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4. CONFIGURATION
80703B_MHW_2850T/3850T_02-2019_ENG
4.11. LOOP Menu
The LOOP menu lets you view 1, 2 (default view) or 4 LOOP
on the same page.
To switch from one display to another, touch the page num-
bers on the right side of the display.
The LOOP to be displayed are selected with the keys
and
or with the + and - buttons.
With the double view, PID are displayed in set pairs (1-2 /
3-4 / 5-6 / 7-8 / 9-10 / 11-12 / 13-14, 15-16), with the qua-
druple view, the PID are displayed in set quartets (1-2-3-4 /
5-6-7-8 / 9-10-11-12 / 13-14-15-16).
The following is displayed for each PID:
•
the
LOOP identification number
. This is the number
that appears in the LOOP list to identify the LOOPS.
•
the
Process Value
(PV), that is, the value the process
variable has at that time.
•
The
Setpoint
(SP), meaning the set value that the
controller must have the machine or system reach and/
or maintain.
•
The PV and SP
units of measure
.
•
Deviation bar graph
: indicates, in percentage, the
difference between PV and SP. If PV is less than SP
the bar is lit in blue to the left (or under) of the median
point, if PV is greater than SP is lit in red to the right (or
above) of the median point.
•
The
output value
(OUT), expressed in %. The value
ranges from -100% (cooling at maximum power) to
100% (heating at maximum power).
•
The controller
operating mode
(Mode), which can be
automatic (Auto), where the output value is calculated
by PID, or manual, where the output value can be set
manually with the MAN POW parameter.
•
For the valve actuator only, the position of the valve
and its opening and closing commands are shown.
If mode = MAN is selected, the opening and closing
commands will be active
4.11.1. Editing parameters
You can edit some of the parameters displayed, without
changing menu.
The type of parameters that can be edited depend on the
selected password level. The table below shows which
parameters can be edited by the user.
Parameter
User level
0
User level
1
Mode
•
Man POW
•
•
SP
•
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