Telemetery Control Unit

"The TCU combines automated pump control with advanced SCADA communications to provide a powerful, price-competitive solution."

Tech Specs


TCU001: Telemetry Control Unit
TAC Pack TCU: TCU001 with integrated synthesized radio
TCU001-IP: TCU001 with integrated network interface
TCU001-AD: TCU001 with integrated autodialer


5.75" X 8.75" X 5.45"

Supply Voltage

120VAC +/-10%


60 Hz


0.5 A

Power Consumption

20 W (with integrated Radio)

Battery Backup

12 VDC

Analog Inputs

4-20 mA @250 ohm / 1-5 V @100 kohm; both inputs are 12-bit accurate

Digital Input Voltages

10 - 30 volts AC/DC ~ 30 - 300 volts AC/DC with external resistors

Digital Input Impedance

6 kohms

Digital Outputs

120-240 VAC, 60 Hz, 1 A, Pilot Duty


100 mA

RS-232 Interface

9600 BAUD serial interface for radio connection

Default Settings: Optional Settings:
ASCII protocol RTU protocol
9600 BAUD 9600 BAUD
7 data bits 8 data bits
Odd parity E/O/N parity
2 stop bits 1 stop bit

RS-485 Interface

9600 BAUD serial interface for communication to Modbus ASCII devices


24 VDC at 60 mA (100 mA max), unregulated, isolated

Input Protection

M.O.V., Transorb (Transient Voltage Suppressor), and Opto-isolated

Alarm Relays

120 VAC, 60 Hz, 0.5 A, Tungsten

Alarm Light / Horn

Normally closed contacts

LCD w/ Keypad

Liquid Crystal Display; keypad is used to page through programmed menu items

H-O-A Switches

3 x 3-position switches hardwired to 3 solid state control points for HOA operation

Environmental Conditions

Ambient Operating Temperature Range: -10°C (14°F) to 60°C (140°F). The upper temperature limit is 50°C (122°F) when using the recommended backup battery. Note that the LCD display may become unreadable at temperatures below 0°C. Relative Humidity: 0-100%; Atmospheric Pressure: 75-106 KPa; Overvoltage Category II; Pollution Degree 2; EMI Susceptibility to IEC61000-4-5 Surge Immunity Tests; UL listed for Process Control Equipment (UL1092)

Operator Interface: The TCU’s large 4-line x 20-character LCD and 12-button keypad provide an operator interface for configuring the TCU, viewing status, and viewing and resetting alarms. An onboard temperature sensor controls the LCD’s contrast to ensure that the LCD screen is easy to read in both high and low temperature conditions.

Service Port: RS-232 interface for diagnostics, configuration storage, and updating. Configuration files can be transferred between the TCU and a computer.


This product carries a one (1) year return-to-factory warranty against defects in material and workmanship. When installed with factory recommended surge protection, the return-to-factory warranty is extended to three (3) years and is also covered against damag due to lightning and surge. NDS will repair or replace at its option any part or parts of this product during the warranty period. A Return Authorization (RA) must be obtained by contacting the NDS Factory Repair Center at (215) 945-2227 or by email at