Hach Ultra ORBISPHERE 510, Operator'S Manual

Page: 78 / 144

72 of 138 Inputs/Outputs Menu - Orbisphere 510/511/512 Analyzers
Operator Manual
ORBISPHERE
6.4.1 Instrument Configuration
For some events (sensor out, purge failure, etc.) the actual measurement is not
significant, but the PLC needs to know how the analog outputs behave in these cases.
Two "Event indication modes" are available:
• Standard mode (default)
• Extended mode
Standard Event Indication
Extended Event Indication
The "Extended event indication" mode is only available when the 4-20 mA output is
selected. In this mode, the range between 0 mA and 4 mA is used to indicate selected
events. The events are defined using the channel configuration option (see
“Channel
Configuration” on page 73 ).
Note:
The extended mode is not available for the voltage output versions of the instrument.
Select the analog output range of current:
4-20 mA or 0-20 mA
The 4-20 mA range (recommended) allows for an
extended event indication mode that can be selected
and configured (default = standard mode)
Note:
Features of the instrument with a voltage analog output
are similar to the 0-20 mA features.
Table 6-1:
Standard Event Table
Analog
Output
Event Output Range Event
0-20 mA 4-20 mA 0/5 V
Gas
concentration
20 mA 20 mA 5 V
- Channel out
- Sensor out
- Thermal cut-off
- Interfering gas error
- External pressure sensor out
Temperature 20 mA 20 mA 5 V
- Channel out
- Sensor out
External
pressure
20 mA 20 mA 5 V
- Channel out
- External pressure sensor out