2-14
Chap. 2 MOUNTING AND WIRING THE INVERTER
Fan power supply switching connectors (CN R and CN W) (for 200 V class series with 37 kW or above and
400 V class series with 75 kW or above)
The standard FRENIC-MEGA series accepts DC-linked power input in combination with a PWM converter. The 200 V class
series with 37 kW or above and 400 V class series with 75 kW or above, however, contain AC-driven components such as AC
fans. To supply AC power to those components, exchange the CN R and CN W connectors as shown below and connect the
AC power line to the auxiliary fan power input terminals (R1, T1).
For the switching instructions, see Figures 2.6 and 2.7.
(a) FRN37G1
-2 to FRN75G1
-2, FRN75G1
-4 to FRN110G1
-4
Connector configuration
Use conditions
When not using terminal R1 or T1
(Factory default)
When using terminals R1 and T1
• Feeding the DC-linked power
• Combined with a PWM converter
b) FRN90G1
-2, FRN132G1
-4 to FRN630G1
-4
Connector configuration
Use conditions
When not using terminal R1 or T1
(Factory default)
When using terminals R1 and T1
• Feeding the DC-linked power
• Combined with a PWM converter
Note: A box (
) in the above figure replaces S or E depending on the enclosure.
A box () in the above figure replaces A or E depending on the shipping destination.
By factory default, the fan power supply switching connectors CN R and CN W are set o
the FAN and NC positions, respectively. Do not exchange them unless you drive the inverter with a DC-linked
power supply.
Wrong configuration of these switching connectors cannot drive the cooling fans, causing a heat sink overheat alarm
0h1
or a charger circuit alarm
pbf
.
Location of the switching connectors
The switching connectors are located on the power printed circuit board (power PCB) as shown below.
(a) FRN37G1
-2 to FRN75G1
-2,
FRN75G1
-4 to FRN110G1
-4
(b) FRN90G1
-2,
FRN132G1
-4 to FRN630G1
-4
Figure 2.6 Location of Switching Connectors and Auxiliary Power Input Terminals
Note: A box (
) in the above figure replaces S or E depending on the enclosure.
A box () in the above figure replaces A or E depending on the shipping destination.
CN W (white)
CN R (red)
CN W (white)
CN R (red)
CN W
(white)
CN R
(red)
CN W
(white)
CN R
(red)
Power switching
connectors (CN UX)
Fan powe
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