Antenna i/o connector – Research Concepts RC2500 User Manual
Page 22
RC2500 Antenna Controller
Chapter 3
Installation/Setup 15
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA
www.researchconcepts.com
The different RC2500 versions will have different pin definitions for connectors J7 and J6. In the case of
the 7134 summary limit version and the 9135 version, only J7 is required to make connection to the A.I.U.
For the case of the 7134 individual limits version, both J7 and J6 connections are required.
3.3.2.1
7134 Summary and Individual Limits Versions Connections
Antenna I/O Connector
J7, located to the right of J4, is a DB-25 plug identified as the Antenna I/O connector. This connector
acts as the antenna motion control port of the RC2500. The port consists of 9 solid-state low-side relay
drivers rated at 700mA sink each. Max voltage is +27VDC on these drivers. Current is returned to the
A.I.U. via the Drive Common line (pins 2,5, and 8). In addition to the drivers, this port supports three 24
VDC, low current, status inputs with isolated returns. The individual pin definitions are shown in the table
below. J7 is the only required connection between the RC2500 and the Vertex 7134 Summary limit A.I.U.
Pin #
Description
1
Azimuth CW command, pull-down drive, 700mA max sink. (0.4V = move CW)
2
Drive Common (return path for AZ, EL, & POL drive command lines)
3
Azimuth CCW command, pull-down drive, 700mA max sink. (0.4V = move CCW)
4
Elevation UP command, pull-down drive, 700mA max sink. (0.4V = move UP)
5
Drive Common (return path for AZ, EL, & POL drive command lines)
6
Elevation DOWN command, pull-down drive, 700mA max sink. (0.4V = move Down)
7
Polarization CW command, pull-down drive, 700mA max sink. (0.4V = move CW)
8
Drive Common (return path for AZ, EL, & POL drive command lines)
9
Polarization CCW command, pull-down drive, 700mA max sink. (0.4V = move CCW)
10
Summary Limit input, 24 VDC low current.(same as AZ CCW limit of J6-16)
11
Nc
12
Nc
13
Nc
14
Azimuth Drive Fault input, 24 VDC low current. (0V = drive fault)
15
Elevation Drive Fault input, 24 VDC low current. (0V = drive fault)
16
Emergency Stop status return
17
Summary Limit & AZ/EL Drive Fault return (same as AZ CCW Limit return of J6, pin 4)
18
Summary Limit & AZ/EL Drive Fault return (same as AZ CCW Limit return of J6, pin 4)
19
Emergency Stop status input, 24 VDC low current. (0V = Emergency STOP)
20
Nc
21
Azimuth Fast command, solid state drive, 700mA max sink. (0.4V = AZ Fast)
22
Elevation Fast command, solid state drive, 700mA max sink. (0.4V = EL Fast)
23
Drive Enable command, solid state drive, 700mA max sink. (0.4V = Drive Enable)
24
Maintenance status input, 24 VDC low current. (0V = Maintenance – pedestal jogging)
25
Maintenance status return.
In addition to a Maintenance status indication, the Voltage on pin 24 is used to power the electronic
components that reside on the A.I.U.-side of the opto-isolation barrier. When no Remote/Manual switch
is present at the A.I.U., this pin must still be powered by between +15 and +28V (and its return line
connected to “-“) in order for the RC2500 drive system to function.