Unipulse F340A Operation Manual
F340A
DIGITAL INDICATOR
OPERATION MANUAL
14 Feb. 2012
Rev. 1.38
Introduction
We appreciate your kind purchase of F340A Digital Indicator.
To take full advantage of high performance of F340A, Thoroughly read this operating
manual first before use and understand the explanations contained herein for correct
operating procedures.
Introduction
Safety Precautions
Be sure to read for safety.
In order to have an F340A Digital Indicator used safely, notes I would like you to surely
follow divide into and , and are indicated by the following
documents.Notes indicated here are the serious contents related safely.Please use after
understanding the contents well.
WARNING
CAUTION
WARNING
Misuse may cause the risk of death or serious
injury to persons.
CAUTION
Misuse may cause the risk of injury to persons
or damage to property.
Safety Precautions
WARNING
● Use F340A with correct supply voltage.
● Do not carry out the direct file of the commercial power supply to a signal input terminal.
● Carefully check wiring, etc. before applying power.
● Set the correct Excitation Voltage for the sensor. （10V is set when F340A is
dispatched from us.）
● Do not disassemble the main body for modifications or repair.
● Be sure to ground the protective ground terminal.
● When smoke, a nasty smell, or strange sound, please shut off a power supply
immediately and extract a power supply cable.
● Do not install in the following environments.
- Placeｓ containing corrosive gas or flammable gas.
- Where the product may be splashed with water, oil or chemicals.
Safety Precautions
Safety Precautions
CAUTION
● Be sure to disconnect the power cable when performing the following.
- Attachment/detachment of connectors of options.
- Wiring/connection of cables to terminal blocks.
- Connection of the ground line.
● Take an interval of more than 5 seconds when repeating ON/OFF.
● For connection to the signal I/O terminal block, wire correctly after checking the signal
names and terminal block numbers.
Also, turn off the power of the main body before connection/wiring to the signal I/O
terminal block.
● Use shielded cables for the connection of strain gauge type sensor, displacement
sensor, External input and output or options.
● Take adequate shielding measures when using at the following locations.
- Near a power line.
- Where a strong electric field or magnetic field is formed.
- Where static electricity, relay noise or the like is generated.
● Do not install in the following environments.
- Where the temperature and/or humidity exceeds the range in the specifications.
- Places with large quantities of salt or iron powder.
- Where the main body is directly affected by vibration or shock.
● Do not use it, broken down.
● When you send F340A by repair etc., please take sufficient measures against a shock.
CONTENTS
CONTENTS
1． FUNCTIONAL DESCRIPTIONS ................................................................... 1
1-1． Front Panel .......................................................................................... 1
1-1-1． Status Display ............................................................................ 1
1-1-2． Numerical Display ...................................................................... 2
1-1-3． Setting Key Pad ......................................................................... 2
1-2． Rear Panel ........................................................................................... 4
1-2-1． GUARD GROUND ..................................................................... 4
1-2-2． Frame Ground (Functional ground) ........................................... 4
1-2-3． Options Slot ............................................................................... 4
1-2-4． AC Power Input Terminal Board ................................................ 4
1-2-5． Signal Input/Output Terminal Board........................................... 5
2． CONNECTION .............................................................................................. 7
2-1． Connecting to Cage Clamp Terminal Block ......................................... 7
2-2． Connecting Strain Gauge Sensor ........................................................ 8
2-3． Connecting Power Input Terminal........................................................ 9
2-4． Connecting SI/F ................................................................................. 10
2-5． Connecting High / Low Limit Relays .................................................. 11
2-6． Connecting Hold and Digital Zero Signals ......................................... 12
2-7． Connecting Analog Monitor Output (VOL OUT)................................. 13
3． SETTING MODE CONFIGURATION.......................................................... 14
3-1． Selection of Setting Items .................................................................. 14
3-2． Display of Setting Items ..................................................................... 16
3-3． List of Values ..................................................................................... 17
3-4． Setting Procedure .............................................................................. 19
4． CALIBRATION ............................................................................................ 20
4-1． Equivalent Input Calibration Procedure ............................................. 21
4-2． Actual Load Calibration...................................................................... 26
5． SETTING OF FUNCTIONS......................................................................... 31
5-1． High /Low Limit Value ........................................................................ 31
CONTENTS
5-2． High / Low Limit Comparator Mode ................................................... 33
5-3． Hysteresis .......................................................................................... 34
5-4． Digital Offset ...................................................................................... 37
5-5． Near Zero........................................................................................... 38
5-6． Digital Filter ........................................................................................ 39
5-7． Analog Filter....................................................................................... 40
5-8． Motion Detect..................................................................................... 41
5-9． Zero Tracking..................................................................................... 43
5-10． Hold Mode........................................................................................ 45
5-11． Automatic Printing............................................................................ 46
5-12． Hold Value Printing .......................................................................... 48
5-13． LOCK ............................................................................................... 49
5-14． Scale Division .................................................................................. 50
5-15． Display Frequency ........................................................................... 51
5-16． Excitation Voltage ............................................................................ 52
6． HOLD FUNCTION...................................................................................... 53
6-1． Peak Hold .......................................................................................... 53
6-2． Sample Hold Operation (Digital Hold)................................................ 56
7． DIGITAL ZERO FUNCTION........................................................................ 58
8． BCD DATA OUTPUT .................................................................................. 59
8-1． Connector Pin Assignment ................................................................ 59
8-2． Logic Switching .................................................................................. 60
8-3． Equivalent Circuit ............................................................................... 60
8-4． Signal Timing ..................................................................................... 61
8-5． BCD Data Update Rate Selection...................................................... 62
9． RS-232C INTERFACE ................................................................................ 64
Communication Specifications........................................................... 64
9-1．
9-1-1． Standard .................................................................................. 64
9-1-2． Connector Pin Assignment ...................................................... 65
9-1-3． About Cables ........................................................................... 65
9-2． Setting RS-232C Interface ................................................................ 66
CONTENTS
9-3． Communication Mode ........................................................................ 67
9-4． Communication Format...................................................................... 67
10． D/A CONVERTER..................................................................................... 72
10-1． Voltage Output
(Depending on the request at the time of order.) ............................... 72
10-1-1． Obtaining Voltage Output Signal............................................ 73
10-1-2． Setting of D/A Zero and Gain................................................. 73
10-1-3． About D/A Resolution............................................................. 74
10-2． Current Output
(Depending on the request at the time of order.) ............................... 75
10-2-1． Obtaining Current Output Signal............................................ 76
10-2-2． Setting of D/A Zero and Gain................................................. 76
10-2-3． About D/A Resolution............................................................. 77
10-3． Setting D/A Zero Full Scale.............................................................. 78
10-4． About D/A Output Error.................................................................... 79
11． DC POWER SOURCE .............................................................................. 80
12． OVERSCALE/ERROR DISPLAYS............................................................ 81
12-1． Overscale Display ............................................................................ 81
12-2． Calibration Error Display .................................................................. 81
13． SELF-CHECK FUNCTION AND INITIALIZATION.................................... 82
13-1． Self-Check ....................................................................................... 82
13-2． Initialization ...................................................................................... 84
13-3． F340A Block Diagram ...................................................................... 86
14． DIMENSIONS ........................................................................................... 87
15． SPECIFICATIONS .................................................................................... 88
15-1． Analog Section................................................................................. 88
15-2． Indicator Section ............................................................................. 89
15-3． Setting Section................................................................................. 89
15-4． External Signals ............................................................................... 89
15-5． Interface ........................................................................................... 89
15-6． Option .............................................................................................. 90
CONTENTS
15-7． General Specifications ..................................................................... 90
15-8． Accessories...................................................................................... 91
16． CONFORMITY TO EC DIRECTIVES ....................................................... 92
1. FUNCTIONAL DESCRIPTIONS
H I OK LOW PEAK HOLD
F340A
DIGITAL
INDICATOR
HOLD
ZERO
ESC
DOWN
SEL
ENT
UP
FNC
SHIFT
CAL
GAIN
STATUS
NUMERICAL
SETTING
DISPLAY
DISPLAY
KEY PAD
1-1. Front Panel
1.FUNCTIONAL DESCRIPTIONS
1-1-1. Status Display
The F340A status is indicated. Setting items are indicated when setting.
HI： This LED turns on when the indicated value is larger than the set value of the
OK： This LED turns on when the indicated value is smaller than the set value of
（low limit ≦ indicated value ≦ high limit）
LOW： This LED turns on when the indicated value is smaller than the set value of
PEAK： This LED is blinking when the Peak Hold function is activated.
high limit（indicated value ＞ high limit）
Operation of the high limit relay is on.
the high limit and larger than the set value of the low limit
the low limit（indicated value ＜ low limit）
Operation of the low limit relay is on.
HOLD： This LED turns on when the indicated value is the held value.
1
1.FUNCTIONAL DESCRIPTIONS
UP
DOWN
FNC
SEL
SHIFT
CAL
FNC
Indicated value display Setting mode“F1”
display
1-1-2. Numerical Display
The three types of display are provided.
1）Indicated value
2）Set value
3）Overflow display
• Minus overflow of the A/D converter （－ LOAD）
• Plus overflow of the A/D converter （LOAD）
• Indicated value overflowed （indicated value ＜－ 19999）（OFL1）
• Indicated value overflowed （indicated value ＞ 19999）（OFL2）
1-1-3. Setting Key Pad
These are keys for commanding settings and operations.
Increments by one the numeric in the blinking digit of the setting
item selection or set value.
Decrements by one the numeric in the blinking digit of the setting
item selection or set value.
Enters the setting mode. Setting mode“F1” is indicated.
This key sets a decimal point in the span calibration.
Enters the actual load calibration mode.
2
Select the setting mode number and the blinking digit of the setting
value in setting.
Enters the equivalent input calibration mode.
Inputs the minus sign in setting.
1.FUNCTIONAL DESCRIPTIONS
ENT
HOLD
ZERO
ESC
HOLD
ESC
setting in progress Indicated Value display
Validates setting items and set values.
Starts the Hold function. To cancel the Hold function,
press key again.
Forcibly resets the indicated value to zero （digital zero function）.
When the calibration LOCK is turned off, the digital zero function is
not activated using this key.External DZ input is also disabled.
Cancels setting and returns to the indicated value display.
3
1.FUNCTIONAL DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
L
N
AC IN
F. G.
SER. No.
MADE IN JAPAN
FRAME GROUND
SIGNAL
AC INPUT
OPTION SLOT
TERMINAL BOARD
TERMINAL BOARD
INPUT/OUTPUT
GUARD GROUND
1-2. Rear Panel
1-2-1. GUARD GROUND
This is a guard ground terminal block. Be sure to ground the guard ground terminal to
prevent electric shocks and failures due to static electricity.（The frame and the guard
ground terminal are conducted.）
1-2-2. Frame Ground (Functional ground)
This is a F.G terminal of AC input.（The frame and the F.G terminal are conducted.）
1-2-3. Options Slot
One option board can in stall in the option slot.
・BCD Parallel data output （BCO）
・RS-232C Interface （232）
4
・D/A Converter （DAC）
1-2-4. AC Power Input Terminal Board
Connect AC power code. The input voltage is 100V-240V AC.
The frequency is 50/60Hz.
1-2-5. Signal Input/Output Terminal Board
㧿㧱㧾㧚㧺
10
11
12
13
14
15
SER.N
1
11
12
13
14
15
2
3
4
5
6
7
8
9
10
SI/F
N/O
COM
High limit relay
Low limit relay
Hold input
COM
DZ input
Analog monitor output
Analog COM
＋ EXC
－ SIG
－ EXC
＋ SIG
SHIELD
N/O
COM
Strain gauge
Connect the shield
cable of the sensor.
sensor input
This terminal board is used for input/output of control signals, SI/F data output, and
input of strain gauge sensor signals.
・Terminal board Assignment
1.FUNCTIONAL DESCRIPTIONS
1・2 ： Two-wire serial interface （SI/F） for connecting printers and external display
from UNIPULSE.
This interface has no polarity and can connect up to three external devices.
Use parallel two-core cables or captire cables.
3 ～ 6： Output terminals of the high/low limit relays.
3・・・High limit relay （N/O）
4・・・High limit COM
5
1.FUNCTIONAL DESCRIPTIONS
5・・・Low limit relay （N/O）
6・・・Low limit COM
７・８： Terminals for inputting hold signals
7・・・Hold input
8・・・ COM
８・９： Terminals for inputting digital zero signals. Available in LOCK ON only.
9・・・DZ input
8・・・ COM
10・11： Terminal for output of a voltage proportional to the sensor input.
Output voltage is approx. 2V per 1mV/V(sensor input).
10・・・Voltage output （0 to Approx. ± 6V）
11・・・ COM
12 ～ 15：Terminal for connecting a strain gauge sensor
12・・・＋ EXC
13・・・ － SIG
14・・・－ EXC
15・・・ ＋ SIG
6
2. CONNECTION
0.2in
・Cable can be from 24 to 14AWG (0.2 to 2.5mm2)
・ It is not necessary to solder the cable wires or to fix a solderless terminal.
・If several cables to be inserted to the same hole,twist those cable wires
together and insert.
Request
2-1. Connecting to Cage Clamp Terminal Block
1.Strip the casing 0.2in (6mm) on the cable to be connected.
2.Twist the bare wire to fit the terminal hole.
3.Insert the supplied screwdriver into the upper hole and lift upward.
2.CONNECTION
4.Insert the twisted wires into the lower hole.
5.Make sure cable is clamped securely and does not come out with a slight tug.
7
2.CONNECTION
（＋ EXC）
（－ EXC）
（＋ SIG）
（－ SIG）
（SHIELD）
＋ IN
－ OUT
－ IN
＋ OUT
12
13
14
15
F340A
（＋ EXC）
（－ EXC）
（＋ SIG）
（－ SIG）
（SHIELD）
＋ IN
－ OUT
－ IN
＋ OUT
12
13
14
15
F340A
2-2. Connecting Strain Gauge Sensor
・4-wire sensor
・6-wire sensor
8
2-3. Connecting Power Input Terminal
Before connecting cables to the terminal block, put on
climp-style terminals (M3) to the cables as shown in the
figure so that the cables tips might not straggle.
Black
White
Green
L
N
AC IN
F. G.
6mm or less
Red
Black
＋
－
DC IN
F. G.
6mm or less
CAUTION
Be aware that the voltage drops depending on the wire thickness and length.
Also, never input an AC power source. Doing so will cause a failure.
AC spec.
Connect AC power code. The input voltage is 100V-240V AC.
2.CONNECTION
The frequency is 50/60Hz.
DC spec. (Depending on the request at the time of order)
Connect the positive (+) side of the power source to the red screw side of the terminal
block on the back of the F340A, and its negative (-) side to the black screw side.The
input voltage is 12V-24V DC.
9
2.CONNECTION
Converter
Display
Printer
SI/F
２
１
← Inside Outside →
F340A
2-4. Connecting SI/F
Two-wire serial interface （SI/F） for connecting printers and external display from
UNIPULSE.
This interface has no polarity and can connect up to three external devices.
Use parallel two-core cables or captire cables.
10
2-5. Connecting High / Low Limit Relays
N/O
COM
３
４
Load
Var istor
Spark Killer
AC
３
４
Spark Killer
DC
← Inside Outside →
← Inside Outside →
COM
N/O
Load
F340A
F340A
AC Power Supply
DC Power Supply
N/O
COM
５
６
← Inside Outside →
F340A
[ Low limit relay ]
Connect a spark killer as
near the load as possible.
Connect a diode as
near the load as possible.
Power Supply
Power Supply
N/O
COM
５
６
← Inside Outside →
F340A
[ Low limit relay ]
Rating is 250V AC and 0.5A.
Rating is 30V DC and 0.5A.
CAUTION
Overvoltage and overcurrent may cause breakdown of the relay as well
as shortening its life.
It is recommended to connect a spark killer etc. to the connected load
according to AC/DC (refer to the connection examples). With a noise
killer, you can make the life of the relay longer as well as making it
resistible against noise.
Never short-circuit the load.
Should you do it, the equipment will break down.
・Connecting External Load
[ High limit relay ]
2.CONNECTION
11
2.CONNECTION
Vcc
←
Inside
Ic=Approx.8mA
COM
Push
switch
Toggle relay
switch
Relay
Contact
Transistor
+12V
IN
IN
TTL open
7
8
Outside →
F340A
collect output
[ Hold input ]
Ic=Approx.8mA
COM
Push
switch
9
8
[ DZ input ]
Connect 9 and 8.
(ON when IN is ’H)
CAUTION
・Avoid applying external voltages to the signal
・Use external elements which withstands Ic=10mA
・Leakage current from external element must be 30μA or below
2-6. Connecting Hold and Digital Zero Signals
・Equivalent circuit （input）
12
2-7. Connecting Analog Monitor Output (VOL OUT)
10
＋
－
External device
Load resistance
2kΩor above
SIG
GND
← Inside Outside →
11
F340A
Terminal for out put of a voltage proportional to the sensor input .
Output voltage is approx. 2V per 1mV/V(sensor input).
2.CONNECTION
13
3.SETTING MODE CONFIGURATION
FNC
Setting Mode 1
High Limit
Low Limit
Hysteresis
Digital
Near Zero
Digital Filter
Analog Filter
Motion Detect
Motion Detect
Zero Tracking
Zero Tracking
Hold Mode
Automatic Printing
Hold Value Printing
Offset
Setting Mode 2
UP
DOWN
DOWN
UP
DOWN
UP
UP
DOWN
SEL SEL
High/LowLlimit
（band）
（time）
（time）
（band）
Comparison Mode
(P.31)
(P.31)
(P.33)
(P.34)
(P.37)
(P.38)
(P.39)
(P.40)
(P.41)
(P.41)
(P.43)
(P.43)
(P.45)
(P.46)
(P.48)
3. SETTING MODE CONFIGURATION
3-1. Selection of Setting Items
14
LOCK
Scale
Display
BCD Data
Update Rate
RS-232C
D/A Full Scale
Setting Mode3 Setting Mode4
UP
DOWN
Excitation
UP
DOWN
DOWN
UP
DOWN
UP
SEL
D/A Zero Setting
Setting
Frequency
Division
Vo l t a g e
(P.49)
(P.50)
(P.51)
(P.52)
(P.66)
(P.78)
(P.78)
(P.62)
3.SETTING MODE CONFIGURATION
15
3.SETTING MODE CONFIGURATION
Blnking OFF
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
3-2. Display of Setting Items
・Mode1
(1) High Limit
(2) Low Limit
(3) High/Low Limit Comparison
Mode
(4) Hysteresis
(5) Digital Offset
(6) Near Zero
・Mode2
(1) Digital Filter
(2) Analog Filter
(3) Motion Detect（time）
(4) Motion Detect（band）
(5) Zero Tracking （time）
(6) Zero Tracking（band）
(7) Hold Mode
16
(8) Automatic Printing
(9) Hold value Printing
・Mode3
HI
OK LOW HOLDPEAK
HI
OK LOW HOLD
PEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
HI
OK LOW HOLDPEAK
・Mode4
3.SETTING MODE CONFIGURATION
(1) LOCK
(2) Scale Division
(3) Display Frequency
(4) Excitation Voltage
(1) BCD Data Update Rate
(2) RS-232C
(3) D/A Zero Setting
(4) D/A Full Scale Setting
3-3. List of Values
Setting Mode1
1 High Limit 075.00
2 Low Limit 025.00
3
4 Hysteresis 00.00
5 Digital Offset 000.00
Item Default Set Value
High/Low Limit Comparison Mode
Calibration
LOCK
LOCK
○
○
0
○
○
○
6 Near Zero 001.00
○
17
3.SETTING MODE CONFIGURATION
Setting Mode2
Item Default Set Value
1 Digital Filter 0
2 Analog Filter 2
3
Motion Detect（time）
4
Motion Detect（band）
5
Zero Tracking（time）
6
Zero Tracking（band）
7 Hold Mode 0
8 Automatic Printing 1
9 Hold Value Printing 0
Setting Mode3
Item Default Set Value
1.5
05
0.0
00
LOCK
○
○
○
○
○
○
○
○
○
LOCK
Calibration
LOCK
Calibration
LOCK
1 LOCK 0000
2 Scale Division 0.01
3 Display Frequency 3
4 Excitation Voltage 1
Setting Mode4
Item Default Set Value
1 BCD Data Update Rate 0
2 RS-232C 13010
3 D/A Zero Setting 000.00
4 D/A Full Scale Setting 100.00
※ default：factory-set value
LOCK
○
○
○
○
○
○
○
Calibration
LOCK
18
3-4. Setting Procedure
UP
DOWN
FNC
ENT
ESC
SEL
SEL
SEL SEL SEL
UP
DOWN
UP
DOWN
UP DOWN
UP
DOWN
ENT
“F2” of setting Mode2 “F3” of setting Mode3 “F4” of setting Mode4
Select a
setting item..
The most significant digit starts blinking
Select a digit where setting is desired.
Set a value.
If wishing to affix a sign to the high/low limit
and d
igital offset, D/A zero setting full scale
setting, press key.
SHIFT
CAL
Set Value is validated.
Setting Mode is terminated to return to
“F1” of setting Mode1
is displayed.
is displayed.is displayed.is displayed.
Select a
setting item..
Select a
setting item..
Select a
setting item..
to prompt setting.
the indicated value display.
If one minute has elapsed after key is pressed without any key hit
before key is pressed,the setting is canceled and the indicated value is displayed
again. The set value is not stored in this case.
FNC
ENT
3.SETTING MODE CONFIGURATION
19
4.CALIBRATION
F340A
Strain gauge sensor
Rated output value （mV/V）
＋
Indicated value
A data sheet will be attached to a strain gauge sensor you buy.
On the data seat, the following values are listed.
Capacity ................................... Load (unit: kg, t, etc.)
Rated Output............................ Voltage (unit: mV/V)
Non-Linearity， Hysterisis，
Input Resistance，Output Resistance，
Zero Balance, etc.
The Capacity and the Rated Output are necessary values for the
equivalent input calibration. Input these two values to F340A.
4. CALIBRATION
"Calibration" refers to an operation whereby matching between the F340A and a strain
gauge sensor is obtained. The F340A uses the two calibration methods as described
below.
◇ Equivalent Input Calibration
This approach uses no actual loads but key entry of the rated output value of the strain
gauge sensor (mV/V) and the rating value (value to be displayed).
This method is simple and employed when actual loads cannot be applied.
For example
Gain will be automatically decided by registering the values indicated as follows:
for load: 2.001mV/V - 100.0kgf
for pressure: 2.002mV/V - 10.00kgf/cm
2
, and
for torque: 2.502mV/V - 15.00kgf•m.
20
◇ Actual Load Calibration
F340A
Strain gauge sensor
Indicated value
Actual
load
Releasing Calibration LOCK
Setting Scale Division
Equivalent Input Calibration
Inhibit Calibration
Calibration Lock
This approach provides calibration by applying an actual load to the strain gauge sensor
and inputting the actual load value. This calibration is without little errors and more
correct.
4.CALIBRATION
4-1. Equivalent Input Calibration Procedure
The equivalent input calibration uses the following procedure :
Release the Calibration LOCK that inhibits calibration.
Set the minimum value of the digital change desired
（omissible if no desired value is present）
Set the rated output vale and zero point of the strain
gauge sensor.
Set the calibration of ON to prevent misoperation.
21
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