Danfoss Metasys N2 Operating Instructions Manual page 15

Instructions
2.2.1 Start-up of the Frequency Converter
2 2 Use the frequency converter keypad mounted either on the
drive or remote. Use the Extended Menu key to access the 8-**
group parameters (serial communication). The settings shown
below are typical. Some settings may be changed to meet the
application requirements. The settings below will serve as a
good starting reference. Refer to the operating instruction
manual for instructions on changing parameters and program-
ming the drive.
Examples of typical settings. Program the following:
Parameter:
Par. 8-30 Protocol
Par. 8-31 Address
Par. 8-32 Baud Rate
Par. 8-50 Coasting Select
Par. 8-52 DC Brake Select
Par. 8-53 Start Select
Par. 8-54 Reversing Select
Par. 8-55 Set-up Select
Par. 8-56 Preset Reference Select
Par. 8-94 Bus Feedback 1
Par. 8-95 Bus Feedback 2
NOTE
Send an F command to begin communications between
the master and the drive
Example 1:
F command
Device address
Char1 command
Checksum
Telegram code:
>XXFYY <CR>
Issue a run command through the master, to the device:
Example 2:
Bus start, BO override command: Setting:
Device address
Char1 command
Char1 subcommand
Char2 region
Char2 object number (NPA)
Char2 override value
Checksum
14
®
VLT Metasys
Setting:
[3] Metasys N2
1 (Default)
[2] 9600 Baud (fixed at 9600 for
N2 protocol)
[3] Logic OR
[3] Logic OR
[3] Logic OR
[0] Digital input
[3] Logic OR
[3] Logic OR
0
0
Setting:
XX
F
YY
XX
7
2
04
04 (Start)
01 (Active)
YY
®
MG.11.G2.02 - VLT is a registered Danfoss trademark
Telegram code:
>XX72040401YY <CR>
Issue a frequency reference through the master, to the device:
Example 3:
Over-ride analog output, speed
(50%) change command:
Device address
Char1 command
Char1 subcommand
Char2 region
Char2 object number (NPA)
Char8 override value *
Checksum
Telegram code:
>XX7203004E000000<CR>
To calculate override value for speed: refer to Scaling of Bus
Reference and Bus Feedback. Issue an override release
command through the master to the device:
Example 4:
Bus stop, BO over-ride release
command:
Device address
Char1 command
Char1 subcommand
Char2 region
Char2 object number (NPA)
Char8 override value *
Checksum
Telegram code:
>XX72040400YY <CR>
If the preceding commands were issued, the drive should have
accelerated to 50% after the speed reference was issued. After
the override release, the drive should have stopped.
Setting:
XX
7
2
03
00
4E 00 00 00 override value = 50%
speed (IEEE floating point,
format)
YY
Setting:
XX
7
2
04
04 (Start)
00 (Not active)
Y