Activation; Signalling Leds; Troubleshooting; Versions - CEL-MAR ADA-M140 User Manual

M-1 to rs-485/rs-422 converter (short-haul modem)
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ADA-M140

6. ACTIVATION

Converter can be powered after proper connection according to steps above.
If connection was made properly green LED PWR on front panel of converter should light, if not check polarization of power
connection. When data is present the LEDs Tx and Rx should blinking.

6.1. SIGNALLING LEDS

LED
PWR
Signalling of Power Supply
RX
Signalling of data receiving from RS485/RS422 port of ADA-M140
TX
Signalling of data transmitting from converter via RS485/RS422 port of ADA-M140
DCD
Signalling of correctness connection of converters by the use of M-1 buses.
AT BAUD RATE ABOVE 38.4 KBPS THE LED'S TX, RX WILL LIGHT WEAKLY DURING DATA TRANSMISSION

6.2. TROUBLESHOOTING

Problem
PWR led not light
Rx LED lights
continuously
No transmission,
Tx led blinking.
DCD led not light
DCD led not light,
Tx led lights.

7. VERSIONS

Electronics version:
Basic
Special
Galvanic isolation:
1kV=, 2-way
1kV=, 3-way
Terminals & Terminals Cover:
Cover without inlets, screw terminal block
Cover with inlets, screw terminal block
Cover without inlets, plug-in screw terminal block
ATTENTION!
Check polarization and parameters of connected power supply.
RS485(4W) /RS422 bus. Wrong polarization on Rx+, Rx- terminals. Change polarization.
RS485(2W) bus. Wrong polarization on Tx+/A, Tx-/B terminals. Change polarization.
RS485(4W) /RS422 bus. Check the correctness of connection to Tx, Rx terminals according
to chapter 3.
RS485(2W) bus. Check the correctness of configuration setting according to chapter 4.
Interruption or incorrect connected of M-1 bus. Check the correctness of connection. Check
the continuity of M-1 bus.
M-1 bus. Wrong polarization on Rx+, Rx- terminals of M-1 bus. Change polarization.
ADA-M140 -
-
1
2
23
Description
Solutions
-
Order example:
Product Symbol: ADA-M140-1-2-3
1 – basic electronics version,
2
2 – 1kV=, 2-way galvanic isolation,
3 – cover without inlets, plug-in screw terminal block.
1
2
3
10

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