234-P工業(yè)自動(dòng)化與控制的監(jiān)控器-繼電器輸出規(guī)格書PDF中文資料

Description

The PumpSaver? Plus Model 234-P protects single-phase pumps from dry-well, dead-head, rapid-cycle, jammed impellers,

and over/undervoltage conditions. Typical applications include residential waterwells, commercial waterwells, irrigation

wells, golf courses, and other sprinkler systems. The Model 234-P is designed to be mounted inside a Grundfos* control

box** to protect 1?3–3 hp, 2- or 3-wire, 230 V pumps. An infrared LED communicates directly with a hand-held diagnostic

tool called the Informer (sold separately).

A calibration adjustment allows the 234-P to be calibrated to your specific pumping applications, reducing the possibility

of false or nuisance tripping. A unique microcontroller-based voltage and current-sensing circuit constantly monitors the

incoming power for fluctuations, overcurrent, and undercurrent. When an abnormality such as loss of suction is detected,

the 234-P deactivates its output relay and directly disconnects the pump motor. The 234-P then begins its user-selectable

restart delay (dry-well recovery) timer. When the timer counts to zero or power is removed and reapplied, the 234-P

reactivates its output relay and turns the pump back on. By leaving the restart delay knob in the reset position, the 234-P

will operate in manual reset mode.

The Informer displays parameters including calibration points, trip points, run time and last faults. An IR Kit-12 (12” fiber

optic kit) allows the Informer to access these parameters even when the 234-P is enclosed in a control box. This is valuable

for troubleshooting the pump while it is running.

NOTE: The PumpSaver? models have a sensitivity adjustment for the dry-well trip point. After calibration is done, you can adjust the sensitivity for the dry-well/dead-head trip point

from 70 - 90 of the full load. This makes the unit even more adaptable to varying pumping applications. If you have a very low producing well, increase the sensitivity closer to the

90 mark, or if you have a very heavy producing well, decrease the sensitivity around the 70 mark.

* Grundfos is a trademark of its respective owner.

**The Model 234-P is not recommended for use with the Grundfos Deluxe Control Box.

FEATURES BENEFITS

Proprietary microcontroller-based circuitry Constant monitoring of voltage and current protects pumps from

fault conditions

Onboard sensitivity adjustment Allows user to adjust the current sensitivity for the dry-well/deadhead

trip point from 70 –90 of the full load

Adjustable restart delay Allows user to select well recovery time delay after a dry-well

condition occurs, or to select manual reset

Built-in IR communications link Used with the Informer, allows user to see stored faults, run time,

and also troubleshoot the pump while it’s running

LED indication Provides status and diagnostics for troubleshooting