RKI Instruments 65-2615RK-05-04 - Manual (Page 25)

65-2615RK-05-04 M2 Transmitter Operator’s Manual 20
NOTE: You can select normally energized (N. EN) or normally de-energized (N. DE-
EN) alarm 1 and alarm 2 relay settings in Configuration Mode. The following
sections describe the standard factory setting for these relays which is
N. DE-EN.
The fail relay is factory set as N. EN and is not user-adjustable.
Alarm 1 Condition
Alarm 1 Condition Indications
When the gas reading reaches the alarm 1 setpoint, the M2 senses an alarm 1 condition.
The M2 alerts you to an alarm 1 condition as follows:
• The A1 LED turns on.
• The gas reading alternates with the ALARM-1 message.
• The alarm 1 relay energizes.
Responding to an Alarm 1 Condition
1. Follow your established procedure for a low level toxic gas condition.
2. After the gas reading falls below the alarm 1 setpoint, press the ENTER button to reset
the alarm 1 circuit. Resetting the alarm 1 circuit turns off the A1 LED, resets the LCD,
and de-energizes the alarm 1 relay.
NOTE: If the ENTER button is pressed while the M2 is in an alarm 1 condition, the A1
LED will flash but all other indications will remain unchanged.
You cannot de-energize the alarm 1 relay until the gas reading falls below the
alarm 1 setpoint.
Alarm 2 Condition
Alarm 2 Condition Indications
When the gas reading reaches the alarm 2 setpoint, the M2 senses an alarm 2 condition.
The M2 alerts you to an alarm 2 condition as follows:
• The A2 LED turns on.
• The gas reading alternates with the ALARM-2 message.
• The alarm 2 relay energizes.
Low Power DC power source less than 18.5 volts. • F LED is on
• LowPower message and
actual voltage of
incoming DC power
* 1 If the M2 is in both an alarm 1 and an alarm 2 condition, both alarm LEDs are on and the
display alternates between the gas reading and the ALMS 1&2 message.
Table 4: Visual and Audible Alarm Indications
Condition Cause Visual Indication(s)