D6254S G.M. International S.p.A.
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D6254S

  1. Products
  2. Isolators
  3. Analog Input
D6254S
SIL2 2/4-Wire Transmitter Trip Amplifier

The 2/4-Wire Transmitter Trip Amplifier D6254 provides a fully floating dc supply to energize conventional 2 wires 4-20 mA transmitters located in Hazardous Area; it also accepts 0/4-20 mA current input signals, as well as ±12 V voltage inputs. The module repeats/converts the input as on current signal, in a floating circuit, suitable for applications requiring SIL 2 in safety related systems for high risk industries. The output signal can be in direct or reverse form. Two independent Alarm Trip Amplifiers are also provided.

FEATURES

  • SIL 2 / SC 3
  • ±12 V Voltage Input
  • 0/4-20 mA Active-Passive Input, Source-Sink Output
  • Input and Output short circuit proof
  • Modbus RTU RS-485 for monitor & configuration
  • Out-of-range fault detection
  • Optional alarm acknowledgement input
  • Fully programmable operating parameters
  • High Accuracy, μP controlled A/D converter
  • Three port isolation, Input/Output/Supply

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Technical Data


Supply
Type 24 Vdc nom (21.5 to 30 Vdc), reverse polarity protected.
Current Consumption 110 mA @ 24 Vdc with 20 mA input/output and alarm relays energized, typical.
Power Dissipation 2.3 W @ 24 Vdc with 20 mA input/output and alarm relays energized, typical.

Input
Type 0/4 to 20 mA (separately powered input, voltage drop ≤ 0.5 V) or 4 to 20 mA (2 wires Tx current limited ≈ 25 mA), or voltage input ±12 V.
Integration time 100 ms.
Input range 0 / +25 mA for current, ± 12 V for voltage.
Transmitter line voltage 15.5 V typical, 15.0 V minimum, @ 20 mA.

Acknowledgement input
Type Logic level reverse polarity protected.
Voltage range 0 V ≤ OFF ≤ 5 V, 18 V ≤ ON ≤ 30 V.
Current Consumption 10 mA @ 24 Vdc, typical.

Output
Type Fully customizable 0/4 to 20 mA, on max. 300 Ω load source mode, current limited @ 25 mA.
Transfer characteristic linear, direct or reverse, square root.
Response time ≤ 100 ms (10 to 90% step change).

Alarm
Trip point range within rated limits of input sensor.
Output two voltage free SPDT relay contacts.
Contact rating 4 A 250 Vac 1000 VA, 4 A 250 Vdc 120 W (resistive load).
DC and AC load breaking capacity refer to Instruction Manual.

Modbus interface
Type Modbus RTU RS-485 up to 115.2 kbps for monitor/configuration/control.

Isolation
Test Voltage In/Other 1.5 kV; Alarms/Other 1.5 kV; Alarm/Alarm 1.5 kV; Out/Supply 500 V; Out/Ack 500 V; Ack/Supply 500 V.

Environmental conditions

Operating temperature temperature limits –40 to +70 °C.
Storage temperature temperature limits -45 to +80 °C.

Mounting
Type DIN-Rail 35 mm, with or without Power Bus or on custom Term. Board.
Weight about 120 g.
Connection by polarized plug-in disconnect screw terminal blocks to accommodate terminations up to 2.5 mm² (13 AWG).
Dimensions Width 22.5 mm, Depth 123 mm, Height 120 mm.

Data Sheet


Datasheet of D6254 ( EN | FR | ES | IT | JA | RU | CN | DE | PT )

Instruction Manual


Instruction Manual D6254 ( EN )
Safety Manual D6254 ( EN )

Certifications


Type Description Area Number Issued by Issue Date
EMC D5000/D6000 EAC EMC Declaration of Conformity ( RU ) Eurasian Community ЕАЭС N RU Д-IT.PA08.B.82326/24 CONTROL 2024-09-26
Metrological Metrological Certificate Belarus for D5000/D6000 Series ( BE ) Belarus 15507 ROSSTANDART 2022-08-30
Metrological Metrological Certificate Kazakhstan for D5000/D6000 series ( KK | RU ) Kazakhstan 1152 KMC 2021-08-05
Metrological Metrological Certificate Russia for D5000/D6000 series ( RU ) Russia n. 78820-20 ROSSTANDART 2025-03-28
SIL TUV IT 25 SIL 0636 SIL Certificate Summary ( EN ) International TUV IT 25 SIL 0636 TUV_SUD 2025-09-19

Declarations of Conformity


EU Declaration of Conformity for D6000 series ( EN | IT )
Declaration of Conformity G3 compliance ( EN )

Dimensions


Image of D6254_size

Connections


Software


SWC5090 - Configurator for D5000/D5200, D6000/D6200 Series isolators ( EN )
Instruction Manual SWC5090 ( EN )
Registration Certificate of SWC5090 ( IT )