YSI 5200A - Manual (Page 67)

YSI 5200A
133
YSI 5200A
132
Notes:
- For normal operation, the 5200A must be at the Run Screen. Alarm
functionality (alarm emails, activation of assigned alarm relays,
alarm icons, and buzzer) is suspended when 5200A is not at the Run
Screen.
- Sensor system must be enabled in order to display values at Run Screen.
Control and/or alarm relays will not energize regardless of value if the
sensor system is disabled.
- There is a 30 second delay at power up before control, timer, and alarm
systems become active.
- There is a 30 second sensor system hold off when sensor configuration is
changed. See 30 Second Sensor System Hold Off - page 131.
- Calibrate sensor prior to use. See Calibration - page 74.
- “Over” and “Under” readings at sensor display indicate a measurement
value outside the operating range of the 5200A.
- Control and Alarm functions, including relays, are suspended when a
sensor reading is “Over” or “Under.”
- “Over” and “Under” readings most likely indicate that the sensor needs
to be serviced or replaced, or a bad probe/cable connection exists.
- See Menu Maps - page 201 for system defaults and ranges.
- One relay can be assigned to multiple systems. It is essential that the
relay configuration be verified in order to avoid conflict of operation of
wired relay devices. Assigning one relay to multiple systems can result
in invalid operation.
Control Mode and Alarms
Menus → Sensor Setup→Aux 1 →Control Mode
→Aux 2 →Control Mode
→Conductivity →Control Mode
→DO →Control Mode
→ORP →Control Mode
→pH →Control Mode
→Temperature →Control Mode
Configuring the 5200A
Configure Aux analog, Conductivity, DO, ORP and pH systems to control and
alarm at user configured values to best manage your aquatic system. Sensors and
aux analog devices report values to the 5200A. Wire and configure peripheral de-
vices (outputs) to turn on and off in order to maintain certain water conditions as
close to the setpoint as possible. 5200A instruments have two control modes. They
are Set Point control and PID/PWM control. In both control modes a set point is
configured. Configure the set point to the ideal system value.
When a system is operating in Set point control mode control relays energize when
a user configured control value is reported to the 5200A from the input sensor or
device. The control relay remains energized until the the system set point value is
processed by the 5200A.* In contrast, when a system is operating in PID/PWM
control mode there are no user configured control values. Control relays energize
anytime a value is reported that is away from the set point. (See PID/PWM up/down
control configuration - page 139). The control output relay on time is proportional
to certain conditions and values being reported to the 5200A.
Set point and PID/PWM control are discussed in more detail in following sections.
See Setpoint control beginning on page 134 and PID/PWM control beginning on
page 138.
*exception - high temperature, high and low pH and high and low conductivity may
also be configured for a timed set point mode - see “Timed and Normal control
mode” information included in specific sensor setup sections that follow.
Notes:
- Aux digital systems do not have set point or PID/PWM control modes.
See page 142 for complete aux digital configuration information.
- Sensor Setup menu selections change based on the configured control
mode
- Changing control method between PID/PWM and Set Point may result
in invalid set point, control and alarm value configurations. Always
reconfirm control menus configuration when control mode is changed.
Configuring the 5200A