2-15
Fan power supply switching connectors (CN R and CN W) (on inverters of 60 HP or above for 230 V and
those of 125 HP or above for 460 V)
The standard EQ7 series accepts DC-linked power input in combination with a PWM converter. Inverters of 60 HP or
above for 230 V and those of 125 HP or above for 460 V, 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) EQ7-2060-C to EQ7-2125-C, EQ7-4125-C to EQ7-4200-C
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) EQ7-2150-C, EQ7-4150-C to EQ7-41000-C
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
By factory default, the fan power supply switching connectors CN R and CN W are set on 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) EQ7-2060-C to EQ7-2125-C,
EQ7-4125-C to EQ7-4200-C
(b) EQ7-2150-C,
EQ7-4250-C to EQ7-41000-C
Figure 2.6 Location of Switching Connectors and Auxiliary Power Input Terminals
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 power
supply switching
connectors
(CN R and
CN W)
Auxiliary fan
power input
terminals
Power PCB
Auxiliary power input
terminals
Power switching
connectors (CN UX)
Fan power
supply
switching
connectors
(CN R and
CN W)
Auxiliary fan power input
terminals
Auxiliary
power input
terminals
Keypad enclosure