Appendix
A:
Specifications
87
CAUTION
Power Supply & Battery Charge Controller
For Class I, Division 2 applications, the Scanner 1141 is powered by a battery charger that is
integrated into the main board with a step-down switching regulator power supply. The integral
charge controller can be firmware-configured to work with either 6V or 12V sealed lead acid (SLA)
batteries. Other battery chemistries (such as nickel cadmium) can be accommodated with a firmware
modification.
The following high-temperature SLA batteries rated for +70°C (+158°F) or higher, enable a Scanner
1141 operating temperature of +60°C:
•
Eagle Picher CF-6V58FR-S9; and CF-12V29FR
•
C&D Technologies Inc. MPS12-33 and MPS12-50
With a standard temperature SLA battery, the 1141 operating temperature is -40°C to +40°C (-40°F
to +104°F).
Class I, Division 2, Integral Battery Charge Controller, 6V or 12V
CAUTION
This caution is only applicable when a battery is connected to terminals 2 & 3 (BATT
+
&
BATT
-
)
The power supply must be current limited to 10 amps maximum and also be short circuit
protected.
All solar panels are short circuit capable and can therefore be used with the 1141, provided they do not
exceed 10 amps.
In normal operation the 1141’s charging module will allow electrical current to flow to the battery
unrestricted. The amount of current flow will vary depending on size of the battery and present charge
level (voltage) of the battery and the voltage of the power supply.
The temperature-compensated battery charge controller on the main board has a two-step charge
control algorithm in firmware. The circuit functions as a “pulse mode” charger (rather than a linear
regulator) for bulk charging and relies on a current-limited power source for proper operation. The
optional 3A constant current/constant voltage smart charger with current monitor is used to ensure
the battery has reached full capacity.
•
Bulk Charging
The Bulk Charging option is a protected 10A, high-side (mosfet) switch that is controlled by the
Scanner 1141’s microcontroller. The microcontroller uses a temperature-corrected, dual-level
charging algorithm which will charge the battery at the maximum current that the solar panel can
provide. Charging continues until the overcharge voltage is reached; at that point, the voltage
Summary of Contents for NUFLO 1141C
Page 1: ...Manual No 30165009 Rev 01 NUFLOTM Scanner 1141 RTU Hardware User Manual ...
Page 28: ...Scanner 1141 Hardware User Manual 28 Figure 3 1 Scanner 1141 main circuit board ...
Page 66: ...Scanner 1141 Hardware User Manual 66 ...
Page 67: ...Chapter 6 Parts List and Order Code 67 Chapter 6 Parts List and Order Code Scanner 1141C ...
Page 68: ...Scanner 1141 Hardware User Manual 68 Scanner 1141L ...
Page 69: ...Chapter 6 Parts List and Order Code 69 Scanner 1141G ...
Page 91: ...Appendix A Specifications 91 Outline Dimensions Scanner 1141C ...
Page 92: ...Scanner 1141 Hardware User Manual 92 Scanner 1141L Front and Side Views ...
Page 94: ...Scanner 1141 Hardware User Manual 94 Scanner 1141G ...
Page 96: ...Scanner 1141 Hardware User Manual 96 Drawing 1 Installation ...
Page 97: ...Appendix B Control Drawings 97 Drawing 2 Power Supply ...
Page 98: ...Scanner 1141 Hardware User Manual 98 Drawing 3 Communications Serial Ports ...
Page 99: ...Appendix B Control Drawings 99 Drawing 4 Status Pulse Inputs Outputs ...
Page 100: ...Scanner 1141 Hardware User Manual 100 Drawing 5 RTD Inputs Analog Inputs Outputs ...
Page 101: ...Appendix B Control Drawings 101 Drawing 6 Analog Outputs ...
Page 102: ...Scanner 1141 Hardware User Manual 102 ...
Page 117: ...117 ...
Page 118: ...118 ...
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