GR818 series configuration instrument

- appearance: 48mm × 48mm; 48mm × 96mm; 96mm × 48mm; 72mm × 72mm; 96mm × 96mm;
- Input signal: thermocouple / RTD input; voltage and current signal input (0-10V/0-20mA)
- Power type: linear power supply; switching power supply
- main output: relay; logic level output; analog output (0-5V/0-10V/4-20mA); thyristor phase shift trigger; thyristor zero-crossing trigger
- Number of alarm output channels: no alarm; 1 relay; 2 relays; 1 logic level 1 relay; 1 logic level; 2 logic levels; 1 relay (normally open, normally closed) - wiring See the instrument)
- Enhanced function: no enhanced function; RS485 communication; transformer current detection; RS485 communication + transformer current detection; analog input channel 2 (0-10V/0-20mA)
- Extended input and output: no expansion; 2 input 2 output; 4 input; 4 output
- function code

—Rated voltage: AC100 (-15%) ~ 240V (+10%), 50/60 HZ
- Power consumption: ≤10VA
—Insulation strength: Power supply-input: 1500V AC 1min; input-relay output: 1500V AC 1min; power supply-relay output: 1500V AC 1min
—Insulation resistance: input-relay output: >20MΩ; input-power supply: >20MΩ; power supply-relay output: >20MΩ
- Working environment: Ambient temperature: 0 ° C ~ 50 ° C; Relative humidity: 35% ~ 85% RH (no condensation)
- Input type: K, E, J, N, W3-25, W5-26, S, B, R, T; PT100, CU50, 0-5V, 0-10V, 4-20mA
- Allow input impedance: thermocouple; ≤ 100Ω
- Measurement range: -200 ° C - 2300 ° C
- Resolution: 0.1, 1 can be set
- Basic error: ±0.5% FS
- Relay output: relay contact AC220V / DC30V, 3A; resistive load or specified
—Logic level output: When ON: DC12V (DC9V~15V); When OFF: DC below 0.5V; Maximum current: 30mA; Load resistance ≥1K
— SCR zero-crossing trigger signal: 100mA
—DC 4-20mA output : Allowable load resistance below 500Ω
- Alarm output (up to 2 points): AC220V/DC30V, 3A; resistive load or designation
- Communication function: RS-485 interface; transmission mode: half-duplex serial start and stop synchronization; transmission speed: 1200bps 2400bps 4800bps 9600bps 19200bps 38400bps 57600bps 115200bps; communication protocol: conform to Modbus RTU; transmission distance: maximum 500 meters (total length of connection ); number of connected stations: 65