Research Concepts RC2500 User Manual
Page 137
130
RC2500 Antenna Controller
Appendix M
Replacing the Harris 7022
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA
www.researchconcepts.com
RC2500 Pin #
& (resource #)
Description
7022 AIU Pin #
1 (PA1)
Azimuth Direction, pull-down drive, 700mA max sink.
(0.4V = direction CW)
AZ DIRECTION TB2-37
2
Drive Ground (return path for AZ, EL, & POL drive
command and limit status lines)
DRIVE GND TB2-47,48
3 (PA0)
Azimuth Drive, pull-down drive, 700mA max sink. (0.4V =
AZ move)
AZ DRIVE TB2-36
4 (PA4)
Elevation Drive, pull-down drive, 700mA max sink. (0.4V
= EL move)
EL DRIVE TB2-33
5
Drive Ground (return path for AZ, EL, & POL drive
command and limit status lines)
DRIVE GND TB2-47,48
6 (PA3)
Polarization CCW Command, pull-down drive, 700mA
max sink. (0.4V = move CCW)
POL CCW TB2-32
7 (PA7)
Elevation Brake, pull-down drive, 700mA max sink. (0.4V
= EL Brake release)
EL Brake TB2-39
8
Drive Ground (return path for AZ, EL, & POL drive
command and limit status lines)
DRIVE GND TB2-47,48
9 (PA6)
EL Speed solid state drive, 700mA max sink. (0.4V = EL
Slow Speed)
EL SPEED TB2-35
10 (PB0)
Azimuth CCW Limit Status input, 24 VDC low
current.(same as J6-16) not used here
No connect
11
nc
No connect
12
nc
No connect
13
nc
No connect
14 (P2.4)
AUTO – MANUAL Status input, 24 VDC low current.
(+24V = Manual…a.k.a. Maintenance)
AUTO – MANUAL TB2-24
15 (HSI.1)
Unused Status input, 24 VDC low current. (formerly 0V =
EL fault)
No connect
16 (PB7)
Unused; PB7 sense return
No connect
17 (PB0,
HSI.1,P2.4)
Drive Ground (AUTO – MANUAL and AZ CCW status
return; same as J6-4)
DRIVE GND TB2-47,48
18 (PB0
HSI.1,P2.4)
Drive Ground (AUTO – MANUAL and AZ CCW status
return; same as J6-4)
DRIVE GND TB2-47,48
19 (PB7)
Unused; PB7 sense input
No connect
20
nc
No connect
21 (PA2)
AZ Speed solid state drive, 700mA max sink. (0.4V = AZ
Slow Speed)
AZ SPEED TB2-38
22 (PA5)
Elevation Direction, pull-down drive, 700mA max sink.
(0.4V = move UP)
EL DIRECTION TB2-34
23 (PC2)
Polarization CW Command, pull-down drive, 700mA max
sink. (0.4V = move CW)
POL CW TB2-31
24 (PB6)
+24 VDC supply from AIU **see text discussion **, 24
VDC low current. (ESTOP input, 0V = Emergency STOP)
+24VDC Supply from AIU,
*see text.* TB2-45
25 (PB6)
ESTOP input return line (formerly Maint status return)
DRIVE GND TB2-47,48
Remember, 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. This pin must still be powered by between +15 and +28V (and the drive
ground line connected to “-“) in order for the RC2500 drive system to function.
Auxiliary I/O Connection
J6, located directly above J7, is the Auxiliary I/O connector. This port, based on a DB-25 receptacle,
supports isolated, axis-specific limit inputs as well as contact closures for summary faults and peripheral