Pentair Biffi ICON 2000 - Page 33

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BIFFI ICON 2000
InstructIon and operatIng manual
The curves below may better clarify the above
option:
Example A
With input signal = 4 mA, the position request
is0%andtheactuatorisdriventoclose.With
input signal = 20 mA, the position request is
100%andtheactuatorisdriventoopen.With
input signal = 12 mA the position request
is50%andtheactuatorisdriventoreach
position50%.
Example B
With input signal < 8 mA, the position request
is0%andtheactuatorisdriventoclose.With
input signal = 16 mA, the position request is
100%andtheactuatorisdriventoopen.With
input signal = 12 mA the position request
is50%andtheactuatorisdriventoreach
position50%.
Example C
With input signal = 4 mA , the position request
is100%andtheactuatorisdriventoopen.With
inputsignal=20mA,thepositionrequestis0%
and the actuator is driven to close. With input
signal=12mAthepositionrequestis50%and
theactuatorisdriventoreachposition50%.
Example D
With input signal < 8 mA, the position request
is100%andtheactuatorisdriventoopen.With
inputsignal=16mA,thepositionrequestis0%
and the actuator is driven to close. With input
signal=12mAthepositionrequestis50%and
theactuatorisdriventoreachposition50%.
EXAMPLE A
Positionrequest%
Input signal
4 20 mA
Configured values:
%min=0%
%max=100%
Polarity : 4 mA = CL
EXAMPLE B
Positionrequest%
Input signal
4 8 16 20 mA
Configured values:
%min=25%
%max=75%
Polarity : 4 mA = CL
EXAMPLE C
Positionrequest%
Input signal
4 20 mA
Configured values:
%min=0%
%max=100%
Polarity : 4 mA = OP
EXAMPLE D
Positionrequest%
Input signal
4 8 16 20 mA
Configured values:
%min=25%
%max=75%
Polarity : 4 mA = OP
Configuration procedure
•MovethelocalselectortoOFFandthen
simultaneously press OPEN and STOP. Select
the language and then enter the password
according to the instructions (see Entering
the set-up mode). When the message
displayedis“SET-UPMODEOK?”press
YES. Press YES to select the actuator set-up
menu, press NO to scroll the list of available
routines and then press YES to select
POSITIONER.
•PressYESiftheconfiguredvalueofthe
Dead Band is correct (from “position
resolution%”to25.5%),orpressNOto
change it, then press YES.
•PressYESiftheconfiguredvalueofthe
Polarity is correct (4 mA=CL or 4 mA=OP), or
press NO to change it, then press YES.
•PressYESiftheconfiguredvalueofthe
Motion Inhibit Time is correct (from 1 to
255 sec), or press NO to change it, then
press YES.
•PressYESiftheconfiguredvalueofthe
%MINiscorrect(from0to75%),orpressNO
to change it, then press YES. The standard
value is 0.
•PressYESiftheconfiguredvalueofthe
%MAXiscorrect(from25to100%),or
press NO to change it, then press YES. The
differencebetween%MAXand%MINshould
begreaterthan25%.Thestandardvalue
is 100.
9.1.8 Fail Safe
This function configures the actuator action in
case of loss of the 4-20 mA input or bus signals.
This action only takes place if the local selector
is in REMOTE and if the positioning function or
the bus interface are active. When the 4-20 mA
or bus signal is restored, the ICON 2000
resumes its normal functioning. The Interlock
and ESD controls override the Fail Safe action
according to the following diagram:
OP/CL controls
Lowest priority Highest priority
Fail Safe action Interlocks ESD
The following options can be configured:
-Action:open,close,stay-put,gotoposition%,
no action (OFF).
- Delay: time before than the Fail Safe action
takes place.