GE Hydran M2-X Instruction Manual page 119

Hydran* M2-X Instruction Manual
6.5.3.1 Normal Mode
In this mode, the relay state changes if an alarm condition is detected for a
period of time exceeding the corresponding alarm delay; the relay returns to its
former state when the alarm condition disappears for a period of time exceeding the
same alarm delay. The Normal mode is the default setting.
6.5.3.2 Latch Mode
In this mode, the relay state changes if an alarm condition is detected for a
period of time greater than the corresponding alarm delay; the relay returns to its
former state when the alarm condition disappears for a period of time greater than
the same alarm delay and if the alarm has been acknowledged by the user (using the
Hydran M2-X's keypad or using Perception software).
6.5.3.3 Normal and Latch Modes
In the Normal and Latch modes:
•
Alarm relays 1 to 4 are energized when an alarm condition is detected.
•
The system fault relay 5, however, is de-energized when an alarm condition is
detected. The system fault relay is thus energized (NO contacts closed and NC
contacts open) if there is no alarm condition.
6.5.3.4 Force Off Mode
In this mode, the relay does not respond to changes in alarm conditions; the
relay's power always remains off. This mode is used mainly to test the alarm relays
or disable an alarm circuit.
6.5.3.5 Force On Mode
In this mode, the relay does not respond to changes in alarm conditions; the
relay's power always remains on. This mode is used mainly to test the alarm relays
or disable an alarm circuit.
MA-029 Rev. 1.0, 30-Jul-18
Page 119