ZIEHL-ABEGG UNIcon MODBUS Master CXE/AV, Operating Instructions Manual, Page: 54 / 114

Information
By entering the “ PIN 9095 ” in the “ PIN ” menu of the “ Start ” menu group the device is reset to the as-
delivered state (except for the saved events in the “ Protocol ” menu).
Any changes that have been made to the settings are thus lost.
9.9.4 Sensor Alarm ON / OFF
The inputs “ E1 Analogue In ” and if Sensor 2 is activated “ E2 Analogue In ” are monitored.
In case of an interruption or short-circuit in the sensor conductor, or in case of measured values that
lie outside of the device
’ s measurement range, a time-delayed fault indication takes place.
Function only in controller mode (from 2.01 )!
Controller Setup With “ Alarm Sensors ” = “ ON ” (factory setting). Indicated
sensor disturbances are displayed as “ Alarm ” alternating to
the actual value and stored in the menu of “ Protocol ” .
A programmed alarm relay (factory setting relay K2) indicates
the sensor failure.
Sensor 1
ON
Alarm sensors
Controller Setup With “ AlarmSensors ” = “ OFF ” areindicated sensor disturban-
ces as “ Message ” alternating to the actual value and stored in
the menu of “ Protocol ” .
Sensor 1
OFF
Alarm sensors
9.9.5 Limit
Controller Setup After allocation of a digital input ( IO Setup) an adjustable limitation of the modulation
can be activated via a digital input ( “ D1 ” , “ D2 ” , ..).
Display as long as no allocation has been carried out in “ IO Setup ” :
|
- - - -
|
The limitation in fl uences both outputs in operation with two control circuits.
- - - - -
Limit
“ Limit value ” = max. possible modulation (e.g.
speed reduction during night operation by
time switch).
Setting range:
“ Limit ” = “ Min. Speed ” to “ Max.
Speed ” .
Factory setting: 100 % max. modulation, i.
e. no limit.
Setting depending on device tye in: % or rpm.
D
P
Min.
L= 70% Min.= 0 % Max. = 100 %
50 %
R
0 %
I
S
100 %
I
L
L = 70% Min. = 35 % Max. = 85 %
28.03.2013
v_limit_cxe_master.vsd
80
70
60
50
40
30
20
10
90
A
n
a
lo
g
O
u
t
[V
]
1
2
3
4
5
6
7
8
9
1
0
M
O
D
B
U
S
O
u
t
[%
]
100
Limit (idealized principle diagram)
MODBUS Out: speed setting over MODBUS
Analog Out: speed setting over analog output 0 - 10 V
L Limit
S Setpoint
R Pband
D Speed controller: setting signal
P P-controller: control deviation
Operating Instructions UNIcon MODBUS Master Programming
L-BAL-E207-GB 1723 Index 003 Part.-No.
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