Section 2,
Typical Communication Cable Wiring
for Signal Boost (FIGURE 2-1)
Operation
Display:
• Displays sensor type and gas level for each sensors
• Cycles through the sensors
• Sensor number graphic identifies sensor number
(see FIGURE 2-2)
• Latches on an Alarm or Fault condition and requires user
acknowledgment prior to resuming cycling
• If multiple conditions exist, reveals the subsequent alarm/fault
condition when one condition is acknowledged
• Resumes cycling through display screens when all conditions are
acknowledged.
• Alarm and fault conditions are indicated by alarm and the
corresponding number of the alarm level(s) that are activated
Relays:
• Gas processing and alarm activation continues even when a
display is locked on a screen
• Are common to all sensors by default
• Can be assigned specifically to a sensor by enabling only one level
of alarm for each sensor
• This may be accomplished through an Ultima X Controller
(see Section 2, "Calibration") consistent with the existing
Ultima X procedures or through a ModBUS controller
• Form C contacts, 5 A resistive, 30 VDC, 250 VAC
• May be configured as
• Normally energized/de-energized
• Increasing/decreasing level alarm
• Latching/non-latching
2-1
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