Related Manuals for Nexen WEB CONTROL TC250
Summary of Contents for Nexen WEB CONTROL TC250
- Page 1 WEB CONTROL PRODUCTS User Manual TC250, TC450, and TC650 FORM NO. L-20184-A-0501...
- Page 2 In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this manual are subject to change without notice. Technical data listed in this manual are based on the latest information available at the time of printing and are also subject to change without notice.
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Page 3: Table Of Contents
TABLE OF CONTENTS Introduction ---------------------------------------------------------------------------------------------------------------------------------------- 1 Controller Operation -------------------------------------------------------------------------------------------------------------------------- 2 Installation ----------------------------------------------------------------------------------------------------------------------------------------- 3 Control Panels ----------------------------------------------------------------------------------------------------------------------------------- 4 Electrical Connections ------------------------------------------------------------------------------------------------------------------------ 8 Configuration ------------------------------------------------------------------------------------------------------------------------------------- 9 Calibration --------------------------------------------------------------------------------------------------------------------------------------- 12 Test Run ------------------------------------------------------------------------------------------------------------------------------------------ 15 Maintenance and Testing ------------------------------------------------------------------------------------------------------------------ 18 Troubleshooting-------------------------------------------------------------------------------------------------------------------------------- 21 Replacement Parts --------------------------------------------------------------------------------------------------------------------------- 25 Tension Sensor Specifications ----------------------------------------------------------------------------------------------------------- 25 Warranties --------------------------------------------------------------------------------------------------------------------------------------- 26 (iii) -
Page 4: Introduction
Accordingly, anyone who uses a procedure that is not recommended by Nexen must first satisfy themselves that neither their safety or the safety of the product will be jeopardized by the service method selected. -
Page 5: Controller Operation
CONTROLLER OPERATION Automatic control operation can be broken down into three parts (See Fig. 1). Tension Indicator No. 1 No. 1 Amplifier Tension Control Sensor Section Amplifier Section No. 2 No. 2 Tension Amplifier Sensor Exponential Control Operation Action Output Percent Indicator Point... -
Page 6: Installation
THE OUTPUT AMPLIFIER The output amplifier receives the signal from the PI section and amplifies it to the correct output signal level. This output level is shown on the indicator located on the front panel. INSTALLATION 1. For wall mounting, remove mounting feet from the controller base, then remove the rubber pads, and reinstall the mounting feet in the rear mounting holes This unit is an electronic instrument and... -
Page 7: Control Panels
CONTROL PANELS Tension Output Indicator Indicator Mode Switch OUTPUT Tension Set AUTO START STOP POWER Point Pot Operational Status AUTO Indicator Lights TENSION CONTROLLER MODEL TC450 Manual AUTO Control Pot START STOP OUTPUT POWER POWER Output Switch Power Switch FIGURE 3 FRONT PANEL (See Fig. - Page 8 7. MANUAL CONTROL POT the controlled unit, when set to the ‘OFF’ position. Normally set to the ‘ON’ position. Sets output manually during operation in the Manual Mode. It is used for setting the ‘START’ output 9. POWER SWITCH value during operation in the Automatic Mode. Controls power to the Tension Controller.
- Page 9 15. P. GAIN 19. STOP Proportional GAIN Pot. STOP Pot. controls output during ‘STOP’ cycle. 16. I. GAIN 20. STOP/TIMER Integral GAIN Pot. Sets duration of the 'STOP' cycle (0 to 10 seconds). 17. FILTER 21. TAPER Filter Sets taper rate for taper tension control. 18.
- Page 10 CONFIGURATION SWITCHES (Main PC Board "A") (See Fig. 6) 1. SW1 Rotary switch for setting the second digit of the Full Scale Range of the Tension Indicator. 2. SW2 Rotary switch for setting the first digit of the Full Scale Range of the Tension Indicator. 3.
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Page 11: Electrical Connections
ELECTRICAL CONNECTIONS Co n tro lle r E x t e r n a l s e t p o in t in p u t Te n s i o n 0 to 1 0 V S e n s o r N o . -
Page 12: Configuration
The Acceleration Relay enables the 7. Connect AC Power at 100, 110, 120, 200, 220, or acceleration circuitry. The acceleration 240VAC, either 50 or 60 Hertz, to Terminals 29, and circuit remains enabled as long as the 30, with Earth Ground to Terminal 28. Acceleration Relay is held closed. - Page 13 SET TAPER TENSION MODE (See Table 2) 1. Select desired mode from the following: TABLE 2 Internal Forward Mode S W 3 S W 3 - 4 S W 3 - 3 Used to apply a taper tension signal to a Internal winding clutch.
- Page 14 SET START LEVEL MODE (SW3-8) The output delivered during the Start phase of the Automatic Control Mode is called the Start Level. Start The Start Level can also be based upon the output at Level can be controlled in one of three ways. the end of the previous Automatic operation.
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Page 15: Calibration
increase is only available at Full Roll Diameter. As the roll TABLE 3 diameter decreases, the amount of Set Point increase also decreases, in direct proportion. The time duration of the increased Set Point value is controlled by the relay 1 2 3 4 5 6 that is applied to Terminals 24 and 25 for acceleration, and Terminals 23 and 25 for deceleration. - Page 16 ZERO ADJUSTMENT ( See Fig. 9) 1. Set Power Switch to “ON”. 2. Make sure Sensor Roll is mounted to “MB” Sensors NO. 1 DEC. T ZERO as described in “MB Sensor Manual, L-20127. NO. 2 DEC. L ZERO NO. 1 NO.
- Page 17 CALIBRATION USING ONLY ONE SENSOR NOTE: It is not necessary to perform "No. 2 Span". 1. Make sure that Sensor is wired correctly (See ELECTRICAL CONNECTIONS, step 3), and that the NOTE: This completes the basic calibration of the Jumper Wire is placed between Terminals 1 and 5. Tension Controller.
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Page 18: Test Run
TEST RUN After completing the Configuration and Calibration, a Test Run should be performed. Make the Test Run with the lowest tension web to be used in normal operation. The lower the tension in the web, the more sensitive it will be to system stability. If satisfactory control is achieved with a low tension web, there should be no problem with high tension webs. - Page 19 4. Response speed, or sensitivity, of the Controller can Any residual instability or tension lag can be be adjusted with the Gain Controls. Gain should corrected with the Deviation Detection Circuit. This always be adjusted while the web is moving at circuit senses large scale deviations between actual normal processing speeds, as increases in response and set point tension, then increases the correction...
- Page 20 AUTOMATIC MODE, STOP STATUS 3. The Stop Timer Pot determines the length of time the When the relay contacts connected to Terminals 21 and Stop Level output is applied to the brake. The “0” to 25 are opened, the Controller enters its Stop Status. The “10”...
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Page 21: Maintenance And Testing
PROBLEM: Impossible to Achieve Span Adjustment 1. If the Tension Indicator varies proportionately to 3. If the Tension Indicator display is less than the tension changes, but Span Adjustment cannot be applied tension, and the Span Adjustment Pot is set made, the Tension Sensor is sized incorrectly, or the at maximum. - Page 22 FUSES Protective fuses are accessible by opening the front panel of the Controller (See Fig. 11). When a fuse blows, FU3 Zero Tension turn off power to the Controller, and eliminate the cause Relay All models of the blown fuse, then replace the fuse. 2A, 250V Fast Blow FU2 not used FUI Output Fuse...
- Page 23 TABLE 4 Test Pin Values, Main Logic Board i t a i t a i g i l a t f l a - - - - - - - - - - - - - - - - - - l l u h t i .
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Page 24: Troubleshooting
TROUBLESHOOTING ISOLATE SECTION WHICH IS CAUSING THE PROBLEM. START Check if the DC Power Supply voltages are normal. Check the Power Supply Circuit. Check the voltages at the Power Supply Check Terminals (See Maintenance and Testing, Testing") (SEE "A") Check if the Tension Indicator reacts normally, when a load is Check the Tension Sensor Unit. - Page 25 (See "Electrical Connections") (See "Maintenance and Testing, Fuses") FORM NO. L-20184-A-0501...
- Page 26 Check the Tension Sensor Unit Determine if Zero Adjust- ment can be made. Unsuitable pillow block Check if the Sensor’s Load Plate mounting position. is in contact with the side wall. Sensor roll weight is outside of the rating. Defective Sensor Check if the voltage between Terminals "2"...
- Page 27 Check output and brake/clutch/drive In the Manual Mode, check if the output changes from 0 to 100% as MAN Control Pot is turned. Is the output switch set to ON? Set it to ON. Remove the cause of the blown fuse. Is the output protective fuse normal? (Output not fused on TC250) Model TC250 only:...
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Page 28: Replacement Parts
REPLACEMENT PARTS The item or balloon number for all Nexen products is used ITEM ITEM ITEM DESCRIPTION DESCRIPTION DESCRIPTION for part identification on all product parts lists, product ITEM ITEM DESCRIPTION DESCRIPTION price lists, unit assembly drawings, bills of materials, and... -
Page 29: Warranties
Exclusive Remedy The exclusive remedy of the Buyer for any breach of the warranties set out above will be, at the sole discretion of Nexen, a repair or replacement with new, serviceably used or reconditioned Product, or issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products.
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