CC-8111 Series. Electronic Controller Proportional and Single Stage Relay General Instructions DEVICE INFORMATION SPECIFICATIONS

Transcription

1 CC8111 Series Electronic Controller Proportional and Single Stage Relay General Instructions DEVICE INFORMATION The CC8111 Controller is a proportional controller which directly accepts either a 1000 ohm sensor input(s), a 1 to 15 Vdc control signal, or a 135 ohm slidewire input and produces a proportional voltage output signal which operates a relay giving two position output control. This device consists of two temperature bridges, a solid state control amplifier, a comparator amplifier, and a relay output stage. The CP8111 is used in systems where solid state temperature sensing is desired to control electrically actuated devices SPECIFICATIONS 1. Controlling inputs Designated as input A and input B. a. Temperature One or two 1000 Ohm resistance type temperature sensors (TS8000 Series). b. Slidewire transducer 135 Ohms. Requires two resistors and connects to input A only. See input wiring diagrams No. 5 for further details. c. Voltage signal 1 to 15 Vdc. Requires removal of jumper between OP1 and IV1 terminals. Signal connected between IV1 (+) and COM () terminals. 2. Outputs a. Relay SPDT with adjustable dropout and selectable differential of 0.5, 1, 2 and 4 volts. Table1 Contact Rating 24 Vac 120 Vac 240 Vac Amps (continuous) Amps (inrush) Pilot duty sealed (VA) Pilot duty inrush (VA) b. Voltage signal 2 to 15V with a 10 ma. capacity. Output terminals OP1 (+) to COM (). c Vdc with 35 ma. capacity. Supply can be used for powering other TAC System 8000 controllers or adaptors. d ±.5 Vdc with 4 ma. capacity. Supply can be used for powering TAC System 8000 remote setpoint adjustors (AT8100 Series) and auxiliary bridges (CN8101, TS8601). 3. Supply inputs. Requires 24, 120 or 240 Vac 50/60 Hertz depending on models selected, 4 V.A. 4. External Screw Terminal Nomenclature Figure1 L1, L2 Supply voltage 50/60 Hz. GND Chassis ground NC1 Normally closed relay contact C1 Relay common NO1 Normally open relay contact Vdc power supply IV1 1 to 15 Vdc input (+) OP1 2 to 15 Vdc output (+) Vdc power supply ISA Input A AB1 Input, auxiliary bridges or setpoints ISB Input B COM System common () Printed in U.S.A. 9/08 Copyright 2008 TAC All Rights Reserved. F171925

2 Table2 Part Number Selection and Function Chart. Adjustable Functions Pin Selectable Functions Part Number Power Req. (50/60 Hz) Setpoint A Setpoint B Diff. Range Relay Dropout Throttling Range Authority Ratio Relay Diff. CC CC CC to 95 F 5 to 35 C 41 to 95 F 5 to 35 C 1 to 54 F Std. By Added Res F 2 to 12 Vdc (IV1 to Com) 3, 6 or 9 F 1.6, 3.4 or 5 C Aux Vdc (IV1 to Com) Units dual marked in C and F 5. Dimensions a. Direct reset: A temperature decrease on input B resets input A setpoint downward. b. reset: A temperature decrease on input B resets input A setpoint upward. ADJUSTMENTS & JUMPERS See Figures 5 and 6. INSTALLATION DEFINITIONS Figure2 1. Mode of operation Either direct acting or reverse acting. a. Direct acting (D.A.) means that an increase in temperature at the sensor(s) cause the CC8111 voltage output (OP1) to increase. b. acting (R.A.) means that an increase in temperature at the sensor(s) causes the CC8111 voltage output (OP1) to decrease. 2. Reset control action The direction of reset determines whether input A setpoint is reset upward or downward on a temperature decrease at input B. 1. Mounting The CC8111 can be mounted in any position on any surface free from severe vibration or shock. Avoid locations where excessive moisture or corrosive fumes are present. The unit is provided with a 71/2 inch piece of 37/8 inch wide mounting track. Mounting hardware required (not provided) is two #8 screws. Ambient Limits: 40 to 140 F (4 to 60 C). 2. Wiring Procedure a. Codes: Make all electrical connections in accordance with job wiring diagrams and in compliance with national and local electrical codes. b. Sensors: For sensor wiring, use No. 18 gauge twisted pair cable (6 turns per foot or equivalent) up to 200 feet. On runs over 200 feet, recalibrate the system or use larger diameter wire. Caution: Shielded cable (Belden No or equivalent) must be used when it is necessary to install the sensor leads in the same conduit with power wiring, or when it is known that high RFI/EMI generating devices are near. Ground the shield at the controller only on the COM () terminal. Figure3 Location Chart. 2 Copyright 2008 TAC All Rights Reserved F171925

3 Table3 Controller Setup and Definition Chart. Control/Sensor Sensor A or Sensor B Bridge A Bridge B Setpoint A/B (SPA) (SPB) Ratio Authority (ISB only) Throttling Range (T.R.) Relay Differential Jumper J1 J2 J3 J4 J5 Range/Output Function Jumper or Terminal Connection ISA, ISB to 6.2 ISA, ISB to COM COM 6.2 COM C 4195 F.5 to to to to 1 15 Table 6 Aux. 3 F (1.6 C) A 6 F (3.4 C) B 9 F (5 C) A with AB shorted.5 Volt.5 1 Volt 1 2 Volts 2 4 Volts 4 Factory Set COM F CAL Relay Dropout 2 to 12 Vdc 6V 1:1 A 1 Changes Res. when temp. changes Resistance voltage divider Input A/B temperature adjustment Amount of temp. change of the B bridge required to reset the A bridge 1 F. Sets amplifier volts per deg. change at ISA input Volts change between pullin and dropout Voltage where the relay drops out Definition/Function Balco Res. Pos. Temp. Coeff. Provides a voltage output relationship to sensor resistance Sensor A/B temp. at which OP1 to COM is 7.5 ±.5 Vdc Degrees temp. change at ISAinput to produce a 3 Vdc change OP1 to COM C1 makes to NC1 OPERATION Refer to Figure 4). The CC8111 Controller consists of two temperature sensing bridges with setpoint, one proportional voltage control amplifier, one voltage comparator amplifier with relay output and two power supplies. Input A and B sensors Each requires a 1000 Ohm, at 21 C (70 F), resistance type (Balco wire) temperature sensor. The sensor increases in resistance with an increase in temperature (3.96 Ohms/ C or 2.2 Ohm/ F). These changes are detected by input A and input B bridges. Input A and B bridges Each bridge input accepts the sensor resistance signal. The bridge converts the resistance signal change into a dc millivolt signal change. The output from input A bridge is fed to the proportional control voltage amplifier. The output from input B bridge is fed to the ratio selection network. Each bridge can be connected for either direct or reverse acting bridge output. This is accomplished on input A bridge by connecting J1 jumper (red/blue) to the pin marked COM for direct acting or to the pin marked +6.2 for reverse acting. Input B bridge jumper J2 (white/blue) is connected to the pin marked COM for direct acting or the pin marked +6.2 for reverse acting. Input A and B bridges each have temperature setpoint adjustments. Ratio selection network Ratio selection networks allow selection of the desired input B bridge gain in order to accomplish resetting type control systems. The output of the ratio selection networks is fed to the proportional voltage control amplifier. Proportional voltage control amplifier The control amplifier sums and amplifies the millivolts output signals from input A and B bridges. The control amplifier output is a proportional 2 to 15 Vdc signal which is fed to the voltage comparator amplifier. The amplifier uses overall negative feedback as a means of gain adjustment. The gain adjustment becomes the throttling range adjustment of the CC8111. Comparator amplifier This comparator receives the variable voltage from the control amplifier and compares it to the relay drop out and differential voltage settings. As these points are exceeded, the comparator changes state to operate the relay for two position output control action. CALIBRATION The CC8111 Controller normally requires no field calibration. The unit is factory calibrated for 7.5 ±.5 Vdc output between OP1 and COM, when input A and B sensors are at 21 C (70 F) temperature (1000 Ohms resistance) and their respective setpoints set for 21 C (70 F). The relay dropout voltage is factory set for 6.0 Vdc with a 1 volt differential selected. A throttling range of 3 F and a ratio of 1:1 have been selected. The input bridges are connected for (A) direct and F Copyright 2008 TAC All Rights Reserved 3

4 (B) reverse acting outputs. If field calibration becomes necessary or a calibration check is desired, proceed as follows: Caution: Line voltage is present on terminals L 1 and L 2. Figure4 Controller and System Block Diagram. 1. Disconnect sensor to input A terminals. Replace input A sensor with a 1000 Ohm ±.1% resistor (SYZE12987 test kit). Input A sensor will be connected to the CC8111 as follows: a. Between ISA and +6.2 terminals for direct acting controller output. b. Between ISA and COM terminals for reverse acting controller output. 2. Disconnect sensor to input B terminals. Replace input B sensor with a 1000 Ohm ±.1% resistor (SYZE12987 test kit). Input B sensor will be connected to the CC8111 as follows: a. Between ISB and +6.2 terminals for direct acting controller output. b. Between ISB and COM terminals for reverse acting controller output. 3. Remove cover from CC8111. Disconnect and tape the J3 jumper (Blue) on the CC Disconnect all input leads for the AB1 terminal on CC Connect a 20,000 Ohm per volt VOM between OP1 (+) and COM () terminals. Use a 15 to 20 Vdc scale range. 6. Rotate setpoint A (SPA) to the black dot by 68 F. The VOM should read 7.5 ±.5 Vdc. If not, rotate the SPA shaft until 7.5 ±.5 Vdc reading is obtained. Hold the shaft of the SPA firmly and then rotate the pointer in a CCW direction until the pointer is on the black dot by 68 F on the dial scale. 7. Connect the J3 jumper (blue) to the 1:1 ratio pin. 8. Repeat Step 6 above but now use setpoint B (SPB) adjustment. 9. Change SPA until VOM reads 6.0 ±.3 Vdc. The relay should have dropped out. If not, rotate stage 1 pot until relay dropout occurs. 10. The CC8111 is now calibrated. 11. Replace all sensors and the cover to the CC8111 and remove the meter. CHECKOUT 1. Check nameplate for correct supply voltage and measure with a VOM between L 1 and L 2 terminals on the controller. If the supply voltage is not present, check the power source for problems. 2. Check the 20 (1.5, +1) Vdc supply by measuring with a VOM between the +20 (+) and COM () terminals. If the 20 Vdc is not present or is out of tolerance, then: a. Check to see if the 20 Vdc supply is overloaded (35 ma. or greater). b. External device shorting the 20 Vdc supply. c. If neither A nor B above, consider the controller as defective and replace. 3. Check the +6.2 ±.5 Vdc supply by measuring with a VOM between the +6.2 (+) and COM () terminals. If the +6.2 Vdc is not present or is out of tolerance then: a. Check to see if the 6.2 Vdc supply is overloaded (7 ma. or greater). b. External devices shorting the 6.2 Vdc supply. 4 Copyright 2008 TAC All Rights Reserved F171925

5 c. If neither A nor B above, consider the controller as defective and replace. 4. To check output operation, proceed as follows: For input A: Pull jumper J3 and tape. a. If the CC8111 has been connected for direct acting output operation, short the +6.2 and ISA terminals together. The voltage as measured with a VOM between OP1 (+) and COM () terminals should be 2.5 Vdc or less. b. If the CC8111 has been connected for reverse acting output operation, short the ISA and COM terminals together. The voltage as measured with a VOM between OP1 (+) and COM () terminals should be 15 Vdc or greater. c. Disconnect short across ISA and +6.2 or COM. For input B: Pull jumper J1 and tape. Remove sensor A. a. Repeat A, B and C above, except substitute ISB in the place of ISA. 5. Reconnect jumpers and sensors and the system is ready for operation. APPLICATIONS The units are shipped with input (A) direct and (B) reverse acting connections, throttling range (TR) at 3 F, ratio 1:1 and relay differential set to 1 volt. Other bridge connections will require recalibration. Single Input The controller may be used for a single input on either input A or B. The bridge action, sensor connections and internal connections are shown below. Table4 Input A B Dual Input Dual Input. Bridge and Input Action Internal Connections J1 to COM, J2 disconnect and tape J1 to +6.2, J2 disconnect and tape J1 disconnect and tape, J2 to COM, J3 on 1:1 ratio pin J1 disconnect and tape, J2 to +6.2, J3 on 1:1 ratio pin Sensor Connection ISA and +6.2 ISA and COM ISB and +6.2 ISB and COM The controller can be used as a control with reset action by using both A and B inputs. Determine the mode of operation of input A control, select the ratio or authority of input B and determine the reset control action. Set up the controller per Table 5. Table5 Input A Action Direct Sensor A Between +6.2 and ISA On dual input applications, J3 is connected to desired ratio pin. For additional ratios, connect jumper J3 to AUX pin and add additional resistors as shown below (See Figure 3 for location of pins and jumpers): Table6 Differential Inputs J1 to Pin COM ISA and COM +6.2 Reset Action of Input B J2 to Pin Sensor B Between Direct Reset +6.2 ISBCOM Reset COM ISB+6.2 Direct Reset COM ISB+6.2 Reset +6.2 ISBCOM Ratio Aux. Resistor Value (Connect between Aux. Pins) 2.5:1 29.4K, ±1%, metal film 5:1 57.6K, ±1%, metal film 10:1 115K, ±1%, metal film 20:1 221K, ±1%, metal film The controller can be used to respond to the difference between inputs A and B. Use sensor on ISA in the higher temperature media. Set differential to be maintained on SPA and SPB using SPA minus SPB as the selected differential number. Set ratio to 1:1. Table7 Input Sensor Connects Jumper Connection Relay Energizes A ISA6.2 J1 to COM Inc. Temp. A B ISBCOM J2 to 6.2 Dec. Temp. B The CC8111 differential range can be extended by setting SPA to the black dot by 68 F and placing the resistor selected from the table below between 6.2 and AB1 terminals. This will fix SPA to the indicated degrees in the table. The differential will be this fixed value minus the setting of SPB. Table8 Tank Differential Temperature Control. Setpoint A Degrees F Resistor ± 5% 1/4 Watt K K K K K K K F Copyright 2008 TAC All Rights Reserved 5

6 Figure5 Discharge Temperature Control with Outdoor Air Reset. Note: Connect J2 jumper to COM and refer to Dual Input Setup procedure. Figure6 Tank Differential Temperature Control. INPUT WIRING DIAGRAMS 1. Temperature Sensor(s) Input (Standard). Direct acting = DA, = RA. Room Sensor With Setpoint. Input A (J1) Input B (J2) Terminal DA RA DA RA COM 6.2 COM 8 ISA ISA ISB ISB Setpoint A adjusted for 21 C or 70 F Setpoint B adjusted for 21 C or 70 F Sensors Without Setpoint. Input A (J1) Input B (J2) Terminal DA RA DA RA COM 6.2 COM Blk 8 ISA ISA ISB ISB Blk 2. Remote Setpoints. Used with direct acting or reverse acting sensor inputs. Input A Input B Wire DA RA DA RA Red 6.2 COM 6.2 COM Yel AB1 AB1 AB1 AB1 Blue COM 6.2 COM Copyright 2008 TAC All Rights Reserved F171925

7 Note: Adjust SPA and SPB adjustments in CC8111 for 21 C or 70 F. Ratio select set for 1:1. 3. Night depression and/or morning warmup. Wire Direct Red 6.2 COM Yel AB1 AB1 Note: Adjust SPA in CC8111 for 21 C (70 ). Disconnect J3 jumper and tape end. Do not use TR greater than 3 F on CC Solar compensation using TS8531 sensor and CN8101 auxiliary bridge. Blue COM Temperature indication and control. TS8531 Sensor Leads Orange ISA ISE Orange ISB ISF Black ISE ISA Black ISF ISB Input A Input B Wire DA RA DA RA X 6.2 ISA 6.2 ISB Y ISA COM ISB COM J1 to COM J1 to 6.2 J2 to COM J2 to 6.2 Note: For temperature indication and control on input B, OP1 of the TSP is connected by a resistor, selected from the table below, to AB1 of the CC8111. Connect CC8111 jumper J3 as shown in the table for the ratio selected. Note: No calibration of CN8101 required. CN8101 Ratio Setting Degrees Reset (No Sun to Full Sun).5:1 70 F 1:1 35 5:1 7 10: : Ratio R Value Jumper J3 Connects To 1:1 None 1:1 ratio pin 5:1 45.3K, ± 1%, M/F Aux. ratio pin. 57.6K, ± 1% between aux. pins. 10:1 102K, ±1%, M/F Aux. ratio pin. 115K, ±1% between aux. pins. 15:1 158K, ±1%, M/F 15:1 ratio pin. 20:1 215K, ±1%, M/F Aux. ratio pin. 221K, ±1% between aux. pins. CC8111 Input A Action Solar Compensation Connected for: 7. AD8501 Automatic Reset Adaptor. Reset Action Increased Sun Load Resets Setpoint A: Down Up Up Down Ohm slidewire Input A only. F Copyright 2008 TAC All Rights Reserved 7

8 Note: 1. Remove jumper between OP1 and IV1 on CC Can be used with either D.A. or R.A. 9. Humidity indication and control reverse acting CC8111 output only. 8. Humidity control only reverse acting CC8111 output only. Note: 1. SPA adjustment becomes system calibration adjustment only. 2. Disconnect J2 jumper (wht/blu) and tape end. Note: 1. J1 jumper (red/blu) must be connected to pin marked Disconnect J2 jumper (wht/blu) and tape end. 3. SPA adjustment can be used for setting humidity control point. 10. Power Monitor Control Override. Note: Remove jumper between OP1 and IV1 terminals of CC8111. Power an isolation relay through the power monitor output contacts and wire the isolated contacts as shown below. Copyright 2008, TAC All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to change without notice. F TAC 1354 Clifford Avenue P.O. Box 2940 Loves Park, IL