POWER SUPPLIES FEATURES ▪ For use with Magtrol WB Eddy-Current and PB Powder Brake Dynamometers ▪ Controlled current supply, with overvoltage factor > 5 ▪ Analog input for current set-point ▪ Selection of nominal current ▪ Control by digital inputs/outputs ▪ General alarm provided by relay ▪ 2 alarm outputs (temperature and electrical circuit) ▪ Available in either 115 or 230 V  C A Fig. 1: DES Series | Power Supply in its cast-aluminum housing DESCRIPTION DES Series Power Supplies are specially designed for the full range of Magtrol’s Eddy-current and Powder brake dynamometers with the design goal providing the best response time. The DES Series supplies are packaged in an industrial housing made of cast aluminum. This offers superior protection against radiated emissions in order to avoid any disruption of the surrounding electronics modules. This housing must be installed directly on the test bench, next to the brake, as close as possible. The DES Series supplies can be controlled by digital signals and analog set point coming from peripheral electronics. The DSP  7000 Dynamometer Controller has been designed to work with the DES Series. CONTROL The Power supply can be switched ON by remote control. The SATND-BY signal enables the output current to be delivered. This excitation current is controlled by a set-point in the 0-10 V DC range. The nominal value of the excitation current is set by internal resistors. There are two discrete outputs for alarms (open collector). The first is the "Temperature Alarm". It will indicate if the cooling water of the Dynamometer or the inner temperature of the DES  Series are out of limits. The second is the "Electrical Alarm". It occurs when an over current or a short circuit is detected. The output current is immediately turned OFF and latched while the General Alarm Relay is set under its Alarm position. A low state for 200 ms of the Stand-by signal resets the latch. For applications with TANDEM dynanometers, the DES Series units also control the power supply of the electromagnetic clutch. SUPPLY VOLTAGE The main supply voltage of the DES  Series is in the 115 / 230 V  C - 50 / 60 Hz range. No selection is required. A The DES  410 power supply features a galvanic insulation between the main circuit and the dynamometer power. The DES 411 power supply does not have galvanic separation. For safety reasons, the DES Series case has to be grounded and the use of a ground fault current circuit breaker is recommended. © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications w

DES SERIES SPECIFICATIONS MODEL For use with the dynamometer model NETWORK SUPPLY Voltage Frequency Fuse Maximum current ELECTROMAGNETIC CLUTCH SUPPLY Voltage SUPPLY FOR EXTERNAL USE Voltage Maximum Current SELECTION OF NOMINAL CURRENT Selected by resistors EXCITATION SET-POINT Voltage DIGITAL INPUTS (GALVANICALLY INSULATED) Remote Control of Network Input (PSC) Control of the Electromagnetic Clutch STAND-BY (enable) Optocoupler activated by +24 V DC / 2.5 mA Optocoupler activated by either +24 V DC or +12 V DC / 2.5 mA max DIGITAL OUTPUTS (GALVANICALLY INSULATED) Temperature Alarms Electrical...

DES SERIES SYSTEM CONFIGURATION DES Series Power Supply DSP 7000 Dynamometer Controller POWER TSC 401 Torque / Speed Conditioner TS / TM / TF Series Torque Sensor Computer with M-TEST Software USER DISPLAY DYNAMOMETER CONTROLLER BRAKE STATUS DISPLAY BOTH SETUP POWER UNITS OPEN LOOP BRAKE ON/OFF TORQUE UNITS RESET TARE BLOCK DIAGRAM Selection Feedback Current Excitation Current Control Nominal Current Excitation Circuit Primary Supply Circuit Excitation Control Electrical Alarm Excitation Temp. Control Interface Dynamometer Temp. Clutch Control Control Inputs / Outputs Fuse Network Filter Excitation...

DES 411 with Water cooling The DES Series Power supplies are delivered with integrated cables (including connectors) with a length of 1.5 m on the dynamometer connection side and 5 m on the controller side. The DES Series units are to be mounted on a metallic surface in order to allow ample heat dissipation. For safety reasons, the DES Series case has to be grounded. CAUTION: For 2-3-4 WB 15 and 2-4 PB 15 dynamometers, the DES 411/12X Power Supply with integrated Water Cooling System (see above drawing) need to be used. When the DES Series is ordered separately from the dynamometer, it is absolutely...