Love Controls MN-1 Operating instructions

Specifications and Operating Instructions
The Model MN-1 Mini-Node Communication Signal
Converter is a low cost device that converts half duplex RS
485 serial communications signals into a signal that can be
read by any computer with a USB port. The integral USB
connector and RJ-45 connector reduces set up time by
eliminating extra wiring. The Model MN-1 is powered via the
USB connection which eliminates the need for an external
power source. The compact size is great for field
installation, control panels, and lab testing.
Bulletin E-90-MN-1
Model MN-1 Mini-Node Communication Signal Converter
LOVE CONTROLS DIVISION
DWYER INSTRUMENTS, INC. Phone: [phone] www.love-controls.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [email protected]
57/64
[22.5]
3-5/32
[80.0]
53/64
[21.2]
YELLOW LED GREEN LED
PIN Signal Name
1Reserved
2Reserved
3Reserved
4SG+
5SG-
6Reserved
7Reserved
8Reserved
SPECIFICATIONS
Power Requirements: No external power required.
Power Consumption: 0.4 W.
Isolated Voltage: 3000 VDC.
Input Impedance: 96 kΩ.
USB Connector: A-Type (plug).
RS-485 Connector: RJ-45.
Baud Rate: 75, 150, 300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, and 115200 bps.
Compatibility: Full compliance with USB V.2.0
specification.
RJ-45 PIN
APPLICATION
E-90-MN-1 9/27/07 12:29 PM Page 1

LOVE CONTROLS DIVISION
DWYER INSTRUMENTS, INC. Phone: [phone] www.love-controls.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [email protected]
©Copyright 2007 Dwyer Instruments, Inc. 9/07 FR# R5-443583-00 Rev.1
LED MODES
1. Green LED indicates unit is powered.
2. Yellow LED to indicate that data is being transferred.
USB DRIVER INSTALLATION
NOTE: Do NOT connect MN-1 to PC before extracting the
driver file.
1. Insert the factory supplied CD into the CD drive of your
computer. If the CD does not start automatically, click
“Start”, “Run” & type D:/autorun.exe then click “OK”.
2. Follow the on screen instructions to prepare for
installation of the driver.
3. A folder marked SiLabs should now appear in the PC’s
C drive.
4. Connect the MN-1 to PC and installation instructions
will automatically appear.
5. Follow the on-screen instructions to complete the
driver installation.
MAINTENANCE
Upon final installation of the Model MN-1 Mini-Node USB to
RS 485 Converter, no routine maintenance is required. A
periodic check of system calibration is recommended. The
Model MN-1 is not field serviceable and should be returned
if repair is needed (field repair should not be attempted and
may void warranty). Be sure to include a brief description of
the problem plus any relevant application notes. Contact
customer service to receive a return goods authorization
number before shipping.
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