Ries Labs Horsepower Computer System ST-2400S User Manual

Horsepower computer system

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Model ST-2400S

Horsepower Computer System

User Manual

In the USA:

Star Test Dynamometer, Inc.

712 Thistlewood Court

Normal, IL 61761

Phone: (309) 826-1484

In Mexico, Central & South America:

Negociaciones Fuentes S.A. DE CV

Av. La Luz 4549 Col. Cortijo del Rio

Monterey, N.L. Mexico 64890

Phone: 81.8349.1416

Manufacturered by:

Ries Labs, Inc.

2275 Raven Road

Farina, IL 62838

Phone: (618) 238-1400

eMail: admin@rieslabs.com

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Summary of Contents for Ries Labs Horsepower Computer System ST-2400S

Page 1 Model ST-2400S Horsepower Computer System User Manual In the USA: Star Test Dynamometer, Inc. 712 Thistlewood Court Normal, IL 61761 Phone: (309) 826-1484 In Mexico, Central & South America: Negociaciones Fuentes S.A. DE CV Av. La Luz 4549 Col. Cortijo del Rio Monterey, N.L.
Page 2: Table Of Contents
Table of Contents Description ---------------------------------------------------------------- 3 Installation ---------------------------------------------------------------- 3 Power Supply --------------------------------------------------------- 4 Operation of the unit from 220-260 VAC 50-60 Hz ----------- 4 Operation ------------------------------------------------------------------ 4 Computer Function Switch ---------------------------------------- 5 System Power LED -------------------------------------------------- 6 Torque Set Switch --------------------------------------------------- 6...
Page 3: Description
Description: The function of the Model 2400S Horsepower Computer is to provide the operator with a continuous digital readout of the RPM, TORQUE, POWER (Horsepower or Kilowatts) and percentage of Torque Rise ( % TORQUE RISE) when properly attached to a compatible dynamometer.
Page 4: Power Supply
The computer may also be operated from a source of 12 to 18 Volts DC such as a small DC power supply or 12 Volt storage battery. If a storage battery is used, be sure that it is properly charged. If the battery voltage is low, the POWER LED of the unit will flash “on”...
Page 5: Computer Function Switch
values are computed and displayed. This process is repeated continuously while the unit is in operation. Computer Function Switch: The computer function switch is used to turn the system power ON/OFF and to control the functional operation of the horsepower computer. The function switch has four positions ( “OFF”, “ZERO”, “CHECK”, and “RUN”).
Page 6 10,000 3750 2856 CHECK readings using Ft.-Lbs. & Horsepower...
Page 7: System Power Led
Load Cell Rating (Ft.-Lbs.) 100 (135.5 N-M) 200 (271 N-M) 500 (677.5 N-M) 1,000 (1355 N-M) 2,000 (2710 N-M) 5,000 (6775 N-M) 10,000 (13550 N-M) CHECK readings using Newton-Meters and Kilowatts The ZERO and CHECK positions of the computer function switch provide quick checks to determine whether the horsepower computer is operating properly.
Page 8: Printer/Computer Interface
The torque set switch is used to set the torque reference which is used to compute the % Torque Rise reading. To set the torque reference, proceed as follows: Run the engine at it rated speed, loaded at rated power or torque output. This represents the 100% torque output condition for the engine.
Page 9: Computer Software For The 2400S Horsepower Computer
When the horsepower computer is used with a companion personal computer, a standard (9 pin) RS-232-C extension cable is used to connect the two computers together. This extension cable is normally 10 feet long, but can be up to 50 feet long (and even longer if special “long range” RS- 232-C extension cables are used).
Page 10 recording can be controlled from the 2400S horsepower computer and / or using the personal computer’s keyboard or mouse. Recorded data can be printed on the PC’s printer and / or can be easily “imported” into Microsoft Excel (or other analysis programs) for further operations such as graphing, etc.
Page 11: Calibration Procedures
3.) The load cell of the dynamometer has been replaced, overloaded, dropped or otherwise mistreated. 4.) The power supply to the unit has been repaired or replaced. 5.) Prior to any measurements that require especially high accuracy. 6.) The instrument has been repaired, exchanged or replaced.
Page 12: Calibration Procedure Notes
the torque arm of the dynamometer to insure that there is no force being applied to the load cell (which would result in an inaccurate zero calibration). Remove the calibration access cover panel and set the calibration mode switch to the ZERO position. Also, be sure that the shunt resistor switch is set to the OFF position.
Page 13: Torque Calibration Notes
positive and negative torque to the unit) and verify that the torque reading returns closely to the same value. A failure here indicates a likely problem with the dynamometer. Have the dynamometer checked by your dealer or dyno service person. 1.3 Make sure that the load has been completely removed from the load cell.
Page 14 dynamometer. The calibration torque produced is equal to the sum of the torque produced by the Torque Test Bar itself plus the torque produced by the test weight(s) – which is equal to the total weight of the test weight(s) times the horizontal distance from the center line of the dyno to the position of the test weights.
Page 15: In Case Of Difficulty
Negociaciones Fuentes S.A. DE CV Av. La Luz 4549 Col. Cortijo del Rio Monterey, N.L. Mexico 64890 You may also return the 2400S Horsepower Computer and its power supply directly to the manufacturer for repair: E-MAIL: ADMIN@RIESLABS.COM Be sure to include a written description of the problems you are having with the unit, the name and phone number of a person to call if we need to discuss your problem with you, and return shipping instructions.
Page 16 Problem Possible causes and remedies No indication on displays. There is likely no power to the unit. Check the power supply Power LED is not lit. to be sure it is plugged in. Check the fuse on the front panel of the unit.
Page 17 RPM gear is not excessive. Check the RPM sensor connector to be sure that it is tight. Check the cable from the RPM pickup to the horsepower computer. Check the power supply to the horsepower computer. Have the horsepower computer checked. Torque readings are Operate the unit using the ZERO and CHECK functions.