COMECO RT284U User Manual

Error Messaging
12
Message Parameters Error type
FAiL
all
Incorrect
memory
br"
-
Service
required!
ER01 GrAd
Out of range
ER02 \t
Out of range
ER03 \b
Out of range
ER04 %[L
Out of range
ER05 %[H
Out of range
ER06
%[L, %[H
%[L> %[H
ER11, ER21
ym1, ym2 Out of range
ER12, ER22
y\1, y\2 Out of range
ER13, ER23
HLe1, HLe2
Out of range
ER14, ER24
[e1, [e2 Out of range
ER15, ER25
me1, me2 Out of range
ER16, ER26
%[1, %[2
Out of range
(%[L… %[H)
ER17, ER27
%[
x
- me
x
Lower than
Input
Low Range
Limit
ER18, ER28
%[
x
+ [e
x
Exceeds
Input
High Range
Limit
ER29 Addr
Out of range
♦ In some cases,
RT284U finds
non-conformities
in parameter values
that must be corrected
before operating
at Basic level.
♦ The device indicates
such kind of problems
by displaying
error messages
as given on the left.
♦ If FAiL appears
on the display,
try debugging
by turning
the power off/on.
♦ If the problem persists,
press and hold or
send command error 0
via the communication
interface to restore
the default (factory)
settings.
Parameter Programming
5
Some parameters
are accessible only
when the respective
functionality is installed.
(see 'Specifications').



- Changing
Point Position value
reflects the real value
of all parameters
with ISU!
E.g.: changing
Point Position value
from (х1) to (х0.1)
would change
a Set-point value
of 100 to 10.0!!!
Controller parameters
RT284U is a programmable device whose
service behavior is determined by a set
of parameters. All the parameters, along
with their names, symbols, and value ranges,
are given in Table 1.
Setting numerical parameter value
♦ Enter parameter value adjustment mode
(see 'Program Levels').
♦ The whole part of the value together with
the left zeroes appears on the display,
and the rightmost digit blinks.
♦ To select another digit, press .
♦ The 3 rightmost digits can accept values
from 0
00
0 to 9
99
9, and the leftmost digit
can also accept the values -
--
- and `
``
`.
♦ To increase or decrease the blinking digit
value, use respectively or .
♦ Confirm the adjusted value by pressing
simultaneously + or + .
♦ If the new value has not been confirmed
and no key has been pressed for a certain
period of time, value adjustment
automatically ceases, and the parameter
retains its initial value.
Setting symbolic parameter value
♦ Enter parameter value adjustment mode
(see 'Program Levels').
♦ Read the blinking parameter value.
♦ To change the value, use or ,
and to confirm, press +
or + .
♦ If the new value has not been confirmed
and no key has been pressed for a certain
period of time, value adjustment
automatically ceases, and the parameter
retains its initial value.
Program Levels
8
Basic level
At Basic level, RT284U indicates
the measured input value (PV)
with a resolution, according to
the Point Position parameter.
♦ If the whole part of PV cannot be
entirely displayed, the unit
generates blinking 'overflow'
messages (oL or -oL,
depending on PV sign).
♦ If PV is out of its operating range
(the input range according
to Table 1, extended by 5%
on both sides), the device displays
blinking symbolic messages:
<__> (under-range) or
{++} (over-range).
When PV is out of physical range,
the unit displays ----.
♦ Upon entering Basic level,
RT284U may display
the init message,
indicating that some time
is necessary for filter initialization.
♦ The noiS message may appear
as a result of the peak filter
operation (see 'Input filtration').
♦ To enter parameter value
adjustment mode for Set Point 1,
press and hold until %[1
appears on the display.
To view the Set-point value,
release the key.
♦ To enter parameter value
adjustment mode for Set Point 2,
follow the same procedure,
but start with the key.
Program Levels
9
Parametric level
This level contains the control
algorithm parameters. If no relay output
is installed, this level does not show up.
♦ Enter from Basic level by pressing
and holding until PAr appears
on the display. Release the key.
If the key is not released on time,
RT284U enters Configuration level.
♦ Choose a parameter
using and .
♦ To enter parameter value
adjustment mode, press .
♦ If no key has been pressed
for a while, the device automatically
returns to Basic level, storing all
confirmed changes.
♦ For quick exiting and saving,
use key combination + .
Configuration level
This level contains the configuration
parameters of the device.
♦ Enter from Basic level by pressing
and holding until conF
appears on the display.
♦ To access and adjust
the configuration parameters,
follow the algorithm described
in 'Parametric level'.

COMECO RT284U Specifications

General

Brand	COMECO
Model	RT284U
Category	Controller
Language	English