2.2.1 Start-up of the Frequency Converter
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: Setting:
Par. 8-30 Protocol
[3] Metasys N2
Par. 8-31 Address
1 (Default)
Par. 8-32 Baud Rate
[2] 9600 Baud (fixed at 9600 for
N2 protocol)
Par. 8-50 Coasting Select
[3] Logic OR
Par. 8-52 DC Brake Select
[3] Logic OR
Par. 8-53 Start Select
[3] Logic OR
Par. 8-54 Reversing Select
[0] Digital input
Par. 8-55 Set-up Select
[3] Logic OR
Par. 8-56 Preset Reference Select
[3] Logic OR
Par. 8-94 Bus Feedback 1
0
Par. 8-95 Bus Feedback 2
0
NOTE
Send an F command to begin communications between
the master and the drive
Example 1:
F command
Setting:
Device address XX
Char1 command F
Checksum YY
Telegram code:
>XXFYY <CR>
Issue a run command through the master, to the device:
Example 2:
Bus
start, BO override command: Setting:
Device address XX
Char1 command 7
Char1 subcommand 2
Char2 region 04
Char2 object number (NPA) 04 (Start)
Char2 override value 01 (Active)
Checksum YY
Telegram code:
>XX72040401YY <CR>
Issue a frequency reference through the master, to the device:
Example 3:
Over-ride analog output, speed
(50%) change command:
Setting:
Device address XX
Char1 command 7
Char1 subcommand 2
Char2 region 03
Char2 object number (NPA) 00
Char8 override value * 4E 00 00 00 override value = 50%
speed (IEEE floating point,
format)
Checksum YY
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:
Setting:
Device address XX
Char1 command 7
Char1 subcommand 2
Char2 region 04
Char2 object number (NPA) 04 (Start)
Char8 override value * 00 (Not active)
Checksum Y
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.
Instructions
VLT
®
Metasys
14 MG.11.G2.02 - VLT
®
is a registered Danfoss trademark
22
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