YSI 5200A - Manual (Page 69)

YSI 5200A
137
YSI 5200A
136
alarm icons, hear audible alarm and/or receive alarm notifications sent via email or
cell phone (SMS) - page 95. Configure high and low alarm values to set alarm
thresholds. Alarm system(s) becomes active when value is ≤ low alarm value or ≥
high alarm value. Enabled alarm relays energize if alarm condition exists for the
general alarm hold off time. Alarm relays are energized until one of the four soft-
keys
is pressed regardless of sensor value. Pressing
one of four softkeys resets the alarm system. Alarm systems become active again
if, after the alarm hold off period, the alarm condition still exists. Alarm hold off is
configured in the General Alarm menu.
When the General Alarm is enabled, (with or without enabled relay), the general
alarm system becomes active when any system alarm is active. See General Alarm
- page 117.
System low alarm range starts at -1 significant digit below low control value. High
alarm range starts at +1 significant digit above high control value.
Notes:
- It is important to keep the 5200A at the Run Screen during normal
operation. Alarm functionality (email alarms, activation of enabled
alarm relays, alarm icons, and buzzer) is suspended when 5X00 is not
at Run Screen.
- Alarm icon(s) display at the Run Screen when alarm condition(s) exists
for longer than the general alarm hold off time. See Icons - page 70.
- Press at Run Screen to display active sensor and aux system relays.
- to display events created by control and alarm relays - see Event
Log - page 107.
- Alarm relays are not energized if the 5200A sensor value reads “Over”
or “Under.”
- See Wire Relays - page 46 for information on wiring alarm output
devices.
Validation Error and Autofix - Set Point Control Only
When an invalid value is entered at the numeric keypad a Validation Error window
displays. An invalid value is either a value outside the range of the sensor system or
a value that breaches other settings within the sensor system. Autofix occurs when
a high or low control value is entered that breaches the set point value. Examples
are provided below:
Low range control value must be < set point value. High range control value must
be > set point value. Low alarm value must be < low control value. High alarm
value must be > high control value.
Configuring the 5200A
Example - entering “63” for DO set point results in validation error because the
valid range for the DO sensor system is 0.00 to 60.0 mg/l. User must configure
value within valid range. In addition, the value cannot breach respective control
and alarm system values.
Example - configuring set point value of 8.00 mg/L with range low value of 8.00
mg/l results in validation error. Valid set point range is displayed at validation error
display. Press
to return to numeric keypad to enter valid value.
Autofix occurs when a high or low control value is entered that breaches the set point
value. Autofix changes the high or low control value by one least significant digit
away from the set point value. The set point value is never adjusted.
Example - Entering 8.00 mg/L as the range low value when the set point value is
8.00 mg/L results in an auto fix of the control value. The invalid control value is
displayed at the sensor setup menu. Pressing
is not an option after saving
a value at numeric keypad. Press from the sensor setup menu to continue
with the autofix. A validation error window is displayed to show that the autofix has
occurred. Press
to return to sensor setup menu. Verify that the autofixed
values are configured for user’s specific application and reconfigure as needed. Press
to save configuration and return to Run Screen.
Configuring the 5200A