN adjustment

Check the ZERO point

Connect with the strain
gage applied transducer

Energizing for 10 min. after

turning on the power.

Complete

3-2. Calibration procedure

４-６. Calibration by actual load

Step 1 Connect the instrument with strain gage applied transducer.

Step 2 To stabilize this instrument and strain gage applied
transducer, please put it in the condition of energizing for
about 10 min.

Step 3 Please set the condition of the initial weighing (tare weight)
on the strain gage applied transducer.

Please cancel the initial weight (tare) if necessary with the
ZERO coarse control switch.

Some ±0.3 mV/V input shifts on the input conversion by the
ZERO coarse control switch.

Take the fine adjustment to set the voltage output value to

0.000 V or the current output value to 4.000 mA by ZERO fine
control trimmer.
The input of ±0.3 mV/V of input conversion can be changed by
ZERO fine control trimer.

When the voltage output is used together with the current
output, the voltage output is previously adjusted, and then the
current output is adjusted by I-OUT ZERO fine control trimmer
in the rear panel.

Step 4 Put the preliminary test force such as weights (Please use the
one near the preliminary test force as much as possible.) on the
strain gage applied transducer, and then set by GAIN coarse
control switch to become the voltage output value or the current
output value to be set.
The GAIN coarse control switch becomes 3 000 times at H,
2 000 times at M and 1 000 times at L.

Adjust the GAIN fine control trimmer to become the voltage
output value or the current output value to be set.

It comes in changeability by the GAIN fine control trimmer
the range of 1/1 to 1/4 of the full scale.

When the voltage output is used together with the current
output, the voltage output is previously adjusted, and then
adjust the current output by I-OUT SPAN fine control trimmer
in the rear panel.

Step 5 Remove the preliminary test force put in step 4., and confirm
that the voltage output value becomes 0.000 V or the current
output value becomes 4.000 mA.

It returns to step 3 when not becoming it.

Step 6 It is an end of the calibration by an actual load.

11

ZERO adjustment

SPAN adjustment

Energizing for about 10 min.

after turns on the power.

Connection with strain

gage applied transducer

４-７. Calibration by CALIB input

Step 1 Connect this instrument with strain gage applied
transuducer.

Step 2 To stabilize this instrument and strain gage applied
transducer, please put it in the condition of energizing for
about 10 min.

Step 3 Please set the condition of the initial weighing (tare weight)
on teh strain gage applied transducer.

Please cancel the initial weight (tare) if necessary with the
ZERO coarse control switch.

Some ±0.3 mV/V input shifts on the input conversion by the
ZERO coarse control switch.

Take the fine adjustment by using the ZERO fine control
trimmer to set the voltage output value to 0.000 V, or set the
current output value to 4.000 mA.
By using the ZERO fine control trimmer, the input of ±0.3
mV/V is variable in input conversion.

When the voltage output is used together with the current
output, adjust the voltage output previously, then in the next,
adjust the current output by using the fine control trimmer
I-OUT ZERO in the rear panel.

Step 4 Turn on the CALIB switch.
The output that corresponds to the input of 0.25 mV/V
±0.000 25 mV/V and 1.0 mV/V±0.001 mV/V is obtained.

The voltage output value or the current output value which
corresponds to CALIB value is calculated from the rated output
value and the maximum load value of the strain applied
transducer connected, and the voltage output value or the
current output value at that time.

Adjust the voltage output value or the current output value to
become a calcurated value by GAIN coarse control switch and
GAIN fine control trimmer.

When the voltage output is used together with the current
output, adjust the voltage output according to the above
procedure previously, and then, adjust the current output by
I-OUT SPAN fine control trimmer in the rear panel.

[Example of calcurating output value that corresponds to
CALIB value]

It is the case that the voltage output of 10.000 V is required
at the maximum load of 0.34 t when 1 point of load cell with
the rated load of 1 ton and the rated output is 3 mV/V is
applied showing as follows.

Rated capacity of load cell 1 t
Rated output of load cell 3 mV/V
The maximum load value 0.34 t
Voltage output valu at the maximum load. 10.000 V
CALIB value 1 mV/V

12

● Please make the rated output value of the load cell used in the caliculatoin with the value written in the individual inspection data sheet.

Confirm ZERO point

＝

＝ ＝

＝

Completing calibration

＝

(Load cell output value at the maximum load)
(Rated output value of load cell)×(The maximum load value)
(Rated load value of load cell)
3 mV/V×0.34 t
1 t

1.02 mV/V

(Voltage output value corresponging to CAL value)
(Voltage output value at the maximum load)×(CALIB value)
(Load cell output value at the maximum load)

10.000 V×1 mV/V

1.02 mV/V
≒9.804 V
Accordingly, the voltage output value at turning on the

CALIB switch is adjusted to 9.804 V by GAIN fine control
trimmer.

Step 5 Turn of the CALIB switch.
Confirm to the voltage output value becomes 0.000 V or the

current output value becomes 4.000 mA.
Otherwise, it returns to step 3.

Step 6 The calibration by CALIB input is completed.

Caution

13

ZERO coarse control switch

Variable range by ZERO fine control trimmer

＋

Approx.0.3 mV/V to Approx.0.6 mV/V

0

Approx. -0.3 mV/V to Approx.0.3 mV/V

―

Approx.-0.6 mV/V to Approx.-0.3 mV/V

GAIN coarse

adjustment switch

Variable range by GAIN

fine control trimmer

Sensitivity

M

0.5 mV/V to 2.0 mV/V

Approx. 500 times to Approx. 2 000 times

H

0.35 mV/V to 1.4 mV/V

Approx. 750 times to Approx. 3 000 times

L

1.0 mV/V to 4.0 mV/V

Approx. 250 times to Approx. 1 000 times

CALIB switch

Input conversion value to be output

0.25 mV/V

0.25 mV/V±0.000 25 mV/V

OFF

0 mV/V

1.0 mV/V

1.0 mV/V±0.001 mV/V

FILTER switch

Frequency response

Attenuation rate

ON

1 Hz or 30 Hz

-12 dB/oct bessel type

OFF

25 kHz

-6 dB/oct

G.V. switch

Bridge power supply voltage

5 V

5 V±0.15 V

10 V

10 V±0.3 V

2.5 V

2.5 V±0.075 V

● Please execute the calibration again when the bridge power supply voltage is changed.

4. Function and operation

4-1. Setting of ZERO adjustment

Zero point can be changed by ZERO coarse control switch and ZERO fine control trimmer.

4-2. Setting of GAIN adjustment

Sensitivity can be changed by GAIN coarse control switch and GAIN fine control trimmer.

The variable range above mentioned is input conversion to get the output of DC10V.
(When the bridge power supply voltage is set as DC10V.)

4-3. Settng of CALIB value

The voltage or the current corresponding to the CALIB set value (input conversion value) is
output.

4-4. Setting of frequency response

Frequency response can be selectable.

The changeover of 1 Hz and 30 Hz at FILTER ON is selected by DIP switch on circuit board.
When both 1 and 2 of DIP1 on the printed cirsuit board turns OFF, 1 Hz is selected.
(The standard is 30 Hz. The setting is that both 1 and 2 of DIP1 turns ON.)

4-5. Setting of bridge power supply voltage

The bridge power supply voltage is selectable.
Please select the voltage value less than the maximum rated voltage of a strain gage applied

transducers.

14

● When the procedure of installing the fuse, and the capacity of installed fuse is improper, it will cause an unexpected failure.

Position of fuse

Parts mountin g side of the PCB

5. How to change the Fuse

Caution

① Turn off the power supply to the terminal of this instrument.
② Detach the screw (M2.6 x 5) of 4 points at the right side of the front panel, and remove the cover.
③ Replace the fuse (1 A) attached at the parts mounting side of PCB showing as follows.
④ Put the cover, and install the screw to 4 points.

15

● Dont press the A/Z ON switch in the condition of pressing the A/Z OFF switch. It enters the adjustment mode for our maintenance, and it

becomes a fixed output of DC0 V compulsorily, and AUTO ZERO LED blinks.
Please push the A/Z ON switch with the A/Z OFF switch pushed again, and make clear the adjustment mode when it enters the adjustment
mode by mistake.

● The operation of A/Z ON and A/Z OFF by the external control input is started when the input signal is shorten for about 100 ms or more.

● Don’t execute the A/Z OFF during the 1 second executing the A/Z ON by the external control input and the switch at the front panel.

● When the optional auto zero is attached, the temperature effect of auto zero is added on the standard temperature effect.

● When the condition changes by the external control input, please confirm the timing of the changeover, and adjust the timing by processing

the timer if necessary.

6. Option

6-1. Auto zero (CSA522B-P99)

(1) Input range of auto zero ：within ±2.4 mV/V
(2) Range of auto zero ：within ±10 V
(3) Required time of auto zero ：within approx.1 s
(4) Accuracy of auto zero ：within ±5 mV
(5) Back-up time ：Approx. 10 years (under the usage of Lithem battery)
(6) Temperature effect Zero point ：within ±0.005 ％F.S./℃

Sensitivity ：within ±0.005 ％F.S./℃

6-1-1. Equivalent circuit of external input

6-1-2. Explanation of the function

(1) A/Z ON

When the “A/Z ON” switch at the front panel is pressed, or shorten the terminal between A/Z
ON and COM for about 100 ms or more, auto zero (tare weight cancellation) is executed, and
teh voltage output value and the current output value becomes zero. The voltage output value
or the current output value becomes the output for net weight.

(2) A/Z OFF

When pressing the “A/Z OFF” switch, or shorten the terminal between A/Z OFF and COM for
about 100 ms or more, the function of auto zero clear (tare weight cancellation clear) will work.
The voltage output value or the current output value becomes the output of gross weight.

Caution

16

6-2. Power supply voltage AC110 V (CSA522B-P61)

Power supply voltage AC110 V (Permissible variable range AC99 V to AC127 V)
Power supply frequency 50/60 Hz
Power consumption Approx.15 VA

6-3. Power supply voltage AC200 V (CSA522B-P63)

Power supply voltage AC200 V (Permissible variable range AC180 V to AC220 V)
Power supply frequency 50/60 Hz
Power consumption Approx.15 VA

6-4. Power supply voltage AC220 V (CSA522B-P64)

Power supply voltage AC220 V (Permissible variable range AC198 V to AC253 V)
Power supply frequency 50/60 Hz
Power consumption Approx.15 VA

17

Execute the trouble shooting

Start measurement

NG

OK

Normal operation

Supply power again

Operation

Abnormal operation

7. Trouble shooting

Please check the instrument according to the following procedures when abnormality is found in
operation.

Moreover, please contact with MINEBEA when there is no corresponding item, and the symptom does
not disappear even if the solution is done.

18

YES

NO

Inform Minebea about the contents of

failure and situation at site in details.

Supply power source suitable for the

spedification

Set the load resistance

to 500 Ω or more

NO

YES

YES

1

Set the load resistance

to 510 Ω or less

Load resistance is

510 Ω or less

1

NO

NO

YES

YES

Wiring method

is good

YES

YES

YES

NO

NO

NO

NO

According to the

paragraph 2-6. connect

the wiring correctly.

Set within the operation

range of auto zero.

Does supply

power voltage satisfy

the specification

Executing the trouble shooting

Voltage output is

wrong

Within the range of

auto zero

Current output

is wrong

Load resistance is

500 Ω or more

Auto zero does’t

work

19

Output the voltage

and current

Output of voltage or

current doesn’t change

NO

NO

YES

YES

2

3

Voltage and

current output stagger

abnormally.

4

YES

NO

Inform Minebea about the contents of

failure and situation at site in details.

１

20

POWER LED lights on

Connect securely according to
the paragraph 2

Fuse is cut off

Replace fuse
according to the
paragraph 5

NO

NO

NO

YES

YES

YES

Inform Minebea about the contents of

failure and situation at site in details.

Connecting method

is good

2

21

● In confirming the voltage between A and C, please set the connection range of the measuring instrument such as tester to DC･V.

● In confirming the voltage between B and D, please set the connection of the measuring instrument to DC･mV.

Remove the cable of strain gage applied

transducer from the terminal.

Voltage betwee A and C

is the same as specified.

① Connect the cable of strain gage applied transducer to the terminals again.
② Apply the load to the strain gage applied transducer while inspecting the

voltage between the terminal B and D.

Voltage between B

and D is varied.

Execute the calibration again according to
the paragraph 3.

Same condition

Start measurement

Consult with MINEBEA

3

YES

NO

NO

Strain gage applied transducer
connected might be broken, or the
signal route (signal line) might
been disconnected.

YES

NO

YES

Inform Minebea about the contents of

failure and situation at site in details.

22

● In confirming the voltage between A and C, please set the connection range of the measuring instrument such as tester to DC･V.

● In confirming the voltage between B and D, please set the connection of the measuring instrument to DC･mV.

Remove the cable of strain gage applied

transducer from the terminal

Shorten between B & D, and A & G

Voltage/Current output

are stable

Same condition

Start measurement

4

YES

NO

NO

YES

NO

Inform Minebea about the contents of

failure and situation at site in details.

Confirm various connection according to the paragraph 2.
Especially, please confirm whether there is influence from the
noise source such as inverters.

Inform Minebea about the contents of

failure and situation at site in details.

YES

Voltage between A & C

is the same as specified, and

stable.

23

Bridge power supply

DC10 V±0.3 V within 120 mA (Changeable to DC2.5 V and DC5 V)

Applicable transducer

Strain gage applied transducer from 60 Ω to 2 kΩ

Input range

0.35 mV/V to 3.5 mV/V

Output

±10 V, ±20 mA(Non-isolation)

Load resistance on output

500 Ω or more

Adjustable range on sensitivity

L：1 000 times, M：2 000 times, H：3 000 times
Adjusted 1/1 to 1/4 against each setting

Adjustable range on zero point

±0.6 mV/V

Non-linearity

0.005 %F.S.

Temperature
coefficient (voltage)

Zero point

±0.2 μV/℃(Input conversion)

Sensitivity

±0.005 %F.S./℃

CALIB

0.25 mV/V±0.000 25 mV/V and 1 mV/V±0.001 mV/V

Frequency responce

1 Hz or 30 Hz (-12 dB/oct) Bessel type
(Selectable by dip-switch on P.C. board) and 25 kHz (-3 dB)

Current output

DC4 mA to 20 mA (Non-isolation, at the output of DC0 V to 10 V)

Load resistance on current output

510 Ω or less

Non-linearity on current output

0.05 %F.S. or less

Temperature
coefficient
(Current)

Zero point

±0.01 %F.S./℃

Sensitivity

±0.01 %F.S./℃

Operating
temperature
/humidity range

temperature

－10 ℃ to 50 ℃

humidity

85 %RH or less (Non condensing)

Power supply

Power supply
voltage

AC100 V (Permisible variable range AC90 V to AC110 V)

Power supply
frequency

50/60 Hz

Power
consumption

Approx.15 VA

Insuration resistance

DC500 V 100 MΩ or more between the power supply line and case

Withstand voltage

AC1 500 V in 1 min. between the power supply line and case

Outline dimensions(W×H×D)

49.5 mm ×138 mm ×173.6 mm (Excludes protruding parts.)

Weight

Approx.1.2 kg

Instruction manual

1 piece

Time lag fuse

1 piece(1 A)

Minus driver

1 piece

8. Specifications

8-1. Specifications

8-2. General specification

8-3. Accessories

24

P/N

CSA522B-P99

Input range of auto zero

within ±2.4 mV/V

auto zero range

within ±10 V

Required time for auto zero

within approx.1 s

Accuracy of auto zero

within ±5 mV

Back-up time

Approx. 10 years (with the usage of Lithium battery)

Temperature
coefficient

Zero point

±0.005 %F.S./℃

Sensitivity

±0.005 %F.S./℃

P/N

CSA522B-P61

Power supply voltage

AC110 V (Permissible variable range AC99 V to AC127 V)

Power supply frequency

50/60 Hz

Power consumption

Approx. 15 VA

P/N

CSA522B-P63

Power supply voltage

AC200 V (Permissible variable range AC180 V to AC220 V)

Power supply frequency

50/60 Hz

Power consumption

Approx. 15 VA

P/N

CSA522B-P64

Power supply voltage

AC220 V (Permissible variable range AC198 V to AC253 V)

Power supply frequency

50/60 Hz

Power consumption

Approx. 15 VA

Bridge power supply

DC10 V

Sensitivity adjustment

1 000 times (DC10 V output at 1.0 mV/V input)

Range of frequency responce

30 Hz (-12 dB/oct) Bessel type, and 25 kHz (-3 dB)

8-4. Options

8-4-1. Auto zero

8-4-2. Power supply voltage

8-5. Standard specification at the shipmennt

25

9. Warranty

9-1. Warranty

● The instrument is covered by a warranty for a period of one year from the date of delivery.

● As for repairs and/or after service is required during the period of warranty, contact with

Minebea's sales office or sales agent from which you have purchased.

9-2. Repair

Before asking repairs, make checks once again that the connection, setting and adjustment for
the instrument have finished properly by referring to 9. Trouble shooting.

Especially, make checks whether the connections of sensors are disconnected or cut off.
After that, still there may be found some defects in the instrument, contact with Minebea's

sales office or sales agency from which you have purchased.

●The contents of this manual may subject to change without notice.

HEAD QUARTER: MINEBEA CO., LTD.

4106-73 Miyota, Miyota-machi, Kitasaku gun, Nagano-ken 389-0293 Japan
Tel: [phone] Fax: [phone]

Sensing Device Product Sales Management:

1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan
Tel: [phone] Fax: [phone]

Sensing Device Business Unit

FUJISAWA PLANT 1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan
Tel: [phone] Fax: [phone]

KARUIZAWA PLANT 4106-73 Miyota, Miyota-machi, Kitasaku gun, Nagano-ken 389-0293 Japan
Tel: [phone] Fax: [phone]

HOMEP AGE ADDRESS http://www .minebea-mcd.com