Beijer Electronics Frequency Inverter BFI-E3
KI00369C 2021-09
www.beijer.se www.beijer.no
www.beijerelectronics.de www.beijerelectronics.com www.beijerelektronik.com.tr
17 (28)
5.14 Control of BFI by Modbus RTU
BFI IP20 has one RJ45 port for Modbus RTU and BFI IP66 has two parallel RJ45 ports. A
Modbus RTU network with BFI-E3, BFI-H3 or BFI-P2 is connected as below:
Settings in BFI are 115 200 bit/sec, 8 data bits, 1 stop bit, No Parity.
Hardware
Function
Comment
CAB 114
Shielded cable with one RJ45 and 3 wires
marked SDA, SDB and SG for
screwterminals.
Cable length 3 m. Modbus RTU- pin7 and Modbus RTU+
pin8 in BFI.
CAB 113
Shielded cable with one RJ45 for BFI and one
9-pole D-sub for X2 panels.
Cable legth 3 m. Built-in 120 ohm resistor in D-sub
between pin7 and pin8.
OPT-2-J45SP-BFI
T-Connection of 2 cables into one BFI IP20. RJ45 to BFI and 2 female RJ45 for network connection
OPT-2-RJTRM-BFI
RJ45 with a 120 ohm resistor.
To be put in the last BFI-splitter.
Para-
meter
Name
Default
settng
Recommended
setting
Function
P-12
Command Source
0
3
3= Control by Modbus RTU and ramptime in P-03 and P-04.
4= Control by Modbus RTU and ramptime sendt by Modbus.
P-14
Parameter Access
0
201
201 = Parameters above P-14 accessable.
P-24
Fast Deceleration time
0
Fast Deceleration ramptime from 0 to 50 Hz.
P-25
Analog Output Funct.
8
13: Analog output controlled via fieldbus
P-36
Communication
Setting
(Power off/on
when parameter has
been changed)
1
Modbus
115,2k
3000
115,2k
3 settings in one parameter.
- Stationnumber 0-63. First Drive should be stationnumber 1.
- Communication speed, 115,2=115.200 bits/sec.
- Communication timeout. 0 = No timeout [msec].
2
1
DI1:
Startsignal
+24 VDC
DI1 must always be closed to start
Modbus master RTU
SG
SDB
BFI
RDB
SDA
RDA
Put termination switch in 120
ohms
8
7
3
1 8
BFI
IP66
CAB 113
Patchcable
Cat 6
Modbus master
X2 HMI
CAB 114
RS485 + Pin1
OPT-2-
RJTRM-
BFI
OPT-2-
J45SP-BFI
RS485
– Pin6
GND Pin5
Modbus master
Nexto Xpress
D+
D-
GND
BFI
IP20
