electronic drive module
 

 

 All DSSI thrusters are powered and controlled by a vector drive type electronic drive module (EDM), one EDM for each thruster.  The EDM provides power in a closed loop, factory calibrated system and controls the motor speed by estimating the orientation of the permanent magnet flux vector to determine the thruster motor shaft rotational position.  It connects directly to the thruster and is powered from an AC or DC source over a range of voltages.  The drive does not require that a resolver be installed in the thruster for motor commutation.  The drive also includes an RS-485 serial interface which is used to configure the drive and to monitor its performance using a PC or other host computer.  
 
 
  Tech Specs:  Electronic Drive Module
 
    2000 Series 4000 Series 8000 Series

Speed & direction command

  

-10 VDC for full reverse thrust to +10 VDC for full forward thrust
Operating temperature  

-10° to 70°C ambient; 90°C base plate
Storage temperature  

-20° to +100°C
Power requirements:        
0.5 to 1.0 hp   120 VAC, 50–60 Hz or 72–180 VDC    
1.0 or 2.0 hp   120 VAC; 240 VAC, 1 or 3-phase; 72–180 VDC; or 210–360 VDC    
2.0 hp     110–134 VAC, 47–66 Hz (120 VAC nominal), or 140–180 VDC; 240 VAC, 3-phase available  
10 hp, 240 VAC       200–360 VAC, 50–60 Hz (240 VAC nominal), 3-phase; or 200–360 VDC
10 hp, 480 VAC
15 and 20 hp		       380–510 VAC, 50–60 Hz (480 VAC nominal), 3-phase; or 375–750 VDC
Size   4.8 x 6.8 x 1.7 in
12.2 x 17.2 x 4.3 cm		 8.98 x 5.59 x 2.76 in
22.8 x 14.2 x 7.0 cm		 10.52 x 5.59 x 2.76 in
26.7 x 14.2 x 7.0 cm
Weight  

3.5 (-0.5,+2.0) lb; 1.6 (-0.2,+0.9) kg
Connections to DriveBlok  

8-pin terminal block of pluggable screw terminals for power and thruster connections

25-pin I/O terminal block of pluggable screw terminals for digital and analog inputs and outputs

RJ11 6-pin connector for RS-485 serial interface
Automatic shutdown conditions
Excessively high or low input voltage
 Internal temperature greater than 92°C
Ground fault
Short circuit
Instantaneous over current