YSI 5X00
155
YSI 5X00
154
Below are screen shots of an E-Aux temperature system menu configured in Set
Point control mode.
Control relays configured in the Set Point control mode energize when a user con-
figured control value is received from the input device and is processed by the 5X00.
Control relays can be configured to raise and/or lower DO and non digital aux and
E-Aux systems
.
Configure high and/or low alarm systems to activate peripheral
devices and/or to provide alarm notification messages when alarm condition(s)
exist. Configure values outside of acceptable operating control range as high and
low alarm values.
Set Point Control Values
Range low and Range high values set the acceptable operating range for the water
system. Control system(s) do not become active when value(s) are within accept-
able control range. See figure 4.8 - page 155. Enabled control relays energize when
the sensor reports a value
≤
the range low control value or ≥ range high control
value. Control relays are typically wired to devices used to raise or lower certain
water parameters in order to maintain the system as close to set point as possible.
Control relays remain energized until the sensor reports a value ≤ set point (when
dosing down to lower specific water parameter) and/or ≥ set point (when dosing
up to raise specific water parameter). Exception - timed control is available for high
temperature and high and low analog aux and E-Aux systems - see page 157. In
timed set point control mode control relays are controlled by timers as opposed to
water system value. Sensor low control range starts at -1 significant digit below set
point value. High control range starts at +1 significant digit above set point value.
Configuring the 5X00
Figure 4.8 shows how the 5X00 operates based on a set point control sensor setup
configuration. In the example provided DO range low and range low 2 devices will
energize at
≤
5.0 and
≤
4.0 respectively. The alarm low system becomes active at
≤
3.5.
Range #1
Low
Alarm
ON
High
Alarm
ON
High
Range #1
ON
Optimal
S
etpoint
Value
Lower
Parameter
Values
High
Alarm
Setpoint
Low
Alarm
Setpoint
Higher
Parameter
Values
DO Range #2
High
Range #2
ON
Low
Range #1
ON
Low
Range #2
ON
Acceptable
Operating
Range
Temperature have 1 Control Range
DO has 2 Control Ranges
3.5 mg/l 4.0 5.0 8.1 8.5
8.7 8.9
Figure 4.8
Notes:
-
Configure sensor control relays using AquaManager - see page 150.
-
Changing control mode may result in invalid set point, control and alarm value
configurations. Always reconfirm sensor setup system menu configuration
when control mode is changed.
-
DO systems have two control ranges. They are referred to as Range Low &
Range Low 2 and Range High & Range High 2.
-
Control systems remain active when the user is in 5X00 menus.
-
Control icons display at the Run Screen when relays are energized - see
Icons
- page 76.
-
Press
at Run Screen to display active sensor and aux system relays.
-
Press
at Run Screen to display events created by control and alarm
relays - see
Event Log
- page 120.
-
Control relays are not energized if the 5X00 DO sensor value reads “Over”
or “Under.”
-
“Over” and “Under” are not displayed for aux temperature systems when tem-
perature values are outside the temperature operating range - see
temperature
range specification
- page 15. Temperature system controls will not operate
correctly when values are outside the temperature operating range.
-
See Wire Relays
- page 54 for information on wiring control output devices
on a 5X00 instrument. See IOEM/REM Safety and Installation guide>Chapter
3>Step 4>Wire REM Relay Outputs.
Configuring the 5X00
