6.15 E-SX Bus Interface Card
6-253
Chap. 6
CONTROL OPTIONS
6.15.4 Basic connections
Perform the wiring and connection work as explained in Section 6.1.4 "Installing internal options
(OPC-VG1-)."
Risk of electric shock, fire, and other hazards if improper wiring work is performed. Only a qualified
electrician should make the connections. If it is necessary to touch electrical circuits to make connections after
the power has been connected, switch the power breaker to the OFF (open) position to prevent electric shock.
Even when the breaker is OFF (open), the smoothing capacitor is charged and will cause electric shock if
touched. Make sure the inverter CHARGE lamp is off and use a tester to verify that the DC voltage of the
inverter has fallen to a safe level.
The E-SX bus voltage is supplied from the PLC power module. Before installing or removing this option,
make sure that the MICREX-SX power and inverter power are OFF.
Do not use a product if parts are damaged or missing. Risk of injury and damage.
Improper work when installing or removing the product may cause product damage.
Follow the rules below when making connections.
[Rules for connections]
(1) Use dedicated cables for the E-SX bus.
Model: NU1C-P3 (0.3 m) to NU1C-A0 (100 m)
For cable specifications, refer to the MICREX-SX manual (Hardware).
(2) Before performing work, make sure that both the MICREX-SX and the inverter are powered OFF.
(3) For the E-SX bus cable wiring, the main circuit wires of the inverter should be kept as far away as
possible (at least 30 cm) from other power lines to prevent malfunctioning due to noise. Never
insert in the same duct.
(4) Connect the wiring of the E-SX bus cable from OUT to IN on the SPH3000MM, or from IN to
OUT. Communication is not possible with an OUT-OUT or IN-IN connection, and thus the system
will not operate. Connection of a terminating connector is prohibited. Never connect a terminating
connector.
To Next Page
Loading...
