The CN8240/CN8260 1/8 DIN vertical and 1/4 DIN temperature/ process controllers are extremely versatile and user-friendly. The operator needs to review only those parameters relevant to the particular application during setup. A dual digital display offers optimum process information at a glance. The dedicated upper display shows the process value, while the lower display shows setpoint and setup parameters. Individual LED's identify the status of outputs, alarms, digital communications, and special options. The CN8240/CN8260 features a NEMA-4X front panel and a universal power supply that accepts 100 to 250 Vac and 120 to 250 Vdc. A 24 Vac/24 Vdc power supply option is also available. Calibrations for most thermocouples and RTD's are available, as well as for millivolt linear, volt linear, and current linear inputs. Unlike the CN8200 1/16 DIN models, these controllers have plug-in output modules that can be changed in the field. In addition, a single output model can be converted to a dual output version in the field.
Eight-level ramp/soak control consisting of 8 ramps and 8 soaks is standard, and includes decimal display on thermocouple ranges, digital display and signal filtering, and a percentage of power limit setting. Control algorithms available are P, PI, PD, PID, or ON/OFF. The autotune feature automatically sets proportional band, derivative, and integral before the process reaches setpoint. These parameters provide quick stabilization of processes with minimum overshoot, hunting, or cycling.
The dual control outputs can be configured for a variety of control applications, and an additional two dedicated alarm outputs are also available. The CN8240/CN8260 offers a wide range of options, including RS-232, RS-485 digital communications, a variety of remote setpoint options, three contact/digital input modes, four transducer excitation voltages, and four auxiliary output ranges.
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† All amounts shown in USD Ordering Example: (1) CN8262-R1-R2-AL2 1/4 DIN dual mechanical relay output ramp/soak process controller with alarm, $500.00
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Size select from: 4 for 1/8 DIN 6 for 1/4 DIN
Number of Outputs select from: 1 for Single output 2 for Dual output
First Output select from: R1 for Relay DC1 for dc Pulse T1 for 1A SSR F1 for 4 to 20mA(500 ohm max.) FH1 for 4 to 20mA(1000 ohm max.)
Second Output(models CN8242 and CN8262 only) select from: Nothing(leave field blank) for No second output -R2 for Relay -DC2 for dc Pulse -T2 for 1A SSR -F2 for 4-20mA(500 ohm max.) -FH2 for 4-20ma(1000 ohm max.)
Alarms select from: Nothing(leave field blank) for No alarms -AL1 for Single alarm relay -AL2 for -Dual alarms
Communications select from: Nothing(leave field blank) for No communications -C2 for RS232 -C4 for RS485
Process Output Options select from: Nothing(leave field blank) for no options -PVSV1 for Process output - PV or SV - 4 to 20 mA -PVSV2 for Process output - PV or SV - 0 to 5 Vdc -DIC for Digital input switch closed -RSP4 for Remote setpoint - 0 to 5 Vdc -RSP5 for Remote setpoint - 1 to 5 Vdc -RSP6 for Remote setpoint - 0 to 20 mA -RSP7 for Remote setpoint - 4 to 20 mA
Low Voltage Power Input Option to operate unit select from: Nothing(leave field blank) for standard 100 to 250 Vac input power -LV for 24 Vac/Vdc input power option
Note: All combinations may not be valid, check spec sheet for valid part numbers.
CN8262 Series - 1/4 DIN Temperature/Process Controllers
CN8261 Series - 1/4 DIN Temperature/Process Controllers