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SMR series Digital Interfaces for Single-Channel Radio Control

Two models are available;
SMR-102Board only
SMR-122Boxed

The SMR is a Single channel, Microprocessor, Radio control Interfaces for general purpose Radio-Control applications. It provides proportional motor speed control with an active failsafe system. The units are used extensively in high-power radio-control applications utilising 4QD‘s 4QD, Pro and NCC motor speed controllers.

The mechanical layout of the SMR-102 board allows it to be plugged directly into the input connectors of the NCC series controllers.

For other controllers the boxed version, SMR-122, should be used.

Features include proportional control of a single channel with an output resolution of 64 states over the full stick displacement. Switched output mode for use in applications requiring a Radio-Control Switch. An on-board signal validation routine and a failsafe system give stable operation and "power-down" of the output in the event of transmission loss or hardware failure. The interface has an optically isolated input for maximum reliability.

The two versions of the interface are:

Board version - SMR-102


for NCC series only
Smr102

Boxed version - SMR-122


for all controllers
SMX-121

The boxed version has a 6 way lead which connects direct to the input connector on all NCC, Pro and 4QD series controllers.

Features

Specifications

Supply Voltage 5.7-32.0V*
Supply Current 4.7mA
Power Consumption 24mW
Output Method 2KHz PWM 0-100% Modulation
Output Voltage 4.3V PWModulated
Input Signal
Input Method 4-100Hz PWM 1.5mS Mark Centre [RC STD]
Input Voltage 3.2V - 5.5V Max
Input Resistance 50Kohm
Failsafe Parameters
Valid Input 0.7-2.3mS Mark on PWM Input (400Hz - 1.4kHz approx)
Fail Time-out 300mS
Fail Output 0V (Zero)
Physical Attributes
Operating Temperature -40 - +90deg;C
Dimensions mm(")(max) H 26.1(1.3) * W 35.6(1.4) * D 19.8(0.78)
Weight 38g

Instructions

The operating instructions explaining wiring and features are available for download in PDF format.

Prices

Description Order Code Price List Add to cart
Digital Interface Single Channel Opto, NCC SMR-102 Add
Digital Interface Single, Opto, Boxed, All SMR-122 Add

Suitable Controllers

The interface may be used directly with

We will possibly be able to issue instructions for use with our new Programmable-150 controller. Please ask.

It is possible that other controllers may be used but the interface is not designed for use with them so instructions are not provided.


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Page Information


Document URL: www.4qd.co.uk/accs/smr.html
Page first published 21st October 2002
Last modified: Friday, 14-Dec-2007 09:16:07 GMT
Page's Author: Richard Torrens
© 2004-2007 4QD