Ries Labs Horsepower Computer System ST-2400S manual

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. 22[...]

Table of Contents Description ------------- --------------------------------------- ------------ 3 Installation ---------- ------------------------------------------- ----------- 3 Power Supply ---------- --------------------------------------- -------- 4 Operation of the unit from 220-260 VAC 50-60 Hz ----------- 4 Operation -------------- -------[...]

Description: The function of the Model 2400S Horsepower Co mputer is to provide the operator w ith a continuous digital readout of the RPM, TO RQUE, POWER (Horsepower or Kilowatts) and percentage of Torque Rise ( % TORQUE RISE) when properly attached to a compatible dynamometer. The RPM readout shows the operator the rota tion speed (rotations per [...]

Power Supply: The Model 2400S horsepower computer is normally operated from 110 to 125 VAC (60 Hz) using the outlet mounted pow er supply that is supplied with the unit. The power consumption of the comput er is very low and the unit has a very high tolerance for power supply variati ons, so nearly any standard 115 VAC utility power outlet should p[...]

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 operati on of the horsepower computer. The function switch has four positions ( “OFF”, “ZERO”, “CHECK”, and [...]

10,000 3750 2856 CHECK readings using Ft .-Lbs. & Horsepower 6[...]

Load Cell Rating (Ft.-Lbs.) Torque (N-M) Power (KW) 100 (135.5 N-M) 50.84 21.30 200 (271 N-M) 101.6 42.60 500 (677.5 N-M) 254.2 106.5 1,000 (1355 N-M) 508.4 213.0 2,000 (2710 N-M) 1016 426.0 5,000 (6775 N-M) 2542 1065 10,000 (13550 N-M) 5084 2130 CHECK readings using Newt on-Meters and Kilowatts The ZERO and CHECK positions of the computer function[...]

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, load ed at rated power or torque output. This represents the 100% torque output cond ition for the engine. With the engine running at its rated speed and loa[...]

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 exte nsion cable is normally 10 feet long, but can be up to 50 feet long (and ev en longer if special “long range” RS- 232-C extension cables are used). The print rate and manua[...]

recording can be controlled fr om the 2400S horsepower computer and / or using the personal computer’s keyboard or mouse. Recorded data can be printed on th e PC’s printer and / or can be easily “imported” into Micros oft Excel (or other analysis programs) for further operations such as graphing, etc. Dyno32 is compatible with m ost Windows[...]

2.) The instrument has been moved (re -installed) from one dynamom eter to another. 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 requ ire especially high accuracy. 6.) The instrument has been rep[...]

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 calib ra tion access cover panel and s et the calibration mode switch to the ZERO position. Also, be sure that the shunt resistor switch is set to th e OFF position. At this time note t[...]

positive and negative torque to the u n it) and ver ify that the torque reading returns closely to the same value. A failure he re 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 comp letely removed from the load cell. Disconnect the load cell [...]

dynamometer. The calibration torque produ ced 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 tota l weight of the test weight(s) times the horizontal distance from the center line of the dyno to the position of the test weights. For example, assume th[...]

In Case of Difficulty: The following is a troubleshooting guide that will help you to resolve any problems that may arise. The Model 2400S Horsepower Computer contains no user serviceable parts. If it needs to be repaired you may return the unit to your dealer (who can also assist you with other repair problems such as problem diagnosis , replacem [...]

The following table is useful for you to de termine that cause of any problems that you might be able to fix yourself. Problem Possible causes and remedies No indication on displays. Power LED is not lit. There is likely no power to th e unit. Check the power supply to be sure it is plugged in. Ch eck the fuse on the front panel of the unit. Replac[...]

and the RPM sensor gear. Make sure that they are not loose and that the runout of the 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 inac[...]