ABB REF 54 Series Technical Reference Manual page 84

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Technical Reference Manual, General
screwed to the rear panel (X3.2) and the other end to the RER 123, which is screwed
to the rear side of the relay by using a mounting plate. The cable and the plate are
included in the delivery of the RER 123 (ordering number: RER123-xx).
The serial interface RS-485 on the rear panel (connector X3.3 ) is used for
connecting the feeder terminal to the SPA bus or the LON bus. The SPA/LON bus
is connected via the connection module type RER 103 (ordering number: RER103-
xx) fitted to the 9-pin D-type subminiature connector and screwed to the rear panel.
The connectors X4.1...X7.2 are 18-pin detachable multi-pole connector strips with
screw terminals. The male part of the multi-pole connector strips is fastened to the
printed circuit boards. The female parts, including accessories, are delivered
together with the feeder terminal. The female connector part can be secured with
fixing accessories and screws. One max. 1.5 mm
can be connected to one screw terminal.
The digital inputs and outputs (contacts) of the feeder terminal are connected to the
multi-pole connectors X4.1...X7.2. The auxiliary power supply is connected to the
terminals X4.1:1 (plus polarity) and X4.1:2 (minus polarity). When the RTD/
analogue module is used, the inputs and outputs are connected to the terminals
X6.1:1 and X6.1:2. The feeder terminal self-supervision output IRF is linked to the
terminals X4.1:3, X4.1:4 and X4.1:5.
Protective earth is connected to the screw marked with the earth symbol.
The connectors are designated according to the module slot in the REF 54_ feeder
terminal.
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X1.1 connector for transformer inputs (current and voltage trafos) (module slot 1)
X2.1 connector for sensor input 9 (slot 2)
X2.2 connector for sensor input 8 (slot 2)
X2.3 connector for sensor input 7 (slot 2)
X2.4 connector for sensor input 6 (slot 2)
X2.5 connector for sensor input 5 (slot 2)
X2.6 connector for sensor input 4 (slot 2)
X2.7 connector for sensor input 3 (slot 2)
X2.8 connector for sensor input 2 (slot 2)
X2.9 connector for sensor input 1 (slot 2)
X3.1 not used, reserved for future purposes (slot 3)
X3.2 connector for RS-232 interface (slot 3)
X3.3 connector for RS-485 interface (slot 3)
X3.4 connector for the external display module (slot 2)
X4.1 upper connector for combined I/O and power supply module PS1/PS2 (slot 4)
X4.2 lower connector for combined I/O and power supply module PS1/PS2 (slot 4)
X5.1 upper connector for I/O module BIO1 (slot 5)
X5.2 lower connector for I/O module BIO1 (slot 5)
X6.1 upper connector for I/O module BIO1 (slot 6), REF 545
upper connector for RTD/analogue module (slot 6), REF 541 or REF 543 with
RTD/analogue module
X6.2 lower connector for I/O module BIO1 (slot 6), REF 545
lower connector for RTD/analogue module (slot 6), REF 541 or REF 543 with
RTD/analogue module
1MRS750527-MUM
2
wire or two max. 0.75 mm
2
wires