Fnet OPTION BOARD
This manual describes about the installation, operation, and precautions of Fnet board
of iS5 series. Read the manual and precautions thoroughly before installation and
operation. If not, it may cause break down of board and shorten the product life.
Do not install the option board when the power is introduced. If not, both of the
inverter and option board may be broke down. (Attach and detach the option
board to the inverter control board after the capacitor discharged)
ESD can cause break down of CMOS components. Do not touch the CMOS
components without the board is grounded.
Do not change the communication cable with the inverter power is turned on.
Make sure to precisely insert the connector of inverter and option board
Make sure the connection of signal wire (P, N). P signal wire must be connected
to the P terminal.
Connect terminal resistor at the last connected option board of 110 ohm, 1/2
watt. (refer to Figure 6)
Check the parameter unit when setting the parameters.
Fnet board provides control and monitoring of iS5 series inverter for GLOFA PLC via
high-speed serial communication. The communication protocol is programmed with
1.1. Benefits of using Fnet board
It is possible to control the inverter with high-speed communication of 1M BPS.
Easy installation and change of a system because the control and monitoring of
inverter is accomplished by PLC programming.
Multiple inverters can be connected only with 2 line wires, providing time saving
and easy maintenance.
Easy system integration by using PLC related devices.
1.2. Contents included
Fnet option consists 1 Fnet board, 2 connectors, 3 supporters, and manual.
2. Configuration and Installation
Comm. Wire Terminal Block
2.1.1. Comm. Wire Terminal Blcok
* Two sets of "S", "P", "N" signal is connected in parallel respectively.
* Connect terminal resistor at the last connected inverter between terminal P and N.
(refer to Figure 6.)
2.1.2. Frame Ground
Frame Ground is connected to the ground of inverter.
RX TX ERR OP
S P N S P N
Figure 1. Board Configuration
Figure 2. Comm. Wire Terminal Blcok
Comm. Signal Wiring (P)
Comm. Signal Wiring (N)
2.1.3. Display LED
Figure 3. Display LED
ON during receiving
ON during transmitting
ON when there is frame error
Flickering by every 1 sec
Fnet Comm. trouble
Flickering by every 500 msec
Flickering by every 2 sec
2.2. Installing on Inverter Board
Unscrew the crews that fasten the inverter board and install the copper
Install the Fnet board by inserting the connector of inverter and Fnet board and
tighten the screws that unscrewed from the inverter board.
Figure 4. Installing Fnet board on Inverter board
3. System Configuration
⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅
Figure 5. Example of System Configuration
3.1. Connection between PLC (FUEA) and Inverter (iS5)
Figure 6. Wiring
4. Comm. Specification
1 M bps
Manchester Biphase-L, Frame Synchronous method
Twisted Pair Shielded Cable, Dedicated cable
Cable Type: LIREV-AMESB 1φ φ φ φ (PC 717 6705),
Manufacturer: LG Cable
Max. 64 per line
Max. 750 m
Field Bus(IEC TC65 / SC65C / WG6 65C 90.8)
5.1. Power On Test
Turn on the inverter power after installing the option boar, and then inverter perform
Power On test.
First Op LED starts flickering and Err LED, Tx LED, Rx LEDs flickers at interval of 250ms.
COM▶ ▶ ▶ ▶
5.2. Setting Inverter Parameter
Set inverter parameters described below using keypad.
5.2.1. Checking Option board [COM group/code# 01: PLC-GF]
This parameter checks the option board installed on inverter board. This code must
5.2.2. Setting Inverter Number [COM group/code# 17: 0 ~ 63]
This parameter sets the station number of inverter. Inverter number must match
the station number set in PLC. Setting a same number at more than one inverter
cause communication error.
COM▶ ▶ ▶ ▶ Station ID
5.2.3. Setting Option Mode [COM group/code# 02]
Set the mode of Fnet board.
COM▶ ▶ ▶ ▶
Inverter is controlled by keypad or control terminal instead Fnet board.
Inverter takes just run commands of Forward Run, Reverse Run, and Stop
from the Fnet board.
Inverter takes just frequency command from the Fnet board.
Cmd + Freq
Inverter takes all commands from the Fnet board.
5.2.4. Setting Lost Command [I/O group/code# 48]
This parameter set the actions of inverter ahead when the communication is
disconnected (timeout) by some reasons such like DPRAM error, cable cutting.
I/O▶ ▶ ▶ ▶ Lost command
<In case of "timeout" error >
None: Inverter keeps the command that just have before the disconnection
FreeRun: Inverter stops with FreeRun (Coast to stop).
Stop: Inverter stops with the deceleration ramp set at FU1 # 06.
5.2.5. Setting timeOut [I/O group/code# 49]
This Parameter sets the time that inverter decides disconnection of communication.
Inverter takes actions of Lost Command after this set time.
I/O▶ ▶ ▶ ▶
Default value is 1 second.