User manual for meter with U/I input PD72S
Figure 6.7 presents the principle of relay outputs operation for two thresholds mode, and an
example values of other parameters. In this mode parameter
“SEt2”
is accessible in common
with
“SEtP”
, this parameter describes a second threshold of the relay output. The parameters
“HYSt”
,
“modE”
,
“t on”
,
“toFF”
,
“unit”
and
“AL”
are connected with both
“SEtP”
and
“SEt2”
thresholds. While the controlling process, the relay output changes his state depends of
both
“SEtP”
and
“SEt2”
thresholds in similar way as it was described in one threshold mode.
If two thresholds 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 6.7).
The sequence of thresholds
“SEtP”
and
“SEt2”
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
).
7. DEVICE PROGRAMMING
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
).
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.
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).
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