User`s manual
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Starter (STA) Function is activated while cranking the genset and remains on for a delay set by STA.
The minimum value of STA is 1 sec if the oil pressure is bypassed otherwise the minimum value is the
oil pressure bypass delay plus one second (boP+1).
Electric Valve (EVA) Function if present should be defined at Output 2 since the dynamo excitation is
physically connected to this output. To configure the Electric Valve at another output, the dynamo input
should be connected to VBAT or the dynamo shutdown must be disabled (dSd set to N) if dynamo
excitation is not required. Otherwise, the dynamo input should be externally excited.
Utility Contactor (C-U) Function if present should be defined at Output 3. This output is activated when
Utility engages the load and turns off when the load is released.
Genset Contactor (C-G) Function if present should be defined at Output 4. This output is activated
when the genset engages the load and turns off when the load is released.
Alarm (ALA) Function is activated when a genset fault occurs. This output is not activated on
emergency stop since it disables all outputs.
Cut-Off (Cut) Function is activated when the genset should be shut down and it has finished cooling,
when a fault that does not require cooling has occurred and the load was released or when the SURF
module is turned off while the genset was on. When the cut-off output is activated, it will remain on until
the delay set by Cut has elapsed. If the SURF module was turned off, the module can not be turned on
until the cut-off delay has elapsed. The parameter Cut is not visible in the menu unless this output is
activated.
Pre-alarm (PRA) Function is activated on a pre-alarm condition caused by the analog measurements
oil pressure/engine temperature dropping below/exceeding the pre-alarm level set in the parameters’
menu LoP/HTP.
Genset Contactor 2 (CG2) Function is activated five seconds after the first genset contactor is
engaged if the voltage and frequency readings are correct and there is no overload condition. If an
overload occurs, this contactor is disengaged first and the load is measured again, if the overload
condition persists then the contactor G is disengaged. Otherwise, Contactor G remains engaged.
Contactor G2 re-engages when the load decreases.
Dummy Load (dLd) Function is activated when the load remains below the level specified by doN for a
delay set by dod. This output is disengaged when the load current exceeds the level specified by doF.
Parameters doN, dod and doF are not visible unless this output is activated.
Overload (oLd) Function is activated when the load exceeds the value set by oLd and the module is
counting the overload delay set by oLdd or if an overload fault occurs. The output will be turned off if the
load falls below oLd before the delay elapses.
Start Fail (STF) Function is activated when the genset fails to start. This output is turned off when the
start fail error is no longer present. The fault is removed when the Remote Control input is recycled or
when Utility is restored.
Auto Mode (AUT) Function is activated when the mode of operation is Auto. This output is turned off
when the mode of operation is changed from Auto.
5 PROGRAMMABLE INPUTS
SURF has a total of five digital inputs (Input 1 5) that could be programmed to any of these functions: Oil
Pressure Switch (oPS), Engine Temperature Switch (ETS), Oil Temperature Switch (oTS), Low Fuel Level
Normally Open (LFo), Low Fuel Level Normally Closed (LFc) and Lamp Test (LMP). Users can easily change
the function of these inputs from the menu, parameters I1 I5. The user can also disable the input by setting
the corresponding parameter to Not Assigned (N/A).
6 COMMUNICATION PROTOCOLS
SURF supports communication with the electronic control unit (ECU) on the genset using the J1939 CAN Bus
protocol. Three different ECU types are supported: Standard Engine (SE), Volvo Engine (VE) and Perkins
Engine (PE). Parameter ECU in the menu is used to select the ECU type. If the genset does not contain an
ECU, set this parameter to No
. The SURF module reads the following parameters from the CAN bus: oil
pressure (PSI), engine coolant temperature (
o
C), fuel consumption (Liters/hour), engine speed (RPM), engine
total hours of operation (Hr) and the engine total fuel consumption (L).