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1/8 and 1/4 DIN Autotune Universal Input Controllers

Universal Temperature/Process Controllers

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Universal Temperature/Process Controllers

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Data Sheet (PDF)

$652.17

Item# CN8551RTD-R1

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Quantity	Price each
1-9	$652.17
10-24	$619.56
25-49	$586.95
50-99	$554.34
100-499	$521.74
500+	$489.13

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NEMA 4X (IP66) Front Panel Standard
Universal Power Supply
User-Selectable Ramp to Setpoint
Smooth Auto/Manual Operation

View Specs

Specs

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Analog Voltage Input Ranges 1 to 5 V
Communication Protocols (Sku Variant) RS232 or RS485
Analog Current Input Ranges 0 to 20 mA or 4 to 20 mA
Analog Input Accuracy ±0.2% FS
Control/Alarm Outputs, Maximum 2
Control Algorithms Autotune PID Manual Control Mode Remote Setpoint
Display Color Green
Display Digit Height 9.2 mm 14 mm
Maximum Ambient Humidity 90% RH non-condensing
Maximum Ambient Temperature 55 {C} (131 {F})
Measurement Type Temperature
Minimum Ambient Temperature 0 {C} (32 {F})
Number of Display Lines (Sku Variant) 2
Other Features (Sku Variant) Recorder Retransmission Low Voltage Power Software
RTD Connection 2
Remote Setpoint Capability 1 count/0.1 count
RTD Curves Supported 385
RTD Types Supported RTD( 2
Supply Frequency 50/60 Hz
Sampling Rate 0.1
Thermocouple Type J

The CN8500 Series temperature controller is versatile and user-friendly. The operator needs to review only those parameters relevant to the particular application. A dual digital display offers optimal process information at a glance. The dedicated upper display shows the process temperature, while the lower display displays setpoint and setup parameters. Individual LEDs identify the status outputs, alarms, digital communications, and special options. The CN8500 Series features a NEMA 4X front panel and a universal power supply that accepts 103 to 253 Vac and 103 to 330 Vdc. Control algorithms available are P, PI, PD, PID, and on/off. The autotune feature automatically sets proportional band, rate, and reset before the process reaches setpoint. These parameters provide quick stabilization of both the heating and cooling process without overshoot, hunting, or cycling. The standard dual control outputs can be configured in a variety of control and alarm applications such as heat, heat/cool, heat/alarm, cool, or cool/alarm. The ramp-to-setpoint feature allows the user to define the rate of rise to reach the setpoint, thus minimizing thermal shock to the load during start-up.

SPECIFICATIONS

Input Code	Type	Range	Resolution
TC	J Iron-constantan	-18 to 760°C	1°C
		0 to 1400°F	1°F
	K CHROMEGA™-ALOMEGA	-18 to 1349°C	1°C
		0 to 2460°F	1°F
	T Copper-constantan	-129 to 316°C	1°C
		-200 to 600°F	1°F
	N OMEGALLOY™	-18 to 1299°C	1°C
		0 to 2370°F	1°F
	R Pt/13% Rh-Pt	-18 to 1299°C	1°C
		0 to 3200°F	1°F
	S Pt/10% Rh-Pt	-18 to 1299°C	1°C
		0 to 3200°F	1°F
RTD	RTD 3-wire, 100 Ω Pt	-200 to 850°C	1°C
		-328 to 1562°F	1°F
	RTD 3-wire, 100 Ω Pt	-128.8 to 232.2°C	0.1°C
		-199.0 to 450.0°F	0.1°F
V5	1 to 5 V	Scalable (-1999 to 9999)	Selectable
	0 to 5 V
V10	2 to 10 V	Scalable (-1999 to 9999)	Selectable
	0 to 10 V
MV	10 to 50 mV	Scalable (-1999 to 9999)	Selectable
	0 to 50 mV
MA	4 to 29 mA	Scalable (-1999 to 9999)	Selectable
	0 to 20 mA

Performance
Accuracy: ±0.2% FS, ±1 digit
Setpoint Resolution: 1 count/0.1 count
Repeatability: ±1.0 count
Temperature Stability: 5 µV/°C max; 3 ìV/°C typical
Thermocouple Cold-Junction Tracking: 0.05°C/°C ambient
Common Mode Rejection: >100 dBA
Series Mode Rejection: >70 dBA
Process Sampling: 10 Hz (100 ms)

Inputs
Thermocouple Lead Resistance: 100 Ω max for rated accuracy
Response Time: 0.1, 1.0 or 10 s
Decimal Position: Selectable

Outputs
Output #1: Reverse acting (heating)
Output #2: Direct acting (cooling)
Mechanical Relay: Rated 5 A @ 120 Vac, 3 A @ 240 Vac
Current: 4 to 20 mA, 500 Ω max
Voltage: 20 Vdc pulse, 1 kΩ min load
Triac: Solid state relay, 120/240 Vac, zero voltage switched rated 1 A continuous, 10 A surge @ 25°C (77°F)
Alarms: Optically isolated triac rated 1 A, 120/240 Vac @ 25°C (77°F)

Control Characteristics
Setpoint Limits: Limited to configured range for thermocouple and RTD; limited to scaled range
Alarms: Adjustable for high/low, process or deviation
Rate: 0 to 900 s
Reset: 0 to 3600 s
Cycle Time: 0.2 to 120 s
Gain: 0 to 400
Gain Ratio: 0 to 2.0 (in 0.1 increments)
On/Off Deadband: 1 to 100 counts
Spread (Output 2): 0 to 100 counts (above setpoint)
Damping: Adjustable (low, normal or high)
Ramp to Setpoint: 1 to 100 minutes
Autotune: Operator-initiated from front panel
Manual Control: Operator-initiated from front panel

General
Power: 115 to 230 Vac ±10%, 50/60 Hz; 115 to 300 Vdc ±10% (auto-polarity)
Display: Dual LED, 4-digit process display, green menu/parameter display; 9.2 mm (0.37") high for 1/8 DIN models; 14 mm (0.55") process display for 1/4 DIN units
Power Consumption: Less than 6 VA (instrument) @ 120 Vac
Weight (1/8 DIN): 0.34 kg (12 oz)
Weight (1/4 DIN): 0.425 kg (15 oz)
Panel Cutout (1/8 DIN): 45 x 92 mm (1.772 x 3.622")
Panel Cutout (1/4 DIN): 92 mm (3.622") square
Dimensions (1/8 DIN Horizontal): 53 x 100 mm (2.1 x 3.95"); 18.3 mm (0.72") depth
Dimensions (1/4 DIN): 100 W x 100 H x 18.3 min bezel (3.95 x 3.95 x 0.72")
Panel Depth: 100 mm (3.937")
Front-Panel Rating: NEMA 4X (IP66)
Operating Ambient Range: 0 to 55°C (32 to 131°F) @ 90% RH max, non-condensing
Memory Protection: Solid state non-volatile memory
Connections: Rear barrier strip with locking terminals
Contacts: Twin bifurcated

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