15.SPECIFICATIONS
174
OP2: BCD parallel data input interface [BCI]
Parallel interface for receiving setting data from external devices. Terminals and
internal circuit are electrically isolated by photo-couplers.
Input data:
alarm upper/lower limit,
or rated belt speed (selectable)
Signal format:
5 digits BCD
Detection mode:
level or edge detection selectable
Input circuit:
Contact or open-collector (Ic <= 10mA)
OP4: RS-485 communication interface [485]
RS-485 is capable of longer distance communication than RS-232C,
and multiple of F805AT-BC can be connected in parallel identifying them
with unique IDs.
Signal level:
RS-485 compatible
Communication distance:
approx. 1km
OP8: Analog IN/OUT interface [ANA]
Analog IN/OUT interface with two analog input channels and three analog output
channels.
Analog input ×2
（
separately functionable
）
Input data:
belt speed
Current input:
DC4 – 20mA (input resistance 100
Ω
)
Voltage input:
DC 0 – 10V (input resistance 50k
Ω
)
* current and voltage input range are factory configured.
A/D conversion rate:
30 times/sec (for each channel)
Over range:
5% FS
(3.2 – 20.8 mA, or –0.5 – 10.5 V)
Resolution:
16bit
（
Calculative resolution is 1/10000 at 100%.
）
Accuracy:
±0.1% (operation temperature: 0 – 40
℃
)
Linearity error:
<= 0.05 % FS
Analog output ×3
（
separately functionable
）
Output data:
Select from: belt speed, weight density,
feed rate, load ratio, feed ratio, or control rate
Current output:
DC 4 – 20mA (load resistance <= 350
Ω
)
D/A conversion rate:
50 times/sec (each channel)
Resolution:
16 bit
Over range:
±10% FS (2.4 – 21.6mA)
Linearity error:
<= 0.05 % FS
Pulse input ×1
Max. input frequency:
10kHz (duty ratio 50%)
Count range (internal):
0 – 65536
Speed sensor (rotary encoder)
Output:
Single-phase (A-phase input used.)
Output circuit:
open-collector
(NPN type, Vceo >= 15V, Ic >= 30mA)
* It is not possible to use it at the same time with the pulse input
of the DAC.
* Use shielded twist-pair cable for connections.
Summary of Contents for F805AT-BC
Page 1: ...F805AT BC BELT SCALE CONTROLLER 15 Feb 2019 Rev 1 03 OPERATION MANUAL...
Page 15: ...CONTENTS XIV M E M O...
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