Power Supply And Booting; Led Indicators; On Board Controls; Loudspeaker - ABB 1MRS119000 Operator's Manual

1.6
1.7
1.8
1.9

Power supply and booting

The plug-in modem board is an optional unit for ABB Transmit Oy protection and con-
trol products. The modem is powered by the equipment it is used in and does not need a
separate external power supply.
Modem settings are stored in non-volatile memory on the modem board and read after
powering up. For certain settings, the microcontroller to which the modem is connected,
sends initialisation strings after power-up of the unit.
The supply voltages are: +5Vdc ±2% / 165 mA for the electronics

LED indicators

Communication to and from the modem, as well as the modem operation status can be
checked with help of seven diagnostic LED indicators.
The LED indicators are:
LIN Modem connected to line (off hook),
connected to the line relay control signals
RNG Indicates a true ringing signal.
TXD Transmitted data. Connected to the modem TxD signal
RXD Received data. Connected to the modem RxD signal.
CD Carrier detect.
RTS Request to send.
IRF Internal Fault detected by the watchdog. Normally this LED is off.
On-board controls
The 1MRS119000 is designed on a single printed circuit board (PCB). The board con-
tains 11 series of jumpers for country-specific settings. The jumpers can only be reached
after removing the PC board from the rack it normally is mounted in.
The jumpers are not allowed to change by users because of country-specific rules and
approvals.

Loudspeaker

An on-board piezoelectric loudspeaker is provided, mainly for testing purposes. For nor-
mal, silent operation, the loudspeaker can be switched off, or set to a low volume by alter-
ing certain settings. Refer to the chapter 'Command Overview'.
+24Vdc ±10% / 45 mA for the relays and LEDs
Green
Green
Green
Green
Green
Green
Red
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