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TCU00000 Datasheet(PDF) 2 Page - Red Lion Controls. Inc |
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TCU00000 Datasheet(HTML) 2 Page - Red Lion Controls. Inc |
2 / 10 page DESCRIPTION (Cont’d) OPTIONS A linear 4 to 20 mA or 0 to 10 VDC output signal is available to interface with actuators, chart recorders, indicators, or other controllers. The output signal can be digitally scaled and selected to transmit one of the following: % output power, process temperature value, process temperature value deviation or setpoint value. For Linear DC control applications, the adjustable output demand dampening, output deadband and output update time parameters expand the versatility of the TCU with final control devices. The optional Heater Current Monitor serves as a digital ammeter for heater current monitoring. Current transformer accessory (CT005001), is required. An alarm event output can be programmed to signal when the heater or heater control devices have failed, before damage to process material occurs. The Heater Break alarm triggers under two conditions: 1) The main output (OP1) is “on” and the heater current is below the heater current alarm value, indicating an aged or failed heater. 2) Output (OP1) is “off” and the heater current is more than 10% of the alarm value, indicating a shorted heater control device or other problem. The optional Motorized Valve Positioner directly controls the position of a valve by the use of twin outputs (open and close) to control the direction of motor rotation. The motor position defines the opening position of the valve. Two control modes are possible: position control, which makes use of the slidewire feedback signal supplied with the positioner and velocity control, in which no slidewire feedback signal is used. Parameters are provided to adjust the operation of the valve. These include: Valve activity hysteresis Valve update time Variable control dampening Slidewire signal fail action Adjustable valve position limits. The valve positioner TCU achieves tight process control, yet minimizes unnecessary valve activity. An alarm event output or display alarm can be programmed under loss of slidewire feedback or under valve fail detection. The optional Second Analog Input (0-20 mA DC) can be configured as a remote setpoint signal or as a secondary process signal. Configuration of the second analog input as a remote setpoint signal allows ratio control, master setpoint/multiple slave operation, and the ability to cascade the TCU with another controller (external cascade). Configuration of the second input as a secondary process signal allows operation as a two-process cascade controller within a single unit (internal cascade). In either control mode, parameters are provided to scale, configure, communicate and monitor the activity of both analog inputs. A square law linearizer function can be used to linearize signals derived from flow transmitters. The optional RS485 multidrop serial communication interface provides two- way communication between a TCU unit and other compatible equipment such as a printer, a programmable controller, or a host computer. In multipoint applications the address number of each unit on the line can be programmed from 0-99. Up to thirty-two units can be installed on a single pair of wires. The Setpoint value, % Output Power, Setpoint Ramp Rate, etc. can be interrogated or changed by sending the proper command code via serial communications. Alarm output(s) may also be reset via the serial communications interface option. An optional Type 4X/IP65 rated bezel is available for wash down and/or dirty environments, when properly installed. Modern surface-mount technology, extensive testing, plus high immunity to noise interference makes the controller extremely reliable in industrial environments. SAFETY SUMMARY All safety related regulations, local codes and instructions that appear in the manual or on equipment must be observed to ensure personal safety and to prevent damage to either the instrument or equipment connected to it. If equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Do not use the TCU to directly command motors, valves, or other actuators not equipped with safeguards. To do so, can be potentially harmful to persons or equipment in the event of a fault to the unit. An independent and redundant temperature limit indicator with alarm outputs is strongly recommended. The indicators should have input sensors and AC power feeds independent from other equipment. SPECIFICATIONS 1. DISPLAY: Dual 4-digit Upper Temperature Display: 0.4" (10.2 mm) high red LED Lower Auxiliary Display: 0.3" (7.6 mm) high green LED Display Messages (Model dependent): “OLOL” - Appears when measurement exceeds + sensor range. “ULUL” - Appears when measurement exceeds - sensor range. “OPEN” - Appears when open sensor is detected. “SHrt” - Appears when shorted sensor is detected (RTD only) “....” - Appears when display values exceed + display range. “-...” - Appears when display values exceed - display range. “SLid” - Appears when loss of slidewire signal is detected. “VALV” - Appears when valve actuator error is detected. 2. POWER: Switch selectable for 115/230 VAC (+10%, -15%) no observable line variation effect, 48 to 62 Hz, 10 VA 3. ANNUNCIATORS: LED Backlight Status Indicators (Model dependent): %PW - Lower auxiliary display shows power output in (%). DEV - Lower auxiliary display shows deviation (error) from temperature setpoint. OP1 - Main control output is active. AL1 - Alarm #1 is active. AL2 - Alarm #2 is active (for Dual Alarm Option). OP2 - Cooling output is active (for Cooling Option). OPN - Valve positioner OPEN output is active (for Valve Positioner option). CLS - Valve positioner CLOSE output is active (for Valve Positioner option). CUR - Lower auxiliary display shows heater current (for Heater Current Monitor option). SEC - Lower auxiliary display shows second analog input (For Second Analog Input option). MAN - Flashing: Controller is in manual mode. REM - ON: controller is in remote setpoint mode (Second Analog Input option). - OFF: controller is in local setpoint mode (Second Analog Input option). - Flashing: controller is in Manual control mode (Second Analog Input optional). 4. CONTROLS: Four front panel push buttons for modifying and setup of controller functions and one external input for parameter lockout or other functions. 5. MAIN SENSOR INPUT: Sample Period: 100 msec Response Time: 300 msec (to within 99% of final value w/step input; typically, response is limited to response time of probe) Failed Sensor Response: Main Control Output(s): Programmable preset output Display: “OPEN” Alarms: Upscale drive DC Linear: Programmable preset output Normal Mode Rejection: 40 dB @ 50/60 Hz (improves with increased digital filtering. Common Mode Rejection: 100 dB, DC to 60 Hz Protection: Input overload 120 VAC for 30 seconds. 6. THERMOCOUPLE: Types: T, E, J, K, R, S, B, N, Linear mV Input Impedance: 20 M Ω all types Lead resistance effect: 20 µV/350 Ω Cold junction compensation: Less than ±1°C error over 0 - 50°C ambient temperature range. Disabled for Linear mV type. Resolution: 1°C/F all types, or 0.1°C/F for T, E, J, K, and N only. 7. RTD: 2, 3 or 4 wire, 100 Ω platinum, alpha = 0.00385 (DIN 43760), alpha = 0.003916 Excitation: 0.175 mA Resolution: 1 or 0.1 degree Lead Resistance: 7 Ω maximum 8. RANGE AND ACCURACY: Errors include NIST conformity and A/D conversion errors at 23°C after 20 min. warm-up. Thermocouple errors include cold junction effect. Errors are expressed as ±percent of reading and ± 3/4 LSD unless otherwise noted. TC TYPE RANGE ACCURACY WIRE COLOR (ANSI) T -200 to +400°C -328 to +752°F 0.20% + 1.5°C 0.20% + 2.7°F blue E -200 to 750°C -328 to +1382°F 0.20% + 1.5°C 0.20% + 2.7°F violet J -200 to +760°C -328 to +1400°F 0.15% + 1.5°C 0.15% + 2.7°F white K -200 to +1250°C -328 to +2282°F 0.20% + 1.5°C 0.20% + 2.7°F yellow R 0 to +1768°C +32 to +3214°F 0.15% + 2.5°C 0.15% + 4.5°F black S 0 to +1768°C +32 to +3214°F 0.15% + 2.5°C 0.15% + 4.5°F black B +200 to +1820°C +300 to +3308°F 0.15% + 2.5°C 0.15% + 4.5°F grey N -200 to +1300°C -328 to +2372°F 0.20% + 1.5°C 0.20% + 2.5°F orange mV -5.00 to 56.00 0.15% + 1 LSD __ RTD (385) -200 to +600°C -328 to +1100°F 0.10% + 0.5°C 0.10% + 0.9°F __ RTD (392) -160 to +600°C -256 to +1100°F 0.10% + 0.5°C 0.10% + 0.9°F __ OHMS 1.0 to 320.0 0.15% + 1 LSD __ 2 |
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Similar Description - TCU00000 |
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