Temperature Controller With RS485 Modbus-RTU Module Type Controllers


Digital temperature controller features

1. Can be connect the following sensors and signals to the universal input(K.E,J.T.S,R,B,N,PT100).

2. Can be easily set the optimum PID constants by performing AT (auto-tuning) with the limit cycle method,or ON-OFF Control Mode.

3. Can be output an alarm when the deviation, process value, set point, or manipulated value reaches a specified value.

4. With any model that supports communications, can be use communications , Modbus-RTU(standard)

5. With any model that provides a transfer process value as a 4 to 20 mA or 1 to 5 V transfer output.

Main parameter list

Setting valueSet the temperature set value (SV) which is the target value for control
Alarm 1 Please refer to ALP for the alarm mode suitable. Alarming when the program sections is breaking up.
PV BiasThe value set in the PV bias is added to the actual input value to correct the input value.
Proportional bandSet when PI or PID control is performance. For heating / cooling PID action. When P=0,the meter is ON/OFF control
Integral timeEliminates offset occurring in proportional control.
Derivative timePrevents overshoot and/or undershoot caused by integral action effect..
PID control cycle.Control response time
Digital FilterThis is a 1st-order lay filter by software prepared in order to reduce fluctuations of measured value (PV) by noise.
Differential gapWhen the control is ON/OFF control(P=0)
Relay contact may repeat its turning ON and OFF due to input fluctuation if measured value (PV) is near the alarm set value.the differential gap setting can prevent the relay contact from ON or OFF repetition.
Decimal point position selectionSet the position of the decimal point for the measured value to be displayed.
Output limiter highOutput limiter low to 200
Output limiter low0 to Output limiter high
Autotuning (AT) with learning function1: Autotuning (AT) with learning start
0: Autotuning (AT) with learning stop
Turns OFF automatically when the AT with learning function is completed.
Set data lockLOCK=0, Set value (SV) and parameter can be set.
LOCK=1,Only set value (SV) can be set.
LOCK>1, Set value (SV) and parameter cannot be set.
Input type1Cu50(–50.0~150.0℃); Pt100 (–199.9~600.0℃;  ) K( -30.0~1300℃); E( -30.0~700.0℃);  J (-30.0~900.0℃); T( -199.9~400.0℃);  S( -30~1600℃);
Input type20~5V/0~10mA; 1~5V/4~20mA;
Control output0:no output 
1:Relay output
2:Voltage output (for driving SSR)
3:Zero-cross output(for driving Triac)
4:PID linear current output(4-20mA /0-10v)
(A single functional)
AUX  output Opt.0:no output;              
1:RS232 or RS485;
2:contact the micro-printer; 
3:transmitter 0~10mA
Alarm type0: Alarm function OFF; 
1: Process high alarm; 
2:Process low alarm;
3:Process high and low alarm.(H1 and L2)
4: Deviation High alarm ; 
5:Deviation low alarm;
6:Deviation High and Low alarm..(H1 and L2)
7: Out of band alarm.
8:Band alarm.
System function Opt.0::reverse control(heating)
1::positive control(cooling)
Range highThe control is displayed after the Input type and Input range.
Range low


Communication address can be set from 0 to 255
Communication speed1200;  2400;  4800;   9600;

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