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4009-33 Installation Manual
18.8.
Motor Driver Enclosure (MK2 MDE)
The Motor Driver Enclosure contains the Motor Driver for the 3 Brushless DC Drive motors (AZ/EL/CL) and the Brake
Controller for the EL & CL motors.
Connectors
Drive
Home
AZ
EL
CL
Status LEDs
CL, Drive
EL Drive
AZ Drive
MDE Status
18.9. Stabilized Antenna Pedestal Assembly
Type:
Stabilization:
Stab Accuracy:
Azimuth Motor:
Level and Cross Level Motors,
Inertial Reference:
Gravity Reference:
AZ transducer:
Pedestal Range of Motion:
Elevation
Cross Level (Inclined 30 degrees)
Azimuth
Elevation Pointing
Maximum Ship Motions
Roll:
Pitch:
Yaw:
Turning rate:
Headway:
Heave
Surge
Sway
Specified Ship Motions (for stabilization accuracy tests):
Roll
Pitch
AZ Relative
Mounting height:
4009-33 Technical Specifications
DA-15P connector
DE-9S connector
DA-15S connector
DA-15S connector
DA-15S connector
Three-axis (Level, Cross Level, AZ)
Torque Mode Servo
0.1 degrees RMS, 0.2 degrees MAX in presence of specified ship
motions (see below).
Size 23 Brushless DC Servo, Double Stacked w/ Encoder
Size 23 Brushless DC Servo w/ Brake
3 Solid State Rate Sensors
3 axis solid state accelerometer
256 line optical encoder / home switch
-15 to +115
+/- 35 degrees
Unlimited
+5 to +90 degrees at maximum specified roll
+10 to +85 degrees at maximum combined roll & pitch
+/-24 degrees at 8-12 sec periods
+/-14 degrees at 6-12 sec periods
+/-8 degrees at 15-20 sec periods
Up to 12 deg/sec and 15 deg/sec/sec
Up to 50 knots
0.5G
0.2G
0.2G
+/- 20 degrees at 8 second period
10 degrees FIXED
0, 45, & 90 degrees with respect to roll input
Sea Tel recommends that you not exceed tangential accelerations
of 0.5 G (See chart below).
18-4
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