RF & Wireless Systems · Hardware

Wireless Well-Tank Control System

MODM0-ELD100

No cable needed between pump and tank.

ELD101 wireless well unit: DIN-rail housing with top terminals, 433 MHz antenna and pump and tank status LEDs

Overview

The problem in the field. There are often hundreds of meters to kilometers between a well/pump and the water tank. Carrying level information by cable means trenching, cable theft and lightning damage. In manual operation, the tank overflows (wasting water and energy) or runs dry (supply interruption); the pump runs dry and burns out, and phase faults damage the motor.

The solution. The tank unit reads the level from a float switch or an analog level sensor and sends it wirelessly to the well unit. The well unit starts the pump at the low level and stops it at the high level, protecting it through dry-run and phase-protection inputs. If communication is lost, the pump stops after a defined time. Status is visible on site via LCD/LED, and several tanks and wells are managed in the same system. Tanks without mains power use a solar panel kit. The first generation (N1) and the ELD100-based second generation (N2) are in the field; the new KD001 board is coming soon.

Expansion. The roadmap covers level/flow telemetry with an analog level sensor (4–20 mA) and a flow meter (shared with the Wireless Analog & Digital Data Link), SCADA and mobile monitoring through the Wireless Gateway / RTU and Telemetry & Process Intelligence, and a water-network loss and leak package. For general-purpose contact transfer, the same platform is offered as the Wireless Digital I/O Link.

Wireless link at dusk between an open pump panel at the well head and a distant water tank — In use

Well-tank generations: N1 box with LCD, N2 well and tank units, new KD001 controller and float switch — Product family

Features

Dry-run protection: when dry running is detected via an electrode or current input, the pump stops and an alarm is raised.
Phase protection: start inhibit via a phase-sequence / phase-loss relay input.
Float filter: prevents false triggering caused by fluctuating levels (ELD100).
Multiple tanks / wells: several tanks and wells in the same system.
Repeater: range extension with a relay station on long or obstructed paths.
Solar-powered tank unit: for tanks without mains power.
Safe stop on link loss: the pump stops within a defined time.
Local display: LCD (N1) / LED (N2).
Handheld module: manual pump control.
General-purpose derivatives: on/off and pump control derivatives are covered by the Wireless Digital I/O Link.
TargetAutomatic retry: adjustable retry time after a dry-run stop.
TargetPriority and sequencing logic: pump priority and sequenced operation across multiple wells/tanks.
TargetLevel + flow telemetry: analog level (4–20 mA) and flow meter; a telemetry node shared with the Wireless Analog & Digital Data Link.
TargetEnhanced local display: level, link and alarm indication.
TargetSCADA / mobile monitoring: through the Wireless Gateway / RTU and Telemetry & Process Intelligence; Modbus RTU/TCP.
TargetNew-series hardware: the KD001 board, an EM-module-based repeater and a handheld remote based on the Wireless Call Button Platform.

Generations

Generations
Model code	Generation	Highlights	Status	Request a quote
—	N1 (first generation)	LCD display; repeater (relay station)	In the field	Request a quote: N1 (first generation)
MODM0-ELD100	N2 (ELD100)	LoRa; LED display; float filter	In the field	Request a quote: MODM0-ELD100
KD001-P1Target	New board (KD001)	Next-generation well-tank board	Coming soon	Request a quote: KD001-P1

Specifications

Values marked “Target” are design targets, next-generation values or chip-vendor data; they are updated as measurement and certification are completed.

Current system
Generations in the field	N1 and N2 (ELD100)
New board	KD001Target
Pump logic	Start at low level, stop at high level
Level sensing	Float switch or analog level sensor
Protection inputs	Dry run (electrode / current), phase sequence / phase loss
On link loss	The pump stops after a defined time
Local display	LCD (N1) / LED (N2)
Tank unit power	Solar panel kit option

Radio (new series)
Frequency band	433.05–434.79 MHz, 8 channels; 868 MHz as an optionTarget
Output power	+22 dBmTarget
Receiver sensitivity	−129 dBm @ SF11 (chip datasheet)Target
Modulation	LoRa SF9–SF12Target
Antenna	SMA (EC carrier board)Target

Range
Open field	≥ 2000 m (SF11, 2 m height)Target
Obstructed terrain	≥ 500 m; with repeatersTarget

Communication & security
Encryption	AES-128-CCMTarget
Addressing	16-bit network ID + 16-bit addressTarget
Systems on the same site	≥ 8 networksTarget

Performance & fail-safe
Level-to-pump latency	≤ 2 sTarget
Pump stop on link loss	1–30 min, adjustableTarget
Float filter	1–60 s, adjustableTarget
Watchdog	Independent hardware watchdog (IWDG)Target

Power
Supply	9–36 VDC; 230 VAC adapter; 10–20 W solar panel + batteryTarget
Consumption	< 1 W in standbyTarget

Inputs / outputs
Digital inputs	8 × 12–24 V (EC-DIO8)Target
Relay outputs	8 × 5 A / 250 VAC (EC-DIO8)Target
Analog inputs	EC-AIO: 4 × 16-bitTarget
Pulse input (flow)	EC-PLSTarget
Communication	RS485 / Modbus (EC-485); gateway connectionTarget

Mechanical & environmental
Enclosure	DIN housing + IP65 field enclosureTarget
Display (new series)	LED status indicators; LCD optionTarget
Operating temperature	−25…+70 °CTarget
Humidity	Up to 95 %, non-condensingTarget

Warranty & service
Warranty	2 years; manufacturing and service in Ankara

Applications

Municipal and village drinking-water networks
Water utilities
Industrial water supply (cement, sugar, chemicals)
Farm and greenhouse water tanks
Public campuses
Residential booster pump systems
Irrigation tanks

In an existing pump panel, the relay output connects to the contactor coil and the phase-protection and dry-run signals connect to the inputs; the manual/automatic switch is retained. In irrigation tanks, it works together with the Wireless Irrigation Control System: tank level and pump protection are coordinated with the irrigation program.

For applications that carry only a few contacts without level logic (remote start/stop, fault signal), the Wireless Digital I/O Link can be used.

Compliance & documentation

There is no product-level CE declaration of conformity or RED test report yet; documentation is being prepared according to the plan below.

CE – RED 2014/53/EU (EN 300 220-2, EN 301 489-1/-3)
Starting at module level
Target
LVD / EN 61010-1 — pump panel connection
Target
RoHS declaration
Target
CE declaration of conformity, user manual and wiring diagram
Target

References

Some of the organizations using this product family.

İSKİ
Atom Enerji Kurumu (TAEK)
Rize Pazar Belediyesi
Şeker Fabrikaları A.Ş.
Sançim Bilecik Çimento
Gemi Kaya Holding
Adel Elektrik Otomasyon

Frequently asked questions

Will several well-tank systems in the same area interfere?

No. Every system has its own ID; packets with a different ID are ignored. The new series targets at least 8 independent networks through channel × network-ID combinations.

What does the pump do if communication is lost?

If the well unit receives no level data within the defined time, it stops the pump and shows “no link”, preventing overflow and dry running.

There is no power at the tank; will it work?

Yes, the tank unit runs on a solar panel + battery kit.

Can it be connected to an existing pump panel?

Yes. The relay output connects to the contactor coil and the phase-protection and dry-run signals connect to the inputs; the manual/automatic switch is retained.

How can the range be extended?

Antenna height, directional antennas (Industrial RF Antenna Series) and repeaters; on obstructed terrain, the repeater is placed on a high point.

Can several tanks or wells be connected?

Yes; the number of units in a system can be increased. Advanced priority and sequencing logic for multiple wells/tanks is planned in the new series.

Can data reach a SCADA system or a phone?

The current generation offers a local display and a dry-contact output. Modbus/SCADA through the Wireless Gateway / RTU and mobile monitoring through Telemetry & Process Intelligence are planned.

How is it different from the Wireless Digital I/O Link?

The well-tank system is an application product with level, pump-protection and link-loss logic built in. The Wireless Digital I/O Link uses the same platform for general-purpose contact transfer.

What about warranty and service?

2-year warranty; manufacturing and service in Ankara; spare units from stock.

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