M362-4 and -9 UPS USER MANUAL
Contents
1. The Connectors P N shown above are of the M362 s connectors not the mating connectors The 115VAC 1 NEUT and the 115VAC 2 NEUT are the Neutrals of the AC outputs They are tight together and to Chassis GND in the M362 The GND Lines on J1 and J2 are Safety Ground In addition to tying these pins to the proper GND at the far side of the cables the M362 GND Point on the rear panel must be grounded to the Host Rack using 8 wire as short as practical or preferably a low inductance braid rated to 30Amp or higher For proper operation of the Battery Pack all Pins of J7 must be connected MIPS Doc M362 4 amp 9 USER_MANUAL RevB July 2014 Page 7 of 34 M362 Signal Connectors Designation and Pin Out Table 2 3 J3 Discrete Signals D Type 25 Female 1 7 BTL_MOD_CMD AWG 20 AWGHZO RMT_SW_RTN AWG 20 RMT_SW_RTN AWG 20 AWGHZO RS232_RTN AWG 20 RESERVED AWG 20 BTL_MOD_CMD_RTN RMT_SW_RTN RESERVED N 20 oao a Rza o AWG 20 AWG 20 AWG 20 AWG 20 AWG 20 AWG 20 AWG 20 AWG 20 3 w 3 O z a z o Rm pwr On sw awcszo 18 RMT_Ups evenss_sw_ E i p EE ooi C io ne 2 NC awcmo io nc awe 23 oeme sie Awa 20_ u oururokse awe o 24 serm _AwG 20_ a ne awonz0 25 tow eart_sig aweszo a3 onearrsie awomo J4 Remote ON OFF J5 RS 232 D Type 15 Female D Type 9 Female ejejejeje Pe BIWINTRIO pC AWG 20 AWG 20 AWG 20 WG 20 A2. High open indicates that the AC Input has recovered LOW_BATT Signal Low indicates that Battery Charge has dropped below 35 High open indicates that the Battery Charge is above 35 O_TEMP Signal Low indicates that the UPS temperature is critical and if remains high the UPS will shut down goes to By pass in three 3 minutes High open indicates no Over Temperature condition 7 1 2 Input Signal The BTL_MOD_CMbD Signal is an Opto Isolated command It is intended to be activated by a 5Vdc signal via a 3300 resistor When High active it overrides the Over Temperature protection of the M362 In Battle Mode the O_TEMP discrete signal and the front panel Over Temperature LED 24 will continue to indicate Over Temperature condition but the M362 will not turn off and will continue to operate until if fails or shut down by the user When in Battle Mode and in Over Temperature the M362 will automatically disable its Battery Charger in order to maximize its ability to remain operational until the temperature will drop to a safe level The logic levels are High active I gt 2 5mA 3 5Vdc Low open V lt 0 5Vdc or lt 0 05mA Vmax 11Vdc unless externally limited to 20mA Caution BTL_MOD should not be asserted unless absolutely necessary Over temperature damage is not covered by the unit s Warranty 7 2 Remote Control Switches The M362 can be controlled by remotely located switches using the Remote Control Int
3. and bushings on the rear of the unit MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 3 of 34 1 General Description 1 1 Intended Applications The M362 is a high quality rugged 2 5KW 3KVA 19 rack mounted Uninterruptible Power Supply UPS that uses external Power Pack s and able to provide very long holdup times The M362 fully complies with all the requirements of MIL STD 1399 300B and is specifically designed to meet harsh military shipboard environment The high reliability and ruggedness of the M362 make it an excellent choice not only for military shipboard applications but for critical shore based applications as well 1 2 Overview 1 2 1 AC Input and AC Outputs The M362 4 is fed from a single phase 115VAC 60 source can be configured by the user to 230VAC 50 60Hz by using the Input Voltage Range Selector on the top cover of the M362 The M362 9 is fed from a 440VAC 60Hz source Both the 4 and the 9 provide two uninterrupted 115VAC 60Hz low distortions sine wave outputs One output AC 1 is rated to the full UPS rating 3KVA and the other AC 2 is rated at 1 1KVA 10Arms Total output power is limited to 2 5KW 3KVA The two outputs are fed from the same internal source a common DC AC Inverter and share a common Neutral line isolated from AC Input AC 2 is intended to feed non essential loads and in case of an AC Input failure that lasts for more than 14 seconds the M362 automatically disconnects AC 2 and
4. Switches RS 232 Serial Interface Theory of Operation Power Conditioner UPS Section Specifications MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page oO ON DO BP PHP BW WNNNNNNNNN NN PRP PRP RP RP RP PP PP PP PB N 0 O WON THDU UN WNNP OWN VU BWNN DN FP OO Page 2 of 34 IMPORTANT SAFETY INSTRUCTIONS gt The M362 UPS and the M333 4 Battery Pack should not be tampered with by unauthorized personnel Tampering with these units or using any of them in any other way but the intended application may result in a safety hazard gt The M362 should be used only with Milpower s M333 4 Battery Pack s Connecting the M362 to any other battery may damage the M362 and may result in a safety hazard gt Disconnecting the input connector does not turn off the UPS gt The M362 should only be plugged into an approved double pole circuit breaker C B or a fused electrical outlet rated for 32 to 42Amp for M362 4 and 10 to 15Amp for M362 9 gt When the M333 4 is energized high voltage may appear on the pins of connector J2 on the back panel of the M333 4 Verify that connector J2 on the M333 4 is never left open If J2 is unused seal it with its Connector Cup gt For proper mechanical support in installation that should withstand high impact shocks or vibration Use at least three bolts on each side of the front panel Do not rely on the slides for mechanical support Use the two pins supplied with the unit
5. a short beep will sound to indicate compliance Due to the On line topology of the M362 the output voltage is always generated by the DC to AC Inverter regardless of the prime power source Hence the transition from AC Input to Battery Power and backward is seamless When the UPS operates on Battery power the Batt Charge Bar Graph 29 displays the remaining battery charge level When the charge in the battery drops below 35 the Yellow Low Batt Warning LED 22 will start blinking the Low_Batt discrete signal will go Low and the audible alarm will start emitting two short beeps once every five seconds warning the user that the battery charge level is low When the Battery Charge Bar Graph reaches 0 no segments are lit the UPS will continue to operate until the actual voltage of the battery trips the Over Discharge protection circuit and shuts down the UPS When the AC Input voltage recovers the UPS will turn on automatically 5 8 UPS Response to Overload Condition The M362 has two distinct overload protection circuits An active current limiting of the output current that clamps the output current when its peaks reaches 40Amp 28Arms and an overload protection that shuts down the UPS Output if the output power in Watts exceeds 2 5KW In case of a shutdown due to an overload the Green Output OK LED 17 will turn off the Red Output Fail LED 19 will turn on the Red Over Load Shutdown LED 23 will turn on and the Output_OK di
6. b Push briefly oh the Battery Test Push button 27 The Green Pass LED 26 will blink rapidly for 2 seconds If the Battery and its connections are all good the Green Pass LED 28 will turn on for 20 seconds If the Battery or the connections are bad the Red Fail LED 26 will turn on and after 10 seconds will start blinking indicating a failed battery If both LEDs remain off it means that the test was denied most probably due to insufficient loading below 200W or Battery Charge level lower than 50 or no AC Input 6 2 Air Filters Maintenance The Air Filters 2 and 7 on the M362 Air inlets should be monitored periodically for cleanness Dust and dirt accumulation can interfere with the cooling air flow and may result in over temperature condition In typical Below deck the filters will need inspection and service every 3 MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 23 of 34 months In dustier area or if the Battery Pack is located close to the floor more frequent services will be required If unknown start by inspecting the filters once a month and continue as required To clean the filters a Open the Filters Covers 2 and 7 by opening the captive screws that hold them in place b Remove the Air Filters c Wash the Filters in warm water and detergent d Using pressurized air remove water residue and dry the filters e Reinstall the Filters back in place and tighten the captive screws
7. circuit conditions that pull the output voltage below 7OVAC the output will shut down within 0 7 seconds 5 8 3 Recovery From an Overload Shutdown To recover from a shutdown caused by an Overload condition indicated by the Red Over Load Shutdown LED 23 1 Turn off the Power On Off switch 4 or the Remote PWR On Off switch 2 Remove the overload or short circuit from the M362 output 3 Turnonthe Power On Off switch 4 or the Remote PWR On Off switch as applicable since both must be On in order to enable the M362 Note The output may turn on immediately or after a short delay depending on the duration the unit was off During this delay the Output Standby Yellow LED 14 will blink MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 19 of 34 200 25kS s A Ch2 350m WOAH VCCUANV CURA EATA ETANTE f NO Output Current 25Amp Div Hoo E E F Pee E E TE E A Dg E E A E E T T E LE E E E A E E EN Chi 1004 100ms Ch2 250mY 100ms 700mS Figure 6 Output Short Circuit Shutdown Figure 7 Output Short Circuit Current Waveform MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 20 of 34 3 111s 3 115s _ 321 OrmHz Vout 100V Div Aid i i j i i iY j R 5 Sec Delay Figure 8 Overload 2 9KW Shutdown 5 9 UPS Response to Over Temperature Condition When the internal hotspot temperature of the UPS exceeds a threshold level a
8. remains energized Input On Off Switch 5 When On connects the AC Input to the UPS When Off disconnects the AC input from the UPS If the UPS is Already On it continued to operate on battery power Test Mode Output On Off Switch 6 When On enables the AC Output of the UPS When Off drives the M362 to Standby Mode AC Output is Off but battery charger and all other functions remain functional MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 12 of 34 Remote On Off J4 8 5 When shorted enables the M362 When open remove power from all circuits regardless of any other switch or signal Note the primary of the Isolation Transformer of the Power Conditioner is not affected and remains energized Remote UPS By pass J4 6 4 When shorted enables the UPS When open disables the UPS and drives the M362 to By pass mode 5 3 Operation Modes The M362 has five 5 operational modes as described below 5 3 1 Off All relays are open The Battery Pack switch is off 5 3 2 UPS Mode Normal UPS operation 5 3 3 Standby Mode AC output is off The front panel display charger and communication remain functional 5 3 4 Test Mode AC Input relay is open and the M362 operates on battery power All functions except for charger remain functional Tests the UPS function 5 3 5 By pass Mode The AC output is connected directly to the Power Conditioner No UPS function no charging no communication and no d
9. reserves the battery power for AC 1 1 2 2 Isolation between AC Input to AC Outputs The AC outputs of the M362 are completely isolated and independent of any fluctuations and disturbances on the AC Input The same is true in the opposite direction in UPS Mode the M362 isolates the Primary source shipboard power from disturbances and EMI interferences generated by the AC loads Incase of an interruption on the AC Input the transition from AC Power to Battery power and backward when the AC Input recovers is seamless and the AC outputs remain undisturbed The UPS section of the M362 provides failure isolation between the loads on its output to the Prime source Shipboard Power Overloading or even applying a full short the M362 outputs will not result in overloading of the Shipboard Power For safety reasons the Neutral of the AC Outputs is shorted to Chassis Ground internal to the M362 If the application dictates that the grounding point of the Neutral should be external to the source the M362 this Ground Connection can be removed by the user Note The grounding of the AC Output is essential and does not violate MIL STD 1399 300B that applies only to shipboard power that is galvanically isolated from the AC Output of the M362 and is not affected by the grounding MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 4 of 34 1 2 3 Battery The M362 does not have an internal battery and relies on external Battery Pack s Milpow
10. the Safe to Remove Push button 27 until both the Green Pass LED 28 and the Red Fail LED 26 starts blinking together if they are not already blinking you will have to hold the push button down continuously for about 5 seconds b Connect the cable from J1 on the M333 4 Battery Pack to J7 on the M362 c If the M362 was off during the procedure turn it on turn on the Input On Off switch and then the Power On Off switch and go to step 6 below If the M362 was On during the procedure the Battery Green Pass LED 28 and Red Fail LED 26 should both still blink Push briefly on the Safe to Remove push button 27 and verify that both LEDs 26 and 28 had turned off d Verify that the Green LED on the Battery Pack front panel is on and that one of the Battery Charge bars 29 is blinking If more than one bar on the Charge Level indicator on the M362 front panel is lit push and hold the Alarm Off push button 21 for five seconds until the Charge Level indicator 29 is reset to zero and only the lowest bar blinks This will erase the old battery data and starts a new fast charge cycle 6 1 3 Test the New Battery Pack When the Battery Charge indicator 29 indicates that the Battery Charge level is 50 or higher may take between a few minutes to a few hours depending on the charge level of the new Battery perform a Fast Battery Test a Verify that the AC Input is OK and the Load on the M362 is at least SOOW 25
11. using a torque of 6 0 6 Lb Inch MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 24 of 34 7 Communication and Remote Control 7 1 Discrete Signals Interface The M362 provides on its J3 Discrete Signals connector four 4 discrete two state Output signals that indicate the operational status of the M362 and one 1 discrete Input signal that when asserted drives the M362 into Battle Mode The electrical interface is shown on Figure 9 below The signals are active and valid only when the M362 is operating and not in a By pass Mode OUTPUT_OK J3 Pin 11 ON_BATT M362 LOW_BATT Control Circuits SIG_RTN J3 Pin 24 an BTL_MOD_CMD J3 Pin 1 BTL_MOD_CMD_RTN J3 Pin 14 0 01uF T Figure 9 Discrete Signals Interface 7 1 1 Output Signals All the Output signals are Opto isolated Open collector type logic referred to a common SIG_RTN Pin 24 of J3 isolated from any other signal or ground floating The signals are designed for interface with a circuit user s side composed of a pull up of 2 7KQ to 3 3 5Vcc The logic levels are Active Low V lt 0 5V 2mA Open High 1 lt 0 1mA 5Vdc Vmax 15Vdc Imax 10mA MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 25 of 34 OUTPUT_OK Signal Low indicates a regulated good AC Output High open indicates no or bad AC Output ON_BATT Signal Low indicates that the UPS operates on Battery power AC Input failure
12. 7 18 19 20 21 22 23 24 25 26 27 28 29 Load Level Bar Graph marked in 100 2 5KW Output Stand by LED Yellow Input Fail LED Red Input OK LED Green Output OK LED Green By Pass LED Yellow Output Fail LED Red On Batt Warning LED blinking Yellow Alarm Off Push button Used also to Reset Batt Charge Level Low Batt Warning LED blinking Yellow Overload Shutdown LED Red Over Temperature blinking Red Battle Mode LED White Batt Test Fail LED Red Batt Test Safe to Remove Push button Batt Test Pass LED Green Batt Charge Bar Graph marked in 100 Full Charge INPUT OUTPUT Figure 3 Indicator and Controls View MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page 10 of 34 4 Rear Panel Description Figure 4 30 Left Side Bushing mating pins are supplied with the unit 31 J1 Input Power Connector see Table 2 1 for type and pin out 32 J2 Output Power Connector see Table 2 2 for type and pin out 33 J7 Battery Connector see Table 2 7 for type and pin out 34 Cooling fan air outlet 35 J3 Signals Connector see Table 2 3 for type and pin out 36 J4 Remote Switches Connector see Table 2 4 for type and pin out 37 J5 RS 232 Connector see Table 2 5 for type and pin out 38 Right side Bushing mating pins are supplied with the unit 39 GND Connection threaded hole 10 32 UNF 32 40 min deep Figur
13. Battery lines from the M362 Under normal operating conditions the relay is closed and the flow of current is controlled by the fast Electronic Switch When the AC Input is available the Electronic Switch blocks the Battery from discharging but allows it charging When the AC Input is not able to support the 270VDC BUS the Electronic Switch closes and allows the LDC to draw power from the Battery MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 30 of 34 8 2 5 Battery Charger Controller The M362 contains a sophisticated Battery Charger Controller that senses the Battery Pack type and the number of Packs connected to it and modified its charging protection and monitor parameters accordingly The Charger Controller is rated at 400W and uses a Cyclic Float Charge procedure that ensures fast re charge and long battery life Initially the batteries are charged by a Constant Current source typically 2Amp if one Pack is connected to it and 3Amp if more than one Pack is used until the Battery s voltage reaches the Charge set level This level is temperature dependent and the Charger Controller continuously adjusts it in accordance with the Battery Pack temperature If more than one Pack is connected the Charger will use the temperature of the Pack directly connected to J7 Once the Charge set level is reached the charge current will gradually drop until it reaches the Full charge threshold that depends upon the number of Packs connecte
14. Milpower Source M362 4 and 9 UNINTERRUPTIBLE POWER SUPPLY SINGLE PHASE 2 5KW 3KVA Used with M333 4 External Battery Pack s MADE IN THE U S A USER S Milpower Source 7 Field Lane Belmont NH 03220 Phone 603 267 7355 www milpower com E mail sales mps com MPS Doc M362 4 amp 9 USER_MANUAL Rev B MANUAL Milpower Source West Coast Sales Office Dave Hall 1498 Linda Vista Ave Pasadena CA 91103 Phone 626 304 9620 Fax 626 796 1415 E mail dmhall pacbell net July 2014 Page 1 of 34 Table of Contents Para 1 1 1 2 3 1 3 2 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 6 1 6 2 7 1 7 2 7 3 8 1 8 2 Description Important Safety Instructions General Description Intended Application Overview Electrical Installation Instructions Power Connectors and Pin Out Signal Connectors and Pin Out Front Panel Description Front panel Main Components Front Panel Indicators and Controls Rear Panel Description Operating the M362 Quick Start turning the M362 On and OFF Front Panel and Remote Switches Description Operating Modes Automatic Transfer to By pass Mode Visual Indicators and Push buttons Battery Tests UPS Response to Input AC Failure UPS Response to Overload Condition UPS Response to Over Temperature Condition Maintaining the M362 Replacing the Battery Pack Air Filters Maintenance Communication and Remote Control Discrete Signals Interface Remote Control
15. S Section The Block Diagram of the UPS Section of the M362 is shown in Figure 11 below 115VAC ACI t Low oe Output from PWR Distortion DC AC Conditioner AC DC Inverter Converter 270VDC BUS To From Capacitors all Circuits Bank To all Circuits To Front Panel From To Monitor Display Battery Pack amp NN Control Charger Controller Y Signals Connectors Battery Pack s Sense Figure 11 Functional Block Diagram UPS Section MIPS Doc M362 4 amp 9 USER_MANUAL RevB July 2014 Page 29 of 34 8 2 1 Low Distortion AC DC Converter LDC AC Input Power from the output of the Power Conditioner via the Input relay enters the UPS section via an EMI Filter The Low Distortion AC DC Converter LDC converts the AC Input to 270VDC The LDC controls the AC input current that it draws from the AC Input such that it follows a clean sine wave form in sync with the AC Input voltage This characteristic allows the M362 to meet the stringent Current Harmonics limit of MIL STD 1399 300B In addition to the AC Input the LDC has a DC Input for the Battery power The LDC can process power from both sources simultaneously so when the external AC Source Ship power brown out or recovers in un orderly manner there is an overlap when power is taken from both sources and the transition is seamless The LDC contains an Inrush Current Limiter on its input that limits the inrush current into the UPS in compliance w
16. WG 20 WG 20 AWG 20 gt WG 20 WG 20 gt AWG 20 AWG 20 AWG 20 AWG 20 AWG 20 N C AWG 20 c RS232_TXD A T A RS232_RXD__ A RESERVED _ A c A WG 20 WG 20 WG 20 WG 20 WG 20 WG 20 WG 20 WG 20 WG 20 The Connectors P N shown above are of the M362 s connectors not the mating connectors If Remote Switches are not used short pins 8 of J4 to pin 5 and pins 6 of J4 to pin 4 When interfacing with J5 use straight 9 pins RS232 cable Signals of the same name that appear in several connectors are the same signal provided in more than one connector in order to facilitate convenient cabling Do not use more than one instance of each signal MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 8 of 34 3 Front Panel Description Note Except for the Dash number and description the front and rear panels of the M362 3 4 and 9 are identical Figures 2 3 and 4 are of the M362 3 3 1 Front Panel Main Components Figure 2 Left Handle Small Air filter Cover Visual Indicators and Controls for detailed view see Figure 4 Power On Off Switch Input On Off switch Output On Off switch Large Air filter Cover Right Handle a De Nr fi E E WHE WE Figure 2 Front Panel View MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page 9 of 34 3 2 Front Panel Indicators and Controls Figure 3 13 14 15 16 1
17. ass Mode the M362 will remain latched in it To exist By pass Mode the Power On Off switch or the Remote PWR On Off switch must be toggled Off and then back On or AC input power removed and then re applied 5 4 1 Manual Transfer to By pass The M362 can be manually driven to By pass mode by turning Off the Front Panel Input and Output switches when the Power On Off switch is On or by toggling the Remote UPS By pass to By pass when the Remote switches are used 5 4 2 Automatics Transfer to By pass In case of a UPS failure the M362 will automatically transfer to By pass mode within 3 seconds The automatic transfer will occur only if all of the following conditions are met 1 Both the PWR On Off Switch and the Remote On Off switch are On or if Remote switches are not used pins 5 and 8 of J4 are connected 2 AC Input voltage is available 3 AC Output is lost for more than 1 second 4 The cause of the low AC Output is not an Overload condition or user command MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 14 of 34 5 5 During the first 5 seconds after turn on the automatic By pass is disabled allowing the M362 to turn on normally into UPS Mode An Overtemp failure of the UPS will drive the M362 to By pass Mode Visual Indicators and Push buttons 5 5 1 Input Fail OK LEDs 15 and 16 Indicate the status of the AC Input into the UPS If the AC Input is normal the Green OK LED 16 will be on If AC Inp
18. between the Shipboard Delta power to the Grounded Neutral Output power By still having the Power Conditioner in line the M362 maintains a considerable amount of RF Isolation EMI and Spikes protection even in By pass Mode The M362 is a Double conversion On line UPS the AC Input is first converted to DC and then inverted to AC It means that AC Output is always synthesized from a regulated DC Bus and is not related in frequency or voltage to the AC Input It also means that the transition from AC Input to Battery power and backward is seamless with zero delay 8 1 Power Conditioner The main elements of the Power Conditioner of the M362 are shown in Figure 10 below Isolation XFMR 275VAC 140 Assembly MOV I 175VAC 55J From Input AC Input RFI 115 230VAC Connector Filter Selector 115VAC to UPS Section 24VDC 24VDC Rectifier to Relays Filter Control igure 10 Power Conditioner Diagram MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 28 of 34 The 115 230VAC Selector is accessible from the top side of the M362 without removing the top cover and can be used to configure that AC Input of the M362 to 230VAC The M362 will accept both 50 and 60Hz on its input regardless of the setting of the 115 230VAC Selector In addition to the conditioned 115VAC output to the UPS Section the Power conditioner provides low power 24VDC that energizes the By pass Relay when the UPS Section is disconnected 8 2 UP
19. bout 95 C the Red Over Temperature LED 24 will start blinking an audible alarm will beep once a second and the O_Temp discrete signal will go Low active If the temperature remains above this threshold for more than three 3 minutes the UPS will shut itself off and about two seconds later the M362 will automatically go into By pass mode In order to recover from Over Temperature Shutdown turn off the Power On Off switch remove and check the condition of the Air Filters 2 and 7 on the front panel if dirty clean it Let the UPS cool down under most conditions 15 minutes should suffice and turn the Power On Off switch 4 back on Verify that the cooling fan 34 on the rear panel of the M362 is operating MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page 21 of 34 6 Maintaining the M362 In case the M362 needs maintenance beyond the periodic maintenance described below call the Milpower Source NH Plant or the West Coast Sales Office for help see contact information on the Cover sheet of this document The required periodic maintenance of the M362 is composed of two tasks replacing an old Battery Pack and cleaning the front panel Air filters 6 1 Replacing the Battery Pack The M362 uses a Hot swappable External Battery Pack MPS P N M333 4 Do not use any other battery with the M362 In a typical Below deck application the M333 4 will need to be replaced every 5 years The Battery Replacement procedure is compose
20. d of three steps disconnecting the old battery Pack connecting the new Battery Pack and lastly performing a Fast Battery Test 6 1 1 Disconnect the Battery Pack s from the UPS a If turning off the UPS is acceptable turn off the Power On Off switch 4 on the M362 front panel and go directly to Step 2 below If the System fed by the M362 must remains energized you do not have to turn off the M362 Instead push and hold the Safe to Remove Push button 27 until both the Green Pass LED 28 and the Red Fail LED 26 starts blinking together you will have to hold it down continuously for about 5 seconds b Verify that the Green LED on the Battery Pack M333 4 has turned off and only then disconnect the cable between J7 on the M362 to J1 on the M333 4 Battery Pack Caution If the Green LED on the front panel of the Battery Pack is lit it means that the Battery switch has failed to open and high voltage may be presented on the Battery connector In this case turn off the Power On Off switch of the M362 and use extra caution when disconnecting the Battery Pack 6 1 2 Reconnect a New Battery Pack a If turning off the UPS is acceptable turn off the Power On Off switch 4 on the M362 front panel and go directly to Step 4 below MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 22 of 34 If the System fed by the M362 must remain energized you do not have to turn off the M362 Instead push and hold
21. d to the M362 Once the Full charge current threshold is reached the Charger Controller will reduce the voltage to Float level temperature dependent and declares the Battery as Fully charged The Charger Controller continuously monitors the Battery voltage and current both charge and discharge Using this data it calculates the Effective State of Charge of the Battery Unlike other types of batteries like Ni Cad or Li lon the available charge of a VRLA batteries is strongly depends upon the discharge rate The Charger Controller recalculates the Effective State of Charge once a second based on the previous State and the actual battery s current The Charge Level presented on the Front Panel of the M362 is an estimation of the remaining Effective Charge in percents assuming that the AC Load on the M362 will remain constant The Charger Controller uses the monitored battery data for protection functions Over voltage Over discharge etc and to sense battery s and or charger s failures 8 2 6 Auxiliary Supply and Cooling Fan The Auxiliary Supply is fed from the 270VDC BUS and provides low power voltage 12VDC 5Vdc etc to the other circuits of the M362 except the Cooling fan The M362 uses a variable speed DC Fan The Fan is supplied by a dedicated Power Supply not shown on Figure 11 fed from the 270VDC BUS and controls the RPM of the Fan in accordance with the M362 internal temperature Most of the time the Fan RPM will be muc
22. e 4 Rear Panel View MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 11 of 34 5 Operating the M362 5 1 Quick Start Turning the M362 On and Off The M362 will not turn on with Battery power only Therefore to turn on the M362 AC Input must be presented at the Input connector J1 When Remote switches are not used The Input On Off switch 5 and Output On Off switch 6 should be in the Up On position Toggling the Power On Off switch 4 Up turns On the M362 and Down turns it Off Note When the remote switches are not used Pins 5 and 8 of J4 the Remote SW connector should be connected to each other The M362 is shipped with a mating connector and jumpers already installed on J4 When the Remote switches are used All the switches on the front panel of the M362 should be in the upper On position Toggling On the Remote On Off switch close position turns On the M362 and Off open position turns Off the M362 5 2 Front Panel and Remote Switches Description The M362 has three toggle switches Power On Off Input On Off and Output On Off on its front panel It has inputs for two remote switches Remote On Off and Remote UPS By pass on connectors J4 and J3 PWR On Off Switch 4 When On the M362 is enabled When Off power is removed from all UPS circuits regardless of any other switch or signal Note the primary of the Isolation Transformer of the Power Conditioner is not affected and
23. en briefly depressed initiates a Battery Test When depressed for 5 Sec disconnects the Battery and allows Battery Hot Swapping Another brief depress will reconnect the Battery Battle Mode An Opto isolated input l gt 2 3MA 3 5Vdc will drive the UPS into Battle Mode Controls Disabling the Overtemp protection 1 lt 0 05mA V lt 0 5Vdc disables the Battle Input Mode Vmax 11Vdc unless externally limited to 20mA Uses External Battery Pack Model M333 4 Up to four 4 Packs can be Type connected in a daisy chain configuration The M362 automatically identifies the Battery s configuration Supports Hot swapping of Batteries Depends upon the number of M333 4 Packs that are connected to the Battery M362 For loads between 1KW to 2 4KW the Hold up time can be Holdup estimated using the following formula ae Ti Holdup Time minutes 26 5 x N KW ime Were N is the number of Packs btween 1 to 4 and KW is the load in KW Below 25 C derate by 1 25 for every 1 C below 25 C Can be controlled by two remotely located switches RMT Power On Off Switch When Open shuts down the M362 Opens 2 poles Remote relays that disconnect the AC Input AC Output and the Battery Pack Switches RMT Bypass UPS Switch When Open disconnects the UPS section from AC Input and Outputs and enable the By Pass relay The remote control switches not supplied should be rated to 0 5Amp 30Vdc OUTPUT_OK Signal Low indicates a regulated go
24. er s M333 4 Up to four Battery Packs can be connected to the M362 The M362 automatically identifies the type and the number of Battery Packs that are connected to it and adjusts its internal parameters accordingly 1 2 4 By Pass Figure 1 below shows the main building blocks of the M362 When the M362 operates in UPS Normal mode the Input and Output relays are closed and the By pass relay is open When the M362 goes to By pass mode the Input and Output relays open disconnecting all of the active circuits of the M362 and the By pass relay closes connecting the AC Outputs directly to the output of the passive Power Conditioner In the By pass mode the load current is limited by the external user provided circuit breaker on the AC outlet that feeds the M362 Note The Power Conditioner contains internal fuses on its input lines AC In 1 and AC In 2 on Figure 1 below These internal fuses are intended only as an additional safety feature and should not be considered or used as the main overload protection devices During normal UPS mode operation the current through these fuses is much lower than the 60Amp for 4 rating of the fuses 20Amp for 9 regardless of the load on the M362 output In the unlikely event that these fuses open it may indicate the existence of an internal safety hazard and the M362 should be returned to the manufacturer for inspection service These internal fuses should never be replaced without through testi
25. erface on J3 and J4 of the M362 The M632 3 can be interfaced with two remote switches a RMT_PWR_ON Switch and RMT_UPS BYPASS Switch The required switches are standard On Off toggle switches rated to 30Vdc 1Amp RMT_PWR_ON Switch Should be connected between pins 8 and 5 of J4 When Off open unconditionally shuts down the M362 and the M333 4 Battery Pack s connected to it If not in use pins 8 and 5 of J4 must be permanently shorted together RMT_UPS BYPASS Switch Should be connected between pins 6 and 4 of J4 When Off open MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 26 of 34 drives the UPS to By pass Mode If not in use pins 6 and 4 must be permanently shorted together To control the M362 by the Remote Control Switches leave all the switches on the front panel of the M362 in the On upper position Turn the M362 On and Off by the RMT_PWR_ON Switch change between UPS to By pass Modes using the RMT_UPS BYPASS Switch For more details on the M362 modes of operation and control switches see Paragraph 5 3 For user convenience the Remote Switches interface is available also on J3 see Table 2 3 7 3 RS 232 Serial Interface The RS 232 serial communication interface is available through connectors J5 a D Type 9S connector and on J3 located on the back panel of the UPS Please note that the RS 232 signals appearing on J3 are connected in parallel to the RS232 signals on J5 so only one of them should be used I
26. f you are interfacing with J5 leave the RS232 on J3 unconnected The RS 232 interface allows control and monitoring of the UPS by a host computer through the serial RS 232 communication link For further information about this feature refer to the M362 Software Interface Manual available at www milpower com The Table below shows the RS 232 pin assignment On the I O column Input and Output entries designate input and output pins of the UPS Connector J5 D Type 9S RS 232 Pin Assignment Pin 1 0 Symbol Description 1 NA NA Not Used 2 Output TXD UPS Transmitted Data 3 Input RXD UPS Received Data 4 NA NA Not Used 5 SIG GND RS232 Signal Ground 6 NA NA Not Used 7 NA NA Not Used 8 NA NA Not Used 9 NA NA Not Used J5 will interface to the host computer using standard straight cable The RS232 main characteristics are 1200 Baud 7 Data bits 1 Stop bit Even Parity Full duplex A complete description of the RS232 interface and protocol appears in the M362 Software Manual MPS Doc M362_Soft_MANUAL MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page 27 of 34 8 M362 Theory of Operation The M362 is composed of two main building blocks see Figure 1 on Page 5 a Power Conditioner and a UPS section In case of a hardware failure this configuration allows the M362 to continue to support the load in By pass Mode without disrupting the galvanic isolation
27. g 40 to 70 C p Operating 40 to 55 C 40 to 52 C for the 9 Thermal Shocks 40 C t0 70 C Per MIL STD 202 Method 107 Cond A 20 C min Humidity Up to 95 Per MIL STD 810F Method 507 4 DC Magneti 2 ag GEG 1600Amp m 20 oersteds Per MIL STD 1399 Section 70 Field Acoustic Noise Less than65dBA at one meter See DWG M362004 Size and Weight 19 Rack Mount 3U High less than 90 pounds MPS Doc M362 4 amp 9_USER_MANUAL RevB July 2014 Page 34 of 34
28. h lower than the rated maximum and only at elevated temperature and high load condition it will rise as needed This strategy increases the life expectancy of the Fan by operating it at low electrical and mechanical stresses MIPS Doc M362 4 amp 9 USER_MANUAL RevB July 2014 Page 31 of 34 9 Specification Voltage Single phase 115VAC 60Hz 440VAC for 9 Range Fully complies with MIL STD 1399 300A Type I Switchover he Below 102VAC 390VAC for 9 the M362 may switch to Battery power Voltage AC Input 48 64 Hz Full compliance with MIL STD 1399 300A gt 97 at full rated load Spikes 200 joules clamping devices Withstand 1 000V 50uS Spike 2 500V for 9 A W p MIL STD 1399 Navy Section 300B Input is galvanically isolated from output and chassis gt 1 MOhm at 600VDC Isolation AC Input is isolated from AC Output including By pass Mode by an internal 130dB Isolation Transformer Total capacitance between input and chassis is less than 0 02uf per line Leakage current is less than 2ma Fully complies with MIL STD 1399 Navy Section 300B Current Ieee Sinusoidal with harmonic content of less than 2 5 I A W MIL STD 1399 waveform Input Current input Current is actively limited by the UPS to 30Arms 8Amp for 9 including Limit during Overload condition Two Outputs AC1 and AC2 sharing a common Neutral AC 2 is intended for Output non essential loads and in case of a prolong failure of the AC Input the u
29. ions to the M362 or in the battery power processing circuits of the M362 This test should be initiated every time a replacement Battery Pack M333 4 is connected to the M362 The M362 will perform the Fast Battery Test only if all of the following conditions are met 1 AC Input is available 2 Battery Charge Level is 50 or higher 3 The load on the M362 AC Output is at least 200W MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 17 of 34 5 6 2 Full Battery Test The Full Test fully verifies the capability of the Battery Pack s to provide the required hold up time in case of an AC failure This test may take a long time depends upon the require hold up time and in case of a failure a loss of AC Output To perform the Full Battery Test simply turn Off the Input On Off switch 5 on the UPS front panel and measure the time until turn off or until the required hold up time was reached 5 7 UPS Response to Input AC Failure When the input AC voltage is below the minimum level required for proper operation the M362 will use the Battery to support the AC Output During this condition the Red Input Fail LED 15 turns on the Yellow On Batt Warning LED 20 blinks the ON_BATT discrete signal will go Low Five seconds after the input power has been lost an audible alarm will start beeping once every five seconds To turn off the audible alarm press momentarily on the Alarm Off Push button 21 When the button is depressed
30. isplay except for the By pass LED Allows a degraded performance operation during a UPS hardware failure Once entering By pass Mode the M362 will remain latched in it To exist By pass Mode the Power On Off switch or the Remote PWR On Off switch must be toggled Off and then back On or AC input power removed and then re applied See also Paragraph 5 4 The Truth Table on the next page specifies the Operation Mode for each setting of the Switches In the table below denotes Don t care The symbol gt denotes a change of state that occurs when all of the other switches are already in the specified states MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 13 of 34 Table 5 1 PWR Remote Remote Input Output On Off Power UPS On Off On Off M362 Operation Mode Switch On Off Bypass Switch Switch OFF gt ON ON 5362 will turn On into Open gt Close ON UPS Normal Mode The M362 is Off All relays are open M362 will enter Test Mode Operating on Battery Power on core open Pow coe 9 Latched in By pass Mode 5 4 Automatic Manual Transfer to By pass Mode When in this mode the Input and Output relays are open isolating the failed UPS circuits and the By pass relay is close connecting the output of the Power Conditioner directly to the AC Output Connector see Figure 1 on Page 5 Charger communication and display functions except for the By pass LED are all disabled Once entering the By p
31. ith MIL STD 1399 300B 8 2 2 Capacitors Bank and 270VDC BUS The 270VDC BUS is used as the internal power source for the UPS It is generated by the LDC using power from the AC Input or if not available it uses Battery power A small Capacitor Bank 3 500uF on the 270VDC BUS helps to buffer the AC Input Shipboard power from fast power fluctuations that may appear on the AC loads connected to the AC Outputs of the M362 8 2 3 DC AC Inverter The DC AC Inverter uses high frequency Power MOS FETs to generate a low distortion 115VAC 60Hz AC Output using PWM Control In order to ensure a high quality stable AC output the 60Hz sine wave is digitally synthesized and locked to a crystal oscillator The DC AC Inverter is fed from the 270VDC BUS Since this BUS is maintained regulated even during power transfer between AC power to Battery power and backward the AC Output generated by the Inverter is unaffected by any fluctuations or disturbances both voltage and frequency that may appear on the AC Input The Inverter is current limited and overload protected hence an overload failure or even a short on the loads fed by the M362 will not have any effect on the AC Input 8 2 4 Battery Switch The Battery Switch it composed of an Electronic Switch PWR MOSFET and a double pole electromechanical relay When the M362 is Off or the Safe to Remove Push button was activated the electromechanical relay is open physically disconnecting the
32. let that feeds the UPS is off v Make sure that all the switches on the M362 front panel are in the OFF position Connect the AC cable coming from the input source to the Input Connector J1 Connect the AC cable that feeds your equipment to the Output Connector J2 Connect the Battery cable from the External Battery Pack to J7 Connect the monitoring and control cables from the host computer to the appropriate connectors on the UPS back panel If the Remote Switches are not used verify that a mating connector is plugged into J4 on the rear panel of the Unit and that it has two jumpers one between Pin 8 to Pin 5 and a second jumper between pin 6 to pin 4 Turn on the 115VAC circuit breaker that provides power to the outlet that feeds the M362 The M362 is now ready for operation see Paragraph 5 MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 6 of 34 M362 Power Connectors Designation and Pin Out Table 2 1 Table 2 2 J1 AC Input J2 AC Output MS3452L20 22P or Eq MS3452L20 22S or Eq 115VAC 2 AWG 16 AWG 16 pe we awone Ea NEUT 115VAC 1 AC IN 1 AWG 8 mean AWG 8 AC IN 2 AWG 8 eal 115VAC 1 AWG 8 AWG 16 poe 115VAC 2 AWG 16 J7 Battery MS3452L20 275S or Eq GND AWG 16 Za BATT RTN AWG 16 IDRES 2 AWG 16 EA BATT RTN AWG 16 TMPSNS 1 AWG 16 E RESERVED AWG 16 N C c AWG 16 pom BATT AWG 16 PD TMPSNS 2 AWG 16 adie 24VDCRTN AWG 16 ea 24VDC AWG 16 pon BATT RTN AWG 16
33. ng of the M362 Bypass Relay AC 2 Relay Power Conditioner Isolation XFMR amp Filters Figure 1 M362 Main Blocks Diagram MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 5 of 34 2 Electrical Installation Instructions Before installing the unit please read carefully the Safety Instructions at the beginning of this manual Before connecting the M362 to the AC Input source verify the followings y Verify that the cables that will interface with the UPS are properly wired Tables 2 1 2 2 and 2 7 for Power connections and Tables 2 3 2 4 and 2 5 for signals connections y Verify that the electrical outlet that powers the UPS is a single phase 60Hz of the right line to line voltage 115VAC or 230VAC for the M362 4 and 440VAC for the 9 For the 4 only verify that the 115 230VAC AC Range Selector on the top cover of the M362 is set to the right range Verify that the outlet that provides the input power is protected by a double pole circuit breaker or fuses rated to 32 to 42Amp for 115VAC input 16 to 25Amp for 230VAC input and 10 to 15Amp for 440VAC input v The UPS Chassis is grounded to the rack by the GND connection on the back panel of the UPS The GND conductor should be AWG 8 or thicker For best EMI performance use a wide and short low inductance braid v Verify that the External Battery Pack s is properly installed Per the M333 4 User s Manual v Verify that the circuit breaker on the out
34. od AC Output High open indicates no or bad AC Output ON_BATT Signal Low indicates that the UPS operates on Battery power AC Input failure High open indicates that the AC Input has recovered LOW_BATT Signal Low indicates that the remaining Battery Charge has Discrete dropped below 35 High open indicates that the Battery Charge is above 35 Signals O_TEMP Signal Low indicates that the UPS temperature has exceeded its allowed maximum and if remains high the UPS will shut down goes to By pass in three 3 minutes High open indicates no Over Temperature condition All of the above signals are Opto isolated Open collector active Low V lt 0 5V 2mA signals Non active is Open High I lt 0 1mA 5Vdc Vmax 15Vdc Imax 10mA MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 33 of 34 Operating Up to 10 000 feet Non operating Air transport 50 000 feet Mechanical MIL S 901D Grade A Class amp 2 Shock Type vibration IAW MIL STD 167 1 Vibration Random vibration IAW MIL STD 810D Cat 9 Proc test condition l 3 2 11 Fig 514 3 34 Salt Spray Fog Per MIL STD 810F Method 509 4 Sand and dust Per MIL STD 810F Method 510 4 CE102 CS101 Navy Shipboard Limit CS114 10KHz to 400MHz Curve 5 CS115 CS116 RE101 RE102 Surface ship and Internal submarine limits RS101 Navy all Applications and RS103 2MHz to 18GHz 50V m MIL STD 461E Teniperatire Non operatin
35. ositions 80 110 and 120 are orange and the two uppermost positions 130 and 140 are red The colors do not have any special significance and are intended only to assist fast visual scanning of the load level 5 5 13 Batt Charge Bar Graph 29 The Charge Bar Graph indicates the charge level of the battery When the Battery Charger is actively charging the Battery the uppermost active segment of the Battery Charge Bar Graph will blink When all bars are solid Green no blinking it means that the Battery is fully charged The M362 senses the number of Battery Pack connected to it and adjust its display accordingly when more than two Packs are connected 100 means that all are fully charged 50 means that the average charge is 50 5 6 Battery Tests The M362 supports two types of Battery tests a Fast Test intended to verify that the Battery Pack is properly connected and there is no apparent failure and a Full Test that actually disconnects the AC Input relay and forces the M362 to operate on Battery Power alone 5 6 1 Fast Battery Test This test takes about 2 seconds and does not interrupt the AC Output even if the Battery Pack is not connected or bad During the test power is taken from both the AC Input and from the Battery The Test is not intended to verify that the Battery Pack is indeed capable of providing the full specified holdup time but only that there is no apparent failure in the Battery itself its connect
36. screte signal will go Low An Overload condition blocks the automatic transition to By pass preventing the propagation of a load s failure to the prime AC source MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 18 of 34 5 8 1 Output Current Limiting The DC to AC Inverter of the M362 that generates the AC Output has a current limiting circuit that limits the output current to about 40Amp peak It means that the maximum undistorted sine wave current that the M363 3 can provide is about 28Arms limiting the output to about 3 0KVA If the load on the UPS output exceeds this rating the current waveform will be clamped at 40Amp peak and the output current will be a distorted top sine wave When the overload approaches short circuit the current waveform will look like a trapezoid see the Figure 6 on next page A short circuit or an overload that tries to exceed the current limit threshold of the M362 and pulls down the output voltage to below 70Vrms will shutdown the AC Output within 0 7 seconds 5 8 2 Overload Protection The Overload Protection circuit of the M362 monitors the real output power of the load in Watts For light overloads below 3KW a timer is started and if the overload condition persists the UPS output will shut down after a delay that depends upon the depth of the overload For an overload of 2 9KW the allowed duration before the output will shutdown is about 5 seconds see Figure 8 For heavy overload or short
37. ser may Configuration save battery power by configuring commanding via the RS232 AC 2 to shutdown Transition Zero no interruption upon transition from AC Input to Battery and backward o AC Voltage 115Vac 4 PowerRatin 2 5KW 3KVA total for both outputs Output I AC2 should not be loaded by more than 1 1KVA 10Amp 60Hz 0 2 digitally synthesized from a crystal oscillator Distortions Less than 5 linear load Grounded Neutral by a removable Jumper When the ground connection Jumper is opened the AC Outputs are isolated from Input and chassis gt 10M Ohm at 500Vdc MIPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 32 of 34 Charder Low ripple temperature compensated current limited fast charger g Charges a fully depleted M333 4 Battery Pack in less than 8 hours Over discharge Overvoltage and Open Battery protections x Turning off the M362 opening the Battery Cable or pushing on the Safe to Protections Remove Push button disconnects the Battery remove power from the Battery s I O connectors Power On Off Switch When Off shuts down the M362 opens 2 pole relays that disconnect the AC Input AC Output and the Battery Pack Output On Off Switch Opens a 2 pole relay that disconnects the AC Outputs Front Panel input On Off Switch Opens a 2 pole relay that disconnects the AC Input Controls Alarm Off Push Button Silences the audible alarm Safe to Remove Batter Test Push Button Wh
38. ttery Pack Caution Verify that it is indeed safe to disconnect connect the Battery Pack by verifying that Green LED on the Battery Pack itself has turned off 5 5 11 Batt Test Pass LED 28 and Batt Test Fail LED 26 When the Battery Test Safe to Remove Push button 27 is briefly depressed the Pass Green LED 28 will blink for about 2 seconds indicating the Fast Battery Test is initiated If the Fast Test was successful the Pass Green LED will turn solid Green for 20 seconds before turning back off If the Fast Batt Test indicates a fail condition the Fail Red LED 26 will turn on for a 10 seconds and then will start blinking until reset by a repeated Pass Test If after the 2 seconds blinking of the Green Pass LED both the Pass and the Fail LEDs are off it means that the Fast Batt Test was denied For Battery Tests description and conditions see Paragraph 5 6 below When the Battery Test Safe to Remove Push button 27 is depressed for about five seconds both the Green Pass LED 28 and Red Fail LED 26 will start blinking together indicating that the UPS has received the command to disconnect the Battery see the Caution warning on next page MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 16 of 34 5 5 12 Load Level Bar Graph 13 A three color bar graph that indicates the load level real power in percent 100 indicates output power of 2 5KW The lower six bars 15 to 75 are green the next three p
39. ure LED 24 will start blinking Note If the UPS shuts down due to Overtemp it will automatically go into By pass Mode MPS Doc M362 4 amp 9_ USER_MANUAL RevB July 2014 Page 15 of 34 5 5 7 Battle Mode LED 25 When the M362 is commanded by the user into Battle Mode the Battle Mode White LED 25 will blink White warning the user that the Over temperature protection is disabled 5 5 8 By Pass LED 18 When the M362 is in By pass Mode see Paragraphs 1 2 4 and 5 4 all the front panel display except for the By Pass Yellow LED will be off The By Pass LED will be solid Yellow 5 5 9 Alarm Off Push button 21 When the audible alarm of the M362 is beeping briefly depressing the Alarm Off Push button 21 will silence it The silencing holds only for the current event that has triggered the alarm A new event will re activate the alarm Unconditional disabling of the audible alarm can be done by an RS232 command Note This Push button has an additional function when depressed for 5 seconds it resets the Battery Charge Level and any Battery Failure flags in the M362 useful when replacing a Battery Pack 5 5 10 Batt Test Safe to Remove Push button 27 This is a dual function push button When briefly depressed it initiates a Fast Battery Test When depressed for about five seconds it disconnects the Battery Pack allowing safe hot swapping of the Battery Pack When in Safe to Remove a short push will reconnect the Ba
40. ut is not provided or too low for normal operation the Red Input Fail LED 15 will be on and the Green Input OK LED 16 will be off When in the By Pass mode these two LEDs are off 5 5 2 Output Fail OK STBY LEDs 19 17 and 14 Indicate the status of the AC Output When the AC Output is normal the Green Output OK LED 17 will be on If the UPS is in Stand by Mode AC output disabled the Yellow Output STBY LED 14 will be on and the Green Output OK LED 17 will be off If the AC Output is not available because of an external over load or any other failure the Red Output Fail LED 19 will be on When in the By Pass mode these three LEDs are all off 5 5 3 On Batt Warning LED 20 When the M362 is using Battery power the Yellow On Batt Warning LED 20 will start blinking warning the user that the UPS is working on Battery power 5 5 4 Low Batt Warning LED 22 When the Battery Charge level is below 35 the Yellow Low Batt Warning LED 22 will blink warning the user that the Battery Level is low The above it true even when the Battery is charged by the M362 5 5 5 Over Load Shutdown LED 23 If the AC Output of the M362 has shut down due to a short circuit or an overload condition on the Output the Red Over Load Shutdown LED 23 will turn on indicating to the user that the shutdown was due to an overload condition 5 5 6 Over Temperature LED 24 In case of an Over Temperature of the M362 the Yellow Over Temperat
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