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Indicator - Panel meter

STR 550

Indicator - Panel meter 96x48mm (1/8 DIN) with integrated Trend and BarGraph functions.
Front panel IP54, 4keys silicon membrane keyboard. Monochromatic LCD display 128x64 (RGB backlighting, color selectable by parameter, programmable color changing at threshold reaching); Intuitive programming/operation interface with text menus in 5 languages. Installation both on horizontal (96x48) or vertical (48x96) panel cutouts, visualization of process variables, trend and BarGraph may be may be programmed accordingly by parameter. This device is equipped with universal analogue input (RTD/TC/standard linear inputs) for the acquisition of process signals also with fast transient (conversion frequency up to 242Hz/4,2 ms).
As the largest part of instrumentation, STR550 integrates in a single ordering code all the most requested hardware solutions: 2 relays programmable for different alarm modes, 2 analogue outputs (0...10Volt and 0/4...20mA) for fast and accurate retransmission of process/setpoint values, 1 Modbus RTU Slave serial port for interface with PLC/HMI/PC, 2 configurable digital inputs, useful built-in power supply 24Vdc/30mA for loop-powered external sensors. Software features includes storing of max. peak/min. peak/peak-to-peak values, "Totalizer" function typical for flow control and "Sum" function for weighing systems. For configuration and parameters setting, in addition to standard tools (Memory Card and Labsoftview software), a wireless Rfid (NFC) channel is provided and can be used with the new RF-Programmer device for fast and straight-forward programming.
Extended power supply range 24...230 Vac/Vdc. Short depth (only 48mm) for optimal installation within control cabinets.

Ordering codes

STR550-12ABC-T: 1 Analogue input + 2 Relays 2A + 1 Out 0...10V + 1 Out 0/4...20mA + RS485 Modbus RTU /Slave

Main features

Box: 96x48 (Front panel) x 48 mm / or 1/8Din
Power supply: 24...230Vac/dc ±10% 50/60 Hz (galvanically isolated)
Consumption: 6 W
Operating conditions: Temperature 0-45 °C, humidity 35..95 uR%
Material: Box: Polycarbonate V0
Weight: Approx. 165 g
Sealing: IP54 (Front panel) with gasket - IP20 (Box and Terminal blocks)
Quick set-up options: Software LABSOFTVIEW and/or Memorycard
Wiring: extractable terminal blocks and spring locking


1 Analogue (16 bit): Selectable for TC type K, S, R, J, T, E, N, B (automatic compensation of the cold junction 0…50 °C), thermoresistances PT100, PT500, PT1000, Ni100, PTC1K, NTC10K (β 3435K), process signals 0-10 V(54000 points), 0/4-20mA(40000 points), 0-60 mV (16000 points), Potentiometer 6 KΩ, 150 KΩ (50000 points) Customizable linear input (max 16 steps)
2 Digital : PNP inputs programmable for Run / Hold / Tare-Zero / Alarms rearmament / Peaks reset/ Totalizer reset / Activate-Reset Sum / Parameters-Setpoints Lock


2 Relays: Contacts 2A - 250Volt AC (resistive charge)
2 analogue outputs: 1 output 0...10Volt (60000 points) - 1 output 0/4...20mA (60000 points)
1 Auxiliary output: 24 Vdc / 30mA for external sensors supply (loop-powered)
Serial communication: RS485 Modbus RTU - Slave (1200...115200 Baud) galvanically isolated from Power supply/Inputs/Outputs

Software features

Alarms regulation: ON - OFF with hysteresis
Alarm mode: Absolute / Threshold, Band with instantaneous/delayed/retentive/by digital input activation, Sensor failure / Activation by serial line
Sum Function: By digital input or by keyboard it is possible to sum different process measurements over time
Totalizer Function: Visualisation of instant process value and total value since last reset
Trend visualization: Trend visualisation with selectable time basis 1 to 3600s
Analogue retransmission: Process values / Setpoints
Digital transmission via RS485: Process values / Setpoint / Parameters
Latch-on function: Semi-automatic setting of limits/ calibration values for analogue input
Text menus: English/Italian/Deutsch/French/Spanish
Data logging function: Selectable time basis 1s to 3600s, tot. memory 2,5K Word
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