MODBUS LITE V5.01 parameter specification

MODBUS parameters "ebm-papst series 84 / 112 / 150 / 200"
_______________________________________________________________________________________
ebm-papst Mulfingen GmbH & Co. KG
Bachmühle 2 ·74673 Mulfingen, Germany ·Phone: [phone] ·Fax: [phone] ·www.ebmpapst.com ·[e-mail]
DocNo.: 634505DocNo.: 446144DocNo.:358982DocNo.:322523DocNo.:309753DocNo.:303997DocNo.:276241DocNo.:256078DocNo.:196392 ·Template: 2 dated 6 October 2003 ·File: ext001157859.doc ·Last printed 10/03/2015 15:13:00
·Page 51 of 70
Form 1003
2.33 Shedding function
Address of shedding function : D150
Write authorisation : ebm-papst, customer
Address for maximum starting modulation level : D151
Write authorisation : ebm-papst
Address for number of startup attempts : D152
Write authorisation : ebm-papst, customer
Encoding:
a) Shedding function
Value
Shedding function
0
Inactive
1
Active
The MSB is of no relevance!
Permitted value range: 0 to 1
b) Maximum starting modulation level
%100
256
[%] 
bytes Data
level modulation startingMax.
The MSB is of no relevance!
c) Number of startup attempts
bytes Dataattempts startupof Number 
The MSB is of no relevance!
Function:
The shedding function is intended to enable a fan with fan blades that have frozen into place to shed the
motor free by attempting to start the fan in both directions in alternation; during this process, the modulation
level is increased during each attempt.
The first attempt begins with the value specified under starting modulation level (see 2.20 Starting modulation
level) and the desired direction of rotation. If this does not succeed in getting the fan rotating, during each
additional attempt, the direction of rotation is reversed and the starting modulation level is increased by 5%, to
a value no higher than that specified in "Maximum starting modulation level". At the same time, a shedding
function warning is generated (see 3.10 Warning).