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Section 10
Standby and On-Demand Modes
78
Thermo Scientific Orion
STANDARD: System uses only the standard for flushing the cell in stand-by.
Factory Setup Recommendations When
Operating In "ON-DEMAND" Mode
If the system is to be used "ON-DEMAND", it is highly recommended to keep it powered and to
keep sample flowing to eliminate algae growth in the lines over extended time. It is best to
control the analyzer operation either directly via the keypad (RUN / STOP) keys or using a
remote ON/OFF external control switch for controlling the analyzer.
The following describes how to setup the analyzer.
1 - Select the MANUAL mode: the analyzer will switch to stand-by after one hour of inactivity
(after receiving the STOP command).
MENU ➔ SETUP ➔ + (pg 2) ➔ ANALYSIS PARAMETERS ➔ MODE
Select MANUAL mode.
2 - Program external control input 6:
MENU ➔ SETUP ➔ INPUTS ➔ EXTERNAL INPUTS ➔ INPUT 6
Press the down key to select ACTION: RUN / STOP
Refer to Manual Inputs Signal Connections Section for additional wiring details.
USING INTERNAL 24VDC
INP6
11
RETURN
12
24VDC
15
GND
16
By using the ON/OFF external remote control switch the operator can turn ON analysis (RUN)
when switch is flipped ON (closed contact) and stop analysis (STOP) with switch in the OFF
position. When stopped, the unit will switch automatically to stand-by after one hour. In stand-by
mode, the system will execute the necessary house-keeping to maintain a ready state.
USING EXTERNAL SUPPLY
INP6
11
RETURN
12
15
16
5 - 24VDC
2230 Silica Analyzer
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