THOMSON TSC 800 - V2.2 Service Manual
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THOMSON TSC 800 - V2.2 Service Manual

THOMSON TSC 800 - V2.2 Service Manual

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TSC 800
TRANSFER SWITCH CONTROLLER
INSTALLATION, OPERATING &
SERVICE MANUAL

Software Version 2.2

PM049 REV 10 08/09/25
th
9087A – 198
Street, Langley, BC Canada V1M 3B1
Telephone (604) 888-0110
Telefax (604) 888-3381
E-Mail: info@thomsontechnology.com
www.thomsontechnology.com

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  • Page 1: Software Version

    TSC 800 TRANSFER SWITCH CONTROLLER INSTALLATION, OPERATING & SERVICE MANUAL Software Version 2.2 PM049 REV 10 08/09/25 9087A – 198 Street, Langley, BC Canada V1M 3B1 Telephone (604) 888-0110 Telefax (604) 888-3381 E-Mail: info@thomsontechnology.com www.thomsontechnology.com...
  • Page 2 9087A – 198 Street, Langley, BC Canada V1M 3B1 Telephone (604) 888-0110 Telefax (604) 888-3381 E-Mail: info@thomsontechnology.com www.thomsontechnology.com...

  • Page 3: Table Of Contents

    TSC 800 TRANSFER SWITCH CONTROLLER TABLE OF CONTENTS INTRODUCTION 1.1. PRODUCT REVISION HISTORY 1.2. GENERAL DESCRIPTION INSTALLATION 2.1. GENERAL INFORMATION 2.2. NOTES TO INSTALLER 2.3. AC VOLTAGE SENSING INPUT 2.4. AC CONTROL POWER INPUT 2.5. OUTPUTS 2.6. SYSTEM PHASING-HIGH LEG DELTA SYSTEMS 2.7.
  • Page 4 TEST MODE SEQUENCE OF OPERATION 6.1.4. ABNORMAL SEQUENCE OF OPERATION 6.2. LCD DISPLAY OPERATION 6.4.1 OPERATOR INITIATED UTILITY POWER FAIL SIMULATION (LOAD TEST) 6.4.2 AUTOMATIC PLANT EXERCISE TEST 6.4.3 FOUR FUNCTION REMOTE TEST (FTS4 OPTION) TRANSFER FAIL FAULT RESET LAMP TEST...
  • Page 5 VOLTAGE SENSING 7.4.1. UTILITY UNDER VOLTAGE SENSOR PICKUP 7.4.2. UTILITY UNDER VOLTAGE SENSOR DROPOUT 7.4.3. UTILITY UNDER VOLTAGE SENSOR TIME DELAY (DROPOUT) 7.4.4. UTILITY OVER VOLTAGE SENSOR PICKUP 7.4.5. UTILITY OVER VOLTAGE SENSOR DROPOUT 7.4.6. UTILITY OVER VOLTAGE SENSOR TIME DELAY (PICKUP) 7.4.7.
  • Page 6 TSC 800 TRANSFER SWITCH CONTROLLER TSC 800 TYPICAL CONNECTION DIAGRAM TSC 800 SPECIFICATIONS TROUBLESHOOTING REPLACEMENT PARTS PRODUCT RETURN POLICY NOTES PM 049 REV 10 08/09/25 Thomson Technology...

  • Page 7: Introduction

    TSC 800 TRANSFER SWITCH CONTROLLER INTRODUCTION 1.1. PRODUCT REVISION HISTORY The following information provides an historical summary of changes made to this product since the original release. Software Version 2.2 08/08/01 Enabled Clock Time Save Feature 2.1 06/03/27 Enhanced Phase Balance Features New Features (Refer to Section 1.2)

  • Page 8: General Description

    Do not touch any components on the printed circuit board with your hands or any other • conductive equipment. Do not place the equipment on or near materials such as Styrofoam, plastic and vinyl. Place the use an anti-static bag for transporting the equipment on properly grounded surfaces and only equipment.

  • Page 9: Notes To Installer

    For 3 phase, 3 wire systems (i.e. no neutral) or high voltage systems, potential transformers must be used (this is also the case where only 1 of the 2 supplies are 3 ph 3 w). Refer to FIGURES 1-4 for voltage sensing connections.
  • Page 10 TSC 800 TRANSFER SWITCH CONTROLLER maximum external load is limited by output contact ratings (i.e. 10A resistive, 120/250VAC). Total AC control power requirements for each supply must be determined by adding both internal and external load requirements. PM 049 REV 10 08/09/25...

  • Page 11: Outputs

    MOV selection should typically be equal to or slightly greater than 1.3 times the nominal RMS voltage being applied to the inductive device. NOTE: Selecting an MOV of too low a value can/will result in a sustained short circuit and ultimately result in equipment failure.
  • Page 12 TSC 800 TRANSFER SWITCH CONTROLLER Autom atic Transfer Switch (Utility Supply) PH A PH B PH C Neural (UA) (UB) (UC) (Orange) (High Leg) 240V 208V 240V 120V 120V (Red) (Yellow) (W hite) PM 049 REV 10 08/09/25 Thomson Technology...
  • Page 13 480VAC L-L, 277VAC L-N 380VAC L-L, 220VAC L-N VOLTAGE INPUTS 208VAC L-L, 120VAC L-N 240VAC L-L, 120VAC L-N PT REQUIRED FOR TRANSFER SWITCH MECHANISM POWER (MUST BE SIZED TO SUIT POWER REQUIREMENTS). FIG:1 FIG:2 3Ø, 4W 208/380/480/600VAC DIRECT SENSING 1Ø, 3W 120/240VAC DIRECT SENSING NOTE: UTILITY VOLTAGE SENSING AND NOTE: UTILITY VOLTAGE SENSING SHOWN ONLY.

  • Page 14: External Panel Control Wiring

    2.8. REMOTE START CONTACT FIELD WIRING Field wiring of a remote start contact from a transfer switch to a control panel should conform to the following guidelines to avoid possible controller malfunction and/or damage. 2.8.1. Remote start contact wires (2 #14 AWG (2.5mm )) should be run in a separate conduit (ferromagnetic type) and in all cases separated from any AC wiring.

  • Page 15: Commmunication Cable

    TSC 800 TRANSFER SWITCH CONTROLLER 2.8.4. The remote start contact provided is voltage free (i.e. dry contact). Exposing the remote start contact to voltage or current levels in excess of its rating will damage the transfer controller. 2.9. COMMMUNICATION CABLE Communication cable wiring from the controller’s communication port must be suitably routed...

  • Page 16: Dielectric Testing

    DESCRIPTION The TSC 800 controller consists of two parts; a Lexan faceplate, which is mounted externally on the transfer switch door, and a printed circuit board (PCB), which is mounted inside the transfer switch door.
  • Page 17 Load on Utility supply LED light viewing window Load on Generator supply LED light viewing window NOTE: A lamp test feature is provided to test all LED lights as well as the LCD display. To activate the lamp test feature, simultaneously push the INCREMENT and DECREMENT pushbuttons.

  • Page 18: Printed Circuit Board

    FIGURE # 8 3.2. PRINTED CIRCUIT BOARD The printed circuit board (PCB) is shown in FIGURE 8. The PCB contains the following user interface items: 3.2.1. POWER SUPPLY INPUT VOLTAGE SELECTION The controller power supply input voltage level selection is made via two connector plugs, which are located on the PCB and are identified as HD1 and HD2.

  • Page 19: Terminal Blocks

    Transfer control terminal block for 115/230v input and output circuits 3.2.3. DIAGNOSTIC LEDs The TSC 800 controller provides four diagnostic LED lights that are mounted on the rear of the printed circuit board as per FIGURE 8. Their functions are described as follows: WATCHDOG...

  • Page 20: Communication Port

    The TSC 800 communication port utilizes a RS422 data transmission signal that is directly interconnected to the CIM module via an 8 conductor, shielded cable with plug-in RJ45 connectors. Refer to FIGURES 9 & 10 for detailed information on direct connected or remote connected PC applications with CIM module.
  • Page 21 **Communication cable wiring must be suitably routed to Personal connector protect it from sources of electrical interference. Refer to Computer installation section for further information. G:\ENGINEER\PRODUCTS\TSC800\852621.VSD FIGURE #9 TSC 800 WITH CIM MODULE & DIRECT CONNECTED PC (RS232) Communication Interface Module Phone TSC 800 Transfer Port 3B...
  • Page 22 The network system may be connected to a local PC or to a remote PC via telephone system and CIM module. Refer to FIGURE #11 for a typical TSC 800 network system with CIM module.

  • Page 23: Tsc 800 Display Menus

    TSC 800 TRANSFER SWITCH CONTROLLER TSC 800 DISPLAY MENUS The TSC 800 contains a Liquid Crystal Display (LCD) that is visible on the front faceplate. The LCD has pre-programmed display menus which are automatically displayed in an auto-Scrolling mode or they may be selected manually by pressing the ENTER or EXIT pushbuttons in succession until the desired menu is displayed.

  • Page 24: System Time Menu

    Offload Test Auto A utility power failure will over ride all but “Off”. In the event of a generator failure and the utility supply is available and considered normal, the ATS will return to the utility supply except when “Off” selected.
  • Page 25 Automatic Return to “Auto Mode” LCD DISPLAY ATS Mode Menu Displays two messages that may be toggled between YES or NO by pressing the INCREMENT or DECREMENT pushbuttons. Their functions are described as follows: Status message only, a change is required to gain access.
  • Page 26 ATS Mode Menu selected Auto mode). Offload Test When the Offload Test prompt is selected and entered, the generator will immediately start and operate offload and will not permit a load transfer. The test menu will display Continuous Test, to select a timed...
  • Page 27 OFF. Failing to do can result in cyclical engine starting. On loss of Utility supply in this state (loss of control power to the TSC 800) the engine start contact will drop out after approximately 4...

  • Page 28: Tsc 800 Program Menu

    Entering a level 1 password will permit a read only access. 5.4. SYSTEM OPERATION MENU The system operation menu provides the operator with information as to current status of both the utility and generator supplies. NOTE: The system operation menu screen may be momentarily replaced with a time delay countdown screen when a transfer sequence is initiated.
  • Page 29 Displays generator supply status conditions. There are twelve status conditions as follows: ATS In Off The ATS Mode has been set to OFF via the Internal or External switch input. The Controller will display the message “Controller Out of Service”.

  • Page 30: Timer Countdown Menus

    Timer countdown menus are automatically displayed when a specific time delay function occurs during a transfer sequence. When a time delay begins, the LCD display will indicate the time delay function name (e.g. Gen Start Delay) and the current time remaining in the countdown sequence.

  • Page 31: Utility Supply Menu

    PSD Max Open Time Transferring Syncing (Close Transition Feature Only) 5.6. UTILITY SUPPLY MENU The utility supply menu allows the operator to view the utility supply voltage and frequency values. LCD DISPLAY Util 60.0Hz Displays utility supply frequency in hertz (Hz). The frequency is displayed with a resolution of 1/10 of a hertz.

  • Page 32: Generator Supply Menu

    3-phase load sensing can only be selected if all 3 phases of the load bus are wired to the TSC 800 controller. Most transfer switches manufactured prior to December 2004 will not have the C phase load bus wiring installed and must be set for 1-phase load sensing.

  • Page 33: Stats Menu

    The TSC 800 data logging has the maximum number of events memory as follows: o The limit for the Total Transfers and SRC Fail Transfers is 10,000. o The limit for the Total Hours, Load On SRC1 Hours, and Load On SRC2 Hours is 160,000 hours.

  • Page 34: Operating Instructions

    When utility supply voltage drops below a preset nominal value (70 – 99% of rated adjustable) on any phase, an engine start delay circuit will be initiated. Following expiry of the engine start delay period (0 - 60 sec. adjustable) an engine start signal (contact closure) will be given.

  • Page 35: Normal Sequence Of Operation (Closed Transition Transfer)

    When utility supply voltage drops below a preset nominal value (70 - 99% of nominal, adjustable) on any phase, an engine start delay circuit will be initiated. Following expiry of the engine start delay period (0 - 60 sec. adjustable) an engine start signal (contact closure) will be given.

  • Page 36: Test Mode Sequence Of Operation

    When the utility supply voltage is restored to above the present values (70 - 99% of rated adjustable) on all phases, a re-transfer sequence will be initiated once the Utility Return timer expires. The utility will close its power-switching device when it is in synchronism with the generator supply via external logic device.
  • Page 37 If the transfer switch is supplied with a “Momentary” Closed Transition transfer control...

  • Page 38: Abnormal Sequence Of Operation

    6.1.4.1. GENERATOR FAILURE ON LOAD Should the generator set fail while on load, the transfer switch shall re-transfer the load back to the utility supply if within nominal limits. The utility return timer will be bypassed in this condition. NOTE: This operating condition applies to a normal utility failure as well as any test condition.
  • Page 39 The following LCD operation is provided in TSC 800 Software version 2.0 (or higher). SLEEP Mode: The LCD display will automatically turn off and go in to a “sleep” mode to preserve operating life time. The sleep mode will be activated if a faceplate key press is not activated within a 16 minute time period.

  • Page 40: Operator Initiated Utility Power Fail Simulation (Load Test)

    Using the INCREMENT pushbutton, select the current Minute of the day (e.g. 60 • minute) and press the ENTER pushbutton. Press the EXIT pushbutton and hold for 2 seconds to exit the time clock • adjustment mode (Automatic exit if no keypad depressed within 5 minutes).

  • Page 41: Automatic Plant Exercise Test

    The engine will remain operating until the stop time is reached, then the load will re-transfer back to the utility supply after the utility return timer has expired. The generator will repeat the test sequence as programmed.
  • Page 42 Engine Start: remain on until the FTS4 is placed in another position. The engine will start if the engine’s auto start controller is in the ”Auto” mode. If the primary source fails in this mode, and the secondary source is within parameters, the TSC 800 will initiate a transfer to the secondary source.

  • Page 43: Transfer Fail Fault Reset

    Utility Return Timer Cooldown Timer Warm up Timer This feature is typically used when testing to avoid waiting for the complete duration of the time period. To activate the bypass function, simultaneously press the DECREMENT and the ENTER keys during the timer operation.

  • Page 44: Manual Utility Re-Transfer

    When the TSC 800 is programmed with Phase Balance protection enabled, should a transfer occur due to an out of limit phase balance condition, an alarm message will be shown on the TSC 800 LCD display “UTIL (or GEN) UNBALANCED”. The Phase Balance feature may be user programmed to provide two different re-transfer operating sequences (i.e.

  • Page 45: Programming Instructions

    The reason the re-transfer is inhibited is phase unbalance is generally only detected when load is applied to the source and the condition will appear to clear when the load is removed, as such allowing a re-transfer to the failed source previously determined to have a phase balance fault will only result in multiple unnecessary transfers of the load between sources.

  • Page 46: Master Read / Write Mode

    To change a programmed parameter, use the INCREMENT or DECREMENT pushbuttons to scroll through the available options or to adjust a value up or down to the desired number. When the desired option or number is displayed, press the EXIT ENTER pushbutton to accept the new value.

  • Page 47: Exercise Timer

    (28 day), exercise time period. The timer is fully programmable for, day of week, time of day, duration of the test and type of test mode (i.e. On Load or Off Load). The exercise timer utilizes the TSC 800’s internal time clock for referencing all timing functions. The time clock has a 10-minute power reserve feature to retain correct time settings during short duration utility power failures.

  • Page 48: Auto Test Start Day/Week Number

    Rollover period is set longer than 7 days. 7.2.3. AUTO TEST START HOUR Select the hour of the day (e.g. 0-23 hour) that the generator set is to be started to begin its exercise period. 7.2.4. AUTO TEST START MINUTE Select the minute of the day (e.g.

  • Page 49: Auto Test Stop Minute

    TSC 800 TRANSFER SWITCH CONTROLLER 7.2.7. AUTO TEST STOP MINUTE Select the minute of the day (e.g. 0 to 59 minutes) that the generator set is to be stopped following its exercise period. 7.2.8. AUTO TEST MODE Select type of test mode desired. Three test modes are available as follows:...

  • Page 50: Utility Fail Callout

    “Fail to Transfer” alarm is manually reset via local pushbuttons or with the remote communication software. DISABLED: The controller will not initiate a callout when a “Fail to Transfer “ alarm condition occurs.

  • Page 51: Man Test Callout

    “Not In Auto” as locally selected via the four position external control switch. The callout signal will reset when the control switch is returned to the Auto position. DISABLED: The controller will not initiate a callout if the TSC 800 controller is not in the Auto mode of operation. 7.3.9.

  • Page 52: System Frequency

    Set to the desired phase balance protection for the utility and generator supply on 3 phase systems. The setting is entered on a percentage basis with a range of 3-30%. If the monitored supply voltage exceeds the programmed setpoint on any one phase, a transfer to the alternate source will be initiated following the phase balance time delay setting.

  • Page 53: Phase Balance Delay

    Each sensor is individually programmable for pickup and dropout voltage setpoints (i.e. adjustable hysteresis) in addition to transient time delay settings. The TSC 800 controller also provides under and over frequency sensing on both utility and generator supplies. Each sensor is individually programmable for pickup and...

  • Page 54: Utility Under Voltage Sensor Pickup

    7.4.3. UTILITY UNDER VOLTAGE SENSOR TIME DELAY (DROPOUT) Select the desired utility under voltage time delay setting. The setting is entered in seconds within a range of 0 to 10 seconds. If no delay is required, set this time delay to zero.

  • Page 55: Utility Over Voltage Sensor Dropout

    7.4.6. UTILITY OVER VOLTAGE SENSOR TIME DELAY (PICKUP) Select the desired utility over voltage time delay setting. The setting is entered in seconds within a range of 0 to 5 seconds. If no delay is required, set this time delay to zero.

  • Page 56: Generator Under Voltage Sensor Dropout

    (DROPOUT) Select the desired generator under voltage time delay setting. The setting is entered in seconds within a range of 0 to 10 seconds. If no delay is required, set this time delay to zero. 7.4.14. GENERATOR OVER VOLTAGE SENSOR PICKUP Set to the desired generator over voltage setpoint at which the internal voltage sensor picks up (i.e.

  • Page 57: Generator Over Voltage Sensor Time Delay (Pickup)

    7.4.16. GENERATOR OVER VOLTAGE SENSOR TIME DELAY (PICKUP) Select the desired generator over voltage time delay setting. The setting is entered in seconds within a range of 0 to 5 seconds. If no delay is required, set this time delay to zero.

  • Page 58: Generator Start Delay

    Select desired generator start delay time in seconds. The range of setting is 0 to 60 seconds. If no delay is required, set this time delay to zero. NOTE: The output relay is normally energized when the utility power is within limits and de- energizes to start the generator.

  • Page 59: Post-Transfer Delay (Ldc)

    Select desired post-delay time in seconds. The range of settings is 0 to 300 seconds. If no delay is required, set this time delay to zero.

  • Page 60: Load On Utility Programmable Output

    The following Programmable output features are provided in TSC 800 Software version 2.0 (or higher). The TSC 800 transfer controller output on terminal TB3-2 may be programmed for different control functions. The powered output is supplied from the Utility supply and must be used accordingly.

  • Page 61: Load On Generator Programmable Output

    This time delay is set to a time value, which is greater than the typical time that the transfer mechanism typically takes to operate from one supply position to the neutral position.

  • Page 62: Neutral Delay Timer (Ndt)

    7.5.11. NEUTRAL DELAY TIMER (NDT) This neutral delay timer setting is used for MCS style transfer switch models only. For ICS type transfer switches, neutral delay is set in Programming Menus “Load on Gen” and “Load on Utility Programmable Outputs”-DELAYED TRANSFER. Refer to sections 7.5.8 and 7.5.9 for programming information.

  • Page 63: Neutral Delay Bypass

    The TSC 800 transfer control logic includes an adjustable time delay feature to detect when a transfer switch mechanism fails to operate. This time delay is set to a time value which is greater than the typical time that the transfer mechanism typically takes to operate from one supply position to the opposite supply position.

  • Page 64: Manual Utility Transfer Return

    Select desired utility return delay time in minutes. The range of settings is 0.0 to 50.0 minutes. If no delay is required, set this time delay to zero. NOTE: The utility return delay will be bypassed should the generator fail during the time delay period.

  • Page 65: Max Sync Time

    (sources being separated from), the Transfer Fail logic will be initiated. Select desired time in seconds. The range of settings is 1 to 999 seconds. This feature is only active when the TSC 800 Closed Transition Input (TB2- 12) is activated.

  • Page 66: Voltage Sensing Calibration

    The TSC 800 software program provides voltage-sensing calibration for the utility, generator and load sensors. All voltage-sensing circuits are factory calibrated to specific voltage levels prior to shipment of the transfer switch. Recalibration in the field is rare and in most cases only the Span Calibration needs minor adjustment.

  • Page 67: General

    TSC 800 TRANSFER SWITCH CONTROLLER zeroing, factory zero calibration should provide accurate readings with no adjustments required. Zero calibration is only required on first time setup of new software where zero correction factors are unknown. Using the original correction factors determined at the factory...

  • Page 68: Utility Voltage Calibration

    ZERO function selected. NOTE: The phases being calibrated for zero must have a true zero reference to ground to allow proper calibration. A zero voltage reference should be achieved as a result of a near 0 ohms resistance through the source supply windings through to the neutral...
  • Page 69 TSC 800 TRANSFER SWITCH CONTROLLER 7.6.2.1.3. Use the INCREMENT or DECREMENT pushbuttons to adjust the correction factor number while observing the displayed voltage level. Adjust the correction factor number to obtain 0VAC on the display. 7.6.2.1.4. With the correct voltage displayed, press the ENTER pushbutton to accept the correction factor number.
  • Page 70 AC voltmeter. To attain the highest degree of calibration accuracy for the Span, adjust the correction factor to attain a TSC 800 voltage value of 1 volt above and 1 volt below the actual value, in each case note the...

  • Page 71: Generator Voltage Calibration

    A zero voltage reference should be achieved as a result of a near 0 ohms resistance through the source supply windings through to the neutral star point connection which in turn is solidly bonded to the building ground at one point in the system (where both the step down...
  • Page 72 AC voltmeter. To attain the highest degree of calibration accuracy for the Span, adjust the correction factor to attain a TSC 800 voltage value of 1 volt above and 1 volt below the actual value, in each case note the...

  • Page 73: Load Voltage Calibration

    Where this ground reference path does not exist a true zero may not be achievable, as the load sensing inputs to the TSC 800 will be floating. If this ground path does not exist the TSC 800 sensing inputs for the load bus must be temporarily grounded to provide this true zero reference.
  • Page 74 AC voltmeter. To attain the highest degree of calibration accuracy for the Span, adjust the correction factor to attain a TSC 800 voltage value of 1 volt above and 1 volt below the actual value, in each case note the...
  • Page 75 With the correct voltage displayed, press the ENTER pushbutton to accept the correction factor number. Record the correction factor number on the TSC 800 programming sheet for future reference if required. 7.6.4.2.6. Repeat the above procedures for all remaining phases of the generator supply as required.

  • Page 76: Tsc 800 Programming Data Sheets

    TSC 800 TRANSFER SWITCH CONTROLLER TSC 800 PROGRAMMING DATA SHEETS PM 049 REV 10 08/09/25 Thomson Technology...
  • Page 77 TSC 800 TRANSFER SWITCH CONTROLLER PM 049 REV 10 08/09/25 Thomson Technology...
  • Page 78 TSC 800 TRANSFER SWITCH CONTROLLER PM 049 REV 10 08/09/25 Thomson Technology...
  • Page 79 TSC 800 TRANSFER SWITCH CONTROLLER PM 049 REV 10 08/09/25 Thomson Technology...
  • Page 80 TSC 800 TRANSFER SWITCH CONTROLLER PM 049 REV 10 08/09/25 Thomson Technology...

  • Page 81: Tsc 800 Typical Connection Diagram

    CONTROL POW ER INPUT VOLTAGE MUST FACEPLATE: 5.5" x 5.5" [140m m x 140m m ] MATCH TSC 800 MODEL TYPE PRINTED CIRCUIT BO ARD: 6.30"W x 12.00"H [160m m W x 305m m H] DRAW ING1 04-12-15 11:00 AM...

  • Page 82: Tsc 800 Specifications

    - 100ma nominal (no external load connected) SOURCE VOLTAGE SENSING: • - Direct 120-600VAC nominal, single or three phase - 50/60Hz - +/- 0.5% accuracy of setting @ 25° C OPERATING TEMPERATURE: • - 15° C to +50° C OUTPUT CONTACTS (Form C, 10A,120/250VAC resistive) •...

  • Page 83: Troubleshooting

    TSC 800 TRANSFER SWITCH CONTROLLER TROUBLESHOOTING A number of problems can cause the TSC 800 controller not to function properly. Refer to the following list of typical problems. Consult the factory for any detailed information or for any problems not listed.
  • Page 84 Possible Causes Will not transfer to generator Confirm voltage unbalance condition by viewing alarm state on TSC 800 LCD. In this state the load is locked to the source upon failure of utility utility source until the TSC 800 is reset source (cont’d)
  • Page 85 Contact Thomson Technology for possible corrective solutions. Engine runs for no apparent reason Verify the TSC 800 has not been set for a manual or auto off load test operation. If yes, select “Auto” (“None” in firmware versions 1.7 and earlier).
  • Page 86 “Max Transfer Fail Time” or “Max Find Neutral Time” or set too low - Max Transfer Fail Time: Set for 15 seconds or greater on MCS style ATS, or 3 seconds on ICS style ATS - Max Find Neutral Time: Set for 6.0 seconds for MCS style ATS or 0.0 seconds for ICS style ATS.

  • Page 87: Product Return Policy

    1. Transfer Switch Model code (e.g. TS 873AA0200AS) 2. Transfer Switch Serial Number (e.g. W-022345) The above information can be found on the transfer switch rating plate located on the outside of the ATS door. For other parts not listed, please contact Thomson Technology.
  • Page 88 TSC 800 TRANSFER SWITCH CONTROLLER NOTES ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________...

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