States Of Alarm Relays; Operation Modes Of The Alarm Relays - GE Hydran M2-X Instruction Manual

6.5.2 States of Alarm Relays

Relays can only be in two states: On (coil energized) or Off (coil de-energized).
Table 6-10 lists the possible states of all relays.
AC Power
OK
OK
OK
OK
Out
a. On = normal (no alarm); Off = alarm
The state of each relay can be determined as follows:
• By displaying each relay state on the Hydran M2-X's display.
• By verifying the state of the alarm contacts on the corresponding terminal block.

6.5.3 Operation Modes of the Alarm Relays

The mode of each alarm relay is set using the corresponding Relay #x Mode
parameter in Setup > Relay Setup > Relay Test There are four operation modes:
• Normal
• Latch
• Force On
• Force Off
The Hydran M2-X's five alarm relays are independent. A relay can therefore be
set to any operation mode regardless of the mode of the other relays.
Page 118
Alarm
1 or 2
None Off
Alarm 1 or 2 On
Alarm 3 or 4 Off
System fault -
- Off
Table 6-10: Possible States of All Relays
Hydran* M2-X Instruction Manual
Relays
3 or 4 Fault
a
Off On Normal
Off On High or High-High
On On
- Off System fault
Off Off System fault
TDM Signal
-
MA-029 Rev. 1.0, 30-Jul-18