Controllers
instrumentation Systems
CONTROLLERS
 
Features
Key lock function
 Controllers
Various Thermocouple and RTD inputs
RS-485 communication
1/4DIN, 1/8DIN, 72mm and 1/16DIN
PID and ON/OFF control modes
Two alarm outputs, with 10 alarm modes
Auto tuning function
Co and Fo selectable
 
Input Voltage
100 to 240VAC, 50/60Hz
Sensor Type
 Temperature Pressure Flow Other
Thermocouple : J, K, R, S, T, N, B, E, U, L, TXK
P latinum RTD : Pt100, JPt100
 Any Pressure Transducer Any Flow Transducer Level, PH, Conductivity Transducer
Control output
(selectable)
Relay SPDT-NO, 5A 250VAC
Voltage PNP, 14VDC + 10% -20% Max.40mA
Current 4 to 20mA, 600 max.
Control mode
 Method PID or ON/OFF or Manual
Control period 1 to 99 seconds, unit : 1 sec.
Sample rate 500ms
Alarm output
 SPST-NO, 3A 250VAC
Communication
(Optional)
Interface RS - 485
Protocol Modbus, ASCII
Baud rate 2400, 4800, 9600, 19200, 38400bps
 
 
 
 
Batch Weighing Controller
    Batch Weighing Controllers
A host of communications capabilities:
RS-232C, RS-422 / 485, BCD, analog output and standard 4-20mA Current Loop.
Automatic weight and / or count accumulation.
Monitor & control weighing batching with external or internal resolution.
Compact DIN size housing speeds installation & reduces space.
High sensitivity 0.3µV / d for more accurate measurements.
Hold and peak hold functions.
High display resolution to 16,000 counts.
Connect up to 10 AD-4401's with A & D's RS-422 / 485
Supplementary flow function assures accurate performance on each batch.
Fuzzy and Automatuc Free Fall Compensation (AFFC) for consistently accurate batching results.
Up to 1 million counts A/D resolution.
Digital Span Calibration enhances technical support and difficult installations.
User programmed timer settings and alarms.
Splash proof front panel and keys (IP-65).
Weigh-In and Loss-in-Weight batching.
Automatic batching and customer programming capability.
Enter control setpoints through front keys or remotely through external thumbwheels.
Bright, clear fluorescent displays.
Sub display provides feedback on all setpoints and simplifies calibration.
100 times / sec. High Speed Sampling.
 
Specifications
ANALOG INPUT AND A/D CONVERSATION
Input Sensitivity
Greater than 0.3µV / d
ZERO Adjustment Range
-0.0mV ~ + 20mV
Load Cell Excitation
10V DC ± 5% 230mA, Remote Sensing
(Up to 8 load cells at 350 / load cell)
Zero Temperature Coefficient
± (0.2µ + 0.0008% pf dead laod) / oC
Span Temperature Coefficient
8ppm / oC of reading
Non-Linearity
0.01% of full scale
Input Noise
± 0.3µVp-p
Input Impedance
10M (Min.)
A / D Conversion Method
Sigma Delta
A / D Resolution
1,000,000. counts (Max.)
A / D Conversion Rate
Approximately 100 times / second
 
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