031-331-B1-001, Rev. A (11/2015)
031-331-B1-001, Rev. A (11/2015)
8
9
Circuit Breaker Specifications
Wire Size mm
2
(IEC)
0.75 to 35 mm
2
Wire Gauge (UL)
18 to 2 AWG
Torque (IEC)
2.5 Nm
Torque (UL)
20 in-lb
Comments
Pozidriv #2 Combi head
WARNING: Electrical Hazard
Only qualified personnel should install and wire the system or have access to the inside of the enclosure.
Wiring the System, SmartHarvest SCCM20-100 Charge Controller
The system is shipped with the bulk of the wiring connections already in place. Remove the fixing screw on the underside of the
cover plate to expose the connection terminals and make connections as shown. Verify pre-existing wiring is still in place and
tightened to proper torque settings. Replace the cover plate after inspecting the connections.
1
2
3
4
5
PV module connections
PV module positive (+) to PV breaker
PV module negative (–) to charge controller negative (–)
Charge Controller connections
PV module breaker to charge controller PV positive (+)
Battery positive (+) from charge controller to master DC circuit breaker
Battery negative (–) from charge controller to negative bus bar
6
7
11
6
7
9
10
11
8
Battery string connections
String #1 positive (+)
String #2 positive (+)
String #3 positive (+)
String #1 negative (–)
String #2 negative (–)
String #3 negative (–)
Load connections
Charge controller DC (+) to load output circuit breaker
DC output voltage positive (+)
DC output voltage negative (–)
Ground connection
12
13
14
9
10
8
3
4
5
12
14
A
A
B
C
PV module circuit breaker
DC bus master breaker
Load output circuit breaker
2
3
4
5
12
14
Charge Controller connection detail, including optional battery
sense wiring and remote temperature sensor wiring
Battery temperature sensor (optional);
connect to battery (+) terminal
Battery sense wire; connect to
battery (+) terminal
B
1
2
C
Terminal block torque
0.9 Nm / 8 in-lb
15
15
13
System Startup, SmartHarvest
SCCM20-100
Charge Controller
CAUTION: Hazard to Equipment
Reversed polarity will damage the charge controller.
CAUTION: Hazard to Equipment
Failure to close the battery breakers before closing the PV breaker will damage the charge controller.
IMPORTANT:
The SCCM20-100 requires a minimum load to wake up from sleep mode. Refer to SCCM20-100 manual for details.
Before Startup:
•
Verify the PV breaker is open.
•
Verify the DC bus master breaker and any used battery string breakers are open.
•
Verify the load breaker is open.
Startup Procedure
1. Close the connected battery string breaker(s).
2. Close the DC master breaker. The three LEDs on the front panel of the charge controller will flash once and go out.
3. Close the PV input breaker. The three LEDs on the front panel of the charge controller will flash once, then remain off. After approximately
20 seconds, the green LED will light and be on solid, indicating the presence of PV input. The yellow LED will blink indicating the state of
charge of the battery string.
4. Measure across the Load positive (+) and Load negative (–) terminals on the charge controller. The voltage measured should match the
battery string voltage.
5. Close the Load breaker and measure between the load terminal positive (+) and negative (–). The voltage measured should match the
voltage measured at the charge controller.
A
B
C
A
PV module circuit breaker
B
DC bus master breaker
C
Load output circuit breaker
