9.11.3
Limit indication depending on (offset) to Setpoint
In operating modes as a controller (starting from
2.01
), two limit indicators can be carried out based
on the set target value (Setpoint) and measured actual value (on E1).
Only for active Setpoint of control circuit 1!
Display for operation with two control circuits: 1.Offset function, 1.Offset 1, 1.Offset 2, 1.Offset hyst.,
1.Offset Delay
Limits
Following functions can be allocated to the limit indication.
Identical setting for both analogue inputs
“
E1
”
and
“
E2
”
.
OFF
Offset Function
OFF
no function (factory setting)
Fault
(1L)
Limit alarm alternating with actual value display Is listed in the proto-
col as an alarm.
Indication with the centralized fault of a programmed relay (IO alloca-
tion Function
|
2K
|
).
Message
(2L)
Is listed in the protocol as a message. There is no alternating mes-
sage on the actual value display and no message via alarm relay.
Filter error
(3L)
Like function
|
1L
|
with fault message
“
Filter
”
Filter Message
(4L)
Like function
|
2L
|
with fault message
“
Filter
”
In the IO setup, a separate relay can be allocated independent of these settings.
Limits
Offset 1, Offset 2
Both values for Offset 1 and Offset 2 can be set independent of each other and act on
a relay together if correspondingly programmed. If a function is activated or if a relay is
allocated both settings (Offset 1 and Offset 2) are initially at
“
OFF
”
.
Work can be carried out with one as well as with both limit indicators.
“
Offset 1
”
for alarm in case of an exceeding of the max. deviation between actual and
target.
Switch ON point: actual value = Se/- offset
Swtich OFF point: Actual value by hysteresis under the switch-on point
“
Offset 2
”
for alarm in case of an undercutting of the max. deviation between actual and
target
Switch ON point: actual value = Se/- offset
Swtich OFF point: Actual value by hysteresis over the switch-on point
- - - - -
Offset 1
Limits
- - - - -
Offset 2
Limits
Offset Hysteresis
Hysteresis switch-on point: In temperature regu / - 10 K, otherwise sensors
10 % of measurement range
- - - - -
Offset Hyst.
Limits
Offset Delay
Time delay until indication through relay and alarm symbol.
Setting range: 0 - 120 sec.
Factory setting: 2 sec.
- - - - -
Offset Delay
Example for temperature regulation; for other modes of operation settings in corresponding sensor
unit.
Operating Instructions
UNIcon MODBUS Master
Programming
L-BAL-E255-GB 1901 Index 001
Part.-No.
88/121