Connection Notes - Fuji Electric FRENIC-AQUA series User Manual

2.2.2

Connection notes

This section describes the knowledge necessary for connecting with a host.
[ 1 ] RJ-45 connector (modular jack) pin layout
To facilitate connection with a standard device,
the RJ-45 connector (for keypad connection) on
the inverter unit has two pairs of pin arrays
conforming to the 4-pair arrangement. DX- and
DX+ signals are assigned to pins 4 and 5,
respectively.
- The RJ-45 connector has the pins
connected to the keypad power
supply (pins 1, 2, 7 and 8) and a
reserved pin (pin 3). When
connecting the inverter with a
device such as other inverters via a
communications cable, take care
not to connect the wiring of the
device to those pins assigned to the
power supply. Use signal lines (pins
4 and 5) only.
- To connect the FRENIC series of inverters to the same communications network
on which the FVR-E11S series exists, pins 3 to 5 must be changed using a
connection cable, etc. Table 2.3 makes a comparison of pin layouts between the
FRENIC series and the FVR-E11S series.
- The RJ-45 connector has the pins connected to the keypad power supply (pins 1, 2, 3, 7
and 8). When connecting the inverter with a device such as other inverters via a
communications cable, take care not to connect the wiring of the device to those pins
assigned to the power supply.
- If the communications circuit is connected with FVR-E11S series, there is a possibility that
the power circuit is shorted or the signal wires collide with each other, resulting in the
damage to the circuit. For details, see Section 2.2.2 "Connection notes."
Failure may occur.
Table 2.3 Comparison of pin layout between the FRENIC series and the FVR-E11S series
FRENIC series
Pin No.
1
2
3
4
5
6
7
8
FVR-E11S series
inverter unit
VCC (+5V)
(keypad selected)
GND
RES
DX-
DX+
NC
GND
VCC (+5V)
Figure 2.5 Pin layout of RJ-45 connector
SEL_TP The power supply is short-circuited
when connected.
GND
DX-
DX+
SEL_ANY
(optional)
GND
The power supply is short-circuited
VCC
when connected.
The power supply is short-circuited
VCC
when connected.
2-10
Remarks