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SETPOINTS/ALARMS
Setpoints 1 through 4 can be configured for a very large variety of zone and
level signalling.
SP1 and SP2 have balanced configurable hysteresis and are non-latching,
suitable for control-level signalling. SP3 and SP4 are often used as ALarm 1
and ALarm 2, because they have single-sided hysteresis and can be
configured for latching action.
The levels of these setpoints are entered during run mode via the front-panel
pushbuttons (refer to Section 10.11). Many performance options are entered
during the configuration mode (refer to Sections 10.2 through 10.10).
10.1 FEATURES OVERVIEW
1. Four full-range levels with many menu programmable features.
2. Independent operation or ganged action (including guard-band
assignments).
3. Active above or below level, outside or inside band.
4. SP1 and SP2 have configurable hysteresis, 50% on either side of
setpoint.
5. SP3 and SP4 have configurable hysteresis, 100% on inactive side.
6. SP3 and SP4 is configurable for latching action.
7. Setpoint levels can be compared to the unfiltered or filtered input signal
measurements.
8. Configurable delays in alarm action.
9. Individual front-panel LED indicators.
10. Four (4) open-collector transistor outputs with clamping diodes, are
isolated from signal input.
11. Setpoints can be displayed and reset as desired without interrupting
measurements.
Setpoints 1 and 2 have selectable hysteresis, allocated 50% on either side
of the setpoint level. A single setpoint can now generate on/off control
signals for an operating region defined by the hysteresis. Refer to Figures
10-1 and 10-2 to understand how hysteresis works:
Setpoints/Alarms
10
10-1
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