Beijer Electronics Frequency Inverter BFI-P2
KI00306B 2020-03
www.beijer.se www.beijer.no www.beijer.dk
www.beijerelectronics.com www.beijerelectronics.de www.beijerelektronik.com.tr
17 (31)
5.10 Control from a Modbus RTU master
A Modbus RTU network with BFI-E3, BFI-H3 or BFI-P2 is connected as below:
Settings in BFI-P2 are speed setting is 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 serial cables into one drive.
RJ45 male to BFI and 2 female RJ45 for network connection
OPT-2-RJTRM-BFI
RJ45 with a 110 ohm resistor.
To be put in the last BFI-splitter.
Para-
meter
Name
Default
settng
To be set
Function
P1-12
Command Source
0
4
4= Control by Modbus RTU
P1-14
Parameter Access
0
201
Get access to parameter group 5
P5-01
Drive Fieldbus Adress
0
Stationnumber 0-63. First Drive should be stationnumber 1
P5-03
Baud Rate
115,2
9,6, 19,2, 38,4, 57,6 or 115,2 = kbs
P5-04
Data Format
0
0 or "n-1”: No Parity, 1 stop bit 1 or “n-2”: No parity, 2 stop bits
2 or “0-1”: Odd parity, 1 stop bit 3 or “E-1”: Even parity, 1 stop bit
P5-05
Comm Loss Timeout
1,0
Drive behaviour if a communication command is not received within
specified time.Type of reaction set in P5-06. 0 = trip never will occur
P5-06
Comm Loss Action
0
0: Trip and coast to stop 1: Ramp to stop and trip;
2: Ramp to stop and no trip 3: Preset speed 8 (P2-08)
P5-07
Fieldbus Ramp Ctrl
0
Decides which ramps for accelearation and deceleration to be used.
0: From parameters; 1: From Modbus/RTU
P5-15
Modbus Response delay
0
Defines a response delay from the BFI of a Modbus telegram. Entered
value defines a delay of characters.
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 ohm
8
7
3
1 8
BFI
IP20
CAB 113
Patchcable
Cat 6
Modbus master
X2 panel
CAB 114
RS485 + Pin1
OPT-2-
RJTRM-
BFI
OPT-2-
J45SP-BFI
RS485 – Pin6
GND Pin5
Modbus master
Nexto Xpress
D+
D-
GND
BFI
IP66