Siel Green Point 6:20KVA Specifications download pdf (Page 30)

SP121E Rev. 000 Siel S.p.A. Pag. 30 of 42

Issued date: 2005-05-06

GREEN POINT

10.4 Alarm messages

The alarm messages that appear on the first line of the display panel are listed below. The alarm number in

brackets indicates the level of priority.

[1] DISTURBANCES ON THE BY-PASS LINE

This alarm is present whenever there is a disturbance on the by-pass line (such as a voltage peak or harmonic

distortion, whilst the voltage and frequency are correct).

[2] BY-PASS MANUAL, SWMB - ON or cable fault

The manual by-pass switch, or SWMB, has been switched on, preventing the system from returning to normal

operation. The load is powered by the by-pass line input and is not protected by the UPS.

“Cable fault” only refers to those UPSs that have been connected in parallel. The processor has detected an

error in the communications signals exchanged between the UPS systems connected in parallel and has

therefore switched the entire system on to by-pass mode.

[3] BY-PASS VOLT. FAIL or SWIN, FBY OFF

This alarm is present if :

− the voltage on the by-pass line input is incorrect.

− or the SWIN input switch is open.

− or the fuse on the by-pass line is open or failed.

[4] MAIN LINE VOLTAGE FAIL or SWIN OFF

The incoming mains supply voltage is incorrect and the battery is therefore powering the load.

This alarm is present if one of the following conditions occurs:

− the voltage or frequency of the converter supply line are not within acceptable limits

(see general characteristics).

− SWIN switch is open.

[5] PRE-ALARM, LOW VOLTAGE ON BATTERY

This alarm is present if:

− the battery voltage is less than the amount required to provide approximately 5 minutes of back-up (this

time is configurable).

− or the residual back-up time is less than the amount that has been set.

[6] BATTERY DISCHARGED or FBAT OPEN

The UPS has performed a battery test while the mains supply is present and the result is negative.

[7] LOW VOLT. SUPPLY or OVERLOAD [W]

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Siel Green Point 6:20KVA Specifications Page 30