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Tempco TEC-2500 Instruction Manual

Self-tune fuzzi/pid process temperature controller
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TEC-2500
Self-Tune Fuzzy / PID
Process Temperature Controller
Serving Industry Since 1972
Instruction Manual
Agency Approvals
TEMPCO Electric Heater Corporation
607 N. Central Avenue • Wood Dale, IL 60191-1452 USA
Tel: 630-350-2252 • Toll Free: 800-323-6859
Fax: 630-350-0232 • E-mail: info@tempco.com
Web: www.tempco.com
Manual TEC-2500 Revision 9/2013

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Summary of Contents for Tempco TEC-2500

  • Page 1 Process Temperature Controller Agency Approvals TEMPCO Electric Heater Corporation 607 N. Central Avenue • Wood Dale, IL 60191-1452 USA Tel: 630-350-2252 • Toll Free: 800-323-6859 Fax: 630-350-0232 • E-mail: info@tempco.com Serving Industry Since 1972 Web: www.tempco.com Manual TEC-2500 Revision 9/2013...
  • Page 2 NOTES...

  • Page 3: Table Of Contents

    Using the Manual Copyright © 2011, Tempco Electric Heater Corporation, all rights Installers......Read Chapters 1, 2 reserved.
  • Page 4 NOTES...

  • Page 5: Chapter 1 Overview

    * Front panel sealed to NEMA 4X and IP65 TEC-2500 Fuzzy Logic plus PID microprocessor-based controller Two different methods can be used to program the TEC-2500. incorporates a bright, easy to read, 4-digit LED display which 1. Use the keys on the front panel to program the unit manually or 2.
  • Page 6 The function of Fuzzy Logic is to adjust PID parameters If the temperature difference is large, and the temperature internally in order to make manipulation of output value rate is small, then ΔMV is small. MV more flexible and adaptive to various processes. PID+Fuzzy Control has been proven to be an efficient The Fuzzy Rule may work like this: method to improve the control stability as shown by the...

  • Page 7: Ordering Code

    1–2 Ordering Code Accessories TEC-101-101 — Isolated 4–20mA/0–20mA analog output module TEC-101-114 — Isolated 1–5V/0–5V analog output module TEC-101-115 — Isolated 0–10V analog output module TEC-101-109 — Isolated 1A/240VAC triac output module (SSR) TEC-101-111 — Isolated 20V/25mA DC output power supply TEC-101-112 —...

  • Page 8: Programming Port And Dip Switch

    1–3 Programming Port and DIP Switch The programming port is used for off-line automatic setup and testing procedures only. Do not attempt to make any *SEL1-SEL5 represent those parameters which are connection to these pins when the unit is being used for selected by using SEL1, SEL2,...SEL5 parameters normal control purposes.

  • Page 9: Keys And Displays

    1–4 Keys and Displays The unit is programmed by using the three keys on the front panel. The available key functions are listed in the following table. How to display a 5-digit number: For a number with a decimal point, the display will be shifted one digit to the right: -199.99 will be displayed as -199.9 4553.6 will be displayed as 4553...

  • Page 11: Menu Overview

    1–5 Menu Overview...

  • Page 12: System Modes

    1–6 System Modes System Modes The controller performs closed loop control in its normal control mode condition. The Sleep mode: controller will maintain its normal control mode when you are operating the user menu, See section 4-11. setup menu, or display mode, reloading default values, or applying event input signals. Manual mode: Under certain conditions, the normal control mode will transfer to an exception mode.

  • Page 13: Parameter Description

    1–7 Parameter Description...
  • Page 15 Table 1.4 Parameter Description (page 3 of 7) Default Display Display Parameter Parameter Contained Contained Basic Basic Parameter Parameter Range Range Value Format Format Description Description Function Function Notation Notation N type thermocouple L type thermocouple PT 100 ohms DIN curve PT 100 ohms JIS curve 4 - 20 mA linear current input IN1 Sensor Type Selection...
  • Page 20 NOTES...

  • Page 21: Chapter 2 Installation

    Chapter 2 Installation Dangerous voltage capable of causing death can be present in this instrument. Before installation or beginning any troubleshooting procedures, the power to all equipment must be switched off and isolated. Units suspected of being faulty must be disconnected and removed to a properly equipped workshop for testing and repair.

  • Page 22: Wiring Precautions

    2–3 Wiring Precautions • Before wiring, check the label to verify the correct model • Beware not to over-tighten the terminal screws. number and options. Switch off the power while checking. • Unused control terminals should not be used as jumper •...

  • Page 23: Sensor Installation Guidelines

    2–5 Sensor Installation Guidelines Proper sensor installation can eliminate many problems in a The proper sensor type is also a very important factor in control system. The probe should be placed so that it can obtaining precise measurements. The sensor must have the detect any temperature change with minimal thermal lag.

  • Page 24: Rtd Input Wiring

    2–7 RTD Input Wiring The RTD connections are shown in figure 2.6, with the compensating lead connected to terminal 9. For two-wire RTD inputs, terminals 9 and 10 should be linked. A three-wire RTD offers the capability of lead resistance compensation, provided that the three leads are the same gauge and equal in length. For the purpose of accuracy, two-wire RTD should be avoided if possible.

  • Page 25: Ct/Heater Current Input Wiring

    2–9 CT/Heater Current Input Wiring...

  • Page 26: Event Input Wiring

    Because of the limited number of pins, pin 11 is used for both event input and RS-232. If you want to change function of the TEC-2500 from RS-232 to event input, you must modify jumpers J51 and J52 on the CPU board by opening jumper J52 and shorting jumper J51.
  • Page 27 2–11 Output 1 Wiring (Continued)

  • Page 28: Output 2 Wiring

    2–12 Output 2 Wiring Figure 2.15 Output 2 Wiring Max. 2A Max. 2A Resistive Resistive L oa d L oa d 120V/240V 120V/240V Mains Supply Mains Supply Relay Output Direct Drive 9 10 11 12 13 14 120V /240V 120V /240V Mains Supply Mains Supply Relay or Triac (SSR)

  • Page 30: Alarm 1 Wiring

    2–13 Alarm 1 Wiring 5V DC 5V DC Max. 2A Max. 2A Relay Relay Resistive Resistive Loa d Loa d 120V/240V 120V/240V Mains Supply Mains Supply Figure 2.16 Alarm 1 Wiring 9 10 11 12 13 14 Single Phase Load 5V DC 5V DC Relay...

  • Page 31: Alarm 2 Wiring

    2–14 Alarm 2 Wiring...
  • Page 32 2–15 RS-485...
  • Page 33 2–16 RS-232 When you connect an RS-232 module (CM94-2) to the connectors on a CPU board (C250), jumpers J51 and J52 must be modified as following: J52 must be shorted and J51 must be cut and left open. The location of the jumpers are shown in the following diagram. If you use a conventional 9-pin RS-232 cable instead of CC94-1, the cable must be modified according to the following circuit diagram.

  • Page 34: Analog Retransmission

    2–17 Analog Retransmission...

  • Page 35: Programming Port

    2–18 Programming Port See figure 1.3 in section 1-3 to find the programming port location.
  • Page 36 NOTES...

  • Page 37: Chapter 3 Programming Basic Functions

    Chapter 3 Programming Basic Functions This unit provides a useful parameter "FUNC" which can be used to select the If you don't need: function complexity level before setup. If Basic Mode (FUNC=BASC) is selected 1. Second setpoint for a simple application, then the following functions are ignored and deleted 2.

  • Page 38: Out1 And Out2 Types

    DP1: Selects the location of the decimal point for most (not all) process-related parameters. Range: (T/C and RTD) NO.DP, 1-DP (Linear) NO.DP, 1-DP, 2-DP, 3-DP Default: NO.DP IN1L: Selects the low scale value for Linear type input 1. IN1L Hidden if: T/C or RTD type is selected for IN1. IN1H: Selects the high scale value for Linear type input 1.

  • Page 39: Configuring User Menu

    3–3 Configuring User Menu Most conventional controllers are designed with a fixed order in which the parameters scroll. The TEC-2500 has the flexibility to allow you to select those parameters which are most significant to SEL1 you and put these parameters at the front of the display sequence.

  • Page 40: Heat Only Control

    See Manual Tuning: section 3-21 for manual tuning. The TEC-2500 contains a very clever PID and May be used if self-tuning and auto- Fuzzy algorithm to achieve a very small overshoot and very quick response to tuning are inadequate.

  • Page 41: Cool Only Control

    3–6 Cool Only Control ON-OFF control, P (PD) control, and PID control can be used for cool control. Set OUT1 to Setup Cool Control: DIRT (direct action). The other functions for cool only ON-OFF control, cool only P (PD) OUT1= control, and cool only PID control are the same as the descriptions in section 3-5 for heat only control except that the output variable (and action) for the cool control is inverse to the heat control, such as the following diagram shows:...

  • Page 42: Heat-Cool Control

    3–7 Heat-Cool Control The heat-cool control can use one of six combinations of control modes. Setup of parameters for each control mode are shown in the following table. NOTE: The ON-OFF control may result in excessive overshoot and undershoot problems in the process. The P (or PD) control will result in a deviation process value from the set point.

  • Page 43: Dwell Timer

    CPB Programming: The cooling proportional band is measured by % of PB with a range of 1~255. Initially set 100% for CPB and examine the cooling effect. If the cooling action should be enhanced then decrease CPB, if the cooling action is too strong then increase CPB. The value of CPB is related to PB and its value remains unchanged throughout the self-tuning and auto-tuning procedures.

  • Page 44: Process Alarms

    3–9 Process Alarms There are at most two independent alarms available by adjusting OUT2. If AL2 is selected for OUT2, then OUT2 will perform alarm 2 function. Now NONE can't be selected for A2FN, otherwise Er06 will be displayed. A process alarm sets an absolute trigger level (or temperature). When the process (could be PV1, PV 2, or PV1-PV2) exceeds that absolute trigger level, an alarm occurs.
  • Page 45 Although the above descriptions are based on alarm 1, the same conditions can be applied to alarm 2.

  • Page 46: Deviation Alarms

    3–10 Deviation Alarm OUT2 can be configured as alarm 2 by selecting AL2. If AL2 is selected for OUT2, then output 2 will perform alarm 2 function. Now NONE can't be selected for A2FN, otherwise Er06 will appear. A deviation alarm alerts the user when the process deviates too far Error Code 2 Types of deviation alarms: from the set point.

  • Page 47: Deviation Band Alarms

    3–11 Deviation Band Alarm A deviation band alarm presets two reference levels relative to set point. Two 2 types of deviation band alarms: types of deviation band alarm can be configured for alarm 1 and alarm 2. These DB.HI, DB.LO are deviation band high alarm (A1FN or A2FN select DB.HI) and deviation band Deviation band alarm 1: low alarm (A1FN or A2FN select DB.LO).

  • Page 48: Heater Break Alarm

    3–12 Heater Break Alarm Heater break alarm 1 A current transformer (Part Number TEC99999) should be installed to detect Setup: IN2=CT the heater current if a heater break alarm is required. The CT signal is sent to A1FN=PV2.L input 2, and the PV2 will indicate the heater current in 0.1amp resolution. The A1MD=NORM range of the current transformer is 0 to 50.0amp.

  • Page 49: Loop Break Alarm

    3–13 Loop Break Alarm A1FN selects LB if alarm 1 is required to act as a loop break alarm. Similarly, if Loop break alarm 1 alarm 2 is required to act as a loop break alarm, then set OUT2 to AL2 and Setup: A1FN=LB A1FN to LB.

  • Page 50: Sensor Break Alarm

    3–14 Sensor Break Alarm Alarm 1 or alarm 2 can be configured as a sensor break alarm by selecting Sensor Break Alarm 1 SENB for A1FN or A2FN. If alarm 2 is required as a sensor break Setup: A1FN=SENB alarm, then AL2 should be selected for OUT2. The sensor break alarm is A1MD=NORM, LTCH activated as soon as failure mode occurs.

  • Page 51: Pv1 Shift

    3–16 PV1 Shift In certain applications it is desirable to shift the controller display value from its actual value. This can easily be accomplished by using the PV1 shift function. Enter the configuration menu and press the "scroll" key to bring up the parameter SHIF. The value you adjust here, either positive or negative, will be added to the actual value.

  • Page 52: Failure Transfer

    3–17 Failure Transfer Failure mode occurs as: 1. SB1E The controller will enter failure mode if one of the following conditions occurs: 2. SB2E 1. SB1E occurs (due to input 1 sensor break or input 1 current below 1mA if 3.

  • Page 53: Bumpless Transfer

    3–18 Bumpless Transfer The bumpless transfer function is available for output 1 and output 2 (provided Bumpless transfer setup: that OUT2 is configured as COOL). 1. O1FT=BPLS 2. O2FT=BPLS Bumpless transfer is enabled by selecting BPLS for O1FT and/or O2FT and activated as one of the following cases occurs: Bumpless transfer occurs as: 1.

  • Page 54: Self-Tuning

    3–19 Self Tuning Self-tuning, which was designed using an innovative algorithm, provides an alternate option for tuning the controller. It is activated when YES is selected for SELF. When self-tuning is working, the controller will change its working PID values and compare the process behavior to previous cycles. If the new PID values achieve better control, then it changes the next PID values in the same direction.

  • Page 55: Auto-Tuning

    3–20 Auto tuning The auto-tuning process is performed at the set point. The process will oscillate around the set point during the tuning process. Set the set point to a lower value if overshooting beyond the normal process value is likely to cause damage. Auto-tuning is applied in cases of: •...
  • Page 56 If auto-tuning begins near the set point (warm start), the unit skips the warm-up cycle and enters the waiting cycle. Afterward, the procedures are the same as described for cold start. Auto-Tuning Error If auto-tuning fails, an ATER message will appear on the upper display in the following Auto-tuning error cases: •...

  • Page 57: Manual Tuning

    3–21 Manual Tuning In certain applications (very few), when using both self-tuning and auto-tuning to tune a process proves inadequate for the control requirements, you can try manual tuning. Connect the controller to the process and perform the procedures according to the flow chart shown in the following diagram. F igure 3.
  • Page 58 The PBu is called the ultimate P band, and the period of oscillation Tu is called the ultimate period in the flow chart in figure 3.23. When this occurs, the process is said to be in a critical steady state. figure 3.24 shows an example of a critical steady state.

  • Page 59: Signal Conditioner Dc Power Supply

    3–22 Signal Conditioner DC Power Supply Three types of isolated DC power supplies are available to supply an external transmitter or sensor. These are 20V rated at 25mA, 12V rated at 40mA and 5V rated at 80mA. The DC voltage is delivered to the output 2 terminals. Caution: To avoid damage, don't use a DC power supply beyond its current rating.

  • Page 60: Manual Control

    3–23 Manual Control Manual control may be used for the following purposes: 1. To test the process characteristics to obtain a step response as well as an impulse response and use these data for tuning a controller. 2. To use manual control instead of a closed-loop control if the sensor fails or the controller's A-D converter fails.

  • Page 61: Display Mode

    3–24 Display Mode Operation Press several times until (display) appears on the display. Then press to enter display mode. You can select more parameters to view by pressing or pressing reverse sequence. The system mode of the controller and its operation will remain unchanged. When the controller enters display mode the display will alternate between showing the display parameter and the parameter value.

  • Page 62: Heater Current Monitoring

    3–25 Heater Current Monitoring Accessory installed: TEC99999, a current transformer, can be equipped to measure the heater TEC99999 current. Select CT for IN2. The input 2 signal conditioner measures the heater current while the heater is powered and the current value will remain Setup unchanged while the heater is unpowered.

  • Page 63: Chapter 4 Full Function Programming

    Chapter 4 Full Function Programming 4–1 Event Input Refer to section 2-10 for wiring an event input. The event input accepts a digital type signal. Dry contacts or open collector pull low can be used to switch the event input. One of ten functions can be chosen by using (EIFN) in the setup menu.

  • Page 64: Second Set Point

    Because of the limited number of pins, pin 11 is used for both event input and RS-232. If you want to change function of the TEC-2500 from RS-232 to event input, you must modify jumpers J51 and J52 on the CPU board by opening jumper J52 and shorting jumper J51.

  • Page 65: Second Pid Set

    In certain applications the characteristics of a process are strongly related to its process Apply signal to value. The TEC-2500 provides two sets of PID values. When the process is changed to a different set point, the PID values can be switched to another set to achieve optimum conditions.

  • Page 66: Ramp And Dwell

    4–4 Ramp and Dwell Ramp The ramping function is performed during power up as well as any time the set point is changed. Choose MINR or HRR for SPMD, and the unit will perform the ramping function. The ramp rate is programmed by using RAMP, which is found in the user menu. Example without dwell timer Select MINR for SPMD, °C for IN1U, 1-DP for DP1, and set RAMP=10.0.

  • Page 67: Remote Set Point

    4–5 Remote Set Point Setup Selecting PV1 or PV2 for SPMD will enable the TEC-2500 to accept a remote set point FUNC=FULL signal. If PV1 is selected for SPMD, the remote set point signal is sent to input 1, and input 2 is used for the process signal input.

  • Page 68: Differential Control

    4–6 Differential Control Setup In certain applications it is desirable to control a second process such that its process PVMD=P1-2 value always deviates from the first process by a constant value. To achieve this, set the or PVMD=P2-1 following parameters in the setup menu. SPMD=SP1.2 FUNC=FULL IN1, IN1L, IN1H are set according to input 1 signal...

  • Page 69: Output Power Limits

    4–7 Output Power Limits Menu In certain systems the heater (or cooler) is over-powered such that the process is too heavily heated or cooled. To avoid an excessive overshoot and/or undershoot you can use the power limit function. Output 1 power limit PL1 is contained in the user menu. If output 2 is not used for cooling (that is, COOL is not selected for OUT2), then PL2 is hidden.

  • Page 70: Data Communication

    PARI=Parity Bit STOP=Stop Bit Count NOTE: If the TEC-2500 is configured for RS-232 communication, the EI (event input) and input 2 are disconnected internally. The unit can no longer perform event input function RS-485 Terminals (EIFN) or other input 2 functions.

  • Page 71: Analog Retransmission

    4–9 Analog Retransmission Analog retransmission is available for model number TEC-2500-XXXXXNX where N=3, 4 or 5. See ordering code in section 1-2. Setup Menu FUNC Setup Select FULL for FUNC in the setup menu. COMM Select a correct output signal for COMM which should be accordant with the AOFN retransmission option used.

  • Page 72: Digital Filter

    In certain applications the process value is too unstable to be read. A programmable Menu low-pass filter incorporated in the TEC-2500 can be used to improve this. This is a FILT first order filter with the time constant specified by the FILT parameter in the setup menu.

  • Page 73: Pump Control

    If this happens, the pump 2. Rapidly stabilized will be overly worn and waste additional power. To avoid this, the TEC-2500 provides a 3. Guaranteed pump stop reference constant REFC in the user menu.

  • Page 74: Remote Lockout

    Programming Guide for Pump Control: 1. Perform auto-tuning to the system under such conditions that the material (i.e., pressure) is exhausted at typical rate. A typical value for PB1 is about 10Kg/cm≈, TI1 is about 1 second, TD1 is about 0.2 seconds. 2.

  • Page 75: Chapter 5 Applications

    Regulated water supply systems are widely used in residential areas, water plants, chemical plants, electrical plants, semiconductor plants, etc. By taking advantage of its PUMP function, the TEC-2500 can be used to create an economical yet versatile solution for these applications. Here is an example: The water pressure in this example must be controlled at 10Kg/cm≈.
  • Page 76 Set the following parameters in the setup menu: FUNC=FULL COMM: optional IN1=4-20 IN1U=PU DP1=2-DP IN1L=0 IN1H=20.00 IN2=NONE OUT1=REVR O1TY=4-20 O1FT=0 OUT2=DCPS A1FN: optional EIFN=NONE PVMD=PV1 FILT=1 SELF=NONE SLEP=NONE SPMD=PUMP SP1L=5.00 SP1H=15.00 SP2F=DEVI Adjust the following parameters in the user menu: Key menu: SPMD A1SP: optional...

  • Page 77: Variable Period Full Wave Ssr (Vpfw Ssr)

    5–2 Variable Period Full Wave SSR (VPFW SSR) VPFW SSR is a variable period full wave solid-state relay. It can provide a zero cross output with superior controllability compared to a conventional SSR with a fixed time base. The block diagram of VPFW SSR is shown as follows: Unlike a conventional SSR, the VPFW SSR always gives the output an even number of half cycles (full wave) as shown in the following diagram.
  • Page 78 The advantages of VPFW SSR over conventional SSR are summarized in the following table: Output 1 and output 2 of the TEC-2500 can be connected to the VPFW SSR directly provided that a pulsed voltage drive output is ordered. Here is an example:...

  • Page 79: Heat Only Control

    5–3 Heat Only Control An oven is designed to dry the products at 150°C for 30 minutes and then stay unpowered for another batch. A TEC- 2500 equipped with dwell timer is used for this purpose. The system diagram is shown as follows: To achieve this function, set the following parameters in the setup menu.

  • Page 80: Cool Only Control

    5–4 Cool Only Control A TEC-2500 is used to control a refrigerator with the temperature below 0°C. To avoid set point adjustment beyond the desired range, SP1L is set at -10°C and SP1H is set at 0°C. Because the temperature is lower than the ambient, a cooling action is required, so select DIRT for OUT1.

  • Page 81: Heat-Cool Control

    5–5 Heat-Cool Control An injection mold is required to be controlled at 120°C to ensure a consistent quality for the parts. An oil pipe is buried in the mold. Since plastics are injected at a higher temperature (e.g., 250°C), the circulation oil needs to be cooled as its temperature rises.

  • Page 82: Ramp And Dwell

    5–6 Ramp and Dwell Example 1: Temperature cycling chamber A chamber is used to test the temperature cycling effect on personal computers. An external cycle timer is used to control the event input for switching the set point. The products under test are required to stay at 60°C for 1 hour and -10°C for 30 minutes.
  • Page 83 The TEC-2500 provides a 4–20mA signal to control the speed of the inverter. SP.P2 is chosen for EIFN in order to create a dual PID control. You can perform auto-tuning twice at SP1 and SP2 for the initial setup for the dual PID values. Refer to sections 3-20 and 4-3.

  • Page 84: Remote Set Point

    5–7 Remote Set Point An on-line multiple zone oven is used to dry paint. Since heat demand varies at different positions in the production line, multiple zones with individual controls should be used to ensure a consistent temperature profile. If you order a TEC- 2500 with a retransmission unit for the master controller, and retransmit its set point to input 2 on the rest of the slave controllers, each zone will be synchronized with the same temperature.

  • Page 85: Differential Control

    5–8 Differential Control In certain applications it is desirable to control a second process so that its process value always deviates from the first process value by a constant amount. Water tank 1 is 5.12 meters in height, and the level in water tank 2 needs to be maintained at 1 meter lower than the tank 1 level.

  • Page 86: Dual Set Point/Pid

    5–9 Dual Set Point/PID The TEC-2500 will switch between the two PID sets based on the process value, the set point, or either of the event inputs. As the control ramps up to the higher process value, the process characteristics change. When this happens, the original PID values are no longer valid.
  • Page 87 Example 2: Dual set point/PID A heat treating furnace is required to harden the mold at a high temperature (1000°C) for 30 minutes, then the mold is cooled down with a programmable ramp (20°C/minute) to a lower set point (200°C). Use the dual set point/PID and ramp/dwell functions for this application.
  • Page 88 5–10 RS-485 A tile making plant has five production lines. Each production line is equipped with 16 TEC-2500 units to control the temperature for the kiln. They want to program the controllers and monitor the process from the control room to improve quality and productivity.
  • Page 89 ADDR BAUD For a single unit application, it is adequate to order a TEC-2500 with RS-232 communication and DATA BC-Net software. Using the BC-Net software, the temperature data can be viewed and stored in PARI a file.

  • Page 90: Retransmit

    5–12 Retransmit An air-conditioned room uses two TEC-2500 units to control the temperature and humidity. The temperature and humidity must be recorded on a chart recorder. The preferred ranges for these two parameters are: 20°C to 30°C and 40% RH to 60% RH. The recorder inputs accept a 0–5V signal.

  • Page 91: Chapter 6 Calibration

    Chapter 6 Calibration Do not proceed through this section unless there is a definite need to recalibrate the controller. If you do recalibrate, all previous calibration data will be lost. Do not attempt recalibration unless you have the appropriate calibration equipment. If the calibration data is lost, you will need to return the controller to your supplier who may charge you a service fee to recalibrate the controller.
  • Page 92 Step 4. Set the DIP switch for voltage input. Press the scroll key until the display shows Send a 10V signal to terminals 10 and 11 with the correct polarity. Press the scroll key for at least 3 seconds. The display will blink for a moment until a new value is obtained. If the display didn't blink or if the obtained value is equal to -199.9 or 199.9, then calibration failed.
  • Page 93 Set the DIP switch to your desired position (refer to section 1-3). Automatic calibration procedures The programming port (see section 2-18) of the TEC-2500 can be used for automatic calibration. The equipment required for automatic calibration is available upon request.
  • Page 94 NOTES...

  • Page 95: Chapter 7 Error Codes And Troubleshooting

    Chapter 7 Error Codes and Troubleshooting This procedure requires access to the circuitry of a unit under live power. Accidental contact with line voltage is possible. Only qualified personnel should perform these procedures. Potentially lethal voltages are present. Troubleshooting procedures: 1.
  • Page 98 NOTES...

  • Page 99: Chapter 8 Specifications

    Input 2 Resolution: 18 bits Chapter 8 Specifications Power Sampling rate: 1.66x/second 90–264VAC, 47–63Hz, 15VA, 7W maximum Maximum rating: -2VDC minimum, 12VDC maximum 11–26 VAC/VDC, 15VA, 7W maximum Temperature effect: ±1.5uV/°C Input 1 resolution: 18 bits Common mode rejection ratio (CMRR): 120dB Sampling rate: 5x/second Sensor break detection: Maximum rating: -2VDC minimum, 12VDC maximum...
  • Page 100 Triac (SSR) Output Saturation low: 0mA (or 0V) Rating : 1A/240VAC Saturation high: 22.2mA (or 5.55V, 11.1V min.) Inrush Current : 20A for 1 cycle Linear output range: 0–22.2mA(0–20mA or 4–20mA), Min. Load Current : 50mA rms 0–5.55V (0–5V, 1–5V), 0–11.1V (0–10V) Max.

  • Page 101: Menu Existence Conditions

    A–1 Menu Existence Conditions...

  • Page 104: Factory Menu Description

    A–2 Factory Menu Description...

  • Page 105: Memo

    A–5 Memo Use the following table as a master copy for your settings. (page 1 of 2)

  • Page 107: Warranty

    Tempco Electric Heater Corporation is pleased to offer No product returns can be accepted without a completed Return suggestions on the use of its products. However, Tempco makes Material Authorization (RMA) form. no warranties or representations of any sort regarding the fitness TECHNICAL SUPPORT for use, or the application of its products by the Purchaser.
  • Page 108 The Electric Heating Element, Temperature Controls and Temperature Sensors Handbook REQUEST YOUR FREE 960 PAGE COPY TODAY! Call (800-323-6859) or E-mail (info@tempco.com) Specify Print Edition, CD-ROM or Both Serving Industry Since 1972 Experience the Advantages of our Diverse and Innovative Products TEMPCO Electric Heater Corporation 607 N.

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