chatron miiBIO, Quick Start Manual, Page: 7 / 12

7
Figure 10 - Hazard sign, voltage on photovoltaic panels.
Whenever maintenance work is required, all power
sources (photovoltaic panels, mains, etc.) must be
switched off or disconnected to avoid risk of electric
shock.
Make sure that:
•
Turns off the equipment at the control;
•
Turn off the disconnecting switches, the photovoltaic pa-
nels, the electricity grid, the equipment present;
•
Cover the photovoltaic panels with opaque material (eg
card) and disconnect one of the power cables to ensure
that the circuit is interrupted.
Figure 11 - Warning signal, with installation / maintenance procedure.
7 - Failures
Table 2 - possible Biocoller failures
Faults: Verify: Solution:
Biocooler will
not start
The power switch is set to “ON”
The connections and cables are in
good condition
Check connections,
replace cables
PVs are shaded
Remove elements that
cause shadow
Solar inverter has errors Reset the Inverter
Controller is on Check connections
Biocooler
only works
with network
support
PVs are shaded
Remove elements that
cause shadow
The connections and cables are in
good condition
Check connections,
replace cables
Solar inverter is faulty Reset the Inverter
The status of the contactor (can
be glued)
Contactor Replacement
Biocooler
only works
with PV
The power switch is set to “ON”
Circuit Breaker Check circuit breaker
The status of the contactor (can
be glued)
Contactor Replacement
In case of another type of fault that can not be solved,
please contact CHATRON.
In more specific cases you can refer to Appendix B,
where a brief description of the errors of the solar in-
verter is made.
Appendix A - System Wiring Diagram
The system contains the essential equipment for its
operation and will be powered by two sources of ener-
gy. For a better understanding, electrical schematics of
the power and control circuits are presented.
7
Photovoltaic cell
EM12-SP
+10V AI1 AO1 485+ DI1 DI2 DI3 DI4 DI5 HDI
GND AI2 AO2 485- GND COM CME COM +24V COM
TA TB TC
FM DO1 COM
OFF
ON
JP2 JP6
CME
COM
V
I
JP3 JP4
1
3
2
1
3
2
1
3
2
1
3
2
JP8
1
3
2
+ (R)
- (T)
AC input
Diagram3-2 EM12-SP control circuit and main circuit wiring
+ +
+ +
Photovoltaic Panels
DC
Booster
K1
K2 D1
S1
K2
21
22
+
-
+
-
21
22
K2
K1
K1
R1
Inv. R2
Inv.
D1
(Run Stop
Command)
DI1
(Inverter)
(Always Run)
DI2
(Inverter)
(Low)
DI3
(Inverter)
(High V.)
BT2
COM
COM COM
RC BV RC AV
COM
TA1
TC1
TA2
TB2
Grid
COM (PV System)
Inverter 1
Source Inverter 2
Source
M
Board
Tran.
1 2
3 4
5 6
1 2
3 4
5 6
DC
DC
Solar
Inv. 1 Solar
Inv. 2
Biocooler
400V AC
400V AC
230V AC
+/R W
V
-/TV U
R
S
T
+/R W
V
-/TV U
Power circuit: A1- power circuit
Table No. A1 - description of the elements present in the power circuit
Des. Equipment Function
BT Disconnector 25 A Network support power button
D Breaker Protection
K2 Contactor I = 9A 3P Uc = 24 V Selection of network support
Tran Transf. S = 100VA Is = 0.43A 400V AC to 230VAC converter
K1 Contactor I = 9A 3P Uc = 24 V Selection of photovoltaic panels
K2 Contactor I = 9A 3P Uc = 24 V Power grid selection
PV + Positive from solar panels Positive terminal of photovoltaic panels
PV - Negative from solar panels Negative terminal of photovoltaic panels
DC booster DC booster Tension lift
Inv.Solar1 Solar Inverter Pot. 2,2KW Photovoltaic inverter for power
Inv.Solar2 Solar Inverter Pot. 2,2KW Photovoltaic inverter for motor
M Biocooler motor 380V Biocooler Fan
Board Biocooler board230V Biocooler Control
Circuito de comando do inversor solar 1 (controlo da
parte fotovoltaica).
A2 - solar inverter control circuit 1
7
Photovoltaic cell
EM12-SP
+10V AI1 AO1 485+ DI1 DI2 DI3 DI4 DI5 HDI
GND AI2 AO2 485- GND COM CME COM +24V COM
TA TB TC
FM DO1 COM
OFF
ON
JP2 JP6
CME
COM
V
I
JP3 JP4
1
3
2
1
3
2
1
3
2
1
3
2
JP8
1
3
2
+ (R)
- (T)
AC input
Diagram3-2 EM12-SP control circuit and main circuit wiring
+ +
+ +
Photovoltaic Panels
DC
Booster
K1
K2 D1
S1
K2
21
22
+
-
+
-
21
22
K2 K1
K1
R1
Inv. R2
Inv.
D1
(Run Stop
Command)
DI1
(Inverter)
(Always Run)
DI2
(Inverter)
(Low)
DI3
(Inverter)
(High V.)
BT2
COM
COM COM
RC BV RC AV
COM
TA1
TC1
TA2
TB2
Grid
COM (PV System)
Inverter 1
Source Inverter 2
Source
M
Board
Tran.
1 2
3 4
5 6
1 2
3 4
5 6
DC
DC
Solar
Inv. 1 Solar
Inv. 2
Biocooler
400V AC
400V AC
230V AC
+/R W
V
-/TV U
R
S
T
+/R W
V
-/TV U