AI708 Intelligent Temperature Controller
Temperature controller read the actual temperature value according to signal sampling of the temperature sensor ,then compares the actual temperature with the setting temperature,and adopt intelligent PID control algorithm to output an analog or switching value,so that drive relay or high-power actuators to achieve heating or cooling control,and it controls the actual temperature constantly in the setting value range.
TC/RTD/analog signal,universal software choose input.
0.3%FS high-accuracy signal measurement.
2 degree PID arithmetic with positive and negative control output.
Optional kinds of control output,heating control with linear output.
2 loop alarm,Optional kinds of alarm type.
Rich size,big LED display.
RS485 communication,ModBUS-RTU protocol.
Industrial level of EMC test and higher reliability.
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Features
- TC/RTD/Analog signal universal input, selected by software menu.
- With display, alarm and adjusting function.
- Measuring Accuracy: 0.3% F.S.
- Advanced Fuzzy algorithm & Two Degrees of Freedom PID Arithmetic.
- Optional control output, modularization design.
- Good anti-jamming.
- Switching power supply 100-240 VAC.
- Applied to system temperature control application.
Model
| Model | Output 1 | Output 2 | Alarm | RS485 | |
| 48*48 Size | AI708-4-RB10 | Relay output | Relay output | 1 | No |
| AI708-4-DB10 | 4-20mA current output | Relay output | 1 | No | |
| AI708-4-SB10 | SSR output | Relay output | 1 | No | |
| AI708-4-RB18 | Relay output | Relay output | 1 | RS48 5 | |
| AI708-4-DB18 | 4-20mA current output | Relay output | 1 | RS48 5 | |
| AI708-4-SB18 | SSR output | Relay output | 1 | RS48 5 | |
| AI708 - _ - RC10 | Relay output | Relay output | 2 | No | |
| AI708 - _ - DC10 | 4-20mA current output | Relay output | 2 | No | |
| AI708 - _ - SC10 | SSR output | Relay output | 2 | No | |
| AI708 - _ - RC18 | Relay output | Relay output | 2 | RS48 5 | |
| AI708 - _ - DC18 | 4-20mA current output | Relay output | 2 | RS48 5 | |
| AI708 - _ - SC18 | SSR output | Relay output | 2 | RS48 5 |
Note:
OUT1: 4-20mA current output, load resistance 6000ÎĐmax.
Relay output capacity: 3A/250Vac
SSR output capacity: 30mA/24Vdc
OUT2: Can be worked just under heating-cooling control(OT=3); under other control,
worked as alarm 3 (size:48*48 worked as alarm 2)
Relay output capacity: 1A/250Vac.
Alarm: Relay output capacity: 1A/250Vac
Main Technical Parameters
Whole controller parameters
| Power supply | 100-240VAC |
| Total current | <30mA (220VAC) |
| Ambient temperature | 0-50°C |
| Ambient humidity | 45-85% RH |
| Measurement accuracy | 0.3% FS ¹ 3 digits at 25°C |
| Control mode | ON/OFF control, PID heating control, PID cooling control, PID heating & cooling control |
| Communication function | RS485 communication interface, MODBUS RTU protocol |
| Panel protection level | IP65 |
| Temperature excursion | less than or equal to0.01% FS/°C |
| Dielectric strength | Between the connectors of power supply to relay output, power supply to signal input, relay output to signal input 2000 VDC; Between the low voltage signal isolated with each other 600 VDC |
Input signal table
| No. | Input signal | Measuring range | Resolution | Input impedance |
| 0 | K type thermocouple | -50~1300°C | 1°C | > 100ÎÎĐ |
| 1 | J type thermocouple | -50~1200°C | 1°C | > 100ÎÎĐ |
| 2 | E type thermocouple | -50~1000°C | 1°C | > 100ÎÎĐ |
| 3 | T type thermocouple | -50~400°C | 1°C | > 100ÎÎĐ |
| 4 | B type thermocouple | 600~1800°C | 1°C | > 100ÎÎĐ |
| 5 | R type thermocouple | -10~1700°C | 1°C | > 100ÎÎĐ |
| 6 | S type thermocouple | -10~1600°C | 1°C | > 100ÎÎĐ |
| 7 | N type thermocouple | -50~1200°C | 1°C | > 100ÎÎĐ |
| 8 | Reserved | |||
| 9 | PT100 | -199.9~850.0°C | 1°C | (0.2mA) |
| 10 | JPT100 | -199.9~500.0°C | 1°C | (0.2mA) |
| 11 | CU50 | -50.0~150.0°C | 1°C | (0.2mA) |
| 12 | CU100 | -50.0~150.0°C | 1°C | (0.2mA) |
| 13 | Linear voltage | 0~50mV | 0.01%FS | > 100ÎÎĐ |
| 14 | Linear current | 4~20mA | 0.01%FS | <110 ÎĐ |
| 15 | Linear voltage | 0~10V | 0.01%FS | > 100ÎÎĐ |
| 16 | Linear resistance | 0~400 ÎĐ | 0.01%FS | > 100ÎÎĐ |
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