AD2LC
P. 3 / 5
EM-1388 Rev.2
■
SENSOR ADJUSTMENTS USING AN ACTUAL LOAD
1. Program Mode
Set ITEM 01 – DATA 2 to turn the unit into Program
Mode.
2. Excitation Voltage
Choose ITEM 04. Press DATA UP or DOWN key until the
DATA display shows the desired excitation voltage. When
the value calculated by [Excitation / Resistance] exceeds
30mA, set a voltage value to fit with 30mA limit.
[E.G. 1]
Max. excitation voltage
10V
Strain gauge resistance
120
Ω
If you choose 10V as the excitation:
10V / 120
Ω
= 83.3mA ––
> out of allowable range
Then you will choose 3.6V or less as calculated by the
equation below:
30mA
×
120
Ω
= 3.6V
3. 0% Input Voltage
Choose ITEM 06. With no load applied to the sensor, press
DATA DOWN key until the display value is stabilized
(while the computation circuit of the unit conducts averag-
ing process).
DATA display shows the approximate offset voltage.
Display Value = Sensor Voltage
×
Internal Coefficient*
4. 100% Input Voltage
Choose ITEM 07. With an actual known load, press DATA
DOWN key until the display value is stabilized (while the
computation circuit of the unit conducts averaging proc-
ess).
DATA display shows the sensor's sensitivity span.
5. Monitor Mode
Set ITEM 01 – DATA 1 to turn the unit into Monitor Mode.
6. PV Indication
Press ITEM UP or DOWN key until ITEM display indi-
cates "P".
If necessary, go to Display Range Scaling, Moving Average,
and other adjustments.
Set the unit to Monitor Mode with ITEM P displayed other
than for programming.
*If 100% load is not available, use the load ratio setting.
With 10% load, set ITEM 08 – DATA 10.0 before adjustments.
■
SENSOR ADJUSTMENTS BY ENTERING VALUES
1. Turn the unit into Program Mode.
2. Excitation Voltage
Choose ITEM 04. Press DATA UP or DOWN key until the
DATA display shows the desired excitation voltage. When
the value calculated by [Excitation / Resistance] exceeds
30mA, set a voltage value to fit with 30mA limit.
[E.G. 1]
Max. excitation voltage
10V
Strain gauge resistance
120
Ω
If you choose 10V as the excitation:
10V / 120
Ω
= 83.3mA ––
> out of allowable range
Then you will choose 3.6V or less as calculated by the
equation below:
30mA
×
120
Ω
= 3.6V
3. 0% Input Voltage
Choose ITEM 06. With no load applied to the sensor, press
DATA DOWN key until the display value is stabilized
(while the computation circuit of the unit conducts averag-
ing process).
DATA display shows the approximate offset voltage.
Display Value = Sensor Voltage
×
Internal Coefficient
4. Sensor's Sensitivity
Choose ITEM 05. Press DATA UP or DOWN key until the
display shows desired value as specified in the sensor's
specification sheet.
5. Turn the unit into Monitor Mode.
MDF.
CODE
ITEM
DATA
CONTENTS
DEFAULT
17
2
-9999 – 9999
BCD
Display range scaling 0% *
1
-1000
18
2
-9999 – 9999
Display range scaling 100% *
1
1000
17
2
-7FFF – 7FFF
Binary
Display range scaling 0% *
1
-7FFF
18
2
-7FFF – 7FFF
Display range scaling 100% *
1
7FFF
17
2
0000 – FFFF
Two's complement Display range scaling 0% *
1
0000
18
2
0000 – FFFF
Display range scaling 100% *
1
FFFF
17
2
8000 – 7FFF
Offset binary
Display range scaling 0% *
1
8000
18
2
8000 – 7FFF
Reflected binary Display range scaling 100% *
1
7FFF
19
2
0, 1, 2, 3, 4
Display code
0 : BCD with polarity (decimal)
0
1 : Binary with polarity
2 : Offset binary
3 : Two's complement
4 : Relfected binary
20
2
0, 1, 2, 3, 4
Available number of bits
0
0: 16 bits 1: 14 bits 2: 12 bits 3: 10 bits 4: 8 bits
21
2
0, 1
POL, OVF output logic
0 : Data available at High (CMOS) or ON (open collector)
0
1 : Data available at Low (CMOS) or ON (open collector)
22
2
0, 1
Data output logic *
2
0 : Positive (CMOS), Negative (open collector)
0
1 : Negative (CMOS), Positive (open collector)
23
2
0, 1
HOLD input logic
0 : HOLD at Low or shortcircuit
0
1 : HOLD at High or open circuit
24
2
0, 1
DAV output logic
0 : Data available at High (CMOS) or ON (open collector)
0
1 : Data available at Low (CMOS) or ON (open collector)
25
2
1 – 50
DAV output time (msec.)
1
26
N/A
–
ROM version
–
*1: Of the range set in ITEM 05/06/07. ITEM 17 < ITEM 18. *2: ITEM 21, 23 or 24 is independent from ITEM 22.
