InteliLite
NT
AMF26-P, SW version 2.4, ©ComAp – January 2016 97
AMF26-P-2.4 Reference Guide.pdf
Alternate Cfg
Config Switch [MANUAL/AutDetect/BinSelect]
Configuration detection switch. Value of this setpoint cannot be changed when gen-set is running (since
prestart period), setpoint adjustment is taken into account only when gen-set is stopped.
MANUAL: Nominal values of the gen-set are defined by setpoints in Basic Settings group
AutDetect: Nominal values of the gen-set are chosen from Alternate Cfg group during gen-set starting
procedure. Autodetection process is described below.
BinSelect: Nominal values of the gen-set are chosen based on AltCfgSwitch binary inputs
combination.
Autodetection process of configuration within Alternate Cfg group
There are three groups of nominal values. The valid nominal values configuration is evaluated during gen-set
starting procedure (just after MinStabTO elapses) in case Config Switch parameter is set to AutDetect.
1) First detection of connection type is made. There are 3 possible groups: a) Mono Ph, b) Split Ph or c)
3Ph4Wire / 3Ph3Wire. Every phase with Gen V < 40V is taken as phase without voltage. When there is no
suitable connection type found (within 3 Alternate Cfg groups) then autodetection fail is announced
(GAutDtcFail / MAutDetecFail). In case suitable Connection Type is found autodetection process proceeds to
the 2nd step.
2) Detection of nominal voltage. When the measured voltage is within +/- 10V of the nominal voltage of
respective group (where suitable Connection Type was found) then this configuration group is considered as
the valid configuration group and all the nominal values from this group are taken as valid nominal values
(and these values are then copied to the Basic Settings group). When there is more groups which fit to this
criteria then the one with the lowest ordinal number is chosen.
Autodetection procedure:
A) Detection is first made on Mains side. Once the detection is finished either one configuration is chosen
(then one of the following messages AlterCfg 1 Act, AlterCfg 2 Act or AlterCfg 3 Act is written to the history
and CONFIGURATION 1, 2 or 3 output is activated) or there is a Mains autodetection fail (MAutDetecFail).
B) Then in case MAN mode is active the controller is waiting for manual request for the gen-set start and in
the meantime is periodically checking Mains status. In case the controller is in AUT mode gen-set start
request is automatically issued.
C) Once the gen-set is started (regardless if in MAN or AUT mode) autodetection on gen-set side is started.
Autodetection on gen-set side is made during every gen-set start regardless previous (successful or
unsuccessful) autodection made on Mains side.
Mains status is periodically checked and controller tries to make detection on Mains side all the time unless
the detection on gen-set side is successfully finished.
D) Once the detection on gen-set side is finished either one configuration is chosen (AlterCfg 1 Act, AlterCfg
2 Act or AlterCfg 3 Act written to the history and Configuration 1, 2 or 3 output is activated) or there is a gen-
set autodetection fail (Sd GAutDtcFail) and gen-set is shuted down.
Once the autodetection procedure is successfully finished values from chosen configuration group in
Alternate Cfg group are written to the Basic Settings group. The nominal values can be changed then either
from Alternate Cfg group (within the chosen group) or from Basic Settings group. When you change the
values either in Alternate Cfg chosen group or in Basic Settings the setpoints’ values are automatically
changed in both groups simultaneously (till new gen-set start request when new evaluation is started).
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