2-23
Wiring for control circuit terminals
For FRN75G1
-2, FRN90G1-2 and FRN132G1-4 to FRN630G1-4
(1) As shown in Figure 2.19, route the control circuit wires along the left side panel to the outside of the inverter.
(2) Secure those wires to the wiring support, using a cable tie (e.g., Insulok) with 3.8 mm or less in width and 1.5 mm or less
in thickness.
Figure 2.19 Wiring Route and Fixing Position for the Control Circuit Wires
- Route the wiring of the control circuit terminals as far from the wiring of the main circuit as possible.
Otherwise electric noise may cause malfunctions.
- Fix the control circuit wires with a cable tie inside the inverter to keep them away from the live parts of the
main circuit (such as the terminal block of the main circuit).
2.3.6 Setting up the slide switches
Before changing the switches or touching the control circuit terminal symbol plate, turn OFF the power and wait at
least five minutes for inverters with a capacity of 22 kW or below, or at least ten minutes for inverters with a
capacity of 30 kW or above. Make sure that the LED monitor and charging lamp are turned OFF. Further, make sure,
using a multimeter or a similar instrument, that the DC link bus voltage between the terminals P(+) and N(-) has dropped
to the safe level (+25 VDC or below).
An electric shock may result if this warning is not heeded as there may be some residual electric charge in the DC
bus capacitor even after the power has been turned OFF.
Switching the slide switches located on the control PCB allows you to customize the operation mode of the analog output
terminals, digital I/O terminals, and communications ports. The locations of those switches are shown in Figure 2.20.
To access the slide switches, remove the front cover so that you can see the control PCB. For inverters with a capacity of 30
kW or above, open also the keypad enclosure.
For details on how to remove the front cover and how to open and close the keypad enclosure, refer to Section 2.3.1
"Removing and mounting the front cover and the wiring guide."
Control circuit terminal block
Cable tie
Wiring support
Wiring for control
circuit terminals
Left side panel
Wiring for control
circuit terminals
Section A
Details of Section A
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