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7 OPERATION
This symbol refers to the operations of a parallel system.
NOTE !
Verify for correct input/output cabling before connecting Utility to the
UPS.
Open only the front door, do not remove any panels.
Now you can initiate the start-up procedure of the UPS system.
There is no need for specific knowledge if you follow carefully the stepby-step instructions given below.
But we recommend, that at least the initial procedure, should be performed by an instructed person.
Check after every step for correct reaction of the UPS (LED’s on the panel), and correct voltage and current measurements, before you proceed to the next step.
If you encounter any problems during the following procedures, you should not continue, but contact GE Global Services .
Find on the following pages the descriptions of the various procedures of start-up and shutdown for single and parallel UPS’s , divided into the following principal chapters:
7.1 PROCEDURES FOR SINGLE UPS
7.2 PROCEDURES FOR UPS FUNCTIONING AS FREQUENCY CONVERTER
7.3 PROCEDURES FOR PARALLEL SYSTEM
7.4 PROCEDURES FOR PARALLEL SYSTEM WITH COMMON BATTERY
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7.1 PROCEDURES FOR SINGLE UPS
7.1.1 Start-up of the SG Series
Verify with open front door: Switch Q1 and Q2 must be open (Pos. O).
1. Connect the Utility power on the UPS .
(In case of separate inputs for Rectifier and
Bypass , connect both).
• Power supply starts up.
Indicated with flashing alarm and buzzer sound .
• LED’s as indicated will be lit.
• Press mute , to reset alarm and buzzer .
2. Close Q1 (Pos. I) .
• Bypass Utility connects to the output.
• Rectifier starts automatically, blinking LED
• indicates Soft-start.
At the end of Rectifier Soft-start, LED remains lit.
3. Connect the Battery to the UPS by closing the Battery Switch or Fuses, in case of
External Battery .
4. Press inverter on ” ( I ) key .
• Soft-start of Inverter indicated with blinking LED .
• At the end of Soft-start the LED remains lit.
• Automatic transfer from Bypass to
Inverter .
• UPS output LED indicates Load on
Inverter .
The LCD must display on the main screen the status “LOAD ON INVERTER” .
END OF PROCEDURE
NOTE !
The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in the case of a Utility Failure .
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7.1.2 Maintenance shutdown (Load on Q2)
Initial status:
Load supplied from Inverter .
1. Press inverter off ” ( O ) key and hold until the LED inside the Inverter symbol turns
OFF .
• Load is transferred to Utility .
• Inverter shuts down.
• LED Inverter must be OFF.
The LCD screen must display the status “LOAD ON BYPASS”.
2. Close Q2 (Pos. I) .
• Load is now supplied parallel through
Bypass and Q2 .
• LED for Manual Bypass lights up.
3. Open Q1 (Pos. O) and then press “ total off ” button .
• Load is now supplied from Manual Bypass .
• Rectifier shuts down and all output and input contactors are opened.
The LCD panel must display the main screen, indicating the status “LOAD OFF” .
4. Disconnect the Battery from the UPS in case of External Battery .
• Wait 5 minutes for DC-Link Capacitors discharge.
END OF PROCEDURE
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7.1.3 From Manual Bypass (Q2) to normal function VFI
Initial status:
Load supplied from Manual Bypass .
1. Close Q1 (Pos. I) .
• Bypass connects to Load .
LED Load on Bypass lights up.
• Rectifier starts automatically and LED in Rectifier symbol and LED Battery charge light up.
2. Open Q2 (Pos. O) .
• LED Manual Bypass turns OFF.
3. Connect the Battery to the UPS by closing the Battery Switch or Fuses, in case of
External Battery .
4. Press “ inverter on ” ( I ) key .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED remains lit.
• Automatic transfer from Bypass to
Inverter .
• UPS output LED indicates Load on
Inverter .
The LCD must display on the main screen the status “LOAD ON INVERTER” .
END OF PROCEDURE
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7.1.4 Complete UPS shutdown (No Load supply)
NOTE !
The Load must be disconnected.
Initial status:
Load supplied from Inverter .
1. Press total off ” button .
• Load is disconnected from UPS.
• Rectifier is shut down and all output and input contactors will be opened.
• LED’s, Rectifier, Inverter and Load are OFF.
2. Open Q1 (Pos. O) .
• LED service check lights up.
3. Disconnect the Battery from the UPS in case of External Battery .
• Wait 5 minutes for DC-Link Capacitors discharge.
4. Disconnect the Utility .
• All LED’s are OFF.
END OF PROCEDURE
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7.1.5 Restore to normal operation after “ total off”
View of the panel after pressing the button
“ total off” .
• All Contacts are open.
• Rectifier , Inverter and Static-Switch shutdown.
1. Reset “total off” by pressing and holding the “total off” button and then the
“inverter on” ( I ) key simultaneously until Load is supplied from Bypass and the Rectifier starts.
• Output connects to Bypass Utility .
• Rectifier starts with blinking LED.
• At the end of Soft-start the LED remains lit.
• The LCD screen shows: “LOAD ON BYPASS”.
• Press mute , to reset alarm and buzzer .
2. Connect the Battery to the UPS by closing the Battery Switch or Fuses, in case of
External Battery .
3. Press inverter on ” ( I ) key .
• Soft-start of Inverter indicated with blinking LED .
• At the end of Soft-start the LED remains lit.
• Automatic transfer from Bypass to
Inverter .
• UPS output LED indicates Load on
Inverter.
The LCD must display on the main screen the status “LOAD ON INVERTER” .
END OF PROCEDURE
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7.1.6 Restore to normal operation after EPO (Emergency Power Off)
UPS panel after activation of
EPO (Emergency Power Off) with
Utility not available, i.e. complete shutdown of the UPS.
In this case wait until Utility is again available, then proceed to restart the UPS as described below. Points 1 through 3.
•
•
UPS panel after activation of EPO
(Emergency Power Off) with Utility available .
All Contacts are open.
Rectifier , Inverter and Static-Switch shutdown.
1. Reset the EPO (Emergency Power Off) button .
• Press mute , to reset alarm and buzzer .
2. Press inverter off ” ( O ) key .
• Output connects to Bypass Utility .
• Rectifier starts with blinking LED.
• At the end of Soft-start the LED remains lit.
The LCD screen shows: “LOAD ON BYPASS”.
3. Press inverter on ” ( I ) key .
• Inverter starts with blinking LED .
• At the end of Soft-start the LED remains lit.
• Automatic transfer from Bypass to
Inverter .
• UPS output LED and LCD screen indicate both: “LOAD ON INVERTER”.
END OF PROCEDURE
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7.2 PROCEDURES FOR UPS FUNCTIONING AS FREQUENCY CONVERTER
When the SG Series functions as a Frequency Converter , the Automatic Bypass and Manual
Bypass functions are disabled.
Therefore the Load cannot be transferred to Utility in case of overload, short circuit, or Inverter failure.
In situations where the UPS needs to be shutdown for maintenance purposes, also the Load must be shutdown or disconnected
7.2.1 Start-up of the SG Series as frequency converter
Verify with open front door: Switch Q1 must be open (Pos. O).
1. Connect the Utility power on the UPS.
• Power supply starts up.
Indicated with flashing alarm and buzzer sound .
• LED’s as indicated will be lit.
• Press mute , to reset alarm and buzzer .
2. Close Q1 (Pos. I) .
• Rectifier starts automatically, blinking LED indicates Soft-start.
• At the end of Rectifier Soft-start, LED remains lit.
3. Connect the Battery to the UPS by closing the Battery Switch or Fuses, in case of
External Battery .
4. Press inverter on ” ( I ) key .
• Soft-start of Inverter indicated with blinking LED .
• At the end of Soft-start the LED remains lit.
• UPS output LED indicates Load on Inverter .
The LCD must display on the main screen the status “LOAD ON INVERTER” .
END OF PROCEDURE
NOTE !
The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in the case of a Utility Failure .
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7.2.2 Complete UPS shutdown (No Load supply)
NOTE !
The Load must be disconnected.
Initial status:
Load supplied from Inverter.
1. Press total off ” button .
• Load is disconnected from UPS.
• Rectifier is shut down and all output and input contactors will be opened.
• LED’s, Rectifier, Inverter and Load are
OFF.
2. Open Q1 (Pos. O) .
• LED service check lights up.
3. Disconnect the Battery from the UPS in case of External Battery .
• Wait 5 minutes for DC-Link Capacitors discharge.
4. Disconnect the Utility .
• All LED’s are OFF.
END OF PROCEDURE
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7.2.3 Restore to normal operation after “ total off”
View of the panel after pressing the button
“ total off” .
• All Contacts are open.
• Rectifier , Inverter and Static-Switch shutdown.
1. Reset total off ” by pressing and holding the “ total off ” button and the “ inverter on ” ( I ) key simultaneously until the
Rectifier starts.
2. Connect the Battery to the UPS by closing the Battery Switch or Fuses, in case of
External Battery .
3. Press inverter on ” ( I ) key .
• Soft-start of Inverter indicated with blinking LED .
• At the end of Soft-start the LED remains lit.
• UPS output LED indicates Load on
Inverter .
The LCD must display on the main screen the status “LOAD ON INVERTER” .
END OF PROCEDURE
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7.2.4 Restore to normal operation after EPO (Emergency Power Off)
UPS panel after activation of EPO
(Emergency Power Off) with Utility not available, i.e. complete shutdown of the UPS.
In this case wait until Utility is again available, then proceed to restart the UPS as described below. Points 1 through 3.
UPS panel after activation of EPO
(Emergency Power Off) with Utility available .
• All Contacts are open.
• Rectifier , Inverter and Static-Switch shutdown.
1. Reset the EPO (Emergency Power Off) button .
• Press mute , to reset alarm and buzzer .
2. Press inverter off ” ( O ) key .
• Rectifier starts with blinking LED .
• At the end of Soft-start the LED remains lit.
• The LCD screen shows: “LOAD OFF”.
3. Press inverter on ” ( I ) key .
• Inverter starts with blinking LED .
• At the end of Soft-start the LED remains lit.
UPS output LED and LCD screen indicate both: “LOAD ON INVERTER”.
END OF PROCEDURE
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7.3 PROCEDURES FOR PARALLEL SYSTEM
7.3.1 Parallel System start-up
Verify on all Units , with open front door: Switches Q1 and Q2 must be open (Pos. O).
1. Connect the Utility power on all UPS’s.
(In case of separate inputs for Rectifier and Bypass , connect both).
• Power supply starts up. Indicated with flashing alarm and buzzer sounds .
• LED’s as indicated will be lit.
• Press mute , to reset alarm and buzzer .
First operated unit All other units of the system
2. Close Q1 (Pos. I) on all Units .
• When closing Q1 on the last unit of the parallel system, the Bypass of all Units connects to the Load .
• Rectifiers start automatically, blinking LED indicates Soft-start.
• At the end of Rectifier Soft-start, the LED remains lit.
• LED’s service check turn OFF.
First operated unit All other units of the system
3. Connect the Battery to all Units by closing the external Battery Switches or Fuses, in case of External Battery .
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4. Press inverter on ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends)
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
NOTE !
The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in the case of a Utility Failure .
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7.3.2 Maintenance system shutdown (Load supplied from Q2 on all Units)
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press inverter off ” ( O ) key on all Units, and hold until the LED inside the Inverter symbol turns OFF .
At no redundancy, the system will transfer to Utility supply.
First operated unit All other units of the system
(Pos. I) on all Units .
Load is now supplied from Utility in parallel from Bypass and Manual Bypass Q2 of all Units .
First operated unit All other units of the system
(Pos. O) and then press “ total off ” button on all Units .
The Bypass of all Units will disconnect and all Rectifiers are shutdown.
First operated unit All other units of the system
4. Disconnect the Battery, in case of External Battery, from all Units .
• Wait 5 minutes for DC-Link Capacitors discharge.
First operated unit
END OF PROCEDURE
All other units of the system
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7.3.3 From Manual Bypass (Q2) to normal function VFI
Initial status: Load supplied from Manual Bypass .
All Q2 of the system are closed .
First operated unit All other units of the system
1. Close Q1 (Pos. I) on all Units .
The Rectifiers will start automatically and at the closure of Q1 of the last Unit , the Bypass of all Units will be activated.
First operated unit All other units of the system
2. Connect the Battery to all Units by closing the external Battery Switches or Fuses, in case of External Battery .
3. Open Q2 (Pos. O) on all Units .
First operated unit
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4. Press inverter on ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends).
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
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7.3.4 Separate a Unit from the parallel system (System Redundancy)
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press and hold “ inverter off ” ( O ) key on the Unit to separate, until the LED turns OFF .
Load supplied from Inverter(s) of the other Unit(s) of the parallel system .
First operated unit All other units of the system
2. Open Q1 (Pos. O) and, only when the LED service check is ON, press “ total off ” button on the Unit to separate .
First operated unit All other units of the system
3. Disconnect the Battery, in case of External Battery, from the Unit to separate .
• Wait 5 minutes for DC-Link Capacitors discharge.
4. Disconnect the Utility supply from the separated Unit .
First operated unit
END OF PROCEDURE
All other units of the system
NOTE !
For any further intervention could nearest Service Center .
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7.3.5 Reconnect a Unit to a parallel system
1. Connect the Utility supply on the separated Unit .
• Press mute , to reset alarm and buzzer .
First operated unit
2. Close Q1 (Pos. I) on the separated Unit .
Rectifier starts automatically.
All other units of the system
First operated unit All other units of the system
3. Connect the Battery, in case of External Battery, to the UPS on the separated Unit by closing the external Battery Switch or Fuses .
4. Press inverter on ” ( I ) key on the separated Unit .
After Soft-start of the Inverter , the Inverter connects automatically to the other Units of the parallel system.
• The LCD must display on the main screen the status “LOAD ON INVERTER” .
First operated unit
END OF PROCEDURE
All other units of the system
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7.3.6 Parallel system shutdown (No Load supply)
NOTE !
The Load must be disconnected.
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press total off ” button on any one on the Units .
• Load is disconnected from UPS.
• Rectifier and Inverter are shut down and all output and input Contactors will be opened.
• LED’s, Rectifier, Inverter and Load are OFF.
First operated unit
2. Open Q1 (Pos. O) on all Units .
All other units of the system
First operated unit
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3. Disconnect the Battery, in case of External Battery, from all Units .
• Wait 5 minutes for DC-Link Capacitors discharge .
First operated unit
4. Disconnect the Utility supply from all Units .
• All LED’s are OFF.
All other units of the system
First operated unit
END OF PROCEDURE
All other units of the system
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7.3.7 Restore to normal operation after “ total off”
View of the panel after pressing the button “ total off ” .
•
All Contacts are open.
• Rectifier , Inverter and Static-Switch shutdown.
First operated unit All other units of the system
1. Reset total off ” by pressing and holding the “ total off ” button and then the “ inverter on ”
( I ) key, on any of the Units simultaneously, until Load is supplied from Bypass and the
Rectifiers start.
• System output connects to Bypass Utility .
• Rectifiers start with blinking LED.
• At the end of Soft-start the LED’s remains lit.
• The LCD screen on all Units shows “LOAD ON BYPASS”.
First operated unit All other units of the system
2. Connect the Battery to all Units by closing the external Battery Switches or Fuses, in case of External Battery .
Continue ►
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3 Press ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter and the LCD must display on the main screen the status “LOAD ON INVERTER” .
First operated unit All other units of the system
4. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends)
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER”” .
End of procedure
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7.3.8 Restore to normal operation after EPO (Emergency Power Off)
UPS panel after activation of EPO
(Emergency Power Off) with Utility not available, i.e. complete shutdown of the
UPS and LCD screen OFF.
In this case wait until Utility is again available, then proceed to restart the UPS as described below Points 1 through 3.
UPS panel after activation of EPO (Emergency Power Off) with Utility available .
All Contacts are open. Rectifier , Inverter and Static-Switch shutdown.
First operated unit
1. Reset the EPO (Emergency Power Off) button .
• Press mute , to reset alarm and buzzer .
All other units of the system
First operated unit All other units of the system
2. Press inverter off ” ( O ) key on all Units .
• Rectifiers start with blinking LED .
• After pressing the “ inverter off” key on the last unit of the parallel system, the output of all Units connect to Bypass Utility .
• The LCD screen shows: “LOAD ON BYPASS”.
First operated unit
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3. Connect the Battery to all Units by closing the external Battery Switches or Fuses, in case of External Battery .
4. Press inverter on ” ( I ) key on first Unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter and the LCD must display on the main screen the status “LOAD ON INVERTER” .
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other Units .
(Do not start the next Inverter until the sequence of the previous ends).
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter, Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
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7.4 PROCEDURES FOR PARALLEL SYSTEM WITH COMMON BATTERY
7.4.1 Parallel System start-up
Verify on all Units , with open front door: Switches Q1 and Q2 must be open (Pos. O).
1. Connect the Utility power on all UPS’s.
(In case of separate inputs for Rectifier and Bypass , connect both).
• Power supply starts up. Indicated with flashing alarm and buzzer sounds .
•
•
LED’s as indicated will be lit.
Press mute , to reset alarm and buzzer .
First operated unit All other units of the system
2. Connect the Battery to all Units by closing the external Battery Switch(es) or Fuses .
3. Close Q1 (Pos. I) on all Units .
• Rectifiers start automatically, blinking LED indicates Soft-start.
• At the end of Rectifier Soft-start, the LED remains lit.
• When closing Q1 on the last Unit of the parallel system, the Bypass of all Units connects to the Load .
• LED’s service check turn OFF.
First operated unit
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4. Press inverter on ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends)
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
NOTE !
The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in the case of a Utility Failure .
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7.4.2 Maintenance system shutdown (Load supplied from Q2 on all Units)
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press and hold “ inverter off ” turns OFF .
( O ) key on all Units, until the LED inside the Inverter symbol
At no redundancy, the system will transfer to Utility supply.
First operated unit All other units of the system
(Pos. I) on all Units .
Load is now supplied from Utility in parallel from Bypass and Manual Bypass Q2 of all Units .
First operated unit All other units of the system
(Pos. O) and press “ total off ” button on all Units .
The Bypass of all Units will disconnect and all Rectifiers are shutdown.
First operated unit
4. Disconnect the Battery from all Units .
• Wait 5 minutes for DC-Link Capacitors discharge.
All other units of the system
First operated unit
END OF PROCEDURE
All other units of the system
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7.4.3 From Manual Bypass (Q2) to normal function VFI
Initial status: Load supplied from Manual Bypass .
All Q2 of the system closed .
First operated unit All other units of the system
1. Connect the Battery to all Units by closing the external Battery Switch(es) or Fuses .
2. Close Q1 (Pos. I) on all Units .
The Rectifiers will start automatically and at the closure of Q1 of the last Unit , the Bypass of all Units will be activated.
First operated unit
3. Open Q2 (Pos. O) on all Units .
All other units of the system
First operated unit
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4. Press inverter on ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends)
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
Modifications reserved
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7.4.4 Separate a Unit from the parallel system (System Redundancy)
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press and hold “ inverter off ” ( O ) key on the Unit, to separate, until the LED turns OFF .
Load supplied from Inverter(s) of the other Unit(s) of the parallel system .
First operated unit All other units of the system
2. Open Q1 (Pos. O) and, only when the LED service check is ON, press “ total off ” button on the Unit to separate .
First operated unit
3. Disconnect the Battery from the Unit to separate .
• Wait 5 minutes for DC-Link Capacitors discharge.
4. Disconnect the Utility supply from separated Unit .
All other units of the system
First operated unit
END OF PROCEDURE
All other units of the system
NOTE !
For any further intervention could nearest Service Center .
Modifications reserved
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7.4.5 Reconnect a Unit to a parallel system
1. Connect the Utility supply on the separated Unit .
• Press mute , to reset alarm and buzzer .
First operated unit All other units of the system
2. Connect the Battery to the UPS separated by closing the external Battery Switch or
Fuses.
3. Close Q1 (Pos. I) on the separated Unit .
Rectifier starts automatically.
First operated unit All other units of the system
4. Press inverter on ” ( I ) key on the separated Unit .
After Soft-start of the Inverter , the Inverter connects automatically to the other Units of the parallel system.
First operated unit
END OF PROCEDURE
All other units of the system
Modifications reserved
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7.4.6 Parallel system shutdown (No Load supply)
NOTE !
The Load must be disconnected.
Initial status: Load supplied from all Inverters .
First operated unit All other units of the system
1. Press total off ” button on any one on the units .
• Load is disconnected from UPS.
• Rectifier and Inverter are shut down and all output and input contactors will be opened.
• LED’s, Rectifier, Inverter and Load are OFF.
First operated unit
2. Open Q1 (Pos. O) on all Units .
All other units of the system
First operated unit
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All other units of the system
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3. Disconnect the Battery from all Units .
• Wait 5 minutes for DC-Link Capacitors discharge .
First operated unit
4. Disconnect the Utility supply from all Units .
• All LED’s are OFF.
All other units of the system
First operated unit
END OF PROCEDURE
All other units of the system
Modifications reserved
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7.4.7 Restore to normal operation after “ total off”
View of the panel after pressing the button “ total off ” .
•
All Contacts are open.
• Rectifier , Inverter and Static-Switch shutdown.
First operated unit All other units of the system
1. Reset total off ” by pressing and holding the “ total off ” button and then the “ inverter on ” ( I ) key, on any of the Units simultaneously, until Load is supplied from Bypass and the Rectifiers start.
• System output connects to Bypass Utility .
• Rectifiers start with blinking LED.
• At the end of Soft-start the LED’s remains lit.
• The LCD screen on all Units shows: “LOAD ON BYPASS”.
First operated unit All other units of the system
2. Connect the Battery to all Units by closing the external Battery Switch(es) or Fuses .
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Modifications reserved
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3. Press inverter on ” ( I ) key on first unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
4. Press inverter on ” ( I ) key on all other units .
(Do not start the next Inverter until the sequence of the previous ends)
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter , Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
Modifications reserved
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7.4.8 Restore to normal operation after EPO (Emergency Power Off )
UPS panel after activation of EPO
(Emergency Power Off) with Utility not available, i.e. complete shutdown of the
UPS and LCD screen OFF.
In this case wait until Utility is again available, then proceed to restart the UPS as described below Points 1 through 3.
UPS panel after activation of EPO (Emergency Power Off) with Utility available .
All Contacts are open. Rectifier , Inverter and Static-Switch shutdown.
•
First operated unit
1. Reset the EPO (Emergency Power Off) button .
Press mute , to reset alarm and buzzer .
All other units of the system
First operated unit All other units of the system
2. Connect the Battery to all Units by closing the external Battery Switch(es) or Fuses .
3. Press inverter off ” ( O ) key on all Units .
• Rectifiers start with blinking LED .
• After pressing the “ inverter off” key on the last unit of the parallel system, the output of all Units connect to Bypass Utility .
• The LCD screen shows: “LOAD ON BYPASS”.
First operated unit
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All other units of the system
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4. Press inverter on ” ( I ) key on first Unit .
• Soft-start of Inverter , indicated with blinking LED .
• At the end of Soft-start the LED Inverter remains lit.
• In case of sufficient output power, the output will transfer to Inverter .
• UPS output LED indicates Load on Inverter screen the status “LOAD ON INVERTER” .
and the LCD must display on the main
First operated unit All other units of the system
5. Press inverter on ” ( I ) key on all other Units .
(Do not start the next Inverter until the sequence of the previous ends).
• As soon as the output power of the Inverters is sufficient to supply the Load , the output of the units with running Inverter will transfer to Inverter .
• All LED’s Inverter, Load on Inverter and Load supplied are ON.
First operated unit All other units of the system
The LCD must display on the main screen on all Units the status “LOAD ON INVERTER” .
END OF PROCEDURE
Modifications reserved
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