Hach Ultra ORBISPHERE 510, Operator'S Manual

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68 of 138 Inputs/Outputs Menu - Orbisphere 510/511/512 Analyzers
Operator Manual
ORBISPHERE
6.1 Configure Snooze
6.2 View Inputs/Outputs
6.3 Relays
There are three measurement alarm relays per channel and one system alarm relay for
the instrument. These relays are configurable as either standard or custom events
through the instrument menu.
• An alarm relay can be activated or deactivated
• When the alarm is OFF, it is activated,
• When the alarm is ON, it is deactivated
All the relays are activated as soon as the instrument is ON (but alarms are OFF). When
the instrument is OFF, the relays are deactivated, thus in this state, all alarms are ON.
The logic "Relay deactivated = Alarm ON" has been chosen for this safety reason.
When the main board does not communicate with a measurement board for more than
30 seconds, the measurement board switches all the alarm relays and analog outputs to
the alarm state.
In the event of an alarm, the “snooze” button stops the
instrument buzzer and returns all the relays in the
instrument to their normal state during a "snooze time".
Enter the snooze time in seconds and press OK.
For each channel, this test view allows for checking the
actual state of the 3 alarm relays, and the 3 analog
outputs current (or voltage, depending on the instrument
version) values.