ABB ReliaGear ASPMETER A 42, Инструкции по установке и вводу в эксплуатацию

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8
B R A NCH CI RCU IT MON ITOR I NG
I N S TA L L AT I O N A N D CO M M I SS I O N I N G I N S T R U C T I O N S
—
ASPMETER solid core
Wiring
Power must be disconnected and locked
out before making any wiring connections.
Connect 2-wire or 4-wire Modbus RS-485 daisy chain network
(Figures 1 and 2).
Figure 1.
Figure 2.
2-wire
4-wire
1. Mechanically secure the RS-485 cable where it enters
the electrical panel.
2. Connect all RS-485 devices in a daisy-chain fashion,
and properly terminate the chain (Figure 3).
Figure 3.
2-wire example
3. Shield the RS-485 cable using twisted-pair wire, such as
Belden 1120A. The cable must be voltage-rated for the
installation.
4. When tightening terminals, ensure that the correct torque
is applied: 0.5 to 0.6 N·m (0.37 to 0.44 ft·lb ) for connectors
on main board, 0.22 to 0.26 N·m (0.16 to 0.19 ft·lb) for
connectors on adapter boards (Figure 4).
Figure 4.
WARNING: After wiring the RS-485 cable, remove
all scraps of wire or foil shield from the electrical
panel. Wire scraps coming into contact with high
voltage conductors could be DANGEROUS!
SHIELD
RX- TX-
RX+ TX+
TX-
TX+
2-wire
Master or Slave
SHLD TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHIELD
4-wire
Master Slave
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
2-wire example
–
+
Belden 1120A or
equivalent 120 Ω terminator
on last device of
daisy chain
Not Used
–+
SHIELD
RX- TX-
RX+ TX+
TX-
TX+
2-wire
Master or Slave
SHLD TX+
TX+
RX+
TX–
TX-
RX-
SHIELD SHIELD
4-wire
Master Slave
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
2-wire example
–
+
Belden 1120A or
equivalent
120 Ω terminator
on last device of
daisy chain
Not Used
–+
SHIELD
RX- TX-
RX+ TX+
TX-
TX+
2-wire
Master or Slave
SHLD TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHIELD
4-wire
Master Slave
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
2-wire example
–
+
Belden 1120A or
equivalent
120 Ω terminator
on last device of
daisy chain
Not Used
–+
SHIELD
RX- TX-
RX+ TX+
TX-
TX+
2-wire
Master or Slave
SHLD TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHIELD
4-wire
Master Slave
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
2-wire example
–
+
Belden 1120A or
equivalent 120 Ω terminator
on last device of
daisy chain
Not Used
–+
SHIELD
RX- TX-
RX+ TX+
TX-
TX+
2-wire
Master or Slave
SHLD TX+
TX+
RX+
TX–
TX-
RX-
SHIELD SHIELD
4-wire
Master Slave
SHLD
TX+
TX+
RX+
TX–
TX-
RX-
SHIELD
SHLD
TX+
TX+
RX+ TX–
TX-
RX-
SHIELD
2-wire example
–
+
Belden 1120A or
equivalent
120 Ω terminator
on last device of
daisy chain
Not Used
–+