18
Loc
Parameter lock
If parameter Loc is set to other values than 808, then only field parameters
in the range of 0 to 8 and parameter Loc itself can be set. When parameter Loc
is set to 808, user can set all parameters. Parameter Loc provides several
operation privileges. When user has completed setting some important
parameters such as input and output, parameter Loc can be set to other values
than 808 in order to avoid field operators’ accidental modification of some
important operation parameters. See the following:
1. for AI-518 series instrument
Loc=0,
allowed to modify field parameters and setpoint.
Loc=1,
allowed to view field parameters, and to set setpoint. But the
modification of field parameters (except parameter Loc itself) is not
allowed.
Loc=2,
allowed to display and view field parameters, but the modification
of field parameters and setpoint (except parameter Loc itself) is not
allowed.
Loc=808,
configuration of all parameters and setpoint is allowed.
2. For AI-518P series instrument
Loc=0,
allowed to modify field parameters, program value (time and
temperature value) and program segment number StEP.
Loc=1,
allowed to modify field parameters and StEP value, but the
modification of program is not allowed.
Loc=2,
allowed to modify field parameters, but not allowed to modify StEP
value and program.
Loc=3,
only allowed to modify parameter Loc itself, all other parameters,
program and StEP value can not be modified.
Loc=808,
allowed to set all parameters, program and StEP value.
Note:
that 808 is the password of all AI series instrument. In application the
instrument should be set to other values to protect from modifications of
parameters. Meanwhile the management of production should be enforced to
avoid arbitrary operation.
If Loc is set to other values than the above mentioned, the result may be
one of those above mentioned, and most of them are the same as when loc=1
is set.
If you Set Loc to be 808 during field parameter setting, parameter Loc will
automatically turned to be 0 when you finished setting field parameter. If you
set Loc to be 808 after the parameters are unlocked, parameter Loc will be
saved as 808 permanently.
0
～
9999
EP1
～
EP8
Field
parameter
definition
When parameters are all set, most are not needed to changed and there
maybe damage if wrong parameters are set. Therefore, there is lock function
added. As for AI-518P,you may need to change parts of ramps values or
times,like HIAL,LoAL etc. 1 to 8 field parameters can be defined by parameters
EP1to EP8. If the number of the field parameters is less than 8, the first idle
EP parameter should be set to “nonE”. Loc=0.EP2=LoAL, EP3=HdAL,
nonE
~run
5.2 Additional Remarks of Special Functions
5.2.1 Time proportional output(oP1=0)
Usually it’s by relay or SSR output voltage high and low proportion to realise the output change. CtL is like
control period. Output is 0%~100%. As for relay output, it’s better set in 20~40seconds, so as to protect
relay life. As for ssr output, it’s better set 0.5~1second so as to achieve best control result. E.g: if want to
make output 20% ~60%, you can set oPL=20,oPH=60. Usually the output is default as oPL=0,oPH=100. No
output limit.
