Fuji Electric FRENIC-Multi - Page 16

Chapter 3: Wiring
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12
[PLC]
PLC
signal
power
Connects to PLC output signal power supply.
(Rated voltage: +24 VDC (Maximum 50 mA DC): Allowable range: +22 to +27 VDC)
This terminal also supplies a power to the circuitry connected to the transistor output terminals [Y1] and [Y2]. Refer
to "Analogue output, pulse output, transistor output, and relay output terminals
" in this Section for more information.
[CM]
Digital
input
common
Two common terminals for digital input signal terminals
These terminals are electrically isolated from the terminals [11]s and [CMY].
 Using a relay contact to turn [X1], [X2], [X3], [X4], [X5], [FWD], or [REV] ON or OFF
Figure 3.10 shows two examples of a circuit that uses a relay contact to turn control signal input [X1], [X2], [X3], [X4], [X5],
[FWD], or [REV] ON or OFF. In circuit (a), the slide switch SW1 has been turned to SINK, whereas in circuit (b) it has been
turned to SOURCE.
Note: To configure this kind of circuit, use a high quality relay.
(Recommended product: Fuji control relay Model HH54PW)
PLC
CM
6.3kΩ
SOURCE
SINK
X1～X5,
FWD,REV
DC+24V
SW1
PLC
CM
6.3kΩ
SOURCE
SINK
X1～X5,
FWD,REV
DC+24V
SW1
(a) With the switch turned to SINK (b) With the switch turned to SOURCE
Figure 3.10 Circuit Configuration Using a Relay Contact
 Using a programmable logic controller (PLC) to turn [X1], [X2], [X3], [X4], [X5], [FWD], or [REV] ON or OFF
Figure 3.11 shows two examples of a circuit that uses a programmable logic controller (PLC) to turn control signal input [X1],
[X2], [X3], [X4], [X5], [FWD], or [REV] ON or OFF. In circuit (a), the slide switch SW1 has been turned to SINK, whereas in
circuit (b) it has been turned to SOURCE.
In circuit (a) below, closing or opening the transistor's open collector circuit in the PLC using an external power supply turns
ON or OFF control signal [X1], [X2], [X3], [X4], [X5], [FWD], or [REV]. When using this type of circuit, observe the following:
- Connect the + node of the external power supply (which should be isolated from the PLC's power) to terminal [PLC] of the
inverter.
- Do not connect terminal [CM] of the inverter to the common terminal of the PLC.
DC+24V DC+24V
(a) With the switch turned to SINK (b) With the switch turned to SOURCE
Figure 3.11 Circuit Configuration Using a PLC
 For details about the slide switch setting, refer to Section 3.5, "Setting up the slide switches".