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6.4.4 Basic connection diagram
Refer to "6.1.4 Installing Internal Options (OPC-VG1-)" before connecting the cables.
• Incorrect cabling may cause a disaster such as electrical shock or fire. Only a qualified person should perform
cabling. Before touching the power supply circuit (e.g., for cabling after power on), be sure to turn off (i.e.,
open) the circuit breaker to prevent electrical shock.
• Note that the smoothing capacitor is charged after turning off (i.e., opening) the circuit breaker and touching it
causes an electrical shock. Ensure that the charge lamp (CHARGE) of the inverter has gone off and that the DC
voltage of the inverter has lowered to a safety level using a tester.
• Do not use the product that is damaged or lacking parts to prevent an injury or damage.
• Incorrect handling in installation/removal jobs could result in a broken product.
The basic connection diagram is shown on the next page. When connecting the cables, observe the
following precautions.
[Notes on connection]
(1) Use either of the following cables as a T-Link communications cable.
• Furukawa Electric twisted pair cable
CPEV-SB 0.9 dia. x 1 pair
• Furukawa Electric twisted pair cable
KPEV-SB 0.5 mm
2
x 1 pair
Refer to the document of MICREX for the cable specifications.
(2) Connect the terminal resistor 100 supplied with the T-Link master to the both ends of the T-Link.
(3) Bes sure to connect the T-Link cable without going over the same line twice as shown in the basic
connection diagram (Figure 6.4.3).
Correct transmission cannot be performed if the cable branches.
(4) To prevent an error due to noises, keep the T-Link cable apart from the main circuit cables of the
inverter and other power cables as apart as possible (30 cm or more)
and never put it in the same
duct.
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