INSTALLATION | Installation of SPLC models
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Doc #OI0003 Part #004122 Rev 04 2010
Expansion Card Warning
Hazardous Voltage - 120 V Battery
Expansion card connects to both Hazardous and
Safety Extra Low Voltage (SELV) wiring. The connector and wiring to J4
(marked in RED) MUST be treated as Hazardous and be physically
segregated from other wiring connected to expansion card.
Protective cover MUST be installed on the Expansion card.
Current Shunt Wiring
Hazardous Voltage - 120 V Battery
Current shunts connections are both internally and externally connected to battery negative
terminal and MUST be treated as Hazardous. Double insulated sense cabling MUST be used.
DC Shunts MUST be installed into the battery negative lead. Ensure that the shunt ONLY measures the
renewable or other DC load current and not any current feeding to or from the inverter.
The sense wires for the externals shunts should be fed through the appropriate gland and terminated to the
removable terminal block on the SP PRO expansion card. The sense cabling should be kept as short as
possible. Remember that these small cables are connected to battery negative and an inadvertent short
circuit with either lead to battery positive would short circuit the battery bank. It is recommended that both
these wires be fused. Fuses should be a sand filed type with suitable DC breaking capacity.
The polarity of these shunt leads is not important if they are set to either “Load” or any of the input selections,
such as “Solar”; however polarity is important when using the shunt in “Dual” mode – that is where the shunt is
used for both input and output measurement to obtain a nett result.
Examples of the shunt wiring are given in Appendices B1 and B2.
Battery Temperature Sensor
Hazardous Voltage - 120 V Battery
Battery temperature sensor is internally connected to battery negative terminal and MUST be
treated as Hazardous. Sensor cable is double insulated.
The battery temperature sensor will be pre-wired to the removable terminal block on the
expansion card and must be installed in thermal contact with the centre of a side of a battery,
insulated from external temperature effects for accurate charging results.
Generator Control Wiring
Generator control wiring should be fed through the appropriate gland and terminated to the SP PRO.
Generator control wiring is not connected to the battery and “CAT5” type cabling or any multi conductor multi
strand cable is suitable. The terminal blocks on the Expansion Card can be plugged in and out of the for ease
of wiring.
Serial Port Connection
The communication cable can be attached to either of the RJ45 sockets marked Serial Port 1 or Serial Port 2
on the edge of the circuit board. Serial communication connections are not connected to the battery.
