Ashida ADR141A - Leds; RS422; RS485 Port (for ADR241 A); USB Port (for ADR241 A)

ADR141A /
ADR241A
Doc
ID
: ADR241A
_IM_01
Ref ID : ADR241A/IM/UG
Rev No. : 02
Page No.
:
97
of 1
50
8.1.3 LEDs
The ADR141A/ ADR241A Relay is having 4 dual colour LED’s of high intensity for easy
identification of type of fault for easy user interface.
No LED Function
1.
ON /
ERROR
: Green LED indicates Relay OK.
: Red LED indicates problem in Relay hardware.
2.
PKP / HF : Green LED indicates Pick-up
: Red LED indicates relay operated at HF.
3.
OC FAULT /
EF FAULT
: Green LED indicates the relay tripped by OC. Hand Reset (HR) Type.
: Red LED indicates the relay tripped by EF. Hand Reset (HR) Type.
4.
TRIP / BF : Green LED Indicates that Trip pulse is being executed. SR type when TRIP
contact selected as SR and HR type when TRIP contact selected as HR.
: Red LED indicates BF operated. SR type when BF contact selected as SR
and HR type when BF contact selected as HR.
8.1.4 RS422/ RS485 Port (for ADR241A)
RS422/ RS485 Port is provided at the rear side of relay for permanent SCADA
connectivity. Using RS422/RS485 port the Fault data and Live Events can be
downloaded.
Note: The RS422 4 wire (Tx+, Tx-, Rx+, Rx-) communication port can be used as RS485 2 wire
(D+, D-) by shorting terminal B13 & B14 used as D+ and B15 & B16 used as D-.
8.1.5 USB Port (for ADR241A)
The USB port includes a USB full-speed function controller, USB transceiver, oscillator,
EEPROM, and asynchronous serial data bus (UART). No other external USB
components are required.
The USB Communication port is provided on front panel of relay. This is very useful for
downloading relay data and analysis it.
For proper operation the user must select the proper communication port in the General
Setting.