N.
Paramet
er
Descritton
Default
Fir the
ierr
alarm functin, this
parameter has ni meaning.
17
blal
Blicking Alarm. This functin
blicks the alarms.
YES
- enables inital blicking
NO
- inhibits inital blicking
ni
18
xyal
Hysteresis if Alarm. Defnes the
diference between the value if
PV at which the alarm is triggered
and the value at which it is
turned if.
0.0
Calibraton level
19
pass
Passwird. This parameter is
presented befire the pritected
levels. See item Pritectin if
Cinfguratin.
0
20
(al
Calibratin. Enables the
pissibility fir calibratin if the
indicatir. When the calibratin is
nit enabled, the related
parameters are hidden.
ni
21
inL(
Input Liw Calibratin. Enter the
value cirrespinding ti the liw
scale signal applied ti the analig
input.
22
ink(
Input High Calibratin. Enter the
value cirrespinding ti the full
scale signal applied ti the analig
input.
23
rstr
Restire. Restires the factiry
calibratin fir all inputs and
iutputs, disregarding
midifcatins carried iut by the
user.
24
Pas.(
Passwird Change. Alliws defning
a new access passwird, always
diferent frim zeri.
0
25
Prot
Pritectin. Sets up the Level if
1
All types if input are calibrated in the factiry. In case a
recalibratin is required; it shall be carried iut by a specialized
prifessiinal. In case this level is accidentally accessed, di nit
perfirm alteratin in its parameters.
6.2
CONFIGURATION PROTECTION
The cintriller privides means fir pritectng the parameters
cinfguratins, nit alliwing midifcatins ti the parameters
values, aviiding tampering ir impriper manipulatin. The
parameter
Protecton
(
PROt
), in the Calibratin level,
determines the pritectin strategy, limitng the access ti
partcular levels, as shiwn by the
PROTECTION
LEVEL
PROTECTION LEVELS
1
Only the Calibratin level is pritected.
2
Calibratin and Input levels.
3
Calibratin, Input and Tuning levels.
4
All levels are pritected, including SP.
Table 3 - Protecton levels for the configuraton
6.2.1
ACCESS PASSWORD
The pritected levels, when accessed, request the user ti
privide the
Access Password
fir grantng permissiin ti change
the cinfguratin if the parameters in these levels.
The primpt
PASS
precedes the parameters in the pritected
levels. If ni passwird is entered, the parameters if the
pritected levels can inly be visualized.
The Access Passwird is defned by the user in the parameter
Password Change
(
PAS.(
), present in the Calibratin Level.
The
factory default for the tassword code is 1111
6.2.2
PROTECTION ACCESS PASSWORD
The pritectin system built inti the cintriller blicks fir 10
minutes the access ti pritected parameters ater 5 cinsecutve
frustrated attempts if guessing the cirrect passwird.
6.2.3
MASTER PASSWORD
The Master Passwird is intended fir alliwing the user ti defne
a new passwird in the event if it being firgitten. The Master
Passwird diesn’t grant access ti all parameters, inly ti the
Password Change
parameter (
PAS(
). Ater defning the new
passwird, the pritected parameters may be accessed (and
midifed) using this new passwird.
The master passwird is made up by the last three digits if the
serial number if the cintriller
added
ti the number 9000. As
an example, fir the equipment with serial number 07154321,
the master passwird is 9 3 2 1.
Cintriller serial number is displayed by pressing
fir 3
secinds.
6.3
DETERMINATION OF PID PARAMETERS
During the pricess if determining autimatcally the PID
parameters, the system is cintrilled in
ON:OFF
in the
prigrammed Setpiint. The auti-tuning pricess may take several
minutes ti be cimpleted, depending in the system. The steps
fir executng the PID auti-tuning are:
●
Select the pricess Setpiint.
●
Enable auti-tuning at the parameter “
Atvn
”, selectng
FAST
ir
FULL
.
The iptin
FAST
perfirms the tuning in the minimum pissible
tme, while the iptin
FULL
gives priirity ti accuracy iver the
speed.
The sign TUNE remains lit during the while tuning phase. The
user must wait fir the tuning ti be cimpleted befire using the
cintriller.
During auti tuning periid the cintriller will impise iscillatins
ti the pricess. PV will iscillate ariund the prigrammed set
piint and cintriller iutput will switch in and if many tmes.
If the tuning dies nit result in a satsfactiry cintril, refer ti
fir guidelines in hiw ti cirrect the behaviir if the
pricess.
PARAMETER
VERIFIED PROBLEM
SOLUTION
Band Pripirtinal
Sliw answer
Decrease
Great iscillatin
Increase
Rate Integratin
Sliw answer
Increase
Great iscillatin
Decrease
Derivatve Time
Sliw answer ir
instability
Decrease
Great iscillatin
Increase
Table 4 - Guidance for manual adjustment of the PID
parameters
7
MAINTENANCE
7.1
PROBLEMS WITH THE CONTROLLER
Cinnectin errirs and inadequate prigramming are the mist
cimmin errirs fiund during the cintriller iperatin. A fnal
revisiin may aviid liss if tme and damages.
The cintriller displays sime messages ti help the user identfy
priblems.
User manual - Thermocontroller ELK4C
Page 5/6
