INTELLIGENT TRANSFER SWITCH

Transcription

1 IT-SWITCH 6A & 0A IT-SWITCH (models B & E) - 6A & 0A ITELLIGET TRASFER SWITCH 6A AD 0A USER'S GUIDE UPS/TA GB/ITS6.E 8/06/007

2 UPS/TA GB/ITS6.E page /4 FOREWORD We thank you for the trust you have in SOCOMEC UPS IT-SWITCH (models S, B and E). Our equipment complies with: - Electromagnetic compatibility directives as per standards E and E 5008-, - Low Voltage directives. SAFETY REQUIREMETS Conditions: Do read carefully these operation instructions before proceeding to the IT-SWITCH commissioning. For an optimal use, it is recommended to: - maintain the ambient temperature between 0 C and 35 C, - maintain the humidity rate below 90% (condensation-free). Precautions the user should take: WARIG: It is absolutely necessary to earth the IT-SWITCH before connecting any upstream and downstream supplies. Hazard remain present even if the IT-SWITCH output has been switched off ; supply voltage of sources and is indeed still present. Do not remove the cover without completely disconnecting the IT-SWITCH from the input supplies and. Do follow scrupulously the procedures when switching the IT-SWITCH on or off. Whatever the repairs, they must be exclusively executed by authorised and skilled staff. This equipment meets the requirements of the European directives applied to this product. Hence it is labelled as follows: This equipment is designed to a restricted distribution in compliance with the conditions defined by the standard E As a consequence, restrictions to the installation or complementary steps may be needed to prevent potential electromagnetic interference.

3 UPS/TA GB/ITS6.E page Certificate of Warranty This SOCOMEC UPS IT SWITCH is guaranteed against any defect in construction or operation arising from faulty design or materials for a period of months, valid from the date of purchase. The warranty certificate must OT be sent to the manufacturer but should be kept in a safe place together with proof of purchase, as these will be required should the product need to be repaired or replaced under the terms of the warranty. The period of validity of the warranty is calculated from the date of purchase by the end user from an authorised dealer (the date on the purchase document is sufficient for this purpose). The warranty is of the 'carry-in' kind: SOCOMEC UPS will provide parts and labour free of charge for all repair work carried out, but the customer is responsible for the cost and risk of transport to and from SOCOMEC UPS. For these stipulations to be valid, the Purchaser must comply with the following: - the product must only be returned in its original packing. Any damage caused to the product during transport, where the original packing has not been used, is not covered by the terms of this warranty. - The product must be accompanied by proof of purchase (i.e. invoice, receipt) stating the date of purchase and clearly identifying the product (i.e. bearing the model and serial number). The repair return authorisation number is given by the service centre over the phone after they have received a detailed description of the fault. Failure to provide one of these means that the warranty is no longer valid. - Should the customer not be able to provide proof of purchase, the serial number and the date of manufacture will be used to calculate the warranty period. This may mean the warranty period is shorter than it would otherwise be. - The warranty does not cover damage due to misuse (use out of tolerances: power supply, lightening, humidity, temperature, poor ventilation, etc.), tampering or any other kind of non-authorised intervention. - During the warranty period, SOCOMEC UPS liability is limited to the obligations as defined herein (repair or replacement).

4 UPS/TA GB/ITS6.E page 3 COTETS. PURPOSE OF THE IT-SWITCH...5. IT-SWITCH ARRAGEMET SUMMARY TABLE OF THE VARIOUS FUCTIOS AVAILABLE O MODELS S, B AD E FIED 9" RACK VERSIO (MODELS S OR B) HOT-SWAP 9" RACK VERSIO (MODEL E) MAI FEATURES COECTIO MEAS O THE REAR FACE: PRECAUTIOS UPO RECEIPT GEERAL RECOMMEDATIOS FOR ISTALLATIO ASSEMBLIG MODELS "S", "B" OR "E" I A STADARD 9" CABIET SAFETY REAR PAEL OF THE FIED IT-SWITCH (MODELS S OR B) REAR PAEL OF THE HOT-SWAP IT-SWITCH (MODEL E) REAR PAEL EQUIPPED WITH SOCKETS 6 A OF IEC30 TYPE REAR VIEW WITH TERMIALS (IT SWITCH 6A & 0A) DETAILS OF COECTIO TERMIAL ETERAL COMMUICATIO LIKS REMOTE TRASFER THROUGH POTETIAL-FREE COTACTS REMOTE TRASFER THROUGH SERIAL LIK.... OPERATIG PRICIPLE...4. COTROL PAEL DESCRIPTIO OF STATES AD ALARMS KEY COTROLS OPERATIO EPLAATIOS COMMISSIOIG - OPERATIO PRELIMIARY CHECKS SAFETY - REMIDERS PRELIMIARY CODITIOS LOAD SUPPLY CHAGIG THE SOURCE PRIORITY (MODELS S, B AD E) LOAD DISCOECTIO TRASFER TO MAUAL BYPASS (IT-SWITCH MODEL E) SEAMLESS REPLACEMET OF THE ELECTROIC RACK (IT-SWITCH MODEL E) DESCRIPTIO OF THE VARIOUS STATES TRASFER IMPOSSIBLE IMMIET SHUTDOW GEERAL ALARM DIFFICULTIES DURIG COMMISSIOIG MAITEACE TROUBLE SHOOTIG...3

5 UPS/TA GB/ITS6.E page 4 ABBREVIATIOS IT-SWITCH SW : Intelligent Transfer Switch : Switch MODBUS/JBUS : Industrial communication protocol, APRIL registered brand ote: Packaging Data labels. Fixed 9'' standard rack version (model S) The reference marked on the packaging and on the data labels: IT-SWITCH 6A MS.. Fixed 9'' HA rack version (model B) The reference marked on the packaging and on the data labels: IT-SWITCH 6A MB. 3. Hot Swap 9'' rack version (model E) The marking reference on the packaging is: - IT-SWITCH 6A MET or IT-SWITCH 0A MET if the system is fitted with terminal connections, - IT-SWITCH 6A MES if the system is fitted with sockets 6 A of IEC30 type. The references on the data labels are as follows: - IT-SWITCH 6A ET + serial number if the chassis is fitted with terminal connections, - IT-SWITCH 6A ES + serial number if the chassis is fitted sockets 6A of IEC30 type, - IT-SWITCH 6A ME or IT-SWITCH 0A ME + serial number for the hot swap rack.

6 SECTIO GEERAL PRESETATIO UPS/TA GB/ITS6.E page 5. PURPOSE OF THE IT-SWITCH The IT-SWITCH provides a dual redundant supply to the load(s) from two synchronous and alternating sources. The IT-SWITCH senses voltage outages and ensures the load automatically transfers to the alternate source (seamless for the load). The IT-SWITCH improves the load power supply reliability. The load can quickly be transferred (either automatically or manually) from the so called "Preferred" source to the "alternate" source (and vice versa). ote: this document provides information in terms of safety, connection and using.. IT-SWITCH ARRAGEMET Three versions of IT-SWITCH are available: - fixed 9'' standard rack version (model S) - fixed 9'' HA rack version (model B) - hot-swap 9'' rack version (model E), with a manual bypass for replacing the live IT-SWITCH without interrupting the load power supply. Both versions can be mounted in standard 9'' cabinets... Summary table of the various functions available on models S, B and E Standard IT-SWITCH HA IT- SWITCH Hot swap HA IT-SWITCH FUCTIOS Model S Model B Model E - Type of transfer: manual without overlapping synchronous/asynchronous synchronous type only - Detection of short circuit on the output - Counter for successive transfers upon failure - Hot Swap unit - Manual by-pass - Serial link (JBUS) - Dry contacts - Selection of priority source - Event log - Socket for commissioning and servicing PC sources High Availability

7 UPS/TA GB/ITS6.E page 6.. Fixed 9" rack version (Models S or B) OVERVIEW Front: Rear: - Mimic panel - Access door for connecting the maintenance PC - handles connections through socket 6 A of IEC 30 type - see section 8 for: - source input - output to the loads (4 output sockets). Dimensions are mentioned in section 3. BASIC SCHEME SOURCE IPUTS SW SW TO THE LOADS

8 UPS/TA GB/ITS6.E page 7.3. Hot-swap 9" rack version (Model E) This version additionally comprises a chassis (9'' format) in which can be found the manual bypass switch. The chassis accommodates the IT-SWITCH rack that can be removed without disconnecting the load supply. Dimensions are mentioned in section 3. OVERVIEW A B A Hot-swap IT-SWITCH rack including on the front: - the mimic panel, - the access door to the manual bypass switch and to the connection socket for maintenance PC, - the handles for pulling out the rack B Chassis including the MAUAL BYPASS and rear connections. BASIC SCHEME IPUT SOURCES SW SW A B TO THE LOADS A Hot-swap IT-SWITCH rack with switching electronics. B Fixed 9'' chassis with the manual bypass.

9 UPS/TA GB/ITS6.E page 8 3. MAI FEATURES Electrical data and performance Supply Single phase Input voltages (source and source ) 0V-0V-30V-40V ± 0 % rms Rated frequency Hz ± 0 % Phase tolerance admitted between Source/Source for seamless transfer 5 Max gradient for frequency variation 0 Hz/sec Rated current 6A or 0A Peak factor 4 CURRET Model S Models Models E B and E (6A) (0A) Overloads, In h 3h h,5 In 0' 30' 0',5 In ' 6' ' In 0" ' 0" Ventilation atural Maxi ambient temperature 40 C Humidity < 90 % condensation-free Altitude 000 m Protection index IP Mechanical data Width Depth 3 Height Weight Fixed models S and B 6A 446 mm 300 mm 3 mm 8,5 kg Hot-swap model E 6A & 0A 449 mm 390 mm 33 mm 4 kg 3.. Connection means on the rear face: Connections are to be done on the rear panel of the IT-SWITCH. The fixed IT-SWITCH (models S or B) is fitted with sockets 6A of IEC 30-type (see 8). The hot-swap IT-SWITCH (model E) is fitted with either: - screw terminals (IT-SWITCH 6A and 0A) - sockets 6 A of IEC 30 type (IT-SWITCH 6A only). 484 mm with fixing squares 3 + 0mm including screws and + 40mm including handles (overall dimension: + 50 mm)

10 SECTIO ISTALLATIO - COECTIOS UPS/TA GB/ITS6.E page 9 4. PRECAUTIOS UPO RECEIPT Always inspect the packaging condition of the equipment upon receipt (in terms of damage, shocks, or enclosure deformation). If necessary, write down discrepancies on the delivery note. Carefully extract the IT-SWITCH from its packaging, knowing that the weight is not evenly shared within the case. 5. GEERAL RECOMMEDATIOS FOR ISTALLATIO The environment should: - be protected by humidity, - provide no obstacle to prevent air circulation, especially if the IT-SWITCH is located in a cabinet, - allow sufficient ventilation to ensure a constant operating temperature, - be dry, clean and dust free, - be free of flammable vapour or corrosive smoke. REMIDER : The ambient temperature recommended is between 0 and 35 C. 6. ASSEMBLIG MODELS "S", "B" OR "E" I A STADARD 9" CABIET The ensure proper assembling, the IT-SWITCH (models S, B or E) shall lie on the horizontal side fixing bars in the cabinet (see fig. marking A) or on the support brackets at the rear of the rack (see fig. ). Models S and B (fixed) is provided with assembling accessories ( braces marked E443) for fastening to the front frame of the standard 9" cabinet (see fig. 3). Model E (hot-swap) has a built-in fastening means on the chassis (see fig. 4). Figure Figure 3 A A Figure Figure 4

11 UPS/TA GB/ITS6.E page 0 7. SAFETY IMPORTAT It is recommended to carefully read this manual prior to source and load connections. This manual should be kept close to the IT-SWITCH for easy consultation if needed. CAUTIO For connections to terminals (IT-SWITCH model E): EARTHIG COECTIOS ARE TO BE MADE PRIOR TO SOURCE COECTIOS. IMPORTAT ELECTRICAL COECTIOS AS WELL AS CABLIG OPERATIOS SHOULD OLY BE MADE BY SKILLED AD SUITABLY TRAIED PERSOEL. 8. REAR PAEL OF THE FIED IT-SWITCH (models S or B) The rear panel comprises (see 9..): - input male sockets IEC30 6A, - 4 output female sockets IEC30 6A - hot-swap connectors with securing screws for external communication: - 3 for alarm transfers through potential-free contacts (use twisted cables), - 3 for remote transfers through serial link (use shielded twisted cables). IPUT SOURCE SHIELD COECTIO IPUT SOURCE LOAD OUTPUT 4 sockets available ETERAL COMMUICATIO Details about the connection of IEC sockets: IPUT SOURCE IPUT SOURCE LOAD OUTPUT EUTRAL PHASE PE: Electrical protective conducteur PHASE PE: Electrical protective conducteur EUTRAL

12 UPS/TA GB/ITS6.E page 9. REAR PAEL OF THE HOT-SWAP IT-SWITCH (MODEL E) The rear panels can either comprise sockets 6 A of IEC 30 type or terminals. ote: for the IT SWITCH 0A, connection is only by means of terminals. 9.. Rear panel equipped with sockets 6 A of IEC30 type The rear panel shows: - inputs male sockets IEC30 6A, - 4 output female sockets IEC30 6A, - hot-swap connectors with securing screws for external communication: - 3 for alarm transfers through potential-free contacts (use twisted pairs), - 3 for remote transfers through serial link (use shielded twisted cables). IPUT SOURCE SHIELD COECTIO IPUT SOURCE LOAD OUTPUT 4 sockets available ALARM TRASFER ETERAL COMMUICATIO Please refer to section 8 for connections. 9.. Rear view with terminals (IT SWITCH 6A & 0A) Loosen the 6 screws on the rear panel to connection area. REAR PAEL The connection area includes the terminals and the connectors.

13 UPS/TA GB/ITS6.E page COECTIO AREA 3 3 Connector to the chassis on the IT-SWITCH rack Manual Bypass switch Connection terminal to SOURCES and LOAD Alarm transfer External communication 9.3. Details of connection terminal SOURCE SOURCE LOAD = eutral = Phase 3 = PE 7 = eutral 8 = Phase 9 = PE 4 = eutral 5 = Phase 6 = PE 0. ETERAL COMMUICATIO LIKS 0.. Remote transfer through potential-free contacts Connector 3 is for remote transfer of the following states and alarms: STATUS and ALARMS Source O Source O Source preferred Transfer impossible General Alarm terminals -, closing contact terminals 3-4, closing contact terminals 5-6, closing contact terminals 7-8, closing contact terminals 9-0, contact closed upon failure OTE: breaking capacity of contacts: 0,5 A with 5VAC. Use twisted wires. These contacts are set to close by default. 0.. Remote transfer through serial link Connector 3 enables the connection through the RS485 (or RS4) type serial link under the MODBUS/JBUS protocol. For address assignment, please refer to manual UPS/TA GB/MTCJBUS.

14 UPS/TA GB/ITS6.E page 3 RS485 Link On 3, strap terminals and if the IT-SWITCH is line end. terminal : T+ / R+ terminal 3: T- /R- terminal 7: 0V Isolated RS4 Link On 3, strap terminals and ; as well as 5 and 6 if the IT-SWITCH is line end. terminal : T+ terminal 3: T- terminal 4: R+ terminal 5: R- terminal 7: 0V Isolated OTE: Use shielded and twisted wires For communication with a building management system or TOP VISIO supervision system, use serial link RS485.

15 UPS/TA GB/ITS6.E page 4 SECTIO 3 OPERATIO. OPERATIG PRICIPLE In normal operating conditions, the IT-SWITCH supplies the load from the preferred source. The latter can be selected by the operator, depending on the operating requirements of the site. Two different transfer modes can be selected: - the manual mode by pressing the push button on the control panel: " SOURCE " to supply the load from source " SOURCE " to supply the load from source - or the automatic mode, upon source failure. In such a case, the IT-SWITCH: - senses a failure on the preferred source and ensures the automatic load transfer to the alternate source, - senses a failure on the alternate source and ensures the automatic seamless load transfer to the priority source, following a manual transfer to the alternate source. OTE: the preferred source (source or source ) is selected from the control panel (see.) of from the TOP VISIO supervision workstation.

16 UPS/TA GB/ITS6.E page 5. COTROL PAEL It comprises a mimic panel that represents the IT-SWITCH and the flow of energy that passes through it. Three keys are for operating the system... Description of states and alarms GREE led SOURCE PREFERRED GREE led SOURCE PREFERRED GREE led GREE led IPUT VOLTAGE PRESET O SOURCE or SOURCE SOURCE or SOURCE O ORAGE led TRASFER BLOCKED (see.3.3.) ORAGE led TRASFER IMPOSSIBLE (see.3..) RED led Slow blinking: short-circuit current detected Rapid blinking: IMMIET SHUTDOW (see 4..) Fixed light on: MAUAL BYPASS switch in position or ORAGE led MAUAL BYPASS of source or source O (IT-SWITCH model E) ot used (IT-SWITCH models S and B) ORAGE led GEERAL ALARM

17 UPS/TA GB/ITS6.E page 6.. Key controls Key makes it possible to close static switch SW. Key makes it possible to close static switch SW. Key (alarm reset) shows three functions: - light pressing for resetting the audible beep, - long pressing (5 seconds minimum) for selecting the preferred source. - pressing together with key or (depending on the source supplying energy) causes the load disconnection (see.3.4)..3. OPERATIO EPLAATIOS The IT-SWITCH provides two main operating modes: - the manual transfer by the operator either locally or remotely (through the TOPVISIO supervision centre) - the automatic transfer by detection when the voltage of the preferred source exceeds the permitted values. The transfer is without sources overlapping..3.. Manual transfer The operator can control the load transfer from one source to the other by using keys or on the control panel. When pressing any keys, an audible beep is given to indicate that the request has been taken into account. The manual transfer is seamless. If synchronisation conditions are not fulfilled after 5 seconds (factory standard setting), an asynchronous transfer is performed. If the latter is impossible (e.g. input source out of tolerance) the following led lights! TRASFER IMPOSSIBLE ote: The alarm is automatically deleted when normal conditions are restored..3.. Automatic transfer The automatic transfer from the preferred source to the alternate one is seamless for the load. It is carried out if a voltage drop occurs on the preferred source or if the latter fails. When the preferred source is restored, the IT-SWITCH automatically transfers the load back to this source after 3 seconds. An automatic transfer from the alternate to the preferred source can also be performed following a manual transfer request.

18 UPS/TA GB/ITS6.E page 7 To ensure safe transfer, the IT-SWITCH constantly monitors if the alternate source is present and within the tolerances. If not, the transfer function is inhibited and the IT-SWITCH immediately gives the alarm to inform the operator that no transfer can be performed. In case of short-circuit on the output of one of the loads supplied, the transfer function is inhibited. This facility is for preventing the short-circuit transmission to the other path which is therefore left untouched. IMPORTAT: this functionality is not available on the IT-SWITCH model S Transfer can either be synchronous or asynchronous depending on the synchronisation of the sources and on the configuration of the IT-SWITCH. Synchronous transfer The synchronous transfer is automatic when both sources S and S fulfil synchronisation conditions, that are when the phase shift is within the values admitted (in standard +/- 5 ). In such case, the source switching does not cause changes of phase. If the phase shift exceeds the values admitted, the synchronous automatic transfer to the other source is inhibited, unless the system is set with the synchronous and asynchronous conditions (software configuration). OTE: The IT-SWITCH is set in standard for synchronous and asynchronous type transfers. It can however be set for synchronous transfers only if the load connected is sensible to phase changes. Most information processing equipment, servers, computers and so on, are not sensible to significant changes of phase. IMPORTAT: the IT-SWITCH model S can not be set for synchronous transfer only. Asynchronous transfer The automatic asynchronous transfer is only executed if the software setting has been validated (standard factory setting) and if sources S and S are not synchronised (phase shift exceeding the admitted values). In such a case, the source switching can show a significant change of phase. This type of transfer is for safe load switching between sources that are not constantly monitored or exceptionally out of phase Transfer blocked In the event of five consecutive automatic transfers within minutes (0 seconds), the alarm (or the alarm: 0 ) is given. At this stage, the transfer is blocked and the load is supplied by the alternate source. ote: to activate the transfer, press key or depending on the source preferred. IMPORTAT: the IT-SWITCH model S has no "transfer blocked" configuration

19 UPS/TA GB/ITS6.E page Load disconnection The load disconnection control is for load switching off, while sources and are present on the IT-SWITCH. The control key is :"alarm reset" (see.) Overload conditions As soon as the IT-SWITCH is overloaded (load rate > 03%) the general alarm is given. For currents and overload permitted values, please refer to 3. Operation on the preferred source: A request for transfer to the alternate source can be performed when the overload is half the nominal overload capacity. Two cases can arise: - if the transfer can be achieved, the load is transferred to the alternate source, - if the transfer is impossible, the IT-SWITCH gives the "imminent shutdown" alarm. When the maximum overload capacity is reached, the load is disconnected. Operation on the alternate source: In case of overload, the "imminent shutdown" alarm is given. When the maximum overload capacity is reached, the load is disconnected by the IT-SWITCH. Principle of the automatic start up: In case both sources fail while the IT-SWITCH is supplied by one or the other source, the unit resumes operation with the first one to be restored. The transfer to the preferred source is automatic when the latter is restored. The automatic start-up function can be configured and is activated by default.

20 UPS/TA GB/ITS6.E page 9 3. COMMISSIOIG - OPERATIO 3.. Preliminary checks Only initiate commissioning after completing: - earth bonding, - adequate connections of the IEC sockets (or connections to terminals). 3.. Safety - Reminders CAUTIO Even when switched off, the IT-SWITCH is constantly live, supply voltage is present at the input of source and. ADVICE Any loose item is secured. Do carefully follow the using or maintenance instructions described in the manual Preliminary conditions Source and Source are live Load supply From the control panel, press key:, for the load to be supplied by source, or, for the load to be supplied by source. If the operator selects the alternate source, the IT-SWITCH supplies the load from the source selected. However, the IT-SWITCH automatically switches the load to the preferred source after a few seconds Changing the source priority (models S, B and E) OTE: By default, source is preferred when switching on the unit. Press key for 5 seconds, and make sure that the led lights confirm the change of source. After changing the source priority, the load is automatically transferred, after a few seconds, to the newly preferred source.

21 UPS/TA GB/ITS6.E page Load disconnection Load disconnection opens the circuit of each source. The output is therefore no longer supplied. Press key "ALARM RESET" together with key or depending on the source that is supplying load current. At this stage the load is no longer supplied. OTE: If an alarm is displayed, it must be reset before sending any control. IMPORTAT: For an IT-SWITCH with manual bypass, the rack of the IT-SWITCH IS locked to the chassis and can not be removed as long as the switch is in position "" (normal operation). To remove the rack, cut off the input supply of sources and in order not to apply voltage to the load and place bypass the switch to position "" or "" Transfer to manual Bypass (IT-SWITCH Model E) The IT-SWITCH (model E) has two "manual bypasses": one to source and the other one to source. The load can be directly supplied by one or the other source. The manual bypass is controlled by 3-position switch located behind the access door in the front of the unit: - position "": position for normal operation, - position : manual bypass supplied by source, - position : manual bypass supplied by source Load transfer to manual bypass As each source has its "manual bypass", two cases can arise: a. the load is supplied by source : - open the access door on the front, - set the switch to position At this stage, the load is directly supplied by source. b. the load is supplied by source : - open the access door on the front, - set the switch to position At this stage, the load is directly supplied by source.

22 UPS/TA GB/ITS6.E page Return from manual bypass to the IT-SWITCH a. the load is supplied by manual bypass : On the rack of the IT-SWITCH : - open the access door on the front, - set the switch to "" At this stage the load is supplied through the IT-SWITCH. b. the load is supplied by manual bypass : On the rack of the IT-SWITCH: - open the access door on the front, - set the manual bypass switch to "". At this stage the load is supplied through the IT-SWITCH Seamless replacement of the electronic rack (IT-SWITCH model E) In normal operating conditions, the manual bypass switch is set to position "". Thus, the electronic rack is mechanically locked to the chassis in order to avoid any mishandling Removing the electronic rack Before pulling out the electronic rack, set the manual bypass switch to position or depending on the using conditions. Remove the rack; the load is still supplied by the selected path Replacing the electronic rack When repositioning the electronic rack, positions between the switch in the rack and the red marking on the chassis must correspond (see drawing below). The position of the manual bypass switch should correspond to the one indicated by the red marking on the chassis.

23 UPS/TA GB/ITS6.E page Operations to be performed: - open the access door on the front of the electronic rack, - place the manual bypass switch to the same position as the one indicated by the red marking on the chassis, - introduce the electronic rack into the chassis. 4. DESCRIPTIO OF THE VARIOUS STATES 4.. Transfer impossible The transfer becomes impossible if the conditions are as follows: - voltage outage or voltage out of tolerance on alternate source, - frequency out of tolerance, - phase on both sources out of tolerance and setting for synchronous transfer only - failure on the alternate source, - short-circuit downstream of the system. 4.. Imminent shutdown Conditions leading to imminent shutdown are as follows: - equipment ambient temperature fault, - overload alarm on preferred path supplying the load and transfer impossible (alternate source not available), - overload alarm on alternate path supplying the load. ote: the alarm IMMIET SHUTDOW informs the operator that the equipment is about to be stopped for safety reasons. 5. GEERAL ALARM The general alarm comprises: - imminent shutdown, - transfer impossible, - return impossible, - overload, - equipment ambient temperature.

24 SECTIO 4 UPS/TA GB/ITS6.E page 3 TROUBLE SHOOTIG AD MAITEACE 6. DIFFICULTIES DURIG COMMISSIOIG External causes: Check the connection and the presence of the power sources. In case of a malfunction, ensure neutral and phase connections are suitable on each source. If the green leds "Input voltage present on source " and "Input voltage present on source " are lit together with the orange led "transfer impossible", ensure that both sources have the same phase. For the proper functioning of the equipment, both supply sources should show: - the same voltage, - the same frequency, - the same phase. Internal causes, operation checking: If only the red led IMMIET SHUTDOW is lit, the electronic temperature has reached a critical level. 7. MAITEACE The IT-SWITCH is an equipment that was tested and set by the factory in compliance with quality requirement. Any internal intervention should only be made by personnel approved by SOCOMEC UPS. 8. TROUBLE SHOOTIG (See next page)

25 UPS/TA GB/ITS6.E page 4 A B C D E F G COSTAT POSSIBLE CAUSE OPERATIO TO BE PERFORMED Mimic panel not supplied Both input sources of the IT-SWITCH are absent Ensure that the source input voltage is present (no LED O) Connection problem Check that inputs S and/or S are connected Ensure that the rack (model E) has been properly inserted Impossible to switch Q50 Rack (ME) not properly inserted Pull out the rack, check the position of Q50 and set it to the initial position (Model E only) Q50 in the wrong position (I or II) Caution: before switching Q50 to the second source, ensure that it is present Slow blinking of the output red LED Short-circuit detected (and stored) on the load output Check the load output circuit in order to find out the anomaly before resetting the alarm. (mimic panel) Detection "temperature too high" Check the conditions of the unit environment: Rapid blinking of the output red LED T amb / cabinet ventilation / heat source close to the unit (mimic panel) Overload + Transfer impossible Refer to E (overload) Failure of one of the source Source absent or out of tolerances Refer to A (S or S) Manual bypass on the second source Supply the load via the second source and return to position "" Overload and operation on alternate source Ensure that the IT-SWITCH unit is not overloaded Overload capacity reached Reduce the load rate and wait for the power circuit to cool down Impossible to perform a manual transfer to the Refer to E Refer to E second source Alarm «Transfer blocked» O wrong contact on the input Check the tightening of input terminals and upstream protections (circuit breakers) Ensure that sources input cables are not damaged Preferred source not operating properly Ensure that the source is neither faulty nor overloaded H Blinking LED (source or ) Refer to E Sources are not synchronised And load on alternate source (after automatic transfer) And configuration "synchronous only" Refer E: Reduce the load Try to obtain the synchronisation between both sources GREE led SOURCE PREFERRED - light pressing: for alarm reset GREE led IPUT VOLTAGE PRESET O SOURCE or SOURCE GREE led ORAGE led RED led ORAGE led Fixed light on: SOURCE or SOURCE O Blinking: switch alarm (e.g. overload) TRASFER IMPOSSIBLE (second source not available or not synchronised) ( See.3..) Slow blinking: short-circuit current detected Rapid blinking: IMMIET SHUTDOW ( See 4..) Fixed light on: MAUAL BYPASS switch in position or MAUAL BYPASS of source or O (for IT-SWITCH model E). ot used for IT-SWITCH models S or B. - long pressing (5 seconds ): to select the preferred source - simultaneous pressing with key or : load disconnection Key is for the closing command of switch SW. Key is for the closing command of switch SW. ORAGE led ORAGE led GEERAL ALARM TRASFER BLOCKED (see.3.3.)