Hach BioTector B3500s, User Manual

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Page 124
OUTPUT 1
DEFAULT STATE N/D DEFAULT STATE defines the idle state of the relay. N/D stands for “ Normally De-
energized ” relay by default and N/E stands for “ Normally Energized ” relay.
STOP Output set to operate when the BioTector is stopped condition. Note that remote stand-
by is not considered as a stop condition.
FAULT Output set to operate on fault condition.
WARNING Output set to operate on warning condition.
NOTE Output activated when a notification is logged in the fault archive.
SAMPLER FILL Fill signal, sent to the sampler, which remains on from start of sampler fill time to the
completion of the sample injection.
SAMPLER EMPTY Empty signal, sent to the sampler, which is a pulse of 5 seconds duration and is
triggered after the Sample Pump reverse operation is complete.
SAMPLER ERROR Output when SAMPLER ERROR input signal is activated due to a sample error in the
BioTector Sampler.
SYNC Synchronization relay, use to synchronize the system with external control units.
REMOTE STANDBY Output when Remote Standby input is activated.
MAN MODE TRIG Indicates that manual reactions are activated and going to be executed regardless of
the activation is carried out manually on the keyboard or remotely from a system input.
MAINT SIGNAL * Output when MAINTENANCE SWITCH input is activated.
TEMP. SWITCH Temperature Switch output activated when the temperature of the system increases
above the predefined system temperature control level (System Fan Control), which is
programmed as 20°C by default.
CAL Calibration Valve used during span calibration/check reactions.
ZERO CAL Calibration Valve used during zero calibration/check reactions.
CAL SIGNAL * Output set to operate on Zero/Span Check and Zero/Span Calibration reactions.
STREAM 1-3 Output set for Stream Valves 1-3.
MANUAL 1-3 Output set for Manual Valves 1-3.
SAMPLE STATUS 1-3 Digital output activated when BioTector Sample Sensor detects no sample
or when the sample quality is less than the default 75% threshold value for a specific
stream (i.e. when there is significant quantity of air bubbles in the stream/manual grab
sample lines).
ALARM 1-3 Alarm relay, activated upon programmed alarm conditions for a specific stream.
CO2 ALARM 1-3 CO2 Alarm relay, activated upon programmed CO2 alarm conditions for a specific
stream.
4-20mA CHNG 4-20mA output change flag relay, which is always activated for a period of 10s, when a
new result causes update of any of the 4-20mA output channels.
4-20mA CHNG 1-3 4-20mA output change flag relay, which is always activated for a period of 10s, when a
new result causes update of a given 4-20mA output channel for a specific stream.
4-20mA READ This signal is used to indicate valid/stable values on 4-20mA output channels in 4-
20mA Stream & Full Multiplex operation modes.
SAMPLE FAULT 1-3 Output when the external stream specific SAMPLE FAULT 1-3 input signal is activated.
COMPRESSOR Output when the compressor (Valve 1-J7 on Oxygen Controller Board) is activated.
EQUALIZATION Output set to operate from the beginning of the Sample Pump forward operation until
the Sample Valve activation.
SAMPLE PUMP REVERSE Digital output activated during Sample Pump reverse operation.
DW FAIL Digital output activated if the Drinking Water % REMOVAL value is a FAIL condition.