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MODEL 833
“FUEL” GAGE/HOUR METER
W/“PUSH-
®
Read Instructions Carefully !
!
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Safety Instructions ! This instrument was manufactured and tested according to the applicable technical standards. It complies with all the safety regulations as shipped from the factory. Installation and startup must be performed by skilled personnel. Failure to install and operate the unit in accordance with these instructions may result in damage or injury. If safe operation of the instrument can no longer be ensured, stop and secure it against accidental operation. If instrument failure or m
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TABLE OF CONTENTS Page 1. Model Encodement 2 2. Technical Specifications 2.1 Electrical 4 2.2 Mechanical 5 2.3 Environmental 6 3. Installation 7 4. Operation 14 5. Troubleshooting 16 6. Maintenance 17 !
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1. MODEL ENCODEMENT 833RB vvvv w Voltage Reset level B = 2.09 VPC 0024 2
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xy zzzz Discharge profile Output 316O C = Adjustable J = N.C. holding relay O = Curtis (See Table 3.) Contact rating = logo 3 Amps when continuously closed, 1 Amp when opening ! 3
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2. TECHNICAL SPECIFICATIONS ! 2.1 Electrical Operating Range ± 25% of nominal voltage Operating Current Voltage (volts) Nominal Current (mA) Maximum Current (mA) 24 18 28 Relay Contact Ratings Voltage: 200 VDC (max) Current: 1 ADC (max) (3 ADC max when continuously closed) Power: 50 W (max) 4
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2.2 Mechanical Display ! Battery state-of-charge: 10-bar, tri-color LED Hour Meter: 6-digit LCD, 5mm high Resolution Hour Meter 99,999.9 Hours Hardware Kit Mounting bracket, thumbnuts or M4 Hex nuts (2), lock washers (2), mating connector Molex No. 39-01-2085, w/pins No. 39-00-0039, no connectors in bulk shipments. Panel Cutout 1 52mm, 2 / ” diameter 16 5
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2.3 Environmental ! Temperature Operating: -40°C to +65°C (Standard Mode) -10° C to +65° C (Push-to-read Mode) Storage: -50°C to +90°C Humidity 95% RH (Non Condensing) at 38°C Shock & Vibration 2.2 G, 20-200 Hz; 20 minute period; X,Y,Z, 13 cycles each Enclosure IP65 (face) 6
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3. INSTALLATION The Model 833 Installation Kit includes a ! pre-assembled mating connector with 5” terminated wires. Ask for Curtis Part Number 15369002. The Model 833 fits into a dash-panel cutout measuring 1 2 / ” (52 mm). 16 Terminal Assignment (see diagram on page 13) Pin 8 = Battery + Pin 8 to battery + 7
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Pin 5 = Battery – Connect to battery ground as close to battery ! as possible. Pin 2 = Keyswitch The keyswitch turns on and off the LED display of the battery discharge indicator. Monitoring of the battery continues when Pin 2 is turned off and the display is not lit. The hour meter display is unaffected by Pin 2, although it cannot accumulate more time as long as the keyswitch pin is not energized. The control input HRM (+) is enabled by the keyswitch. Pin 2 is connected to the vehicle’
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Pin 3 = Relay (+) Pin 3 connects in series with the lift coil circuit (or the circuit to be switched at empty). For holding relay (J), Pin 3 must be electrically closer to battery + than Pin 4 Pin 4 = Relay (–) Pin 4 also connects in series with the circuit to be switched at empty. 9
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Table 1. Hour Meter Control Lines & Impedance Specifications Model Low Voltage High Voltage Min. Impedance Maximum Minimum HRM+ HRM- 24 VDC 5.0 VDC 15.0 VDC 90 k Ω 30 kΩ Table 2. Hour Meter Control Logic Key HRM HRM HRM Hour Icon switch (+) (+) (+) meter Off x x x Display onlySteady On V H xx On Flashing On x V H xOnFlashing On x V H x On Flashing On V V V L L L Display Flashing or open or open or open only ! 10
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NOTE: Fuses and Wires Regulations may require that the Model 833 be ! fused. If installing a fuse, use a 10A fuse wired with 1.5mm or equivalent wire. The voltage drop across the fuse, its holder, and connectors must be less than 1% of the nominal system voltage. Discharge Adjustments Table 3 lists the voltages per cell under load that correspond to an empty indication on the gauge (lockout point). Table 3. Discharge Adjustment Settings Setting Volt/Cell at Empty K 1.57 L 1.63 M 1.
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! CURTIS Model 833 Rear View 12
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Connections for Typical Model 833 Application Vehicle system voltage is the higher of the two operating ! voltages of a dual voltage unit. Hour meter measures “keyswitch on” time. 13
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4. OPERATION Display The Curtis Model 833 combines in one instrument a completely solid state LED battery state-of-charge indicator, an LCD hour meter, and lift lockout. Only when battery is properly charged is right most LED (1) lit. As battery’s state-of-charge decreases, successive LEDs light up, one at a time. 2nd from left LED flashes indicating “energy reserve” (70% discharged). The left most 2 LEDs flash indicating “empty” (80% depth of dis- charge). At this point, lift lockout o
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Push-to-read When the front button is depressed, the LCD will display the hour meter reading for 6 seconds min. The hour meter will not accumulate time during this operation. Reset type/level (after or during recharge) CTR = Charge Tracking Reset If the gage is connected to the battery during recharge, the gage will track the battery charge level. OCR = Open Circuit Reset If the gage is disconnected from the battery during recharge, the gage will retain the last indication. It will advance t
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5. Troubleshooting The following checklist should help you to troubleshoot any problems with the instrument. Problem Possible Causes No display Terminals not connected or improper voltage Stays at FULL Instrument voltage does not match battery voltage, B+ connected to the wrong terminal Will not reset Instrument voltage does not match battery voltage, or battery not fully charged Resets w/o charging battery Not connected directly to battery terminals EMPTY too soon B+ connected to wrong t
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6. Maintenance Model 833 Series is not serviceable in the field. Units returned to the factory within the warranty period (see inside backcover) will be replaced without charge. 17
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Guarantee - Curtis Instruments’ products and/or components are guaranteed against defects in workmanship and material for a period of two years, or as defined in the individual product literature, from date of shipment from our factory, when applied in a proper application within specified ratings. This guarantee is limited to repair or replacement F.O.B. our factory. There is no further warranty or implied representation, guarantee, promise or agreement as to any Curtis Instruments product an
