CC UPS

Question 1

Q1 Breaker

Answer 1

Input isolation circuit breaker, used to isolate the UPS from the main AC input (mains 1) and provide input current protection.

Question 2

QF1 Breaker

Answer 2

Battery disconnect circuit breaker, external to the UPS, used to disconnect the battery from the UPS.
QF1 provides isolation and protection between the UPS and its battery system.

Question 3

Q4S Breaker

Answer 3

Bypass input circuit breaker; it is used to isolate the UPS from the bypass input (mains 2) source and provide back-feed protection

Question 4

Q3BP

Answer 4

Maintenance bypass circuit breaker, used to supply the attached load via the bypass source while the UPS is being serviced.

Question 5

Power Flow

Normal Operation

Answer 5

During normal operation, power flows from the main AC input source (mains 1) into the UPS rectifier/battery charger section. The rectifier/battery charger converts the AC voltage to DC, maintains the charge of the battery, and feeds the DC power to the inverter. The inverter regenerates AC voltage, and supplies the attached load.

Question 6

Power Flow

On Battery Operation

Answer 6

If the main AC input source (mains 1) fails or goes out of tolerance, the charger stops. Power flows from the battery to the UPS inverter, which in turn supplies the attached load. When the main AC input source (mains 1) returns, the charger restarts automatically and the UPS resumes its normal operation. .
If the battery becomes depleted before the main AC input source (mains 1) returns, the inverter stops and the attached load is transferred to the bypass AC input source (mains 2) if it is available.

Question 7

Front Panel

EPO Button

Answer 7

On the left side of the front panel, an emergency power off (EPO) pushbutton is
provided, with a protective cover to guard against inadvertent operation. This
pushbutton, when activated, disconnects the main AC input (mains 1), bypass AC
input (mains 2), and battery power to the UPS, and disconnects output power to the
attached load.

Question 8

Front Panel

1

Answer 8

(item 1) The audible alarm provides an audible warning to the operator by sounding
a pulsed “beep” when any of the following conditions occur:
◗ Load transferred to bypass (mains 2)
◗ Load supplied via battery
◗ Operating problem
During minor alarm conditions, the alarm sounds at a slow rate and a low sound
level. When the battery approaches the low-voltage shutdown level, the alarm
sounds louder and at an increased rate. If the inverter shuts down, the alarm
sounds loudly and continuously.
An audible alarm reset is located on the hidden panel. See Figure 1-7. Pressing it
will silence the alarm. Should a higher-level alarm condition occur after the reset
has been activated, the audible alarm will sound the new alarm condition.

Question 9

Front Panel

2

Answer 9

(item 2 ) This red LED turns on when any of these conditions occur:
◗ The load is no longer protected following an inverter shutdown,
or the opening of the isolation circuit breaker (Q5N).
◗ The battery circuit breaker QF1 is open, making battery power
unavailable.

Question 10

Front Panel

3

Answer 10

(item 3) This orange LED turns on when an operating problem exists, such as fan
failure; static switch power supply fault; battery temperature fault;
overload fault; or bypass AC input (mains 2) out of tolerance. The UPS
continues to protect the attached load.

Question 11

Front Panel

4

Answer 11

(item 4) This orange LED turns on to indicate that the attached load is
being partially or completely supplied by the battery. When the main AC
input (mains 1) fails or is outside tolerance, stored battery energy is
supplied to the inverter, which in turn supplies the load.

Question 12

Front Panel

5

Answer 12

(item 5) This green LED indicates that the attached load is supplied by
the inverter and protected by the battery. During normal operation, this
LED is the only one that is on.

Question 13

Front Panel

6

Answer 13

(item 6) This green pushbutton is used to start the inverter. When it is pushed, the
green “load protected” LED flashes for three seconds, indicating that the start
command has been received. When the inverter has synchronized with the bypass
AC input (mains 2) source, the static switch transfers the load to the inverter output.
If the inverter cannot synchronize to the bypass AC input (mains 2) source, the load
must be forced to transfer using the hidden panel (see section 2.11, Forced
Transfers).

Question 14

Front Panel

7

Answer 14

(item 7) This gray pushbutton is used to stop the inverter. When it is pressed for 3
seconds, the inverter stops and the load is transferred to the bypass AC input (mains
2) source. If the uninterrupted transfer conditions are not met, this pushbutton has
no effect and the inverter can be stopped only from the hidden panel (see Section
2.12, Forced Transfers).

Question 15

What is this?

Answer 15

Alphanumeric Display and Controls

Question 16

Settings Button

Answer 16

This pushbutton is used to select the display language and adjust the LCD screen
contrast for optimal viewing.

Question 17

Selection Button

Answer 17

Depending on the displayed message, the “˘” key may serve to indicate selection,
negative response, and other functions.

Question 18

Voltage Button

Answer 18

This pushbutton provides access to voltage measurements, including:
◗ Main AC input (mains 1) phase-to-phase voltage
◗ Bypass AC input (mains 2) phase-to-neutral and phase-to-phase voltage
◗ Inverter output phase-to-neutral and phase-to-phase voltage
◗ Load phase-to-neutral and phase-to-phase voltage

Question 19

Current Button

Answer 19

This pushbutton provides access to current measurements, including:
◗ Main AC input (mains 1) current
◗ Bypass AC input (mains 2) current
◗ Inverter output current
◗ Load current
◗ Percent current drawn by the load relative to UPS rating
◗ Crest factor per phase

Question 20

Power/Freq. Button

Answer 20

This pushbutton provides access to power and frequency measurements, including:
◗ Main AC input (mains 1) frequency
◗ Bypass AC input (mains 2) frequency
◗ Inverter frequency
◗ Power drawn by the load (in kW and kVA)
◗ Load power factor

Question 21

Battery Button

Answer 21

This pushbutton provides access to battery measurements, including:
◗ Battery voltage
◗ Battery current
◗ Battery ambient temperature
◗ Battery time available
◗ Battery time remaining

Question 22

Alarm Button

Answer 22

This pushbutton is used to display current alarms, or to display stored alarms.
If the alarm key is pressed repeatedly, the display will scroll through the stored alarm
record, returning to the latest after the oldest is shown.
If a blinking character (!) appears in the display, the user may press the Alarm
pushbutton again to scroll through additional useful information.

Question 23

Hidden Panel Indicators

Answer 23

There are 14 led indicators and additional status pushbottons.

Question 24

A

Answer 24

Emergency Shutdown

This red LED indicates that the emergency power off (EPO) or remote emergency power off (REPO) has been activated.

Question 25

B

Answer 25

Rectifier / Charger is On ## Footnote This green LED indicates that the rectifier/battery charger is on.

Question 26

C

Answer 26

Rectifier / Charger Fault ## Footnote This red LED indicates an alarm condition within the rectifier/battery charger. it indicates the presence of one of the following fault conditions: ◗ Input circuit breaker Q1 open ◗ Input power protection fuse blown ◗ Rectifier/battery charger over-temperature ◗ Battery charge overcurrent ◗ Battery overvoltage ◗ Rectifier/battery charger control board fault ◗ Power supply board fault

Question 27

D

Answer 27

Main AC input (mains 1) outside tolerance This orange LED indicates that the main AC input (mains 1) source is outside tolerance (voltage and/or frequency too high or too low).

Question 28

E

Answer 28

Reserved for future use.

Question 29

F

Answer 29

Battery Temperature Outside Tolorence ## Footnote This orange LED indicates that the ambient temperature of the battery is too high or too low.

Question 30

G

Answer 30

Battery Charging ## Footnote This orange LED indicates that the battery is being recharged. This LED functions only when the connected battery is of the vented lead-acid type (sealed lead-acid batteries will not activate this signal).

Question 31

H

Answer 31

Inverter Fault ## Footnote This red LED indicates an alarm condition in the inverter, which may be one or more of the following conditions: ◗ Inverter shutdown due to output voltage out of tolerance ◗ Inverter output protection fuse blown ◗ Inverter leg fault ◗ Inverter output transformer over-temperature ◗ Inverter leg over-temperature ◗ Internal clock fault ◗ Inverter control board fault ◗ Power supply board fault

Question 32

I

Answer 32

Battery Discharged ## Footnote This orange LED indicates that the battery has reached the end of its autonomy, shutting down the inverter.

Question 33

J

Answer 33

Inverter Desynchronized ## Footnote This orange LED indicates that the inverter is not synchronized with the bypass AC input (mains 2).

Question 34

K

Answer 34

Transfer Fault ## Footnote This red LED indicates a transfer fault, which may be one or more of the following conditions: ◗ Inverter output static switch fault ◗ Static switch over-temperature ◗ Static switch power supply fault ◗ Transfer control board fault ◗ Power supply board fault

Question 35

L

Answer 35

Overload ## Footnote This orange LED indicates an alarm condition resulting from one or more of the following conditions: ◗ Inverter current above rating ◗ Output current above rating ◗ Inverter and/or static switch shutdown due to excessive load current

Question 36

M

Answer 36

Bypass AC input (mains 2) outside tolerance ## Footnote This orange LED indicates that the bypass AC input (mains 2) voltage and/or frequency are too high or too low.

Question 37

N

Answer 37

Maintenance Position ## Footnote This orange LED indicates that circuit breakers QF1, Q4S, Q5N, or Q3BP are set to the maintenance position. The UPS is not available for load protection.

Question 38

Test Connector

Answer 38

(port) This 9-pin connector is reserved for service. It is used to connect the cabinet to a computer, allowing system calibration, personalization, and computer-aided diagnostics

Question 39

Clear Fault Log

Answer 39

Pressing this pushbutton clears the alarms stored in memory, allowing the unit to restart. Memorized alarms cannot be cleared until the condition causing the alarm has been corrected

Question 40

Audible Alarm Reset

Answer 40

Pressing this pushbutton stops the audible alarm. Should a new fault condition at a higher alarm level occur, the alarm will sound again.

Question 41

Battery Charge Cycle Button 1

Answer 41

(pushbutton #1) Pressing this pushbutton begins a battery charging cycle. After the cycle is complete, the rectifier/battery charger returns to float charge levels on the battery. The battery charge cycle is not applicable to sealed lead-acid battery installations

Question 42

Return to Float Voltage Button 2

Answer 42

pushbutton #2) This pushbutton can be used during a battery charge cycle to force the rectifier/battery charger back to the float voltage level.

Question 43

LOW LEVEL ALARM UPS OK !

Answer 43

This message indicates that a problem requiring action has occurred. The load is still supplied by the inverter. The problem is listed in the secondary alarm message (see below), as indicated by the flashing exclamation mark (!). The alarm message may be viewed by pressing the “alarm” pushbutton (!)

Question 44

UPS INPUT FAILURE LOAD ON BATTERY !

Answer 44

This message indicates that the main AC input (mains 1) has failed or is outside of tolerance, and power to the inverter is being supplied from the UPS battery system. The load is still supplied via the inverter.

Question 45

REMAINING BAT. TIME \_\_ MN %KW LOAD = \_\_

Answer 45

This message is automatically displayed every five seconds when the UPS is on battery. It alternates with the previous message. The message provides an estimate of the available remaining time on battery, based on the percentage of full rated load being supplied, the type of battery, the battery temperature, and the battery age.

Question 46

UPS LOW BATTERY SHUTDOWN IMMINENT !

Answer 46

This message indicates that the batteries have reached the “low battery shutdown” warning level. The user must take steps to prepare the load for shutdown (load shedding, file saving and computer shutdown, etc.). This message replaces the previous two messages when the batteries are nearly depleted. When this message appears, there are only a few minutes of battery back-up time remaining.

Question 47

UPS ALARM CALL SERVICE !

Answer 47

This indicates that the battery disconnect circuit breaker QF1 has been open or the inverter has stopped and that service is required. The problem is listed in the secondary alarm message (see below), as indicated by the flashing exclamation mark (!). The secondary alarm message may be viewed by pressing the “alarm” pushbutton (!).

Question 48

EMERGENCY SHUTDOWN REPO ON !

Answer 48

This message indicates that the UPS has been shut down because a remote emergency power off (REPO) pushbutton has been pressed and is still closed.

Question 49

LOAD ON BYPASS !

Answer 49

This message indicates that the load has been transferred to the bypass AC input (mains 2) source. The load is no longer protected.

Question 50

BYPASS PROBLEM CHECK FREQUENCY !

Answer 50

This message indicates that the bypass AC input (mains 2) source is out of frequency tolerance. The inverter has switched to free-running mode. Transfer of the load from the inverter output to the bypass AC input source requires an interruption of power to the load.

Question 51

BYPASS PROBLEM CHECK VOLTAGE !

Answer 51

This message indicates that the bypass AC input (mains 2) source is out of voltage tolerance. The inverter has switched to free-running mode. Transfer of the load from the inverter output to the bypass AC input source requires an interruption of power to the load.

Question 52

INDEPENDENT INVERTER FREQ. COMMAND ON !

Answer 52

This message indicates that the inverter has been set to free-running mode. The inverter is not synchronized to the bypass AC input (mains 2) power source. Transfer of the load from the inverter output to the bypass AC input source requires an interruption of power to the load.

Question 53

BYPASS TRANSFER LOCKOUT COMMAND ON !

Answer 53

This message indicates that the UPS has been set not to transfer from the inverter to the bypass AC input (mains 2) source. In the event of an inverter shutdown, the load will be disconnected.

Question 54

BATTERY CABINET OVERTEMP. !

Answer 54

This message indicates that the ambient temperature of the battery is out of tolerance.

Question 55

UPS INPUT PROBLEM CHECK FREQUENCY !

Answer 55

This message indicates that the main AC input (mains 1) frequency is out of tolerance. The rectifier/battery charger has shut down and the inverter is operating from its battery source.

Question 56

UPS INPUT PROBLEM CHECK VOLTAGE !

Answer 56

This message indicates that the main AC input (mains 1) voltage is out of tolerance. the rectifier/battery charger has shut down and the inverter is operating from its battery source.

Question 57

CHARGER SHUTDOWN COMMAND ON !

Answer 57

This message indicates that the rectifier/battery charger has been instructed to shut down, for example during progressive (stepped) transfer to a motor-generator set.

Question 58

INPUT KVA LIMITED COMMAND ON !

Answer 58

This message indicates that the rectifier/battery charger has been instructed to limit the power drawn from the main AC input (mains 1) source. This condition occurs, for example, when the load is being supplied by an undersized motor-generator set; the UPS battery source is called upon to make up the difference

Question 59

BATTERY CURRENT LIMIT COMMAND ON !

Answer 59

This message indicates that the rectifier/battery charger has been instructed to limit the charge current to the battery. Normal charge current to the battery will be supplied when the command is released. This condition occurs, for example, when the load is being supplied by an undersized motor-generator set.

Question 60

QF1 BATTERY BREAKER OPEN !

Answer 60

This message indicates that the battery circuit breaker QF1 has been opened or has tripped. the load is no longer protected, since battery power is unavailable.

Question 61

LOW BATTERY . . . !

Answer 61

This message indicates that the inverter has shut down, due to depletion of the batterys' stored energy.

Question 62

CHARGER OFF . . . !

Answer 62

This message indicates that the rectifier/battery charger has shut down.

Question 63

CHARGER FAULT CALL SERVICE !

Answer 63

This message indicates that a fault has occurred in the rectifier/battery charger, and that service is required.

Question 64

Q1 UPS INPUT CB OPEN !

Answer 64

This message indicates that the input isolation circuit breaker is open or has tripped. It must be closed for rectifier/battery charger start-up.

Question 65

INVERTER OVERLOAD CHECK P.F. AND KW

Answer 65

This message indicates that the inverter is in an overload condition, usually due to excessive real power (kW) being drawn by the load. The flashing “KW” indicates that the operator should check the load real power. The inverter will keep supplying the load for a certain amount of time depending on the overload level.

Question 66

INVERTER FAULT CALL SERVICE !

Answer 66

This message indicates that a fault has occurred in the inverter, and that service is required.

Question 67

INVERTER SHUTDOWN OVERLOAD \> I MAX!

Answer 67

This message indicates that an overload greater than 1.5 times the full power rating of the inverter has occurred, and that the inverter has shut down.

Question 68

INVERTER SHUTDOWN THERMAL OVERLOAD A

Answer 68

This message indicates that an overload below 1.5 times the full power rating of the inverter has occurred and that the inverter has shut down. The flashing “A” indicates that the operator should check the load current.

Question 69

I LOAD \> IN CHECK LOAD A

Answer 69

This message indicates that the load power being drawn is greater than the UPS full load rating. The flashing “A” indicates that the operator should check the load current. The inverter or static switch will keep supplying the load for a certain amount of time depending on the overload level.

Question 70

TRANSFER FAULT CALL SERVICE !

Answer 70

This message indicates that a fault has occurred that affects the transfer of the load between the inverter and the bypass source. Service is required.

Question 71

PH OUT OF TOLERANCE !

Answer 71

This message indicates that there is an out of tolerance condition between the inverter and bypass AC input (mains 2) sources. Transfer of the load between the inverter and bypass AC input will result in an interruption of load power.

Question 72

Q4S BYPASS SWITCH OPEN !

Answer 72

This message indicates that the circuit breaker Q4S is open. Transfer of the load from the inverter to the bypass source is not possible.

Question 73

Q5N UPS OUTPUT ISOL. SWITCH OPEN !

Answer 73

This message indicates that the optional UPS isolation circuit breaker Q5N is open. The load is not supplied unless the maintenance bypass circuit breaker Q3BP is closed.

Question 74

Q3BP MAINT. BYPASS SWITCH CLOSED !

Answer 74

This message indicates that the optional maintenance bypass circuit breaker Q3BP is closed. The system is set to maintenance bypass, and the load is supplied by the bypass AC input source (mains 2).

Question 75

STATIC SWITCH O.L. EMERGENCY OFF !

Answer 75

This message indicates that the static switch has shut down following an overload condition, disconnecting the load.

Question 76

DISPLAY NUMBER 1 UNAVAILABLE

Answer 76

This message indicates that the alphanumeric display is not operating properly. The status of the UPS is still correctly indicated by the LEDs of the visible panel and the hidden panel, see section 1.5 Single Module Indicators and Controls.

Question 77

HARMONIC FILTER FUSE FAILED

Answer 77

This message indicates that the fuse(s) protecting the input harmonic filter has opened and that service is required. The status of the UPS is still correctly indicated by the LEDs of the visible panel. Refer to section 1.5 Single Module Indicators and Controls for front and hidden panel indicators and controls.