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Product short description:
  • 4 to 20mA DC input
  • 4 to 20mA DC output
  • Loop-powered
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These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Power is derived from the input signal current. Each channel operates independently and is isolated from the others to prevent interaction between channels.

For easy troubleshooting, each unit has LEDs and diagnostic test points. Fault LEDs identify output open loop conditions and load compliance problems. The precision 10 ohm sense resistor enables monitoring of the output signal without disturbing field wiring.

Approvals
CE marked. UL, cUL listed.
Class I; Division 2; Groups A, B, C, D

  • Multiple channels on a single unit saves space and reduces costs.
  • Galvanic isolation eliminates ground loops, reduces noise, and blocks transient signals.
  • Independent channels prevent signal interaction and offer spares for later use.
  • Fault LEDs provide a clear visual warning of open or failed process loops.
  • Single calibration pot per channel enables one-step, precise calibration
  • Operating Temperature range 25 to 70°C (-13 to 158°F)
APP NOTE: Retransmitting a signal output from a controller or a D/A card using Acromag's Model 671T or 672T.

Specs & Catalogs

Manuals

671T, 672T, 674T User Manual (Log in to download the file)

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Additional information

Weight 8 oz
Dimensions 12 × 13 × 3 in
Part Number

TBK-B01: two 6-position barrier strip style, TBK-B02: four 6-position barrier strip style, TBK-B03: one 3-position and three 6-position barrier strip style, TBK-S01: two 6-position spring clamp style, TBK-S02: four 6-position spring clamp style, TBK-S03: one 3-position and three 6-position spring clamp style

  • Description

    These optional terminal blocks provide safe and secure wiring connections. Large captive screw terminals or spring clamps enable fast, easy connections. Pluggable terminals are removable for simple disconnection of the module without disturbing the wiring.

    Optional terminal blocks are compatible with Acromag’s “white box” modules including BusWorks 900 Series, IntelliPack 800 Series, and isolated transmitters 600 Series.

    Barrier Strip Terminal Blocks

    Wire Range: 12-26 AWG
    Safety Ratings: UL, CSA, CE, TUV.
    Current/Voltage Rating: 15A, 300V.
    Pin Spacing: 5.08mm (0.2”).
    Housing Material: PPO, UL 94 V-0, Black.
    Contacts: Tin-Lead Plated Phosphor Bronze.
    Screw: M3, Nickel Plated Steel.
    Insulation Resistance: ≥105 Megohms.
    Dielectric Withstand: <3000V.

    Spring Clamp Terminal Blocks

    Wire Range: 12-28 AWG.
    Safety Ratings: UL, CSA, CE, TUV.
    Current/Voltage Rating: 15A, 300V.
    Pin Spacing: 5.08mm (0.2”)
    Housing Material: PPO, UL 94 V-0, Black.
    Contacts: Tin-Lead Plated Phosphor Bronze.
    Spring Clamp: Stainless Steel.
    Insulation Resistance: ≥105 Megohms.
    Dielectric Withstand: <3000V.

    Acromag Standard Cage Clamp Terminal Blocks

    Wire Range: 12-24 AWG.
    Current/Voltage Rating: 12A, 300V (UL).
    Pin Spacing: 5.08mm (0.2”).
    Housing Material: UL 94 V-0.
    Terminal: Brass, nickel plated.
    Wire Protector with Contact: Copper alloy tin plating.
    Screw: M3, steel, nickel over copper plating.
    Contact Resistance: ≤10 milliohms per circuit.

  • Features & Benefits

    • Multiple channels on a single unit saves space and reduces costs.
    • Galvanic isolation eliminates ground loops, reduces noise, and blocks transient signals.
    • Independent channels prevent signal interaction and offer spares for later use.
    • Fault LEDs provide a clear visual warning of open or failed process loops.
    • Single calibration pot per channel enables one-step, precise calibration
    • Operating Temperature range 25 to 70°C (-13 to 158°F)
  • Tech Papers

    APP NOTE: Retransmitting a signal output from a controller or a D/A card using Acromag's Model 671T or 672T.
  • Specs & Data Sheets

    Specs & Catalogs

    Manuals

    671T, 672T, 674T User Manual (Log in to download the file)

  • Accessories

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      DIN Rail: Type T

      • DIN Rail Strip, Type T
      $10$20
      Read more
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      PS5R: Slim Line Power Supplies

      • 10W, 15W, 30W, 60W, 90W, 120W, and 240W models
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      Select options
    • Compare

      Terminal Block Replacements

      • Simplifies wiring connections on Acromag I/O Modules
      • Barrier strip or spring clamp terminal block kits
      • Provide safe and secure wiring connections
      $25$35
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 12 × 13 × 3 in
    Part Number

    TBK-B01: two 6-position barrier strip style, TBK-B02: four 6-position barrier strip style, TBK-B03: one 3-position and three 6-position barrier strip style, TBK-S01: two 6-position spring clamp style, TBK-S02: four 6-position spring clamp style, TBK-S03: one 3-position and three 6-position spring clamp style