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Model: RT-21r Category: Rotator Controllers

Rotator Controller, Remote

From $529.00

The RT-21r is the same as our standard RT-21 except it does not include the large transformer and therefore, cannot directly operate a rotator motor. This unit is intended to control systems that use external relays that in turn operate large motor rotator systems, or to operate our selection of Remote Power Units (RPU).

AC Mains
R Options
IP/Wireless	Clear

Rotator Controller, Remote quantity

Additional information
Application
Description
Features
Specifications
Software
Documentation
Reviews (0)

Additional information

Weight	6 lbs
Dimensions	12 × 12 × 6 in
AC Mains	115 VAC, 230 VAC (no power cable)
R Options	Relay Control 24VDC, Remote Power Unit RPU
IP/Wireless	None, WiFi (+$116.00)

Application

RT-21 Remote

The RT-21r cannot directly power a rotator motor. It is intended to interface with external motor control relays (+24VDC) for custom systems where relay control is desired. The RT-21r is also capable of interfacing to our RPU for control of large motor systems.

Relay Control
- 24VDC relay ouput (recommended)
- configurable for 12V motor relays, or contact closures
RPU
- Speed control/ramp for DC motors up to 2 HP (90/180V), or 28VDC 16A motors (Prop Pitch)

Control relays or the RPU may be separated from the RT-21r by many hundreds of feet and requires only small guage wiring. Outdoor CAT 5 cable can be used to minimize cable run costs. Mounting an RPU or relay panel at the tower is common.

Description

RT-21r Description:

The RT-21r is a universal digital rotator controller that may be user configured for many kinds of custom applications. We can even configure the RT-21r to directly operate a small 115VAC motor like the older Wilson, or Roto-Brake systems. Any application where motor current does not need to be supplied by the standard RT-21’s internal 5A transformer.

The RT-21r can be configured for all of the same position indicator variations as the standard controllers.

Why use an RT-21r instead of simple switch control, or modified Hy-Gain boxes?

Adds USB and/or RS-232 control
Adds high resolution digital display
Adds Point & Shoot hands off operation
In most cases, improves heading accuracy
When used with RPU, adds PWM speed control and gradual start/stop to your system eliminating tower and rotator stresses

Features

RT-21r Features:

PWM speed control effective for most rotator types (RPU only)
Precision ramp control for smooth starts and stops when used with RPU
Manual control using CCW and CW buttons
Point and Shoot knob for set and forget operation to 1º precision
The ability to correct for mast slippage using OFFSET
Computer control via RS-232 or USB to 1/10º accuracy
Precision heading accuracy up to 1/10thº
Master/Slave links two or more RT-21 for stacked arrays or turning multiple systems to the same heading
Counter-Rotation for single mast systems with rotator above a rotator
Fully programmable settings for speed, ramps, brake delay, limits and more
Two alternate OFFSETs for offset antenna directions on the same mast
Elevation and EME modes optimize for Az/El systems and tracking
Limits rotation for side mounts, and allows up to 720º total rotation for supporting rotators
High contrast yellow-green backlit LCD with 8 brightness levels and auto-dim
Many built-in safguards to protect your system from over-rotation due to internal or external failures
Rugged .080 aluminum chassis
Special advanced options for custom applications
Supports “Shortest Route” for rotators with more than 360º rotation capability
Comprehensive SETUP Utility software included
Free application software for satellite tracking, and remote control and rotator sharing using standard TCP/IP (Internet)

Specifications

RT-21r Specifications:

Size/Weight

Approx 4” x 8” x 7” HWD
(Not including rear terminal strip)
Approx 4 lb – Shipping = 6 lb

Input Power

115/230 VAC 50/60 Hz
Standard IEC power connector
and 5x20mm GMA fuse

Display

High contrast Yellow-Green backlit FSTN LCD
Wight brigtness levels w/auto-dim

Front Panel Controls

CCW, CW and CANCEL buttons (Operating)
SAVE, CHANGE, SETUP buttons (Setup)
Point and Shoot knob (340º = full rotation)

External Relay Control

CCW and CW DC relay control (12V or 24VDC relays)
various configurations

Operating Modes

Normal, Master/Slave, Master/Counter Rotate, Slave/Counter Rotate, Debug, Alt Offset

Position Feedback
Mechanisms Supported

Potentiometer 150 Ohm to 10 kOhm
Variable resistor 500 Ohm (Others accommodated with minor modification)
Proximity/reed switch or Hall effect up to 64 pulses/degree (divide ratio up to 23,500)
2-Bit rotary relative encoder (special order)
Others possible

Position Accuracy

Up to 1/3º for potentiometer
Up to 1/10º with proximity/reed switch

Brake and Reversal Delays

0 to 6 Seconds

Soft Limits

+/- 180º from normal stop
Restricts rotation to zero or opens to 720º

Motor Speed Control (PWM)

10% to 100% in 10% steps with 10 selectable start/stop ramp settings (RPU)
100% no ramps (Relay Control)

Computer Control

Compatible with all DCU 1 enabled programs
Expanded Ppotocol for GH Tracker and SETUP UTILITY (See manual)

Configuration

User changeable in minutes with no soldering

Protection

No Motion feedback
Pot out-of-range (Pot Systems)
Counter Range Error (Pulse counter)
Industrial rated Transient Voltage Suppressors on all external terminals

Rear Panel

8 Position barrier strip #6-32
Ground stud #6
Cable strain relief
USB-B
DB-9 RS-232

Warranty

Limited warranty, 1 Year parts and labor

Software

RT-21r Set-up Utility:

The RT-21r Setup Utility allows you to manage configuration options and optimize other controller settings from your PC.

It also enables you to . . .

Change the vanity boot message
See a graphic representation of the rotors rotation range
Change the rotors rotation range
Modify the security setting
Change the NO-MOTION motor timeout
Perform Auto-Cal on many rotor types
Save rotor settings to files
Restore rotor settings from files
Test computer rotator control

GH-Setup Utility Chart - Green Heron Engineering

GH Tracker – Satellite Tracking

Precision 1/10º automatic control
Optimizes your tracking program for the RT-21r
Interfaces with WSJT, Nova and others

GH Everyware – IP Networking for your GH Controllers

Remotely control your rotators over the Internet
Share rotators on your network

GH Everyware IP Networking - Green Heron Engineering

Documentation

RT-21pp Documents:

Download RT-21r Brochure

Download RT-21 User Manual

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