Lighthouse REMOTE 2 Series, Руководство по эксплуатации

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Technical Data
248083201-1 Rev 6 5-3
OUTPUT
• Counts are output on CH1 and CH2 lines in 4-20 mA current.
• If STATUS feature is available and counts become greater than the
alarm threshold, after a "suppress" of # of consecutive alarm
conditions, STATUS (pin 5) is set to 12mA and the ALARM relay
is turned ON.
• If STATUS feature is not available and counts become greater than
the alarm threshold, after a "suppress" # of consecutive alarm
conditions, the ALARM relay is turned ON.
• If STATUS feature is available and Background Light laser voltage
exceeds the ServiceHigh or ServiceLow limit or when the laser
optics are dirty, STATUS (pin 5) is set to 20mA.
ALARM
If the CH1 or CH2 count exceeds the programmed ALARM threshold,
• The red SERVICE indicator on the instrument blinks.
• The EXTERNAL ALARM relay, described below, is set.
• If STATUS feature is available, STATUS (pin 5) is set to 12mA.
SERVICE ALERT
If the service/background light voltage is greater than the Service High,
or less than Service Low limits, then:
• CH1 and CH2 outputs are set to 2mA.
• The red SERVICE indicator on the instrument is turned on steady.
• If STATUS feature is available and pin 5 = 4 mA ==> No Alarms
and No Service Alerts.
EXTERNAL ALARM
An ALARM condition, as described above, also closes a relay inside
the instrument. Contacts of that relay are connected to the DATA
connector, pins 8 (-) and 9 (+). The user may use an external power
supply and a buzzer or light stick to provide local indication of an
alarm condition. The contacts are rated at 40VDC, 1A maximum.