Setting Up The Slide Switches - Fuji Electric FRENIC-HVAC User Manual

5.1.8

Setting up the slide switches

Before changing the switches, turn OFF the power and wait at least ten minutes. Make sure that the LCD monitor
is 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 occur.
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 5.5.
To access the slide switches, remove the front cover so that you can see the control PCB.
Table 5.3 lists the function of each slide switch.
Slide Switch
SW1 Switches the service mode of the digital input terminals between SINK and SOURCE.
- This switches the input mode of digital input terminals [X1] to [X7], [FWD] and [REV] to
be used as the SINK or SOURCE mode.
- Factory default: SINK
SW2 Switches the terminating resistor of RS-485 communications port on the inverter ON and OFF.
(RS-485 communications port 2, on the terminal block)
- If the inverter is connected to the RS-485 communications network as a terminating device,
turn SW2 to ON.
SW3 Switches the terminating resistor of RS-485 communications port on the inverter ON and OFF.
(RS-485 communications port 1, for connecting the keypad)
- To connect a keypad to the inverter, turn SW3 to OFF (Factory default).
- If the inverter is connected to the RS-485 communications network as a terminating device,
turn SW3 to ON.
SW4/SW6 Switches the output mode of the analog output terminal [FM1]/[FM2] between voltage and
current.
When changing this switch setting, also change the data of function code F29/F32.
Output mode
Voltage output (Factory default)
Current output
SW5 Switches the property of the analog input terminal [C1] between analog setting current input
and PTC thermistor input.
When changing this switch setting, also change the data of function code H26.
Output mode
Analog setting current input
(Factory default)
PTC thermistor input
Table 5.3 Function of Each Slide Switch
Function
SW4
VO1
IO1
5-19
5.1 Mounting and Wiring the Inverter
[FM1] [FM2]
F29 data SW6
0 VO2
1, 2 IO2
SW5 H26 data
C1 0
PTC 1 (alarm) or 2 (warning)
F32 data
0
1, 2