AB 1746SC-CTR4
AB 1746SC-CTR4
AB 1746SC-CTR4
AB 1746SC-CTR4
AB 1746SC-CTR4
AB 1746SC-CTR4
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1746SC-CTR4

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Spectrum Controls 1746SC-CTR4 is a four-channel SLC 500 counter/flowmeter input module for DC pulse counting, variable-reluctance flow signals and quadrature encoder acquisition.
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Technical specifications for 1746SC-CTR4

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1746SC-CTR4
  • Product Family:
    SLC 500
  • Product Type:
    Four-Channel SLC 500 Counter/Flowmeter Input Module
  • Stock:
    1
  • Counter inputs:
    4 differential channels
  • Quadrature capacity:
    2 channel pairs
  • Counter-enable inputs:
    2
  • Input modes:
    DC counter; AC flowmeter
  • DC input levels:
    5 VDC, 12 VDC or 24 VDC
  • AC flowmeter source:
    Variable-reluctance zero-crossing signal, 50 mV to 75 V peak
  • Input frequency:
    1 Hz to 50 kHz
  • Selectable filters:
    15 kHz, 30 kHz or 50 kHz
  • Count accuracy:
    ±1 count
  • Instantaneous-rate accuracy:
    ±1% at 50 kHz to 0.001% at 1 Hz
  • Channel-to-rack isolation:
    1000 VDC continuous
  • Backplane current:
    175 mA at 5 VDC; 75 mA at 24 VDC
  • I/O image:
    16 input words and 16 output words; Class III
  • Terminal block:
    24-pin removable; 12 to 28 AWG; 0.5 N·m
  • Operating temperature:
    0 to +60°C
  • Storage temperature:
    -40 to +85°C
  • Relative humidity:
    5 to 95%, non-condensing
  • Tariff Code:
    8538900000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Source Matching Counter Modes Program Integration Application
  • Identify 1746SC-CTR4 as Spectrum Controls hardware for an Allen-Bradley SLC 500 local chassis
  • Match every channel to its DC counter or variable-reluctance AC flowmeter source
  • Preserve the Class III slot definition, modes, filters, scaling and counter state before removal

1746SC-CTR4 is a Spectrum Controls four-channel slc 500 counter/flowmeter input module for the Spectrum Controls SLC 500 Specialty I/O platform.

Spectrum Controls 1746SC-CTR4 is a four-channel SLC 500 counter/flowmeter input module for DC pulse counting, variable-reluctance flow signals and quadrature encoder acquisition. 1746SC-CTR4 is manufactured by Spectrum Controls for the Allen-Bradley SLC 500 platform; it is not an Allen-Bradley-manufactured module and it is distinct from the eight-channel 1746SC-CTR8.

Before installation or replacement, verify the complete nameplate, compatible companion hardware, wiring or network design, saved configuration and commissioning plan.

Availability, condition, price, and shipping time for 1746SC-CTR4 are confirmed during quotation.

Spectrum Controls 1746SC-CTR4 Four-Channel SLC 500 Counter/Flowmeter Input Module Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Select the documented 5, 12 or 24 VDC level for DC pulse sources
  • Use AC flowmeter mode only for compatible variable-reluctance sources
  • Confirm differential polarity, pulse width and frequency before connection
  • Use unidirectional mode for single-channel up-counting
  • Use paired inputs for bidirectional counting
  • Select X1 or X4 quadrature according to encoder resolution and noise behavior
  • Configure module ID 10200 with 16 input and 16 output words
  • Use a Class III-capable local SLC processor and chassis
  • Restore scaling, presets, enable logic and diagnostic handling from the approved program
  • High-speed event and production-part counting in SLC 500 machines
  • Variable-reluctance turbine flowmeter pulse acquisition and rate calculation
  • Bidirectional or quadrature encoder position and speed measurement
Description
1746SC-CTR4 is a Spectrum Controls four-channel slc 500 counter/flowmeter input module for the Spectrum Controls SLC 500 Specialty I/O platform.

Spectrum Controls 1746SC-CTR4 is a four-channel SLC 500 counter/flowmeter input module for DC pulse counting, variable-reluctance flow signals and quadrature encoder acquisition. 1746SC-CTR4 is manufactured by Spectrum Controls for the Allen-Bradley SLC 500 platform; it is not an Allen-Bradley-manufactured module and it is distinct from the eight-channel 1746SC-CTR8.

Before installation or replacement, confirm the complete 1746SC-CTR4 identity, compatible hardware, wiring, saved configuration, software release and system requirements.
Alternative Names
1746SC-CTR4 1746sc-CTR4 1746SC CTR4 1746sc CTR4 Spectrum Controls 1746SC-CTR4 Spectrum 1746SC-CTR4 SLC 500 1746SC-CTR4
Technical notes
1746SC-CTR4 is a Spectrum Controls SLC 500 specialty module, not an Allen-Bradley-manufactured catalog. Confirm Class III local-rack support, module ID 10200 and the saved 16-word I/O image before replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which SLC processors can use 1746SC-CTR4?
Use a processor and local chassis that support Class III I/O and a 16-word input/output image. The official manual excludes SLC 5/01 and remote ASB rack applications.
Can 1746SC-CTR4 be replaced by 1746SC-CTR8 without program changes?
No. The CTR8 uses a different module ID and doubles the I/O image. Update the chassis configuration, addresses, data handling and channel logic under the Spectrum replacement procedure.
How should a pulse source be matched to 1746SC-CTR4?
Identify whether the source is a 5, 12 or 24 VDC counter signal or a variable-reluctance AC source, then select the documented mode, threshold and filter without exceeding the input limits.
Why can 1746SC-CTR4 stay at zero even when the sensor is switching?
Check source type, differential polarity, enable input, selected filter, pulse width, frequency, terminal seating, channel enable bit and the module's status words.
How are scaled flow or rate values set up on 1746SC-CTR4?
Use the documented K, M and R scaling factors for the calibrated transducer and engineering units; preserve the raw count path so scaling errors can be separated from wiring faults.
What must be saved before replacing 1746SC-CTR4?
Save the slot configuration, module ID, full 16-word output image, modes, filter choices, presets, scaling factors, alarm flags, wiring map and current counter or totalizer state.
How should 1746SC-CTR4 be commissioned after installation?
Apply a traceable pulse or simulated flow signal to every used channel, prove direction and gate behavior, verify scaling and flags, and compare the input image with the approved program.