5 - 23/May/97
SECTION 1 - DESCRIPTION
1.1 General Features
The modular DBM series drives offer digital speed loop and digital analog interfaces. They
are suitable for use with 4-quadrant, brushless motors having sinusoidal back e.m.f. .
Construction allows the use of the power amplifiers only, if required for easy CNC interface.
Hardware circuits are reduced by using Isolated Gate BipolarTransistor (IGBT) components
in the power section.
Control technique is sinusoidal.
The unique advantages of the digital technology (16/32 bit DSP based) are:
•
Simplified installation through optimization of control parameters via software.
•
No potentiometer adjustments.
•
Autophasing.
•
Easy adaption to different applications: e.g. you may change the PI gain variables and
choose between speed or torque control.
•
Compact assembly: up to 3-axis control from a single module.
•
Flexibility: up to 99 axes, 240A peak per axis.
1.2 Standard Features
•
Three-phase full bridge with IGBT
•
Current reference refresh time: 100
µ
s
•
Phases refresh time: 300
µ
s
•
R/D resolution automatically switched according to actual speed for optimum system
performance (between 10 and 16 bit)
•
Resolution of A/D converter: 12 bit or 14 bit (optional)
•
4 different velocity control structures to meet the most challenging requirements
•
Digital low-pass filter on speed loop
•
Over travel limit switches available (when Expansion is not present)
•
Totally programmable control and interface parameters
•
Current bandwidth (analog) > 1kHz
•
Dead point: absent
•
Speed ratio: 1:4000
•
Static current gain 10
5
A/V
•
Max operating temperature / humidity: 45
°
C (113
°
F) / 90%
•
Derating for altitude > 1000 m (3333 feet): 1% per 100 m (333 feet)
•
Storage temperature: -10 to +70
°
C
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