The sequence of thresholds
“SEt P”
and
“SEt P2”
can be set in any order, due to the control of relay
outputs is done depend on difference between thresholds values
(zone A)
and outside of threshold
values
(zone B)
.
If particular parameter has been changed and confirmed in quick view mode, its new value is
displayed in alternating mode with parameter name by few seconds. Confirmed changes may be
checked or user can switch viewed parameter pressing
[^]
or
[v]
button.
Figure 6.8 presents the principle of relay outputs operation for two thresholds mode, and an example values
of other parameters. In this mode parameter
“SEt P2”
is accessible in common with
“SEt P2”
, this parameter
describes a second threshold of the relay output. The parameters
“HYSt”
,
“modE”
,
“t on”
,
“t oFF”
,
“unit”
and
“ALArmS”
are connected with both
“SEt P”
and
“SEt P2”
thresholds. While the controlling process, the relay
output changes his state depends of both
“SEt P”
and
“SEt P2”
thresholds in similar way as it was described in
one threshold mode.
If two threshold mode is used,
“modE”
parameter defines state of the relay output when the input value
occurs in a particular zone defined by
border values
of both
thresholds
. The relay can be turned on if the
input value is contained in
zone A
(“modE” = ”in”)
or
zone B
(“modE” = ”out”)
and turned off if it is contained
in the second one (Figure 6.8).
The device menu allow user to set all parameters connected to operation of measurement input, control
modes, critical situations behaviour, communication via RS-485 and access settings. The meaning of the
particular parameters is described in paragraph
MENU DESCRIPTION
.
Some of the parameters can be accessed without menu entering (quick view mode). After pressing
[^]
or
[v]
button, name of the threshold (e.g.
”rEL1”
) and his value will be displayed on the display in alternating mode.
If
[^]
or
[v]
will be pressed in 5 sec again, the next threshold will be displayed, else the device comes back to
the measurement mode. If a free access is enabled (see description of
”SECu”
menu), user can change the
value of particular threshold pressing button
[ENTER]
(see:
PARAMETERS EDITION
).
7. DEVICE PROGRAMMING
7.1. PROGRAMMING MENU
To enter main menu (being in the measurement mode) operator must to press and hold at least 2 sec.
[ESC/MENU] button.
If the user password is defined (see parameter “Scod“, menu ”SECU”), operator have to enter correct one
before proceeding to menu options . Entering of the passwords is similar to the edition of numeric
parameters (see: PARAMETERS EDITION), however presently editing digit is showed only on the display,
other digits are replaced by “-” sign.
After entering of last digit of the password first menu position will be displayed (if the password is correct)
or warning ”Err” in other case.
Pay attention when device parameters are being changed. If it is possible, turn off controlled
installation (machine).
23
www. levelprosales.com
ITC 450/470
User manual
Summary of Contents for ITC 450
Page 14: ...www levelprosales com 12 www levelprosales com ITC 450 470 User manual...
Page 17: ...www levelprosales com 15 www levelprosales com ITC 450 470 User manual...
Page 38: ...36 www levelprosales com ITC 450 470 User manual 7 4 MENU STRUCTURE...
Page 39: ...37 www levelprosales com ITC 450 470 User manual...
