Lust CDA3000 - Page 229

Application Manual CDA3000
5-115
5 Software functions
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Parameters for Master/-Slave operation
Attention: Digital output OSD01 has no function in the slave inverter
module, and cannot be used as the master for other slaves.
Example of coupling factor MSFCT
Input of coupling factor in parameter 837-MSFCT
given: i = 2.032
à 837-MSFCT=2.032
tot: Execute value of coupling factor with internal processing of
processor
1. 2.032 x 65536 = 133169.152
2. Eliminate decimal places: 133169
3. 133169 : 65536 = 2.0319
Parameter Function Value range FS Unit Online
837-MSFCT
Coupling factor for Master/-Slave opera-
tion
0.0 ... 1000, 000000 1

838-MSECT
Error trigger time in case of failure of
reference master
0 ... 65535 0 ms

Table 5.73 Parameters from subject area _66MS Master/-Slave operation
Explanatory notes
• A maximum of 6 devices can be interlinked.
• In the event of failure of the reference input from the master, or if the
reference signal checksum is faulty, the slave inverter responds
after the set time in parameter 838-MSECT by stopping the slave
inverter.
• When the time period from 838-MSECT starts a warning message
can be delivered. For this, the relevant function selector of the dig-
ital output must be set to the warning message WFDIG.
• Fast reference coupling is limited to output OSD01 and input ISD01.
• The coupling factor MSFCT is represented in INT 32Q16 number
format.
That means that the decimal places are represented at a pitch of
65536.