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3.1.
Information on displays and use of keys
The general description of the displays and keys for each
model is in paragraphs "1.3.1. Display and keys" on page
13 for the 850, "1.4.1. Display and keys" on page 16 for the
1650, and "1.5.1. Display and keys" on page 19 for the
1850.
3.1.1.
Navigating the menus
4 keys are used for navigating the menus and submenus
and for changing parameters and confirming choices.
Their function depends on the context and on how long
they are pressed.
The LEDs above the keys not only give confirma-
tion that each key has been pressed (by flashing),
but also show which keys can be used in each
situation.
The navigation functions assigned to the keys are:
At first power-on, scrolls the fast configuration
menu; otherwise, the user configuration menu
(Setpoint, Alarm limits, Control output, etc.).
Each time you press the key, the value of the
displayed parameter is confirmed and you go to
the next menu item.
Keep the key pressed for more than 2 seconds to
enter the Programming/Configuration menu.
Each time you press the key, you return to the pre-
vious menu item or to the higher menu level, as
appropriate. Keep the key pressed for more than 2
seconds to return to the Main menu.
Press the key to enter a submenu or to reduce the
value of the displayed parameter, as appropriate.
Keep the key pressed to progressively increase the
speed of reduction of the displayed parameter.
Press the key to raise the value of the displayed
parameter.
Keep the key pressed to progressively increase the
speed of raising the displayed parameter.
When the process variable is displayed, in standard
configuration the key
switches the controller function
mode (manual/automatics).
3.1.2.
Displays
The controllers have 2 or 3 displays, depending on the model.
The Main menu shows:
•
PV display: value of process variable.
•
SV display: value of parameter (default = setpoint, if pa-
rameter dS.SP = SETP).
•
F Display (models 1650 and 1850 only): value of control
output (if parameter dS.F = OUT.P).
3.
COMMISSIONING
80209C_MHW_850-1650-1850_20-2020_ENG_pag. 43
On models 1650 and 1850, the percentage value of the
control output is also shown graphically on a bargraph.
On model 1850, an additional display shows the program
number, step number, and unit of measurement (%, A, kW,
kWh).
According to the situation (programming, alarm, etc.), the
controller displays can show other information, such as the
name of the parameter, description of the parameter, diag-
nostics messages and alarm messages..
Attention! The displays show only the parameters
and menus for a defined configuration.
3.1.2.1.
Display characters
The displays reproduce the various characters by combining
7 or 14 segments. The following tables show the shape of
the various characters.
!
"
#
*
+
,
-
4
5
6
7
>
?
@
A
H
I
J
K
R
S
T
U
\
]
^
_
f
g
h
i
p
q
r
s
z
|
˜
Figure 18 - 14-segment font
$
%
&
'
(
.
/
0
1
2
8
9
:
;
<
B
C
D
E
F
L
M
N
O
P
V
W
X
Y
Z
`
a
b
c
d
j
k
l
m
n
t
u
v
w
x
)
3
=
G
Q
[
e
o
y
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