4120 RTU

Remote Terminal Unit



Features Specifications DataSheet


Features

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  • Remote I/O
  • Data Logging
  • Alarm Dialing
  • Ideal for small well sites, tank sites & lift stations
  • 2 12-bit Analog Inputs; 5Vdc or 20mA
  • 6 Isolated Digital inputs; 12/24/120 volts AC & DC
  • 2 Relay Digital outputs
  • Battery-backed Realtime Clock & Calendar
  • Easy Windows configuration "Toolbox" software
  • Pulse & analog flow rate totalization with scaling
  • Built-in "Store-and-Forward" messaging
  • DC power; Solar & Battery Compatible
  • Live datalog download & configuration upload over data link
  • RS-232, RS-422, RS-485, Telephone & Radio Communications
  • Compact package, DIN rail mounting for lower panel costs

The 4120 is a new generation of "smart" Remote Terminal Unit (RTU) that combines the functions of a distributed Remote I/O Module, a Datalogger and an Alarm Dialer at a significantly lower cost than integrating separate devices. Windows based "Toolbox" software makes configuration of the RTU fast and simple, either locally, or over the communications link.

The Digital Inputs support AC or DC signals and are individually configurable for input voltage and filtering. The RTU monitors the ON transitions and runtime for each Digital Input. The Analog Inputs are individually configurable for voltage or current operation. The first four Digital Inputs and the Analog Inputs can totalize (for flow or wattage) scaled to engineering units.

The Data logging feature records all digital states, analog levels and pulse rates, with time and date stamping at a user defined rate. With the internal telephone modem option installed, any Digital Input, High/Low Analog level or totalizer rate can initiate Alarm Dialing from one of four telephone number lists. Alarms are acknowledged by touchtone telephone or local input.

Specifications

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Digital Inputs 6 (2 groups, 4 and 2 inputs), 1,000-volt optical isolation
Digital Input Voltages 3 to 35Vac/Vdc, 85 to 160 Vac/Vdc, user configurable
Digital Input Pulse Rate/Runtime Up to 100Hz (first 4 inputs), up to 65,535 minutes each
Digital Outputs 2, Form A Relay Contacts, 1,000-volt isolation
Digital Output Rating 0 to 120Vac/Vdc, 3A maximum
Analog Inputs 2, 12-bit, 5Vdc or 20mA DC, user configurable
Communications RS-232, RS-422, RS-485 or Telephone/Radio Modem (option)
Communications Protocol/Rate Modbus RTU, up to 9600 baud
Data logging 804 records, 1 record every 1 to 255 minutes (4.25 hours)
Internal Telephone Modem PC/"Hayes" compatible, up to 9600 baud (option)
Internal Radio Modem RMX-2400 compatible, up to 2400 baud over standard voice radio
Power 10 to 30Vdc, <1.0 Watt (standard), <1.5 Watts (internal modem)
Temperature 0°C to 70°C Operating, -40°C to 100°C Storage
Humidity 10 to 95%, non-condensing
Dimensions 73 x 75 x 114 mm
2.87 x 2.95 x 4.48 inches


Ordering Information

Model #
Description
41-4120 4120 RTU with Remote I/O, Data Logging and Alarm Dialing (option)
41-DM14400 Telephone Modem Option (required for Alarm Dialing functions)
41-RM2400 Radio Modem Option (converts Audio radio with push-to-talk to data radio)
41-TBX PC-based Windows "Toolbox" software for RTU configuration



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