System 182-XT-4
Relay outputs
6 - 17
ba76027e02
12/2014
6.4.4
Limit indicator
Function
The characteristic of the limit indicator is laid down in the Limit value
UL, Limit value LL, Hysteresis UL and Hysteresis LL settings. The
fundamentals of the function are described in the introductory chapter
(see section 6.3.2).
In order to set up the Limit indicator function for a relay output, the relay
output must be linked with a sensor (see section 6.2.1).
Settings
Setting
Selection/Values
Explanation
Limit values
UL main variable
LL main variable
UL adjoining var.
LL adjoining var.
Main variable
designates the actual
measured parameter
of the sensor (e.g. pH,
oxygen, etc.).
Adjoining variable
designates an
additional measured
parameter (e.g.
temperature).
Limit value UL
Within the measuring
range (sensor-
dependent)
Any upper or lower
limiting value
Limit value LL
Hysteresis UL
0 - 10 % of the
measuring range
Hysteresis for upper or
lower limiting value
Hysteresis LL
Behavior at error
Open
Close
Unchanged
The relay opens,
closes or remains
unchanged in the case
of system errors or
sensor errors (see
page 6-25).
Action
Open
Close
Relay action
Switching delay
0 ... 3600 s
The time period for
which a limiting value
must be exceeded
before the relay
operates.
Prevents frequent
switching for
measured values that
are close to the limiting
value.
Summary of Contents for YSI 182-XT-4
Page 6: ...Contents System 182 XT 4 0 4 ba76027e02 12 2014...
Page 10: ...Overview System 182 XT 4 1 4 ba76027e02 12 2014...
Page 14: ...Safety System 182 XT 4 2 4 ba76027e02 12 2014...
Page 64: ...Installation System 182 XT 4 3 50 ba76027e02 12 2014...
Page 82: ...Operation System 182 XT 4 4 18 ba76027e02 12 2014...
Page 88: ...The SETTINGS menu System 182 XT 4 5 6 ba76027e02 12 2014...
Page 114: ...Relay outputs System 182 XT 4 6 26 ba76027e02 12 2014...
Page 116: ...Maintenance and cleaning System 182 XT 4 7 2 ba76027e02 12 2014...
Page 122: ...What to do if System 182 XT 4 8 6 ba76027e02 12 2014...
Page 134: ...Technical data System 182 XT 4 9 12 ba76027e02 12 2014...
Page 135: ...System 182 XT 4 1 ba76027e02 12 2014...
Page 138: ...Accessories and options System 182 XT 4 11 2 ba76027e02 12 2014...
Page 142: ...Appendix store separately if required System 182 XT 4 13 2 ba76027e02 12 2014...
Page 143: ......