Fairbanks 2800 Series Intrinsically Safe Instrument - Manual (Page 45)

Section 3: Programming
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3.5.1. I/O MENU DESCRIPTIONS, CONTINUED
PROMPT CHOICE(S)
SPALrt  Used for ALARM purposes.
 In the SoLo
mode only Relay 8 is used, for both the LOW and HIGH
alarm.
 In the paired mode, Relays 4 and 8 are used.
 The setpoint-relay will be active when the GROSS weight is equal to or
below the programmed LOW ALARM weight value or equal to or
above the programmed HIGH ALARM weight value.
─ The following applies to either of the Setpoint Batch modes, whenever the
weight on the scale is below or above the Alert Value, and the Alert is
enabled
. The alert relay(s) toggle On/Off when the following occurs.
 The front panel keys are pressed.
 The instrument comes out of its Sleep mode.
The SPALrt targets are only programmable in the IO Port B Menu.
 The SPALrt may be used with all other setpoint modes except whenever
four (4)
paired setpoints are programmed.
 If SPALrt is enables in conjunction with any other setpoint option, the
instrument prompts for Alarm low wgt, causing an Alarm high wgt.
 Alarm IO
must be set to a value other than zero.