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WORKING DETAILS AND EXPLANATIONS
The first config step is to set the type of system to be monitored on
P01 “Voltage”
(default = 3PH 400).
If the default values are kept as they are, here is the explanation of the different working situations:
Mains KO
- After the delay set in
P07
“Genset start delay”
(default = 5s):
Contact GEN. RUN = ON
(contact closed)
- After the delay set in
P08
“Delay Genset OK”
(default = 120s) + time set in
P09
“Mains/Genset delay”
(default = 5s):
Contact TM = OFF (contact open)
- After the delay set in
P19
“Commutation delay”
(default = 500ms)
Contact TG = ON
(contact closed, load on Generator)
Genset OK + Mains OK
- After the delay set in
P10
“Genset/Mains delay”
(default = 10s):
Contact TG = OFF (contact open)
- After the delay set in
P19 “Commutation delay”
(default = 500ms)
Contact TM = ON
(contact closed, load on Mains)
- After the delay set in
P11
“Genset off delay”
(default = 30s):
Contact GEN.
RUN
= OFF (contact open)
Mains KO + Genset KO + P18 (OFF):
Contact TM = OFF (contact open)
Contact TG = ON
(contact closed)
Relay ALARM = ON
(contact closed)
ERRORS -
P18 “Genset/Mains forced”
(default = OFF)
If disabled, every time an error occurs, the Genset will be switch-off and the device will remain on Genset source.
If enabled, every time an error occurs, the Genset will be switch-off and the device will automatically commute on
Mains source.
The error sign on the device is not cancelled until the problem on the Gen is not solved.
Then it is possible to press
(SET)
and make the error sign disappear.
Max or Min Mains Voltage Error.
It is indicated as
“HIGH”
(max) o
“LOW”
(min) in the proper section of the display (pag. 3
“ERROR”).
The device starts the changeover sequence:
1) Genset ignition.
2) Genset voltages and frequency check.
3) Changeover from Mains to Genset.
The verification time of voltage and frequency is set in
P08
“Delay Genset OK”
(default = 120s), beyond
this, the display will show error
“Er1/Er2”
.
The changeover will happen only when the Genset parameters will be validated.
On Genset as source, when the parameters are out of the limits, the display will show:
“Er1”:
Genset voltage out of limits, set in
P05
“
Min. Genset voltage
”
(default = -10%) and in
P
06 “Max.
Genset voltage
”
(default = +10%).
“Er2”:
Genset frequency out of limits, set in
P12
“Frequency tolerance”
(default = ±5Hz).
