The process value signal is connected via a universal input. A supplementary analog input can be used for heater current measurement, as an external setpoint input or for position feedback measurement of motorised stepping controllers. The optional 3rd input is a universal input that can be used for several functions e.g. temperature dependant setpoint correction or differential control.
The 8840 comes fitted with 4 process outputs – either relays or up to 2 universal outputs that can be used for operating a solid state relay, linear current/voltage output or to power a two-wire transmitter. Optionally there are two additional optocoupler outputs.
Specification Product Category: Single Loop controller Dimensions and size: 96mm x 48mm x 118mm (HxWxD), 1/8 DIN Primary Input Type: Universal (TC, RTD, DC linear V, DC Linear mA/mV) Other Inputs: Remote setpoint Output Type: Relay, SSR, DC Linear, Triac, Transmitter PSU Max. Number of Outputs: 6 Number of Control Loops: Single Control Type: PID, ON/OFF, TPSC/VMD, Retransmission output Max. Number of Alarms: 2 Power Supply:
20.4-26.4 VAC / 18-31VDC
Communications: RS 485 Communications Panel Sealing: IP65 Certifications: CE, UL Software Tools: N8800/N8840 Configurator Software
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