Emerson Series 300 H-design User's Manual
Contents
1. A accessories 5 2 5 5 auxiliary circuits 1 2 battery 4 2 5 1 buttons push 3 1 bypass time delay 1 5 2 1 3 1 C cable lugs 1 1 preparation 1 1 catalog number inside cover cleaning 3 1 connections engine control contact 1 2 line 1 1 contact position indicators 1 3 contacts auxiliary 1 2 engine control 1 2 main 1 3 3 1 source availability signal 5 2 control features 5 1 load disconnect 5 4 motor load transfer 5 4 plant exerciser 5 1 5 2 5 3 controller 4 1 4 2 codes cover cover removal 4 2 disconnecting 3 1 time delay potentiometers 4 2 D DIP Switches 4 1 4 2 5 1 5 2 5 4 E electrical operation 1 5 engine exerciser 5 1 5 2 5 3 engine starting contacts 1 2 F features see control features frequency pickup and dropout settings 4 1 functional test 1 3 1 4 1 5 Printed in U S A INDEX G ground controller 1 1 H handle maintenance 1 3 warning 1 3 harness 1 2 disconnect plugs 3 1 HELP 800 800 2726 ASCO customercare asco com inphase monitor 5 4 inspection 3 1 installation 1 1 L labels engine starting contacts 1 2 inputs outputs 1 2 rating cover lights 1 4 5 1 load disconnect feature 5 4 lubrication 3 1 M maintenance preventive 3 1 manual load transfer 3 2 warning 3 2 manual operation 1 3 warning 1 3 motor load transfer f2. INSTALLATION Testing Power Conductors Do not connect the power conductors to the ASCO Series 300 transfer switch until they are tested Installing power cables in conduit cable troughs and ceiling sus pended hangers often requires considerable force The pulling of cables can damage insulation and stretch or break the conductor s strands For this reason after the cables are pulled into position and before they are connected they should be tested to verify that they are not defective or have been damaged during installation Protect the automatic transfer switch from construction grit and metal chips to prevent malfunction or shortened life of the ATS Connecting Power Conductors After the power cables have been tested connect them to the appropriate terminal lugs on the transfer switch as shown on the wiring diagram provided with this Series 300 Make sure the lugs provided are suitable for use with the cables being installed Standard terminal lugs are solderless screw type and will accept the wire sizes listed on the drawings provided with the Series 300 Be careful when stripping insulation from the cables avoid nicking or ringing the conductor Remove surface oxides from cables by cleaning with a wire brush When aluminum cable is used apply joint compound to conductors Tighten cable lugs to the torque specified on rating label Controller Ground A grounding wire must be connected to the controller
3. 7 Transfer to Emergency nee qi Poa po cele Us 4 seconds non adjustable Retransfer to Normal T ie Poeun P1 a A 5 minutes non adjustable Sensor Adjustments Voltage and frequency sensor pickup and dropout points are set to customer specifications if none specified standard factory settings are used To change a setting follow procedure on page 4 2 Use Tables 4 2 and 4 3 for settings and corresponding DIP switch actuators Any change in these settings may affect the normal operation of the automatic transfer switch This change could allow the load circuits to remain connected to a low voltage source Table 4 2 Voltage and Frequency Settings E0 Shaded DIP switches are standard factory settings of nominal S1 DIP DESCRIPTION LABELS SETTING FACT SET ADJ RANGE SWITCH 95 Actuator 3 off ol PU N Pickup 90 90 Actuator 3 on m v Actuator 1 off 90 Actuator 2 off N Normal Source Voltage 85 Actuator 1 on gt Actuator 2 off n DONN Dropout oe Actuator 1 off 9 ane Actuator 2 on m o Actuator 1 on m 192 Actuator 2 on m o Emergency Source Pickup 90 non adjustable Voltage Dropout 75 non adjustable Pickup 95 non adjustable Dropout 85 non adjustable Emergency Source bk Actuar oi F z ctuator 4 0 p PAE 60 50 60 50Hz 60Hz Z 50 Hz Actuator
4. Delay button Bypass Time Delay The unloaded running delay keeps the generator running for 5 minutes cool down period Then the generator should stop and the Emergency Source Accepted light should go off Source Accepted Normal Emergency O SECTION 2 SEQUENCE OF OPERATION Lights show position of transfer switch Transfer To Emergency Lights show the sources accepted Light for built in The sequence for load transfer to emergency source begins automati ASCO Power Transfer Switch engine exercise timer EMERSON Network Power gt blinks rapidly when button is held 5 sec cally when normal source voltage falls below the preset dropout point Transfer Switch Position while being set Source Accepted gt blinks slowly when or when Transfer Test button is pressed An under voltage condition Normal Emergency button is released set and during 20 min exercise period Normal Emergency on any phase of the normal source is detected by the sensor When the normal source voltage fails or Transfer Test Press for 15 Sec gt stays on after engine stops exerciser is enabled for weekly operation Bypass Time Delay Set Engine Exerciser Press until light FLASHES the Transfer Test button is pressed the SE relay de energizes and relay NR begins its timing cycle 1 or 3 seconds momentary normal source outage
5. Figure 4 2 Figure 4 3 Figure 4 4 on page 4 2 Use a small screwdriver to turn the potentiometer clockwise to increase the time delay or counterclock wise to decrease it See Figure 4 3 Use a ball point pen or similar pointed tool to slide the switch actuators left or right so they match the il lustration next to the setting left off right on Recheck the setting See Figure 4 4 Install the cover on the controller by hooking it on the left side and latching the right side Reconnect both harness plugs to the controller by aligning and pressing straight in until latches click Close the enclosure door 9 Close the enclosure door then restore both sources a If the transfer switch is in the Normal position first close the normal source circuit breaker then close the emergency source circuit breaker b If the transfer switch is in the Emergency position close the normal source circuit breaker The load will be automatically retransferred to the normal source Then close the emergency source circuit breaker 10 Turn the engine starting control to automatic continued o cover thumb latch E hook on OO left side L 1 S o ASTA VAS l HIGH VOLTAGE a f 9 volt alka
6. only occur when the phase relationship between sources is correct This completes the Functional Test of the ASCO Series 300 Automatic Transfer Switch Leave the engine generator starting control in the automatic position observe these lights The normal source must be available and the generator must be ready to start Check that the Normal Source Accepted light is on Source Accepted Normal Emergency Press and hold the Transfer Test button until the engine starts and runs This should happen within 15 sec Transfer Test The Emergency Source Accepted light should come on Source Accepted Normal Emergency The transfer switch should transfer to the Emergency position The Emergency Transfer Switch Position light should come on and the Normal light should go off Transfer Switch Position Normal Emergency If the transfer to emergency delay is used the transfer should occurs after a time delay up to 5 minutes For immediate transfer press the Bypass Time Delay button Bypass Time Delay The transfer switch should transfer back to the Normal position The Normal Transfer Switch Position light should come on and the Emergency light should go off Transfer Switch Position Normal Emergency If the retransfer to normal delay is used the retransfer should occur after a time delay up to 30 minutes For immediate retransfer press the Bypass Time
7. operating conditions Relubricate the operator if TS coil is replaced Order lubrication kit 75 100 Replacement parts Replacement parts are available in kit form When ordering parts provide the Serial No and Catalog No from the transfer switch nameplate Contact your local ASCO Power Technologies sales office representative or ASI In the United States call 1 800 800 ASCO 2726 or in Canada call 1 888 234 ASCO 2726 DISCONNECTING THE CONTROLLER The harness disconnect plugs are furnished for repair purposes only and should not have to be unplugged If the controller must be isolated follow these steps carefully Disconnecting the Plugs Do not unplug the controller until step 1a or 1b below is completed 1 Observe the position of the transfer switch a Ifthe transfer switch is in the Normal position place standby engine starting control in the off position Then open the emergency source circuit breaker If the transfer switch is in the Emergency position open the normal source circuit breaker Place the engine starting control in the test or run position Separate the quick disconnect plugs by squeezing the latches Do not pull on the harness wires Label remove and tape the signal wires connected to the engine start terminals on the transfer switch TB1 and TB3 or TB1 and TB2 Reconnecting the Plugs Do not reconnect the controller until step 1a or 1b and 2 below are completed 1
8. 4 on m n 3 phase Actuator 6 off D Voltage Phases 3 1 3 1 3 1 phase Actuator 6 on o If dropout voltage is set to 90 the pickup voltage must be set to 95 Table 4 3 Transformer Voltage Adjust Low setting shifts all voltage settings down 4 2 for example 240 V to 230 V or 480 V to 460 V DESCRIPTION LABELS FACTORY SETTING ADJUSTMENT S3 DIP SWITCH LOW Actuator 2 off N Voltage Adjust 4 2 LOW HI Actuator 2 on ny ADJUSTMENTS Do not make any setting changes while the controller is energized How to Change a Setting 1 Prevent the transfer switch from operating by discon necting one source first then the other as follows a If the transfer switch is in the Normal position open the emergency source circuit breaker Turn the engine starting control to off Then open the normal source circuit breaker b If the transfer switch is in the Emergency position open the normal source circuit breaker Turn engine starting control to test or run Then open the emergency source circuit breaker Disconnect both harness plugs from controller by squeezing the latches Do not pull on the wires Remove cover from the controller by releasing latch on right side with your thumb See Figure 4 1 Locate the appropriate adjustment potentiometer or DIP switch for the setting that you want to change Refer to Table 4 1 and Table 4 2 on page 4 1 and
9. ASCO Series 300 a oe gt Automatic Transfer Switches anua H design 600 through 1200 amps A DANGER TABLE OF CONTENTS DANGER is used in this manual to warn of high f voltages capable of causing shock burns or death section A WARNING INSTALLATION 00 0 00cc0ee cece ee 1 WARNING is used In this manual to warn SEQUENCE OF OPERATION 2 of possible personal injury A CAUTION _ sis TESTING amp SERVICE 0 cee ee 3 CAUTION is used in this manual to warn ADJUSTMENTS ee ee 4 of possible equipment damage CONTROL FEATURES 05 5 An experienced licensed electrician must install the ATS INDEX riss ya caciaas crainn eae k r Refer to the outline and wiring drawings provided peer Cove with ASCO Series 300 ATS for installation details P O a l AT 600 800 1000 amp sizes 1200 amp size ASCO Power 50 Hanover Road Florham Park New Jersey 07932 1591 USA 381333 201 E Technologies For sales or service call 1 800 800 2726 ASCO www ascopower com 7 ASCO POWER TECHNOLOGIES CANADA PO Box 1238 17 Airport Road Brantford Ontario Canada N3T 5T3 EMERSON telephone 519 758 8450 fax 519 758 0876 for service call 1 888 234 2726 ASCO www asco ca Network Pawer Nameplate Catalog Number Identification The Transfer Switch nameplate includes data for each A typical Catalog Number is shown belo
10. CONTROL FEATURES continued Optional Accessory 11BG SOURCE AVAILABILITY SIGNAL amp PROGRAMMABLE ENGINE EXERCISER MODULE 2 line display ASCO Tecnologie 8 ENGINE EXERCISER 3 buttons a a a Q yo 8 connections for source availability signal contacts CON OO RWH Figure 5 2 Accessory 11BG module mounted behind operator interface and connected to the controller includes source availability signal contacts and a programmable engine exerciser Source Availability Signal Contacts The module provides one Form C contact each for the normal and emergency sources signal the acceptability of the source as sensed by the controller The signal contacts operate in conjunction with the Source Accepted lights on the operator interface Field wiring terminals are provided as shown in Figure 5 3 and the wiring diagram Contact ratings 2 amps 30 Vdc 0 5 amp 125 Vac resistive OCATED ON INSIDE OF DOOR BEHIND OPERATOR INTERFACE E ON ENGINE EXERCISER MODULE TB Li 4 Noa AVAILABLE COMMON i 2 i SOURCE obese ie AVAILABILITY SIGNALS 9 fe re ee 2 AMPS 30 VDG resistive e NO 0 5 AMP 125 VAG resistive 4 T ENERGENCY AVAILABLE contacts shown de energized Li t ae COMMON NC i 6 ENERGENCY NOT AVAILABLE Figure 5 3 Source availability signal contacts Programma
11. DIP Automatic Transfer Switches provides a once a week SWITCH SWITCH 20 minute exercise period It occurs immediately when eid patina Set specie ae the Set Engine Exerciser push button is pressed and Sid Timer Actuator Actuator held for at least 5 seconds and then at the same time Disabled 7 off J 50n Lt or weekly thereafter A 9 volt alkaline battery DuracellR Exercise Actuator MN1604 EverreadyR 522 or PanasonicR 6AM6 is poeri 8 off LH amp furnished and installed in the controller to maintain the Excl xercise Actuator setting The battery jumper block must be shifted to the with Load 8 on o ON position See Figure 4 2 on page 4 2 E shaded DIP switches are standard factory settings Fill in day and time set Week Day_____ Time status light Press to cancel an active exercise Bypass Set Engine o period stops generator Press and hold for 5 sec or until status light blinks rapidly to set exercise period immediately Press until If Exercise with Load is set retransfers load to light FLASHES and every week hereafter generator starts Normal then stops generator after min cooldown If Exerciser with Load is set y transfers load to Emergency Figure 5 1 Operator panel pushbuttons and light Select below either Exercise without Load or Exercise with Load according to the setting of DIP switch S1 actuator 8 The load transfers from the Normal source to Emergency sourc
12. ION continued Functional Test The Functional Test consists of three checks manual operation voltage checks and electrical operation Do these checks in the order presented to avoid damaging the automatic transfer switch Read all instructions on the Wiring Diagram and labels affixed to the automatic transfer switch Note the control features that are provided and review their operation before proceeding 1 Manual Operation Test A detachable maintenance handle is provided on the frame of the Transfer Switch for maintenance purposes only Manual operation of the transfer switch should be checked before it is energized operated electrically Do not manually operate the transfer switch until both power sources are disconnected open both circuit breakers 1 After deenergizing both power sources open the enclosure door Locate and remove the mainte nance handle from the clips on the left side of the transfer switch frame Insert the handle into the hole in the molded hub on the left side of the operator See Figures 1 3 and 1 4 and Table B 2 Move the maintenance handle up or down as shown to manually operate the transfer switch It should operate smoothly without any binding If it does not check for shipping damage or construction debris Table B Maintenance handle positions ATS Position Handle Indicators up o E 0O Mf tacts open Normal i upper con i N C N rA lower contacts closed AA ppe
13. Observe the position of the transfer switch a Ifthe transfer switch is in the Normal position be sure that the standby engine starting control is still in the off position The emergency source circuit breaker still should be open b Ifthe transfer switch is in the Emergency position normal source circuit breaker still should be open 2 Reconnect the signal wires connected to the appropriate engine start terminals on the transfer switch See Section 1 Engine Starting Contacts The harness plugs and sockets are keyed Carefully align the plugs with the sockets and press straight in until both latches click 4 Restore the opposite source as follows a If the transfer switch is in the Normal position place the standby engine starting control in the automatic position Then close the emergency source circuit breaker If the transfer switch is in the Emergency position close the normal source circuit breaker The load will be automatically retransferred to the normal source after the Retransfer to Normal Delay For immediate retransfer press Bypass Time Delay button Place the engine starting control in the automatic position controller is disconnected TESTING amp SERVICE continued MANUAL LOAD TRANSFER This procedure will manually transfer the load if the Do not manually operate the transfer switch until both power sources are disconnected open both circuit breakers TROUBLE SHOOTING Note the cont
14. Transfer Switch EMERSON Network Power Transfer Switch Position Normal O Emergency O Bypass Time Delay Transfer Switch Test Source Accepted Normal oO Emergency Transfer OL Test Press for 15 Sec Set Engine Exerciser Press until light FLASHES Press and hold the door mounted Transfer Test button until the engine starts and runs This should happen within 15 seconds The transfer switch will operate to the Emergency position If the Transfer To Emergency Delay is used the transfer will occur after a time delay up to 5 minutes For immediate transfer press Bypass Time Delay button The Transfer Switch will operate back to the Normal position after the Retransfer To Normal Delay up to 30 minutes For immediate retransfer press Bypass Time Delay button Unloaded Running Engine Cooldown Delay allows engine to run unloaded for 5 minutes Clean and inspect the switch once a year De energize all sources then brush and vacuum away any excessive dust accumulation Remove the transfer switch barriers and check contact condition Replace contacts when pitted or worn excessively Reinstall the barriers carefully Maintain transfer switch lubrication The transfer switch has been properly lubricated and under normal operating conditions no further lubricating is required Renew factory lubrication if the switch is subjected to severe dust or abnormal
15. ansfer press Bypass Time Delay button ER relay energizes the TS coil is energized the transfer switch operates and all switch contacts mains controls auxiliaries reverse position The transfer switch is now supplying the load from the emergency source The transfer switch will remain in the Emergency position until the normal source is restored If the Transfer Test button is used the transfer switch will remain on emergency until the retransfer to normal delay times out Press to cancel the active exercise period stops engine now or after cooldown See See page 5 1 for complete instructions Hold 5 sec to set 20 min engine exercise period immediately engine starts and weekly thereafter Figure 2 1 Membrane controls and indicator lights Retransfer to Normal The sequence for load retransfer to the normal source automatically begins when the voltage sensor detects restoration of the normal source The voltage level must rise above the preset pickup point on all phases before the sensor will accept the normal source When the normal source is accepted by the sensor relay SE begins its timing cycle adjustable 1 sec to 30 min retransfer to normal delay For immediate retransfer press Bypass Time Delay button SErelay is provided with a time delay on pickup to prevent immediate load retransfer to the normal source The delay insures that the normal source has stabilized before reconnection of vital l
16. ble Actuator 1 on disable Actuator 4 on ES enable Actuator 1 off enable Actuator 4 off a CONTROL FEATURES continued OPTIONAL STRIP HEATER Accessory 44 Accessory 44 Strip Heater is designed to keep ambient temperatures within the Automatic Transfer Switch enclosure at acceptable levels This accessory consists of a mounting bracket with strip heater thermostat and terminal block A transformer with fuses is included when the power for the assembly is derived from voltages above 120 V ac The 120 V ac customer powered assembly does not include a transformer This optional accessory is available factory installed or in kit form Turn the thermostat s dial to required setting as shown Figure 5 4 Thermostat AVAILABLE KITS FROM ASCO thermostat dial turn counterclockwise to lower temperature turn clockwise to raise temperature Controls Strip Heater Accessory 44 Description Accessory Kit Description Accessory Kit Programmable Engine Exerciser 11BG K629830 120 volt amp Source Availability Contacts customer supplied voltage 44A K613127 001 without transformer Serial Communication Module 72A K601110 208 480 volt ATS derived voltage 44G K613127 002 with transformer 380 volt ATS derived voltage 44G K613127 with transformer 550 600 volt ATS derived voltage 44G K613127 003 with transformer
17. ble Engine Exerciser The module includes a programmable engine exerciser that provides for weekly or biweekly operation This optional exercise timer may have to be turned on enabled by setting the S1 DIP switch actuator 7 to off and S2 DIP switch actuator 5 to off A backup battery in the controller see page 4 2 and page 5 3 must be turned on to maintain the settings and to allow programming with the normal and emergency power turned off page 5 1 The programmable engine exerciser incorporates a 7 day or 14 day time base Proper controller settings must be made to determine whether or not the test will be done with or without load transfer S1 DIP switch actuator 8 See next page for instructions on setting the timer 5 2 DIP Switch Settings in the Controller see page 4 2 1 DIP S2 DIP FUNCTION SWITCH SWITCH Opt Timer Actuator Actuator Enabled 7 off eee 5 off ee Opt Timer Actuator Actuator Disabled 7 off N 5on o Exercise without aA o Load Exercise mao Agor a Load 0 Shaded DIP switches are standard factory settings CONTROL FEATURES continued How to Set Optional Programmable Engine Exerciser part of Acc 11BG module A DANGER Hazardous voltage capable of causing shock burns or death is used in this transfer switch Deenergize both Normal amp Emergency power sources before programming the exerciser Navigating the Men
18. de NEC Article 700 and UL 1008 Also they are suitable for the requirements of NEC Article 517 Health Care Facilities NEC Article 701 Legally Required Standby Systems NEC Article 702 Optional neutral connections power connections Transfer Switch terminal block TB We for engine start gt of and switch position contacts power connections neutral connections Standby Systems NFPA 99 Health Care Facilities and NFPA 110 Emergency and Standby Power Systems Rating Label Each automatic transfer switch contains a rating label to define the loads and fault circuit withstand closing ratings Refer to the label on the transfer switch for specific values Do not exceed the values on the rating label Exceeding the rating can cause personal injury or serious equipment damage Controller membrane controls 800 and 1000 amp size in typical enclosure with location of customer connections membrane controls Controller neutral connections power connections Transfer Switch terminal block TB for engine start and switch position contacts power connections neutral connections 1200 amp size in typical enclosure with location of customer connections SECTION 1 Series 300 Automatic Transfer Switches are factory wired and tested Installation requires skid removal then securing the enclosure to the supporting foundation Remove the Shipping Skid Open the fr
19. delay The NR relay is provided with a time delay on dropout to override momentary outages and prevent nuisance starting of the engine driven generator If the normal source voltage returns above the sensor dropout setting before the time delay expires the NR relay timing cycle is reset to zero and relay SE energizes Hold 15 sec to start the engine generator and to transfer the load to emergency page 5 1 If the normal source voltage does not return above the sensor dropout setting before the time delay expires the NR relay de energizes and signals the engine driven generator to start At the same time a voltage and frequency sensor begins monitoring the emergency source The sensor will accept the emergency source only when both voltage and frequency reach preset pickup points Usually about ten seconds elapse from dropout of the NR relay to acceptance by the sensor This time span occurs because the engine driven generator must crank start and run up to nominal pickup points For this reason if the Transfer Test button is pressed it must be held for 15 seconds If the emergency source is available immediately the sensor may accept it as soon as NR relay drops out When the emergency source is accepted by the sensor relay ER begins its timing cycle transfer to emergency delay ER relay is provided with an adjustable 0 to 5 minutes time delay on pickup to delay transfer of the load to the emergency source For immediate tr
20. e generator and back again if Exercise with Load is selected Exercise without Load DIP Switch S1 Actuator 8 off o How to Set Built In Timer Step Function Explanation Push Button Status Light Set Engine j gt blinks rapidly Exercise the generator now and Fxereimar O00000 a Pena every week at this time hereafter hold 5 sec blinks slowly 2 release 00800 exercise period now active Generator starts and runs press Bypass Time Delay stays on cancel active exercise period Generator stops stays on generator off Exerciser enabled repeats every 7 days Exercise with Load DIP Switch S1 Actuator 8 on os How to Set Built In Timer Step Function Explanation Push Button Status Light Set Engine blinks rapidly Exercise the generator now and 1 Fxerciser 0O00 PET ExErEI E penod every week at this time hereafter hold 5 sec blinks slowly Generator starts and runs 2 felease 00000 XECE penod NOW acing the load transfers to Emergency press Bypass blinks slowly The load retransfers to Normal then 3 cancel active exercise period generator runs for 5 minute cooldown Tima Dalay 90Sa light blinks slowly during cooldown 4 stays on generator off Exerciser enabled repeats every 7 days NOTE Every time SET ENGINE EXERCISER push button is pressed held 5 seconds the exercise period is changed 5 1
21. e Automatic Transfer Switch The contact resets either immediately following transfer or after the same delay as set for pre signal before transfer Time delay between the load disconnect control signal and initiation of transfer is set on the controller with DIP switch S2 actuators 6 7 8 as shown below Delay Before Transfer LD TDBT S2 DIP SWITCH oan cuze Co eee veas o arae Aaumorron TE al O Shaded DIP switches are standard factory settings Delay After Transfer LD TDAT S2 DIP SWITCH enable Actuator 6 on disable Actuator 6 off D Enabling the Delay After Transfer will cause the control signal to reset after the same delay as set for the Delay Before Transfer REMOTE CONTROL FEATURES These remote control features require a customer supplied normally closed contact suitable for a 5 V dc low energy circuit Refer to the Wiring Diagram provided with the ATS Activate appropriate DIP switch S2 actuators below Remote Test terminals CP6 7 Remote Transfer to Emergency CP8 9 RTSW S2 DIP SWITCH RT E S2 DIP SWITCH disable Actuator 3 on m ov disable Actuator 2 on mn enable Actuator 3 off a enable Actuator 2 off N Bypass Transfer Time Delay CP12 13 Inhibit Transfer to Emergency CP10 11 TD E N BYP S2 DIP SWITCH N E INHIB S2 DIP SWITCH disa
22. e made Sunday morning at 2 AM If you want your exerciser period to start at 2 AM on Sunday you cannot use this feature and the adjustment must be set to 0 Weekly or Bi weekly Day of Week Start Time Run Time Every weekly 0 23 hour 0 23 hour Sun through Sat 0 59 minute Alt bi weekly 0 59 minute 30 min is default setting Date exerciser was set CONTROL FEATURES continued INPHASE MONITOR FOR MOTOR LOAD TRANSFER Inphase monitoring logic controls transfer and retransfer of motor loads so that inrush currents do not exceed normal starting currents It avoids nuisance tripping of circuit breakers and mechanical damage to motor couplings The Motor Load Transfer feature is built into the controller DIP switch S1 actuator 5 activates this feature right ON left OFF FUNCTION S1 DIP SWITCH enable Actuator 5 on mo disable Actuator 5 off o 0 Shaded DIP switches are standard factory settings Note If the Motor Load Transfer feature is enabled it will be activated following the Load Disconnect Feature Delay Before Transfer delay LOAD DISCONNECT FEATURE Connect external circuits to the terminals indicated on the Wiring Diagram provided with the ATS The double throw Form C contact is rated for 28 VDC or 120 VAC 5 amps resistive The contact operates prior to a selectable 0 3 10 or 20 second delay before transfer of th
23. eature 5 4 N nameplate cover O operation electrical 1 5 manual 1 3 illustration of 1 3 warning 1 3 sequence of 2 1 optional accessories programmable engine exerciser amp source availability signal contacts 5 2 5 3 serial communication module 5 5 strip heater 5 5 P parts 3 1 problem 3 2 programmable engine exerciser 5 2 5 3 R rating label cover remote control features 5 4 bypass transfer time delay 5 4 inhibit transfer to emergency 5 4 remote test 5 4 remote transfer to emergency 5 4 replacement parts 3 1 S service call 800 800 2726 ASCO set engine exerciser 5 1 5 2 5 3 settings changing 4 1 factory 4 1 frequency 4 1 phase 4 1 time delay 4 1 voltage 4 1 source accepted lights 1 4 1 5 7 terminal block 1 2 test functional 1 3 1 4 1 5 time delay adjustment 4 1 gen set cooldown 4 1 how to change 4 2 override momentary outages 4 1 transfer to emergency 4 1 transfer to normal 4 1 timer plant exerciser how to set 5 1 5 2 5 3 transfer switch position lights 1 4 1 5 transfer test 1 5 3 1 trouble shooting 3 2 V voltage phase 4 1 voltage pickup and dropout settings 4 1 Copyright ASCO Power Technologies L P 2007
24. ess and hold Transfer Test button The load should transfer to emergency source when meter needle is near 0 volts If transfer does not occur Motor Load Transfer feature is not operating 4 Release the Transfer Test button The load should retransfer back to the normal source after the Retransfer to Normal Delay if used The retransfer should occur when the needle is near 0 volts If retransfer does not occur after the time delay the Motor Load Transfer feature is not operating 5 For immediate retransfer press the Bypass Time Delay button Then disconnect the voltmeter If the problem is isolated to circuits on the controller or the transfer switch call your local ASCO Power Technologies sales office representative or ASI In United States call 1 800 800 2726 or email customercare asco com In Canada call 1 888 234 2726 Furnish the Serial No Bill of Material BOM No amp Catalog No from transfer switch nameplate 3 2 Standard time delays are set to customer specifications if none specified standard factory settings are used SECTION 4 ADJUSTMENTS Time Delay Adjustment To change a setting follow procedure on page 4 2 Use Table 4 1 Time Delay Settings Table 4 1 as a guide to time delay values and their corre sponding adjustment DIP switch or potentiometer an ee ee E i 1 second Actuator 1 on Normal Soutoe Outages tee ree 3 seconds Actuator 1 off 8
25. ill always run on the week designated 1 on the date display Run Time Display The Run Time Display shows the run time for the engine exerciser The default setting from the factory is 30 minutes Time Display The Time Display shows the present system time The format is hours minutes seconds NOTE During total power outages power to the accessory is maintained by a battery in the Controller see page 4 2 Be sure that the 9 volt alkaline battery is fresh and enabled jumper in ON position so that the time and date settings are not lost Date Display The Date Display shows the present system date The format is day of week week month day of month year NOTE Week is either week 1 or week 2 This is used in conjunction with the bi weekly timer Daylight Savings Time Adjust Display This display shows whether the automatic daylight saving time adjustment is active The factory default is NO If enabled the unit will automatically adjust for daylight saving time at 2 AM on the first Sunday of April and the last Sunday of October Fast Slow Adjust Display This display shows the automatic fast slow adjustment value The factory default is 0 This feature can be used to trim a clock that runs fast or slow For example if your clock runs 10 seconds slow per week change the fast slow adjust value to 10 and the unit will automatically add 10 seconds to the clock every week NOTE Adjustments ar
26. ion meter to check phase rotation of emer gency source it must be the same as the normal source Shut down the engine genera tor if applicable The Emergen cy Source Accepted light should go off Then put the starting control selector switch on the generator set in the automatic position Close enclosure door Source Accepted Normal Emergency O Now continue to 3 Electrical Operation on next page INSTALLATION continued ASCO Power Transfer Switch EMERSON Network Power press this button ource Accepted Normal OV s Emergency Transfer Switch Position Normal O Emergency O Press for 15 Sec Transfer Bypass Test Time Delay Set Engine Exerciser e Press until light FLASHES Figure 1 6 Standard controls and indicators 3 Electrical Operation This procedure will check the electrical opertion of the Automatic Transfer Switch See Figure 1 6 Close the enclosure door first Transfer Test Both normal and emergency sources must be available and the emergency source generator if used must be capable of being started in this procedure Perform steps 1 through 8 at the right Observe the status lights Black circle means light is on O White circle means light is off NOTE If Motor Load Transfer feature is activated then transfer may not occur immediately after the respective time delays Transfer will
27. itch Make the neces a closed on normal sary auxiliary connections by refer LJ ring to Section 5 Control Features terminal block for engine start and auxiliary circuit connections Connections to Controller il N Optional COMMON TS Auxiiary Contacts Feature 14AA amp 14BA A 10 amps 32 V DC y 10 amps 250 V AC general purpose FEATURE 14B closed on emergenc FEATURE 14AA TT 1 E i I lo r r 1 1 I for other Control Features Figure 1 1 Engine start and auxiliary circuit located on bottom of Controller terminal block TB located on the transfer switch Load Disconnect Programmable Feature Engine Exerciser Remote Control Features Connections Connections connection refer to the Wiring Diagram amp see Wiring Diagram if provided page 5 4 for DIP switch settings amp refer to page 5 4 refer to Each control contact must be suitable for factory for DIP switch settings page 5 3 for a 5 V DC low energy circuit use only 10 11 12 13 14 15 16 RUUT LOAD OPTIONAL MOMENTARY MAINTAINED INHIBIT BYPASS DISCONNECT ENGINE TEST OPEN TO TRANSFER TRANSFER CONTACTS EXERCISER SWITCH TRANSFER TO TO TIME DELAY EMERGENCY EMERGENCY SF OUTPUT INPUT CONTACTS FOR CONTACTS 5VDC 5mA FACTORY 120VAC 5A USE 493192 Figure 1 2 Input output label on the Controller showing possible connections to the lower terminal block 1 2 INSTALLAT
28. line battery J5 battery B harness z plugs Tr A P1 a retransfer WE to normal time delay P2 transfer to emergency time delay S3 DIP switch S1 DIP switch 1 2se se 7a e OTRAS 6 S2 DIP switch Figure 4 2 Location of potentiometers clockwise to increase P1 or P2 potentiometer counterclockwise to decrease Figure 4 3 Changing time delay potentiometers DIP switches SW1 SW2 SW3 actuator 8 on each DIP switch off lt gt on Figure 4 4 Setting DIP switch actuators SECTION 5 CONTROL FEATURES ENGINE EXERCISERS These timers periodically exercise the emergency engine generator plant They can be set to exercise with or without load transfer or they can be completely disabled The engine generator should be exercised under load once a week fora minimum time period of 20 minutes or follow the recommendations of the engine generator set manufacturer Refer to page 4 2 for location of DIP switches battery provided and jumper block in the controller BUILT IN ENGINE EXERCISER DIP Switch Settings The engine exerciser included in ASCO Series 300 FUNCTION S1 DIP S2
29. n transfer switch rated voltage must be the same as normal and emergency line voltages Verify that the feeders have been connected to the proper lugs A DANGER Use extreme caution when using a meter to measure voltages in the following steps Do not touch power terminals shock burns or death could result Perform steps 1 through 6 at the right Observe the status lights See Figure 1 5 Black circle means light is on O White circle means light is off If necessary adjust voltage regulator on the generator according to the manufacturer s recommendations The Automatic Transfer Switch will respond only to the rated voltage specified on the Transfer Switch nameplate 2 observe these lights Close the normal source circuit breaker The Normal Transfer Switch Position and the Normal Source Accepted lights should come on Source Accepted Normal Emergency O Use an accurate voltmeter to check phase to phase and phase to neutral voltages pres ent at the transfer switch normal source terminals Close the emergency source circuit breaker Start generator if necessary The Emergency Source Accepted light should come on Source Accepted Normal Emergency Use an accurate voltmeter to check phase to phase and phase to neutral voltages pres ent at the transfer switch emer gency source terminals Use a phase rotat
30. oads If the normal source voltage falls below the present dropout point before the time delay expires the timing cycle is reset to zero If the emergency source fails for more than 4 seconds during the timing cycle ER relay drops out and the load is immediately retransferred to the normal source if that source is acceptable SE relay energizes and ER relay is dropped out The TS coil is energized the transfer switch operates and all switch contacts mains controls auxiliaries reverse position The transfer switch is now supplying the load from the normal source again Upon retransfer to the normal source NR relay begins its timing cycle unloaded running delay engine cooldown NR relay is provided with a 5 minute time delay on pickup to keep the engine running for a cool down period NR relay energizes after the time delay and signals the engine driven generator to shut down All circuits are reset for any future normal source failure Activation of standard control features shown in Section 5 will alter the sequence of operation and introduce additional time delays during transfer operations SECTION 3 TESTING amp SERVICE PREVENTIVE MAINTENANCE Reasonable care in preventive maintenance will insure high reliability and long life for the automatic transfer switch Operate the switch at least once a month Perform this four step Electrical Operation Test This is a test with load transfer ASCO Power
31. ont door and remove the four lag screws 2 in front 2 in rear securing enclosure to the wood skid Supporting Foundation The supporting foundation for the enclosure must be level and straight Refer to the applicable enclosure outline drawing included with the Series 300 for all mounting details including door opening space If bottom cable entry is used the foundation must be prepared so that the conduit stubs are located correctly Refer to the enclosure outline drawing for specified area and location Provide cable bending space and clearance to live metal parts When a concrete floor is poured use interlocking conduit spacer caps or a wood or metal template to maintain proper conduit alignment Mounting Refer to the applicable enclosure outline drawing fur nished with this switch and mount the Series 300 according to details and instructions shown on diagram Line Connections Refer to the Wiring Diagram provided with your Series 300 ATS All wiring must be made in accordance with the National Electrical Code and local codes It is unnecessary to remove pole covers from the transfer switch If you do remove them reinstall them carefully A DANGER De energize the conductors before making any line or auxiliary circuitry connections Be sure that Normal and Emergency line connections are in proper phase rotation Place engine gen erator starting control in the OFF position Make sure engine generator is not in operation
32. r contacts closed Emergency N 0 down lower contacts open UP closes the Normal source contacts lower DOWN closes the Emergency source contacts upper left side of transfer switch maintenance handle storage clips Figure 1 3 Maintenance handle amp storage location 3 Return the transfer switch to the Normal position Observe that the window indicators right side show the top shaft O open and the bottom shaft C closed Note If Normal and Emergency connections are reversed this operation is also reversed 4 Remove the maintenance handle and store it on the frame left side in the clips provided Verify that the maintenance handle has been removed before proceeding Now continue to 2 Voltage Checks on next page Emergency la 8 contacts a window indicators contact position O is open indicators right side C is closed Gl Normal _ Wl contacts roel Figure 1 4 Maintenance handle operation and contact position indicators 1 3 INSTALLATION continued ASCO Power Transfer Switch EMERSON Network Power Transfer Switch Position Source Accepted Normal O Emergency O Emergency Normal oO Transfer Bypass Test Time Delay Press for 15 Sec Set Engine fazazlo Press until light FLASHES Figure 1 5 St andard controls and indicators 2 Voltage Checks First check nameplate o
33. r must be closed Generator frequency must be at least 57 Hz 90 of nominal phase to phase voltage between transfer switch terminals EA and EC or EL1 and EL2 for 2 pole switches These are factory settings Transfer switch does not transfer the load to normal source when normal returns or when Transfer Test button is released Wait for Retransfer to Normal Delay 1 sec to 30 min to time out For immediate re transfer press Bypass Time Delay button If Motor Load Transfer is active wait for in phase condition see below Voltmeter should read at least 90 of nominal phase to phase voltage between transfer switch terminals NB and NC NC and NA and NA and NB or NL1 and NL2 for 2 pole switches Gen Set does not stop after load retransfer to the normal source Wait for the 5 minute Unloaded Running Delay to time out Starting control must be in automatic position Trouble Shooting the Motor Load Transfer Feature refer to page 5 4 A DANGER Use extreme caution when using a meter to measure voltages in the following steps Do not touch power terminals shock burns or death could result 1 Connect a voltmeter set for twice system phase to phase voltage between Transfer Switch terminals NA and EA 2 Manually start generator Voltmeter needle should sweep back and forth at a regular rate between 0 and about twice system voltage 3 Pr
34. rol features that are activated or furnished on the switch and review their operation Refer to Section 5 Control Features 1 Open normal and emergency source circuit breakers 2 Use the maintenance handle to manually operate transfer switch to the opposite source See page 1 3 Manual Operation Test 3 If the transfer switch is in the Emergency position manually start the engine generator and then close the emergency source circuit breaker Proceed with care The automatic transfer switch is energized Table 3 1 Trouble Shooting Checks PROBLEM CHECK IN NUMERICAL SEQUENCE 1 OPERATION 2 GEN SET 3 VOLTAGE Gen Set does not start when the Transfer Test button is pressed and held for 15 seconds or when the normal source fails Hold the Transfer Test button 15 sec or the outage must be long enough to allow for the 1 or 3 sec Momentary Normal Source Outage Delay plus engine cranking and starting time Starting control must be in automatic position Batteries must be charged and connected Check wiring to engine starting contacts Transfer switch does not transfer the load to emergency source after the gen set starts Wait for Transfer to Emergen cy Delay 0 to 5 min to time out For immediate transfer press the Bypass Time Delay button If Motor Load Transfer is active wait for inphase con dition see below Generator output circuit Voltmeter should read at least breake
35. s lower left mounting stud Because the controller is mounted on the enclosure door a conductive strap must be used between the enclosure and the door This connection provides proper grounding which does not rely upon the door hinges Harnesses The transfer switch is connected to the left side of the controller by a plug in harness two plugs INSTALLATION continued Engine Starting Contacts Customer connections for engine control contact and TS auxiliary contacts connections are located on terminal block TB which is mounted on the front lower left of the transfer switch Refer to wiring diagram provided with left side of the Series 300 ATS and connect the engine start wires to transfer switch the appropriate terminals See Figure 1 1 and Table A Table A Engine start connections COMMON Engine Starting Terminal When normal ba ers source fails oniransici switch Signals 5 amps 32 V DC 5 amps resistive 28 V DC or 120 V AC max FEATURE 7 closes to start FEATURE 8 opens to start L w b TB and TB2 TBT and TBS Auxiliary Circuits Feature 14A amp 14B FEATURE 14B 10 amps 32 V DC closed on emergenc 10 amps 250 V AC FEATURE 14A general purpose closed on normal S COMMON TS Auxiliary Contacts y Connect auxiliary circuit wires to appropriate terminals on transfer switch terminal block TB as shown on the wiring diagram provided with this Series 300 Automatic Transfer Sw
36. u Use the UP and DOWN arrow keys to move through the displays Fast Slow Adjust Daylight Saving Time Adjust Changing the Parameters Use the UP and DOWN arrow keys to move though the displays to the parameter to be changed Push the ENTER key to start the editing process The first parameter will flash Use the UP and DOWN arrow keys to adjust the parameter to the desired value and press the ENTER key to save the value The next parameter will now flash Repeat the process until each parameter is properly configured Start Time Engine Exerciser Display The Engine Exerciser Display shows the status of the engine exerciser When the unit is shipped from the factory the programmable engine exerciser is Disabled and must be set to Enabled by the customer When the engine exerciser is running this display will count down the remaining time until the end of the exercise period Start Time Display The Start Time Display shows the engine exerciser start time There are four parameters that determine the start time weekly Every or bi weekly Alt operation day of week Sun through Sat start hour 0 through 23 start minutes 0 through 59 Fill in your settings for future reference For example if the user wants the exerciser to run every other Saturday at 3 PM the proper configuration would be Alt Sat 15 00 NOTE When choosing bi weekly operation the exerciser w
37. w with its specific ASCO Series 300 ATS Use the ATS only elements explained The example is for a Series 300 within the limits shown on this nameplate ATS with switched neutral 3 pole 600 amp 480 V in a Type 1 enclosure H 300 B 3 600 N 1 C Neutral Phase Poles Amperes Voltage Controller Enclosure B switched 2 single 600 C 208 L 440 1 standard C type 1 C overlapping 3 three 800 D 220 M 460 1X if F type 3R blank solid 1000 E 230 N aso accessories G type 4 1200 F 240 P 550 pidered L type 12 H 380 Q 575 blank open type J 400 R 600 K available 600 1000 amp sizes only 415 Controller neutral connections power connections membrane controls Transfer Switch terminal block TB for engine start and switch position contacts power connections neutral connections L 600 amp size in typical enclosure with location of customer connections ASCO Series 300 Automatic Transfer Switches ATSs are Listed under Underwriters Laboratories UL 1008 Standard for Safety for Automatic Transfer Switches All control features are UL Component Recognized which assures that ASCO automatic transfer switches meet OSHA Safety Requirements and will be acceptable to electrical inspectors ASCO Series 300 Automatic Transfer Switches are suitable for emergency and standby system applications They meet emergency system rating requirements as defined in National Electrical Co
Download Pdf Manuals
Related Search