Samlex America SCC-30AB - Manuel (Page 37)

37
5
ConstruCtion, layout & Controls
LCD Display – Fault Messages
The LCD display (1, Fig. 5.1) indicates the following fault messages when SCC-30AB
stops operating.
DISPLAy DESCRIPTION CAUSE OF FAULT
Alarm: OC
Over Current
Over Current The current exceeds 150% of the rated current (45A)
Alarm: OT
Heat Sink over
temperature
Heat sink temperature exceeds 90°C.
Alarm: CPF00
Link Master error
Display Panel
error
The CPU is not able to exchange data with the
Display Panel.
Alarm: CPF04
DC / DC
LowV
Low Battery Voltage
< 9V for 12V Battery
< 18V for 24V Battery
1. Batteries are discharged below the minimum
acceptable level, or
2. DIP Switch 1 is set for 24V battery but the battery is 12V.
Alarm: CPF09
Heat Sink SR Open
Low operating
temperature
Operating temperature of the unit is below the
specified limit of 0°C or 32°F.
Battery Temperature
Sensor (BTS) displays:
- - - 0°C
Battery temperature
is below 0°C
1. Lower limit of temperature compensation is 0°C.
2. Negative values can not be displayed.
NOTE: See Table 7.1 under Section 7 – Troubleshooting for remedies
Table 5.1. Fault Messages on the LCD Display.
Back of the Unit
The back of the unit (Fig 5.2) has the following input / output connections and DIP
Switches for various settings.
NAME DESCRIPTION
PV+ Connecting terminal for Solar Array Positive
PV– Connecting terminal for Solar Array Negative
Battery + Connecting terminal for Battery cable Positive
Battery – Connecting terminal for Battery cable Negative
DIP Switch 1 ON* Selection of Battery Voltage for 12V system
OFF Selection of Battery Voltage for 24V system
DIP Switch 2,3,4 For programming Battery Type & Charging Algorithm (See Table 6.1)
DIP Switch 5 ON Selection of Auto Equalization
OFF* Selection of Manual Equalization
BTS Battery Temperature Sensor for temperature compensation
*NOTE: Factory preset condition
Table 5.2. Control & Terminal Connections (At the back of the unit).