Jadever JIF-2002, Manual

Page: 66 / 67

JIF-2002 WEIGHING INDICATOR&CONTROLLER
66
L
This resistor must be large enough for proper power consumption.
Use the following formula: W = I ²
×
R where
W: Power I: Output Current R: Resistor
If a 500
Ω
resistor is used , power consumption will be :
W = (0.02)
²
×
500 = 0.2 when the Output Current is set to 0.2mA
The resistor should have a power greater than "0.5" (w = 0.5) and
have a very low temperature coefficient. In this example power
consumption is "0.2" and thus, the500
Ω
resistor is adequate.
Setting Output Current
I
OUT
= I
Z
+ ( weight / capacity ) * ( I
M
- I
Z
) (if 2<= I
OUT
<=22 mA)
I
OUT
: Output Current
I
Z
: Output at ZERO (F501)
I
M
: Output at Maximum Capacity (F502)
Example: A weighing system has a Maximum Capacity of 10,000kg. If you
Want the Output current to be 4mA at ZERO display, and 20mA at
1/2.
Maximum Capacity then:
I
M
= capacity / simulated)
×
(I
OUT
－
I
Z
)
＋
I
Z
I
M
= 10000 / 5000
×
(20 mA
－
4 mA)
＋
4 mA = 36 Ma
When Output at Full Scale is set at 36mA, and Output Current at Display
ZERO is set at 4mA, then at 1/2 Capacity (5000kg) the Output Current will be
20mA.NOTE: The Maximum Output will be saturated at 22mA.
OP-6 ANALOG OUTPUT 0
∼
10V
Output Level 0~+10 V effective range. Output range is
approximately -1.25~11.25 V
Resolution More than 1 / 1000
Temperature
Coefficient
±
(0.015 % /
℃
of rdg + 0.01mA) /
℃
Minimum
5 K
Ω
Minimum
If you add a 10 K
Ω
resistor , the output will be 0mA to 1mA (0~10 V)