tecnoelettra ATS-I User Manual

P17/32 Manuale ATS-I Tecnoelettra_IT-EN_rev1.doc

Tecnoelettra srl

Dal 1985

Via Vioni Dimo,5 42016 S.Rocco di Guastalla (RE)

Tel.[phone] – Fax.[phone] P.17/32

Internet :www.tecnoelettra.it E

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mail:[e-mail]

USER MANUAL

ATS

-

I

REV1

P18/32 Manuale ATS-I Tecnoelettra_IT-EN_rev1.doc

Tecnoelettra srl

Dal 1985

Via Vioni Dimo,5 42016 S.Rocco di Guastalla (RE)

Tel.[phone] – Fax.[phone] P.18/32

Internet :www.tecnoelettra.it E

-

mail:[e-mail]

Index

General description.........................................................................................................19

Electrical specifics...........................................................................................................19

Device operative logic .....................................................................................................20

Manual mode...............................................................................................................20

Automatic mode...........................................................................................................21

Alarms .........................................................................................................................21

Display.........................................................................................................................22

Automatic transfer switch procedure mains-generator, generator-mains......................24

Parameters Programmation.........................................................................................26

Phase detection special function..................................................................................27

Mechanical Sizing ...........................................................................................................28

Rear View........................................................................................................................29

Triple phase wiring diagram (230Vac, 400Vac, 440Vac).................................................30

Single phase wiring diagram (230Vac)............................................................................31

P19/32 Manuale ATS-I Tecnoelettra_IT-EN_rev1.doc

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Dal 1985

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Tel.[phone] – Fax.[phone] P.19/32

Internet :www.tecnoelettra.it E

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mail:[e-mail]

General description

ATS-I controller allows an automatic transfer switch commutation between mains and
generator.
In automatic mode, when faulty mains conditions are detected, the board sends a remote
start signal to the engine; when generator is running, the phase sequence is checked, if
voltage and frequency measurements are compatible with programmed values, the
changeover switch is activated towards generator side.
When mains voltage returns back, transfer switch returns on mains side and generator is
stopped.

Electrical specifics

Supply voltage (isolated) 8 ÷ 30 Vdc

Voltage measurements

230Vac 1ph
230Vac 3ph
400Vac 3ph

440Vac 3ph
Frequency measurements 45 ÷ 65 Hz
Generator voltage range 0 ÷ 500 Vac
Mains voltage range 0 ÷ 500 Vac
Measurements precision ± 2%
Input LA 10 ÷ 30 Vdc
Input LM 10 ÷ 30 Vdc
Input LR 0 ÷ 500 Vac
Input LG 0 ÷ 500 Vac
Output START GEN. 5A, 10 ÷ 30 Vdc
Output TLR 5A, 230 Vac
Output TLG 5A, 230 Vac
Maximum reaction time for VF measurements 2 sec.
Maximum phase detection delay 1 sec.

P20/32 Manuale ATS-I Tecnoelettra_IT-EN_rev1.doc

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Device operative logic

There are two operative modes:

- Manual

- Automatic

At the startup, device selects automatically the correct operative mode in accordance with
P13 parameter; “Aut/Man” key allows to change operative mode without restriction.

Front view:

Manual mode

In manual mode all system is controlled by ATS-I operative panel, on the left side of the
display, a label shows the actual operative mode of the device (“ MAN “ or “ AUTO “).
“Start Gen” button allows to start and stop the generator; in case of idle generator, when
“Start Gen” button is pushed, a blinking key icon will appear near “MAN” indicator to signal
a starting phase for generator; when running engine is detected, the key become
permanent. To stop the engine “Start Gen” key must be pushed again ( key icon will
disappear).

To switch contactor status from mains to genset, push “Generator” key: Generator icon
will appear near frequency indicator, this icon blinks until feedback voltage is detected:
from that moment, the icon becomes permanent.
Push “Generator” key a second time to disconnect generator line without switching; push
“Mains” key to switch contactor status from genset to mains, a icon will appear near
frequency indicator, this icon blinks until feedback voltage is detected: from that moment,
the icon becomes permanent.
On display is possible to check mains line voltages, generator line voltages and
frequency.

UP

Aut/Man

Generator

Start Gen

Select Mis

Down

LOCK

Mains

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To read mains voltages, push “Select Mis” key until “L” indication will appear on the left
upper corner; at this point mains voltages will be showed on display. Push “Select Mis”
again and “G” icon will appear; generator line voltages will replace mains measure. If
generator is not running, “OFF” icon will appear which means unavailable genset
measurements.
The commutation is immediate (500ms delay from opening a contactor and closure the
other) and a phase sequence check is performed each switching procedure.
In manual mode, operative generator alarms are not detected, are available only
indicators LA and LM. “M” letter on the right side means single-phase system.

Automatic mode

Automatic mode allows to manage engine and transfer switch completely by software
logic, it’s not possible to start the generator or force switching through operative board,
“AUTO” indication will appear on the low left corner.
However with “Select Mis” is still possible to change displayed measurements from
generator and mains. When controller commands switching on mains or generator,
automatically values visible on display change in accordance.
Each phase is checked separately, so a phase failure will start the automatic intervention
procedure.

Alarms

If mains measurements are selected, in case of alarm will be possible to see one of these
messages on the left side of the display :

- “LOW VOLT” line voltage below programmed threshold ( P3 parameter );

- “HIGH VOLT” line voltage over programmed threshold ( P4 parameter );

- “PH.SEQ.ERR” in case of wrong phase sequence;

Both alarms cause an automatic intervention procedure.
Generator starting procedure begins after a programmable delay (P7 parameter).

With running generator, after another programmable timer ( P8 parameter), the controller
checks voltage status measured on alternator and in case of anomaly, one of these
alarms will be showed on display:

- “ERROR 1” if generator’s phase voltage is out of limits. ( P5, P6 parameters ).

- “ERROR 2” if generator’s frequency is out of limits. ( P12 parameter ).

- “ERROR 3” if generator fails to start.

If generator is working correctly, “ERROR 1” or “ERROR 2” alarms are showed if voltage
or frequency values are out of limits for the duration of programmed time ( P15 parameter)

To reset an alarm on display must be used “Aut/Man” with locked keyboard ( “LOCK”
key). The device returns on mains position and restarts commutation procedure towards
generator. If generator alarm is active and mains voltage returns back, automatically the
commutation will be switched on mains side.