Curtis Instruments MultiMode 1230 - Curtis Model 840 Spyglass Display; Curtis Model 1312 Tiller Multiplexer

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Curtis 1230 Manual, Rev. C
1 — OVERVIEW
Additional features on 1230-2X01 models (for use with multiplexer)
✓ 4-wire serial interface for all tiller functions
✓ Two auxiliary outputs, controlled by switches on the tiller multiplexer,
can be used for a lift relay, lowering valve, horn, etc.
✓ Internal main contactor for battery reverse polarity protection and ad-
ditional safety
✓ Variable PWM voltage for precise control during lift/lower operation,
in applications with a proportional valve
Curtis Model 840 Spyglass Display
✓ 3-wire serial interface
✓ Sequences between hourmeter, BDI, and error displays
✓ Alphanumeric, 8 character, 5 mm LCD display for hourmeter, BDI,
and fault messages
✓ Operating temperature range -10°C to 70°C; models with lower
temperature ratings available for freezer applications
Curtis Model 1312 Tiller Multiplexer
✓ 4-wire serial interface increases reliability
✓ Multiplexes up to 12 signals, analog or digital
✓ All signals sampled 50 times per second
✓ Signal integrity checked 150 times per second.
Familiarity with your Curtis controller will help you install and operate it prop
-
erly. We encourage you to read this manual carefully. If you have questions,
please contact the Curtis office nearest you.