Strain Guage Indicator: 409-W
REF NO: m59A/om/501
Issue NO: 03
Page 20 of 34
Table 7.4.
Alarm AL2 (Momentary Alarm): when in abnormal condition ACK not pressed.
Table 7.5.
Alarm AL1 (Maintained Alarm): when in abnormal condition ACK is pressed.
Trip
LAMP
OFF
FLASH
OFF
OFF
FLASH
OFF
RELAY
OFF
ON
OFF
OFF
ON
OFF
Condition
Normal Abnormal UP
DOWN
ACK**
Normal*
ACK***
VHigh
Alarm
Latch(Yes)
LAMP
OFF
FLASH
FLASH
OFF
FLASH
OFF
RELAY
OFF
ON
ON
OFF
OFF
OFF
Alarm
Latch(No)
LAMP
OFF
FLASH
FLASH
OFF
OFF
OFF
RELAY
OFF
ON
ON
OFF
OFF
OFF
Trip
LAMP
OFF
FLASH
OFF
OFF
FLASH
OFF
RELAY
OFF
ON
OFF
OFF
ON
OFF
High
Alarm
Latch(Yes)
LAMP
OFF
FLASH
FLASH
OFF
FLASH
OFF
RELAY
OFF
ON
ON
OFF
OFF
OFF
Alarm
Latch(No)
LAMP
OFF
FLASH
FLASH
OFF
OFF
OFF
RELAY
OFF
ON
ON
OFF
OFF
OFF
Trip
LAMP
OFF
FLASH
OFF
OFF
FLASH
OFF
RELAY
OFF
ON
OFF
OFF
ON
OFF
LOW
Alarm
Latch(Yes)
LAMP
OFF
FLASH
OFF
FLASH
FLASH
OFF
RELAY
OFF
ON
OFF
ON
OFF
OFF
Alarm
Latch(No)
LAMP
OFF
FLASH
OFF
FLASH
OFF
OFF
RELAY
OFF
ON
OFF
ON
OFF
OFF
Trip
LAMP
OFF
FLASH
OFF
OFF
FLASH
OFF
RELAY
OFF
ON
OFF
OFF
ON
OFF
Condition
Normal
Abnormal UP
DOWN
ACK**
Normal*
ACK***
Alarm
Latch(Yes)
LAMP
OFF
FLASH
FLASH
OFF
STEADY
STEADY
OFF
RELAY
OFF
ON
ON
OFF
ON
OFF
OFF