(2) Digital input terminals (FWD, REV, X1 to X9 and CM)

Digital input terminals (e.g., FWD, REV, X1 to X9) are generally turned on or off by connecting or disconnecting the line to or from the CM terminal. If Digital input terminals are turned on or off by switching the open collector output of PLC using an external power supply, a resulting bypass circuit may cause the inverter to malfunction.

To prevent a malfunction, connect the PLC terminal as shown in Fig. 2-3-14.

When using a contact input, a relay having highly reliable contact must be used.

Example: Fuji Electric Control Relay:HH54PW

Programmable

Logic controller

Fig. 2-3-14

Connection for External power supply

(3)Transistor output terminals (Y1 to Y4, CME)

To connect a control relay, connect a surge absorbing diode to both ends of its exciting coil.

(4)Others

To prevent a malfunction as a result of noise, control terminal cables must be placed as far as possible from the main circuit cables.

The control cables inside the inverter must be secured to prevent direct contact with live section (e.g., main-circuit terminal block) of the main circuit.

 

 

 

 

 

Control lines generally do not have enhanced insulation. If the insulation of a

 

 

WARNING

control line is damaged, the control signals may be exposed to high voltage in the

 

 

main circuit. The Low Voltage Directive in Europe also restricts the exposure to

 

 

 

 

 

high voltage.

 

 

 

 

 

Electric shock may result

 

 

CAUTION

The inverter, motor, and cables generate noise.

 

 

Check that the ambient sensors and devices do not malfunction.

 

 

 

 

 

Accident may result.

(5)Wiring of control circuit (inverter of 40HP or more)

Pull out the control circuit wiring along the left panel as shown in Fig. 2-3-15.

Secure the cable to cable binding hole A (on the left wall of the main circuit terminal block) using a cable-tie (e.g., insulock). The cable-tie must not exceed 0.14inch (3.5mm) in width and 0.06inch (1.5mm) in thickness.

When the optional PC board is mounted, the signal lines must be secured to cable binding hole B.

 

Fig. 2-3-16 The securing positions of the

 

control-circuit line of inverter

Fig. 2-3-15 The wiring route of the control circuit

(40HP or more)

 

 

2-15

Page 27
Image 27
Fuji Bikes 5000G11S/P11S Digital input terminals FWD, REV, X1 to X9 and CM, Transistor output terminals Y1 to Y4, CME