YSI 5200A - Manual (Page 76)

YSI 5200A
151
YSI 5200A
150
Notes:
- To configure a negative set point, control, and alarm values enter “-” after,
not before, the numeric digit(s).
- See 30 Second Sensor Hold Off - page 141.
- Only whole numbers can configured for ORP set point, control and
alarm values.
pH
Menus →Sensor Setup→pH
Read Sensor Setup Control and Alarms - page 132 before configuring pH system.
Timed and Normal Control
pH high and low control can operate in two different modes, normal or timed. In the
normal mode, control relays are energized until the set point value is reached. The
normal mode can be used for either low control, high control, or both. For normal
control, configure dose up/dose down to 0. The dwell time will be ignored.
In the timed mode, an energized control relay is energized for the dose time, re-
gardless if the sensor value has returned to the set point value. After the dose time
expires, the control relay de-energizes for the configured dwell time. After the dwell
time expires and if the value is still in control range, the control relay will reenergize.
A dwell time must be configured in the timed mode or the control relay will never
de-energize regardless of sensor value.
Set Point
Control
Mode only
Configuring the 5200A
Directions to Configure pH sensor
1. Connect probe assembly - page 61.
2. Enter pH Sensor Setup menu
Menus →Sensor Setup→pH
3. Use
▲
and
▼
to scroll and highlight submenus.
4. Press

to select.
5. Configure submenus.
6. Press
to save configuration and return to Run Screen.
Notes:
- pH set point, control, and alarm values can be up to five (5) characters,
including the decimal point. Values truncate to 100ths when no 10s
digit is configured.
- See 30 Second Sensor Hold Off - page 141.
- Active dosing timers are reset after systemwide events. Systemwide events
de-energize relays. Example - pH dose up relay is configured for two (2)
minutes. Energized dose up relay de-energizes when 5200A goes into Svr
Hold. The dose up relay had been energized for 15 seconds before the
Svr Hold occurs. Svr Hold time is one (1) minute. After Svr Hold time
expires, the control system is reset. If the sensor is reporting a control
low condition, the dose on time will be for two (2) minutes and not the
remaining 45 seconds of the dose up time prior to Svr Hold.
- pH Control Low Range message remains at the menu when the
pH system is disabled and when a control low relay is energized. Power
cycle the 5200A to clear the control low range message at the Msg’s menu.
Temperature
Menus →Sensor Setup→Temperature
Read Sensor Setup Control and Alarms - page 132 before configuring Temperature
system. Since most heaters and chillers have their own thermostats, their thermo-
stats can be used as a backup temperature control system. Set the heater thermostat
several degrees above the desired temperature and the chiller thermostat several
degrees below the desired temperature.
Range Low and High Control
Temperature high control can operate in two different modes, normal or timed.
Temperature low control operates in normal mode only. In the normal mode, control
relay is energized until the set point value is reached. For normal control configure,
set chiller on time to 0. The chiller off time will be ignored.
Set Point
Control
Mode only
Configuring the 5200A