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BATTERY MODEL “FUEL” GAUGE 906 FEATuRES • All principal circuits are integrated in a single chip for long-life reliability. • A 10-bar LED displays the state of charge successively, bar by bar, from full to empty. • At 70% depth of discharge, a flashing LED signals an “energy reserve” alert. • At 80%, alternately flashing LEDs provides an “empty” status warning. • Model 906 is compact and easily installed in panel cutouts of only 36.8 X 24.1 mm, with less than 35 mm behind panel clearance needed. • Recognizes improperly charged battery. • Keyswitch activated LED display (state-of-charge is monitored as long as 906 is connected to battery). • Two reset methods: Open Circuit Reset-OCR (for units with memory option). Upon reconnection of a battery the gauge will reset if it measures 2.09 volts/cell or higher. High Voltage Reset-HVR Gauge must measure 2.35 volts per cell for 6 continuous minutes during charging. OPTIONS • The Output Signal option causes the voltage on pin 3 to DESCRIPTION drop from 5 to 0 volts at 80% discharge. It can be used Model 906 is an inexpensive, one piece, easy to install battery fuel gauge. It is completely solid state and provides a reliable, accurate, and easy to read display of battery state-of-charge. Model 906 is available in five panel mount packages and a printed circuit board mount- to signal another component or to allow for the disabling of a specified vehicle function, insuring against abusive deep discharge conditions. The Output Signal can also be used to drive the Curtis 1178 Relay Module. • The memory option allows the gauge to recall the stateof-charge whenever the battery is disconnected. • Special models and custom panels are available --please ed module for custom dash panel applications. contact your Curtis sales representative. SPECIFICATIONS APPLICATION System Voltages: 12V, 24V, 36V, 48V This battery fuel gauge features Curtis-patented technology Operating voltage: +/–25% of nominal voltage and is ideal for golf cars, commercial cleaning equipment, Operating temperature: –40°C to +85°C mobility aids, electric bicycles, electric marine motors, Storage temperature: –50°C to +90°C medical devices, and similar equipment. Shock & Vibration: Meets SAE J 1378 CURTIS INSTRUMENTS, INC. 200 KISCO AVENUE MT. KISCO, NY 10549 USA TEL (914) 666-2971 FAX (914) 666-2188 CURTIS INSTRUMENTS, (UK) LTD. 5 UppER pRIORY STREET NORThAMpTON NN1 2pT, ENGLAND TEL 44 (0) 1604-629755 FAX 44 (0) 1604-629876 www.curtisinstruments.com CURTIS INSTRUMENTS INDIA pRIVATE LTD. 1199, GhOLE ROAD pUNE 411004, INDIA TEL 91 (0) 20-5531288 FAX 91 (0) 20-5539192 MODEL 906 28.8 18.0 F/T Case: CASE STYLES/DIMENSIONS: 1 mm 35.5 1.5 2 - 31.2 F/T Case 44.5 3.2 28.8 + 0 23.8 1 22.7 MAX. 4 F/T Case: 53.2 MAX. 3 18.0 Ø3.8 (2X) F case: 1/4” (6.4mm) wide (4X) T case: 3/16” (4.8mm) wide (4X) 2 31.2 MAX. 23.8 4 J Case: 53.2 44.5 35.5 1.5 36.7 1 3.2 - + 0 1 22.7 36.5 3 MAX. 18.0 Ø3.8 (2X) 36.7 44.5 F case: 1/4” (6.4mm) wide (4X) 35.5 T case: 3/16” (4.8mm) wide (4X) J Case: 0 36.5 J Case 31.2 MAX. 53.2 MAX. 18.0 23.8 3.2 35.5 1 31.2 MAX. D Case: 22.7 44.5 1.5 Ø 3.8 (2X) PIN 1 36.7 0 PIN 2 PIN 3 PIN 4 1 23.8 Ø 3.8 (2X) 22.7 32 Max 36.7 1 2 4 3 0 1- + 22 0.15 24 0.3 PIN 1 PIN 2 PIN 3 PIN 4 Thumbnut 4mm32 Max D Case D Case: Washer 4mm "U" Clamp For 0.76-6.35 44.6 0.3 1 2 0 1- + 22 0.15 4 24 0.3 3 Thumbnut 4mm Terminals: Washer 4mm "U" Clamp For 0.76-6.35 1 - Battery +44.6 0.3 Panel Thickness 2 - Battery 3 - Output Signal or Memory Battery (positive) 4 - Key Switch Lens Material: Glass or Plastic Case Material: ABS KJW, Black48 0.3 4 0.2 36.5 Y Case Y Case: 48 0.3 4 0.2 Panel Thickness Terminals: 36.7 1 - Battery + 2 - Battery 3 - Output Signal or Memory Battery (positive) 4 - Key Switch 18.0 Lens Material: Glass or Plastic Case Material: ABS KJW, Black 4.7 0 1 23.8 1234 27.5 36.5 Y Case: 36.7 18.0 40.6 4.7 Z Case: 1234 28.8 18. 0 23.8 4.7 0 1 40.6 27.5 2 Terminals:- 1 Battery +Key Switch 31.2 53.2 MAX. 2 MAX.31.2 MAX. F/T Case: 4 2 J Case:D Case:F/T Case: 18.0 28.8F case: 1/4” (6.4mm) wide (4X) 32 Max 36.5 Thumbnut 4mm 31 Terminals:- 36.7 Battery +Battery 53.2 44.6 0.3 1 53.2 T case: 3/16” (4.8mm) wide (4X)Lens Material: Glass or Plastic Thumbnut 4mm 24 0.3 Glass or PlasticABS KJW, 24 0.3 Black 0 1 10 18.0 "U" Clamp For 0.76-6.35Panel Thickness 2 2 44.5 35.5 148 0.3 0 - 18.0 + 36.744.5 35.5 36.5 31.2 MAX. Y Case: 4 MODEL 36.5 18.0 36.7 Y Case: 3 36.7 906 Ø3.8 (2X) 1 4.7 40.6 4.7 1 0 F case: 1/4” (6.4mm) wide (4X) 23.8 23.8 36.7 1234 STYLES/DIMENSIONS: 22.7 40.6 18.0 1234 CASE 0 23.8 0 1 27.5 27.5 mm 36.5 J Case: 53.2 MAX. 18.0 Z Case Z Case: Z Case: 28.8 18.0 28.8 18.0 36.7 36.7 1 44.5 3.2 35.5 40.6 4.71.5 40.6 4.7 2 31.2 1 0 1 2 23.8 1 0 27.5 22.7 23.8 MAX. 4 23.8 3 4 3 27.5 Ø 3.8 (2X) PIN 1 PIN 2 P Module Module: Module: 36.7 PIN 3 PIN 4 13.0 Min 2.0 +P + 1 2 COMPONENT 1 SIDE D Case: 4 2 14.0 + 4 9.5 + COMPON 3 ENT SIDE + 1 26.70 13.0 Min 2.0 3 + 19.0 Max 32 Max 19.0 Max 19.0 Max 14.0 26.70 9.5 10.50 Max 19.0 Max 22 0.8 .02 Dia. 0.15 10.50 Max 10.50 Max 0 1- + 24 0.3 33.0 Max 2 2.0 + 28 4 3 33.0 Max 28 33.0 Max Note: 4 0.8 .02 Dia. Plac es Thumbnut 4 Places 4mm Washer 4mm 10.50 Max 33.0 Max The 906 modules are supplied with critical components exposed. The user must encase the module to provide adequate protection, depending upon the user's applications and conditions. For proper mechanical support, all four pins should be Note: The 906 modules are supplied with critical components exposed. The user must encase the module to provide adequate soldered to the PC Board.Module face should be a 10mm minimum from the PC Board when flow soldered. protection, depending upon the user's applications and conditions. For proper mechanical support, all four pins should be soldered to the PC Board.Module face should be a 10mm minimum from the PC Board when flow soldered. Lens Material: Glass or Plastic Case Material: ABS KJW, Black Terminals: 1 - Battery + 2 - Battery 3 - Output Signal or Memory Battery (positive) 4 - Key Switch 36.5 MODEL Y Case: ENCODEMENT 18.0 40.6 36.7 906 4.7 F 24 H N A 906 F A 24 O 1 O H N A Case Styles 0 A Reset Level 27.5 Option 1234 Voltage Discharge Profile ArtworkF T 12V (no memory) N=2.04 V/cell @ full to 1.73 V/cell @ empty B=Memory & output option O=Standard Voltage Discharge Profile Artwork J T 24V D J 36V Y D 48V Z P Y H=2.35 V/cell HVR D=Output signal O=Standard Curtis 12VB=2.09 V/cell OCR (no memory) G=1.97 V/cell @ full to 1.75 V/cell @ empty N=2.04 V/cell @ full to 1.73 V/cell @ empty B=Memory & output option W=2.02 V/cell @ full to 1.85 V/cell @ empty 5 0.5V above empty 24V (with memory) B=2.09 V/cell OCR G=1.97 V/cell @ full to 1.75 V/cell @ empty Curtis 0 to 0.1 V at empty 36V W=2.02 V/cell @ full to 1.85 V/cell @ empty Z Case: (with memory) 48V Z 36.7 P 1 28.8 18.0 4.7 2 5 0.5V above empty impedance 0 to 0.1 V at empty M=Memory option 10K impedance M=Memory option 10K NOTE: This gauge is not intended to measure the state of charge of batteries subject to extended 0 1 periods of inactivity since it does not account for self-discharge effects. Consult factory for details. 23.8 4 3 27.5 WA R R A N T Y Two year limited warranty from time of delivery. Module: Specifications subject to change without notice +P MODEL 906 Battery “Fuel” Gage ® Read Instructions Carefully ! 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 malfunction may cause personal injury or material damage, use additional safety measures such as limit switches, guards, etc. Read the Operating Instructions carefully before startup. Note the safety instructions marked with this warning symbol in this manual! TABLE OF CONTENTS 1. Model Encodement 2. Technical Specifications 2.1 Electrical 2.2 Mechanical 2.3 Environmental 3. Installation 4. Operation 5. Troubleshooting 6. Maintenance Page 2 4 4 5 6 7 9 10 1. MODEL ENCODEMENT 906 t uu 906 t vwxyz uu v Case Style* Voltage (volts) Reset Level/Type Y, Z = Rectangular 12 B = 2.09 VPC (OCR) , D = Din 24 2.35 VPC (HVR) w/memory** P = Module (no case) 36 H = 2.35 VPC (HVR) w/o memory F, J, T, TX = Hexagonal 48 (1) (2) (3) * The Model 906 modules (906P) are supplied with critical components exposed. User must encase module to provide adequate protection, depending on application and conditions. For proper mechanical support, all four pins are soldered to the PC board. Module face is a 10-mm minimum from the PC board when flow soldered. ** The “memory” will save the previous “state-of-charge” if the instrument is reconnected to a battery that is not fully charged. (1) VPC = Volts per Cell (2) OCR = Open Circuit Reset (battery swapped) (3) HVR = High Voltage Reset (instrument remains attached to battery while charging) 2 w Discharge Profile Artwork N = 2.04 VPC at Full 1.73 VPC at Empty y G = 1.97 VPC at Full 1.75 VPC at Empty W = 2.02 VPC at Full 1.85 VPC at Empty x Output/Options z A = No Option O = Curtis D = Output Option 5 ±0.5 V above Empty 0-0.1 V at Empty, 10 Kimpedance M = Memory Option only B = Both Memory and Output Option y Output/Options A = No Option 3 2. TECHNICAL SPECIFICATIONS 2.1 Electrical Operating Voltage Operating Range: ±25% of nominal voltage Operating Current Voltage (VDC) Nominal Current (mA) Current (mA) 12 24 36 48 20.3 15.2 15.4 14.9 Maximum 31.0 21.1 21.2 20.0 2.2 Mechanical Display 10-digit, red LED Recommended Panel Cutouts F, J,T, TX, Y, Z Case: 36.8 mm x 24.1 mm +0.3/-.0mm D Case: 45.3 mm x 22.3 mm ±0.1 4 Terminals D, T, TX = 3/16” blade F, Z = /4” blade 1 J, Y = 4-pin Packard Connector equiv. to Delphi PN 15336035 P = solder pins 2.3 Environmental Temperature Operating: –40 to +85°C Storage: –50 to +90°C Humidity 95% RH non-condensing at 38°C Shock and Vibration Meets SAE J 1378 5 3. INSTALLATION Connecting Model 906 Pin 1 = Battery + Connects to the vehicle’s main positive (+) terminal. Use as short a wire as practical. Pin 2 = Battery – Connects to the vehicle’s main negative (–) terminal Use as short a wire as practical. Note: Pins 1 & 2 are connected across the total battery pack. Pin 3 = Output Signal + or No Option Output Signal option: 5 VDC ±0.5 VDC (90 µA current source) above Empty, 0-0.1 VDC at Empty 1 VDC maximum (90 µA sink); No Option: Pin 3 is left open. Pin 4 = Keyswitch Connects to Battery + through the switched terminal of the keyswitch. 6 4. OPERATION 2 1 4 3 Display Only when the battery is properly charged is the right-most LED lit. As the battery’s state-of-charge decreases, successive 2 LEDs light up, only one on at a time. The 2nd-from-left LED flashes, indicating “energy 3 reserve” (70% depth of discharge). The 2 left-most LEDs alternately flash, indicating “empty” 4 (80% depth of discharge). 1 7 Reset OCR (Open Circuit Reset) Upon reconnection of battery, Model 906 will reset at or above proper voltage level. HVR (High Voltage Reset) Model 906 stays connected to battery during charging. Battery must remain at or above proper voltage level for a continuous 6 minutes. 8 5. TROUBLESHOOTING The following checklist should help you troubleshoot any problem with Model 906. Problem Possible Cause Keyswitch On and no display Terminals not connected or improper voltage, Keyswitch not high Stays at Full Model 906 voltage does not match battery voltage Will not reset Model 906 voltage does not match battery voltage or battery not fully charged Not connected directly to battery terminals Reset without charging battery Empty too soon Model 906 voltage does not match battery voltage or terminals not connected directly to battery 9 6. MAINTENANCE Curtis Model 906 series is not field serviceable. Return defective units to your distributor for warranty coverage. 10 Guarantee - Curtis Instruments’ products and/or components are guaranteed against defects in workmanship and material for a period of one year, 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 and/or component. Curtis Instruments, Inc., cannot assume responsibility or accept invoices for unauthorized repairs to its products and/or components, even though defective. In no case will Curtis Instruments’ responsibility extend to products, components or equipment not of its manufacture. Under no circumstances shall Curtis Instruments, Inc., be liable for any special or consequential damages or loss of profits or other damages. Returned goods will not be accepted unless identified by a Curtis Return Material Authorization (RMA). All specifications are subject to change without notice. 26.70 CURTIS INSTRUMENTS, INC. 200 Kisco Avenue, Mt. Kisco, NY 10549 Tel. (914) 666-2971 • FAX (914) 666-2188 www.curtisinst.com 53015 REV E 8/06 50020 REV E 7/07 9.5