Serial communication
500 Address
(BUS ADDRESS)
Value:
Parameter 500 Protocol = FC protolkol [0]
0 - 247
1
Parameter 500 Protocol = Metasys N2 [1]
1 - 255
1
Parameter 500 Protocol = MODBUS RTU [3]
1 - 247
1
Function:
This parameter allows the allocation of an address to
each variable frequency drive in a serial communica-
tion network.
Description of choice:
The individual variable frequency drive must be allo-
cated a unique address.
If the number of units connected (variable frequency
drives + master) is higher than 31, a repeater must be
used.
Parameter 500 Address cannot be selected via the
serial communication, but must be preset via the con-
trol unit.
501 Baudrate
(BAUDRATE)
Value:
300 Baud (300 BAUD) [0]
600 Baud (600 BAUD) [1]
1200 Baud (1200 BAUD) [2]
2400 Baud (2400 BAUD) [3]
4800 Baud (4800 BAUD) [4]
9600 Baud (9600 BAUD) [5]
Function:
This parameter is for programming the speed at which
data is transmitted via the serial port. Baud rate is de-
fined as the number of bits transmitted per second.
Description of choice:
The variable frequency drive's transmission speed
must be set at a value corresponding to the transmis-
sion speed of the master.
Parameter 501 Baudrate cannot be selected via the
serial port, but must be preset via the operating unit.
502 Coasting Stop
(COASTING SELECT)
Value:
Digital input (DIGITAL INPUT) [0]
Serial port (SERIAL PORT) [1]
Logic and (LOGIC AND) [2]
Logic or (LOGIC OR) [3]
Function:
Parameters 502-508 allow a choice between control-
ling the adjustable frequency drive via the digital inputs
and/or via the serial port.
If Serial port [1] is selected, the relevant command can
only be activated if a command is given via the serial
port.
In the case of Logic and [2] the function must also be
activated via a digital input.
Description of choice:
The table below shows when the motor is running and
when it is coasting, when each of the following is se-
lected: Digital input [0], Serial port [1], Logic and [2] or
Logic or [3].
NOTE
Note that Coasting stop and Bit 03 in the
control word are active at logic '0'.
Digital input [0]
Dig. input
Ser. port Function
0 0 Coasting
0 1 Coasting
1 0 Motor running
1 1 Motor running
Serial port [1]
Dig. input
Ser. port Function
0 0 Coasting
0 1 Motor running
1 0 Coasting
1 1 Motor running
Logic and [2]
Dig. input
Ser. port Function
0 0 Coasting
0 1 Motor running
1 0 Motor running
1 1 Motor running
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
84 MG.27.A2.22 - VLT
®
is a registered Danfoss trademark
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