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 Summary
Programmable
PID
General
Special Purpose
Indicator
Others
 

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     * BX8
    - P.I.D auto tuning
  - Multi inputs (various sensor inputs)

 
             
   
     
 

Model BX8
Function
﹞Fuzzy function ﹞Alarm Output Function(AL-1,2)
﹞Protection Structure(IP65 only the front) ﹞Auto operation function(ST, Low PV)
﹞Communication Function(RS485/422) ﹞Heating/cooling hysteresys
﹞Heater Break Alarm function(HBA) variation function
﹞Input multi function ﹞Transmit Output Function(PV, SV, MV)
﹞Group PID function ﹞Input filter : OFF, 1 ~ 120 sec.
﹞Zone PID function ﹞Heating/cooling control function
﹞External contact function(DI 1, DI 2) ﹞Output Limit Function
Input Type
﹞Thermocouple : K, J, E, T, R, S, B, L, N, U, WRe5 - 26, PL-II
﹞RTD : Pt 100 目, KPt 100 目
﹞d.c voltage input : 1~5 V d.c(For 4~20 mA d.c input, connect 250 目(0.1%) at the
exterior), -10~20 mV, 0~100 mV(programmable scale method)
Sampling Cycle 250 ms
Input Display Resolution Basically, below the decimal point of the input signal and measuring range
Input Impedance Thermocouple or mV input : above 1 M目, d.c V input : approx. 1 M目
Permissible resistance
of signal source
Thermocouple : below 250 目, Voltage : below 2 k目
Permissible
wiring resistance
RTD : below 150 目 / single wire(but, the resistance of the 3 wires should be the same
Permissible input
resistance
Within ▽10V(Thermocouple, RTD, Voltage : mV d.c), Within ▽20V(Voltage : V d.c)
Noise rejection ratio
NMRR(normal mode) : above 40 dB, CMRR(common mode) : above 120 dB (50/60 Hz ▽1%)
Applied standard Thermocouple / RTD(KS / IEC / DIN)
Compensation
error at standard contact
▽1.5 ﹉C(15 ~ 35 ﹉C), ▽2.0 ﹉C(0 ~ 50 ﹉C)
BURN-OUT detection
Thermocouple : OFF, UP / DOWN selection
RTD : OFF, UP selection (when Thermocouple or RTD BURN-OUT, the detection current : approx. 50 nA)
Measuring Accuracy ▽0.5%(FULL SCALE)
Input Range
Refer to "input signal and measuring range"
For thermocouple and RTD, the change is valid within the range of the input signal and measuring range table
For d.c voltage, the min/max voltage is possible within the each measuring range
and scaling is possible within the measuring condition
Power of operating sensors 20 V d.c(internal resistance 1.2 k目) Max. 50 mA, 15 V d.c (internal resistance 790 目)

Model Suffix code Description
BX8 Board type digital temperature controller
Control type 0 universal
1 Heating / Cooling
Selection 0 SV2, SV3
1 HBA
2 RS485
3 RS485 / HBA