(Note 4) THR function can be used by assigning code "9" (external alarm) to any of the terminals [X1] to [X5], [FWD] and [REV]
(function code: E01 to E05, E98, or E99).
(Note 5) Frequency can be set by connecting a frequency-setting device (external potentiometer) between the terminals [11], [12]
and [13] instead of inputting a voltage signal (0 to +10 VDC, 0 to +5 VDC or +1 to
+5 VDC) between the terminals [12] and [11].
(Note 6) For the control signal wires, use shielded or twisted pair wires. Ground the shielded wires. To prevent malfunction due to
noise, keep the control circuit wiring away from the main circuit wiring as far as possible (recommended: 10 cm or more).
Never install them in the same wire duct. When crossing the control circuit wiring with the main circuit wiring, ensure they
are mounted perpendicular to ach other.
3.5 Setting up the slide switches
Before changing the switches, turn OFF the power and wait more than five minutes. Make sure that the LED monitor is turned OFF.
Also, make sure, using a multimeter or a similar instrument, that the DC link bus voltage between the terminals P (+) and N (-) has
dropped below the safe voltage (+25 VDC).
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.
Setting up the slide switches
Switching the slide switches located on the control PCB and interface PCB allows you to customize the operation mode of the analogue
output terminals, digital I/O terminals, and communications ports. The locations of those switches are shown in Figure 2.22.
To access the slide switches, remove the terminal cover and keypad. Table 3.3 lists function of each slide switch.
For details on how to remove the terminal cover, refer to Section 3.1, "Removing the terminal cover and main circuit terminal
block cover."
Table 3.3 Function of Each Slide Switch
Slide Switch Function
SW1
Switches the service mode of the digital input terminals between SINK and SOURCE.
▪ To make the digital input terminal [X1] to [X5], [FWD] or [REV] serve as a current sink, turn SW1 to the SINK
position. To make them serve as a current source, turn SW1 to the SOURCE position. Factory default: Source
SW3
Switches the terminating resistor of RS-485 communications port on the inverter on and off.
▪ 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.
SW6
Switches the output mode of the output terminal [FM] between analogue voltage and pulse output.
When changing this switch setting, also change the data of function code F29.
SW6 Data for F29
Analogue voltage output (Factory default) FMA 0
Pulse output FMP 2
SW7
SW8
Switches property of the input terminal [C1] for C1, V2, or PTC.
When changing this switch setting, also change the data of function code E59 and H26.
SW7 SW8
Data for
E59
Data for
H26
Analogue frequency setting in current (Factory
default)
C1 OFF 0 0
Analogue frequency setting in voltage V2 OFF 1 0
PTC thermistor input C1 ON 0 1
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