Precision Trading 60 R3.0 operating instructions Operator Manual, Supercharger R3.0

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Operator Manual, Supercharger 60

R3.0

The TIMER provides all the required timing functions related to the charge and discharge durations. Digital time and speed selectors provide the external inputs, while the four digit readout of the CLOCK provides the elapsed time display.

The CURRENT CONTROL interprets the programmed current values and controls the angle of firing of two SCR's to maintain a constant current in accordance to the feedback received from a precision shunt.

Display of current is provided by an independent Digital Ammeter that uses the same shunt used by the CURRENT CONTROL circuit.

Inputs from the TIMER, the SYSTEM MONITOR and the CONTROL SWITCH, determine the operating mode of the CURRENT CONTROL circuit.

The SYSTEM MONITOR provides several safeguarding functions. It compares the measured current against the programmed value and if they differ by more than one ampere, operation is halted and a current malfunction is indicated.

It measures the battery voltage and compares it with the programmed number of cells. From there, it determines during charge if the total voltage exceeds the equivalent of 1.75 V per cell, indicating an Overvoltage condition, or during discharge if the total voltage is below the equivalent of 1 volt per cell, indicating the end of the discharge cycle.

It checks for polarity reversal at voltages as low as .25V, as well as an absolute Overvoltage at 85 volts, both generating a voltage malfunction indication that prevents any further operation of the unit.

It measures the temperature of the discharge heat dissipators and signals an overheat malfunction if the internal temperature exceeds 90oC, as it could be caused by a fan failure or an installation with restricted air flow. It also monitors the temperature of the batteries being charged (via the TEMP-PLATE) and terminates the charge, indicating battery Overtemp, in the event of battery overheating that may lead to thermal runaway.

The POWER REGULATOR provides all regulated voltages and power amplification as required by the various circuits.

The VOLTAGE CONTROL CIRCUIT provides the functions that regulate the charging current in the Constant Voltage (float) mode and in the Peak Voltage mode, transfers from Main to Topping charge on a voltage peak or ends charging on a voltage peak (new feature).

The DIGITAL VOLTMETER provides internal battery voltage readings with resolutions of 0.1V and 0.01V, while a selectable external position allows single cell measurements to a resolution of 0.001V.

Additional protection is provided by a high speed current limiter for the discharge transistor bank, a slow speed current limiter for the charge circuit and a magnetic circuit breaker capable of tripping under fast high current overload conditions.

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Contents Specifications Installation Calibration Table of Figures Introduction and System Description Operator Manual, Supercharger R3.0 Block Diagram Constant Current Charge normal mode Condensed Operating InstructionsConstant Voltage Peak Voltage Charge Discharge Specifications ChargeMaximum Current 50 Amps Minimum Increment 0.1 AMP Overvoltage Protection Overtemp ProtectionOVER/UNDER Current Protection Reverse Polarity ProtectionDischarge Maximum CurrentMinimum Increment Timer Terminal VoltageOverheat Protection Accuracy and Stability Power Failure ProtectionLine Input Voltage Time LimitsDigital Panel Meters VoltmeterControls and Displays SW4 Cell Selector 10 SW6 Voltage Mode Selector11 SW7 Timer Speed Selector SW5 Digital Voltmeter Input SelectorFront Panel 14 DS2A Dual 12 DS1A Reset13 DS1B CYC END 15 DS2B MainAudible Alarm Modes of Operation Constant Current ChargeSingle Rate Constant Voltage Charge Peak Charge Analysis Auto CUT-OFF Deep Cycle Full DischargeOperating Instructions GeneralConstant Current Charge Peak Voltage Charge Discharge Float/Peak Voltage Chart Cell Float Peak Selector VoltageOperating Notes and Precautions Installation Bench SpaceLine Voltage Line Voltage Wiring, 208/230V Required Test Equipment and Accessories Verification of PerformanceVisual Verification Timer Verification Battery Overtemp CUT-OFF Voltage Fault TestReverse Polarity Test Overvoltage CUT-OFFDischarge Voltage CUT-OFF Full Discharge Current TrackingVoltage Control Float Voltage Peak VoltageMeters Circuit Board Adjustments and Calibration CalibrationDigital Meters see Figure Voltmeter Meters Board Adjustments Control Switch Board Adjustments 3.2. R11 Discharge Cell Calibrate3.5.2. R28 LOW Current Calibrate 3.5.3. R25 High Current CalibrateCurrent Control Board Adjustments Control Board as ground reference for voltage measurements Operator Manual, Supercharger R3.0 Voltage Control Board Adjustments Operator Manual, Supercharger R3.0 Circuit Board Sequence Reset Indicator and Timer Display do not Turn on Troubleshooting and RepairsTroubleshooting Burned Resistors in the Discharge HeatsinksVoltage Fault in CV or Peak Fault Lights on and no Audible ALARM. Unit Runs NormallyCurrent Fault in CV Current Tracking is OFF by a Small Constant AmountProcedure Finding a Shorted Discharge TransistorEquipment Required Measuring for a shorted transistor Location of Current Limiters Power Block Diagram Parts Replaceable Modules and PartsCircuit Boards OtherBattery Testing Notes Disclaimer Revision Index Revision Date

60 R3.0 specifications

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