Control Versions: 1220.2.875.0, 1220.4.875.0, 2032.404.0

solar tracker controls
Solar configure rtu
GRIDview RTU Configuration

Master Enable: Master Enablement which permits all Control Processes

Enable Tracking: Enables NREL SPA to calculate solar position – used only for debugging

Enable 2 Motor Run: When not enabled, only 1 motor is permitted to run at a time. This allows lower power requirements.

Enable Wind: When enabled, allows tracker to stow in a safe position when wind exceeds a pre-set speed

1 Axis Operation: When enabled only Axis 1 (Altitude) is permitted to run.

Disable Auto/Manual Switch: This temporarily disables the field Auto/Manual Switch to allow GRIDview emergency control

Disable Time (5-40 min.): Configure diablement time. valid range: 5 – 40 minutes

Relay Reverse Delay (sec): Time pause when motor changes direction in seconds

Toolkit Tag Registers
  Toolkit Tag Register
Map
DI   D IN  
X 20 masterEnable << Master Enable
X 21 Track << Enable Tracking
X 52 enable1Axis << 1 Axis Operation
X 53 enable2Motors << Enable 2 Motor Run
X 54 enableWind << Enable Wind
X 65 disableManualSW << Disable Auto/Manual Switch
AI   A IN  
AX 24 motorRevPause << Relay Reverse Delay (sec)
AX 40 disableManualSWtime << Disable Time (5-40 min.)
solar configure axis 1
GRIDview Axis 1 (Altitude) Configuration

Control Type: Altitude 0-90 deg. defined in software

Enable Inclinometer: Analog Inclinometer enabled. Hall Pulses counts are the default setting.

Sensor Type: Reflects Inclinometer / Hall Pulses selection

Enable Solar MEMS: Enables use of Sun Sensor for higher accuracy

Enable MEMS Modbus: Enables Solar MEMS Modbus Transfers

Enable Min LS Calibration: Enables recalibration when Minimum Limit Switch is contacted

PPR 360 deg (Hall): If Hall Pulses input is selected, enter total pulse counts for 360 degree rotation

Inclinometer Source: If Inclinometer input is selected, enter Source based on signal type 1 = 4-20mA 2 = 0-5Volts 3 = 0-10Volts

Inclinometer Scale: If Inclinometer input is selected, enter Scale for full output

Inclinometer Offset: If Inclinometer input is selected, enter offset to zero output

Control Dead Band (deg): Enter desired accuracy for tracking. When the position of the tracker vs. solar position exceeds this the controller will command a move. This value may be fractional in degrees but may cause overshoot and hunting on brush motors or can cause the motor to exceed manufacturer’s duty cycle limits if set too low.

Min Limit Switch Cal (deg): Value in degrees to which tracker will re-calibrate when the minimum Limit Switch is contacted.

Soft Limit Minimum (deg): Value in degrees to which tracker will stop moving (Down). The value should be lower than the minimum Limit Switch so not inpede travel but act as a safty stop if the Limit Switch fails. Valid

Soft Limit Maximum (deg): Value in degrees to which tracker will stop moving (Up). The value can be before or after than the maximum Limit Switch so to act as a safty stop if the Limit Switch fails.

Night Stow Position): Position in degrees where the tracker will move for wind or other saftey purposes. This can be achieved Manually by enabling the stow command or automatically if Wind Safty Stow is set up with an annemometer

Force Pv: Changes the calculated tracker position in degrees if not moving. -99.900 indicates last input was implemented. Valid range must be between soft limits

Toolkit Tag Registers
  Toolkit Tag Register Axis 1
Map
DI   D IN  
X 55 enableAnalog << Enable Inclinometer
X 59 autoCalMin_AL << Enable Min LS Calibration
X 202 enableSSensor_AL << Enable Solar MEMS
X 201 enableSSensor_MB << Enable MEMS Modbus
LI   L IN
 
LI 0 setMotorPPR_01 << PPR 360 deg. (Hall)
AX   A IN
 
AX 20 inclinmrSource << Inclinometer Source
AX 36 stowPosition_AL << Night Stow Position
FI   F IN
 
FI 0 softMax_AL << Soft Limit Maximum (deg)
FI 1 softMin_AL << Soft Limit Minimum (deg)
FI 5 deadBand_AL << Control Dead Band (deg)
FI 10 inclinmtrScale << Inclinometer Scale
FI 11 inclinmtrOffSet << Inclinometer Offset
FI 13 forcePv_AL << Force Pv
FI 19 MinZero_AL << Min Limit Switch Cal (deg)
Solar Configuration Axis 2
GRIDview Axis 2 (Azimuth) Configuration
Control Type: Altitude 0-360 deg. defined in software

Sensor Type: Reflects Hall Pulses selection

Enable Solar MEMS: Enables use of Sun Sensor for higher accuracy

Enable MEMS Modbus: Enables Solar MEMS Modbus Transfers

Enable Min LS Calibration: Enables recalibration when Minimum Limit Switch is contacted

PPR 360 deg (Hall): If Hall Pulses input is selected, enter total pulse counts for 360 degree rotation

Control Dead Band (deg): Enter desired accuracy for tracking. When the position of the tracker vs. solar position exceeds this the controller will command a move. This value may be fractional in degrees but may cause overshoot and hunting on brush motors or can cause the motor to exceed manufacturer’s duty cycle limits if set too low.

Min Limit Switch Cal (deg): Value in degrees to which tracker will re-calibrate when the minimum Limit Switch is contacted.

Soft Limit Minimum (deg): Value in degrees to which tracker will stop moving (Down). The value should be lower than the minimum Limit Switch so not inpede travel but act as a safty stop if the Limit Switch fails. Valid

Soft Limit Maximum (deg): Value in degrees to which tracker will stop moving (Up). The value can be before or after than the maximum Limit Switch so to act as a safty stop if the Limit Switch fails.

Night Stow Position): Position in degrees where the tracker will move for wind or other saftey purposes. This can be achieved Manually by enabling the stow command or automatically if Wind Safty Stow is set up with an annemometer

Force Pv: Changes the calculated tracker position in degrees if not moving. -99.900 indicates last input was implemented. Valid range must be between soft limits

Toolkit Tag Registers
  Toolkit Tag Register Axis 2
Map
DI   D IN  
X 61 autoCalMin_AZ << Enable Min LS Calibration
X 201 enableSSensor_MB << Enable MEMS Modbus
X 203 enableSSensor_AZ << Enable Solar MEMS
LI   L IN
 
LI 1 setMotorPPR_02 << PPR 360 deg. (Hall)
AX   A IN
 
AX 37 stowPosition_AZ << Night Stow Position
FI   F IN
 
FI 2 softMax_AZ << Soft Limit Maximum (deg)
FI 3 softMin_AZ << Soft Limit Minimum (deg)
FI 7 deadBand_AZ << Control Dead Band (deg)
FI 14 forcePv_AZ << Force Pv
FI 21 MinZero_AZ << Min Limit Switch Cal (deg)
solar coordinates
GRIDview Coordinates Configuration
Latitude: Observer latitude (negative south of equator) valid range: -90 to 90 degrees

Longitude: Observer longitude (negative west of Greenwich) valid range: -180 to 180 degrees

Elevation (m): Observer elevation [meters] valid range: -6500000 or higher meters

Temperature (C): Annual average local temperature [degrees Celsius] valid range: -273 to 6000 degrees Celsius

Atmos. Pressure (mb): Annual average local pressure [millibars] valid range: 0 to 5000 millibars

Slope Angle (deg.): Surface slope (measured from the horizontal plane) valid range: -360 to 360 degrees

Refraction: Atmospheric refraction at sunrise and sunset (0.5667 deg is typical) valid range: -5 to 5 degrees

Rotation (deg.): Surface azimuth rotation (measured from south to projection of surface normal on horizontal plane, negative east) valid range: -360 to 360 degrees

Reset Default Location: Returns to factory location (Los Angeles) – all existing data will be lost

Toolkit Tag Registers
  Toolkit Tag Register
Map
FI   F IN  
FI 1700 SPA_ELEV << Set Elevation
FI 1701 SPA_LATITUDE << Set Latitude
FI 1702 SPA_LONGITUDE << Set Longitude
FI 1703 SPA_PAVG << Set Atmos. Pressure (mb)
FI 1704 SPA_REFRACT << Set Atmos. Pressure (mb)
FI 1705 SPA_ROTATION << Set Rotation (deg.)
FI 1706 SPA_SLOPE << Set Slope Angle (deg.)
FI 1707 SPA_TAVG << Set Temperature ©
DI   D IN  
X 66 resetDefaults << Reset Default Location