![FE FRENIC-Mini Instruction Manual Download Page 38](http://html.mh-extra.com/html/fe/frenic-mini/frenic-mini_instruction-manual_547580038.webp)
2-18
- Route the wiring of the control terminals as far from the wiring of the main circuit as
possible. Otherwise electric noise may cause malfunctions.
- Fix the control circuit wires inside the inverter to keep them away from the live parts of
the main circuit (such as the terminal block of the main circuit).
- The pin assignment of the RJ-45 connector on the FRENIC-Mini series is different from
that of the RJ-45 connector on the FVR-E11S series keypad. Do not connect them with
each other; doing so may cause a short-circuiting or collision of signal lines, resulting in
a broken inverter.
2.3.7 Setting up the jumper switches
Before changing the jumper switches, turn OFF the power and wait at least five minutes. Make
sure that the LED monitor is turned OFF. Further, make sure, using a multimeter or a similar
instrument, that the DC link bus voltage between 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 link bus capacitor even after the power has been turned OFF.
Switching the jumper switches (shown in Figure 2.11) allows you to customize the specifications of
the digital I/O terminals and the RS-485 communication terminating resistor.
To access the jumper switches, remove the terminal block covers.
For details on how to remove the terminal block covers, refer to Section 2.3.1.
Table 2.9 lists function of each jumper switch.
Table 2.9 Function of Jumper Switches
Switch Function
1
SW1
SINK/SOURCE switch for digital input terminals
• To use digital input terminals [X1] to [X3], [FWD] and [REV] in the SINK mode, set
a jumper in the sink position, to use them in the SOURCE mode, set a jumper in
the source position. (See Figure 2.11.)
• To switch between SINK and SOURCE modes, use a mini needle-nose pliers or
the similar tool to change the mounting position of the jumper.
2
SW3
Terminating resistor ON/OFF switch for RS-485 communication
• To connect an optional remote keypad, set a jumper in the OFF position (factory
default).
• If the inverter is connected to the RS-485 communications network as a termi-
nating device, set a jumper in the ON position.
• To switch the terminating resistor ON and OFF, use a mini needle-nose pliers or
the similar tool to change the mounting position of the jumper.