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9.3.5 Basic connection diagram
• Have connection conducted by professionals. If electric circuits must be touched during connection after
power-on, turn the power supply side circuit breaker off (open) to avoid electric shock.
Electric shock or fire may result.
• Even after the circuit breaker is turned off (to open the circuit), the smoothing capacitors remain charged; wait
until the CHARGE lamp of the converter is unlit and measure the DC voltage of the converter with a
multimeter or the like to check that the voltage has dropped below the safe level.
• Because the power of the SX bus is supplied from the power module of the PLC, check that MICREX-SX and
the converter are turned off before installing or removing this option.
Electric shock may result.
• Do not use a product having a broken or missing part.
Injury may result.
• Do not perform inappropriate work during installation or removal of the product.
Breakage may result.
The example of basic connection diagram is shown on the next page. Observe the following precautions when
connecting.
[Precautions about connection]
(1) Be sure to use the special cable for the SX bus cable.
Model: NP1C-P3 (cable length 0.3m) to NP1C-25 (cable 25m)
For the cable specifications, refer to the reference data of MICREX-SX.
(2) Check that MICREX-SX and the converter are turned off before starting work.
(3) Connect the terminator plug, which is attached to the MICREX-SX CPU module, at each of both ends of the SX
bus.
(4) Route the SX bus cable as far away (at least 30cm) from the main circuit cables of the converter main body and
other power cables as possible to avoid malfunction caused by noise. Never route them in the same duct.
(5) Connect the SX bus cable from OUT of the base board to IN. With OUT-OUT or IN-IN connection,
communication fails and the system does not function. Route cables so that the bending radius of the cable
becomes larger than 50mm.
9-20
Содержание RHC-D 690V Series
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