Power Supply for WB & PB Dynamometers DES Series0 pages

M AGTROL
DES
Data Sheet
DES 310 and DES 311
Power Supplies
Features
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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 VAC
DESCRIPTION
DES 310 and DES 311 Power Supplies are suited to the
entire range of Magtrol’s Eddy-current and powder brake
dynamometers. To avoid any disruption of the surrounding
electronic modules, the DES 310 / DES 311 supplies are fitted
in an industrial housing made of extruded cast aluminium.
This housing must be installed directly on the test bench, as
close to the dynamometer as possible.
The DES 310 / DES 311 supplies can be controlled by analog
and digital set-points coming from an electronic peripheral,
ideally from the DSP6001 Dynamometer Controller.
Control
The Power supplies can be switched on by remote control.
A stand-by command allows the dynamometer power to be
activated. The excitation current is controlled by a set-point in
the range of 0 to 10 VDC. The nominal value of the excitation
current is adjustable by internal resistors or remotely.
There are two digital outputs (alarms): one is an electrical
fault indicator and the other detects overheating in the DES
unit or the cooling water. If one of the alarms is activated, a
general alarm is signalled by means of relay contacts.
For applications with tandem dynamometers, the DES 310/
DES 311 units also control the power supply of the
electromagnetic clutch.
Supply Voltage
The supply voltage of the DES 310/DES 311 can be
selected to allow operation at either 230 VAC or 115 VAC
(50/60 Hz).
The DES 310 power supply includes a galvanic separation
between the supply circuit and the dynamometer power.
Because of the power required, the supply to the DES 311
unit is made directly without galvanic separation.
SYSTEM CONFIGURATION
Eddy-Current (WB)
OR Powder Brake (PB)
Dynamometer
Speed
TSC 401
Torque-Speed
Conditioner
This drawing illustrates a complete motor test system. A
basic test stand can also be configured with just a WB/PB
Dynamometer and the DES 31X Power Supply.
GPIB
or
RS-232
PC
M-TEST
Torque
DES 31X POWER SUPPLY
Excitation
DSP6001 Dynamometer Controller
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