Serial Communication - Danfoss VLT 2800 Manual

Serial communication

500 Address
(BUS ADDRESS)
Value:
Parameter 500 Protocol = FC protocol [0]
0 - 247
Parameter 500 Protocol = Metasys N2 [1]
1 - 255
Parameter 500 Protocol = MODBUS RTU [3]
1 - 247
Function:
This parameter allows the allocation of an address to
each frequency converter in a serial communication
network.
Description of choice:
The individual frequency converter must be allocated
a unique address.
If the number of units connected (frequency converters
+ 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)
600 Baud (600 BAUD)
1200 Baud (1200 BAUD)
2400 Baud (2400 BAUD)
4800 Baud (4800 BAUD)
9600 Baud (9600 BAUD)
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 frequency converter's transmission speed must
be set at a value corresponding to the transmission
speed of the master.
Parameter 501 Baudrate cannot be selected via the
serial port, but must be preset via the operating unit.
= factory setting, () = display text, [] = value for use in communication via serial communication port
122
502 Coasting Stop
(COASTING SELECT)
Value:
Digital input (DIGITAL INPUT)
Serial port (SERIAL PORT)
Logic and (LOGIC AND)
1
Logic or (LOGIC OR)
1
Function:
Parameters 502-508 allow a choice between control-
1
ling the frequency converter 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].
NB!
Note that Coasting stop and Bit 03 in the
control word are active at logic '0'.
Digital input [0]
Dig. input
0
[0]
0
[1]
1
1
[2]
[3]
Serial port [1]
Dig. input
[4]
0
[5]
0
1
1
Logic and [2]
Dig. input
0
0
1
1
Logic or [3]
Dig. input
0
0
1
1
MG.27.E2.02 - VLT is a registered Danfoss trademark
Ser. port Function
0 Coasting
1 Coasting
0 Motor running
1 Motor running
Ser. port Function
0 Coasting
1 Motor running
0 Coasting
1 Motor running
Ser. port Function
0 Coasting
1 Motor running
0 Motor running
1 Motor running
Ser. port Function
0 Coasting
1 Coasting
0 Coasting
1 Motor running
[0]
[1]
[2]
[3]