Table 3

Troubleshooting guide

 

 

 

 

 

 

 

Fault

LED

Audible

Condition

Response

classification

display

alarm

time

 

 

 

± Bus V > 450 VDC

80 ms

 

 

 

 

 

Bus

C & F

 

± Bus V > 410 VDC

1.5 seconds

Continuous

 

 

± Bus V < 230 VDC

80 ms

fault

LEDs

 

 

 

 

(Abnormal + Bus V)-(-Bus V ) > 40 VDC or

2 minutes

 

 

 

(+Bus V)-(Abnormal -Bus V) > 35 VDC

 

 

 

 

 

 

 

Inverter output power > 276 VAC or

Minimum

Inverter

B & F

Continuous

Inverter output power < 140 VAC

90 ms

fault

LEDs

 

 

Inverter output power short. UPS short circuit

5 cycles

 

 

 

 

fault.

 

 

 

 

 

 

 

 

 

 

 

 

If temperature is > 90°F (32°C) detected

5 seconds

 

 

 

NTC’s temperature on CNTL pcb.

 

 

 

 

Overtemp

A & F

 

 

 

Continuous

If temperature > 65°F (18°C) and < 90°F

 

fault

LEDs

 

(32°C), then transfer to bypass mode, and

4.5 seconds

 

 

 

wait until temperature < 40°F (5°C) then back

 

 

 

 

 

 

 

to inverter mode

 

 

 

 

 

 

Battery

D & F

Continuous

Battery voltage > 15V per unit

6.4 seconds

overvoltage fault

LEDs

 

 

 

Battery mode

E & F

0.5 second

Battery mode load > 105%, < 125%

1 minute

 

 

beep, recurring

Battery mode load > 125%, < 150%

10 seconds

overload alarm

LEDs

every 1 second

 

 

 

 

Battery mode load > 150%

Instantaneous

 

 

 

 

 

Bypass

A, B & F

Continuous

Try to turn unit on (inverter mode). Check

Instantaneous

fault

LEDs

output load for shorts.

 

 

Relay bonded

A, C & F

 

Check inverter output voltage, before inverter

 

Continuous

soft start. If detected inverter output voltage

Instantaneous

on N.O.

LEDs

 

> 85 VAC, then set fault.

 

 

 

 

 

 

 

 

 

 

Inverter mode

 

 

If detected inverter output power I > 70 ADC

 

 

 

and output voltage < 90 VDC, then increase

 

output power

A, D & F

 

 

Continuous

{short_cnt}.

Not specified

short circuit

LEDs

 

If {short_cnt} > 30 any time in period of

 

fault

 

 

 

 

 

96 ms, then set UPS short circuit fault.

 

 

 

 

 

 

 

 

 

 

Line LED

 

 

Line voltage > 276 VAC

48 ms

 

 

 

160 ms or

flash warning

Line voltage < 170 VAC

 

 

 

 

 

 

(48 ms)

Battery

BAT LED

0.5 second

When UPS turn off charger and detected

 

disconnected

beep, recurring

Instantaneous

flashing

battery voltage < 10 VDC per unit

warning

 

every 1 second

 

 

Battery fail

BAT LED

Continuous

When the UPS is in battery test sequence

 

and detected battery voltage < 10 VDC per

Instantaneous

warning

flashing

 

 

unit

 

 

 

 

 

 

 

 

 

 

Bypass mode

All LEDs bright,

 

Bus overvoltage > 400 VDC or

 

bus overvoltage

Continuous

Not specified

or input voltage

buzzer beeping

input voltage > 292 VAC

 

 

too high fault

 

 

 

 

 

 

 

 

 

Input voltage

All LEDs bright,

Continuous

Check input voltage—must be greater than

Not specified

> 292 VAC

buzzer beeping

292 VAC.

 

 

BUS voltage

All LEDs bright,

Continuous

Check the BUS voltage—must be lower than

Not specified

fault

buzzer beeping

242 VDC.

 

 

23

Page 27
Image 27
Emerson GXT5000R-208 Audible Condition Response Classification Display, Time, Bus, Inverter, Overtemp, Overvoltage fault

GXT5000R-208 specifications

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