PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-HSCE2 is an SLC 500 high-speed input module designed for counting and positioning applications. This single-slot module provides dedicated signal processing for high-speed pulse and quadrature signals. It accommodates differential inputs labeled as ±A1, ±B1, ±Z1, ±A2, ±B2, and ±Z2. The input channels accept frequencies up to 1 MHz with a minimum pulse width of 475 nanoseconds. Input voltage operating ranges support 4.2 to 12 VDC and 10 to 30 VDC.
The module features eight total outputs, including four physical sourcing outputs and four virtual outputs. Physical outputs handle operating voltages from 10 to 30 VDC with 1.0 Ampere per channel maximum. Backplane current consumption draws 250 milliamps at 5 VDC and 0 milliamps at 24 VDC. The unit installs in any standard SLC 500 chassis slot or 1747-ASB remote I/O chassis. Terminal connections use the 1746-RT25G wiring connector.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Backplane Current (5 Volts) | 250 milliamps |
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| Category | PLCs |
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| I/O Connection | 1746-RT25G |
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| Input Frequency | 1 Megahertz |
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| Input Voltage | 30 Volts DC |
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| Input Voltage, nominal | 5VDC; 24VDC |
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| Inputs | 4 Single-Ended and 2 Differential Quadrature |
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| Max. Input Frequency | 1 MHz |
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| Min. Phase Separation | 200 ns |
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| Min. Pulse Width | 475 ns |
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| Module Type | High-Speed input module |
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| Module inputs | ±A1, ±B1, ±Z1, ±A2, ±B2, and ±Z2 |
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| Module outputs | Eight (8) outputs; Four (4) Virtual / Four (8) real |
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| Operating Voltage Range | 4.2V dc to 12V dc; 10V dc to 30V dc |
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| Output voltage range | 10-30 VDC |
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| Outputs | 4 |
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| Slots | 1 |
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| Step Response | 100 milliseconds in, 2.5 milliseconds out |
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| UPC | 611320083750 |
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| Update Time | 1.5 milliseconds |
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| Weight | 0.63 lbs (0.28 kg) |
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TECHNICAL INFORMATION
Features
- Supports two quadrature counters or up to four single-ended pulse counters.
- Accepts maximum input frequency of 1 MHz with 475 ns minimum pulse width.
- Provides 24-bit counting capacity spanning minus 8,388,607 to plus 8,388,607.
- Includes four physical sourcing outputs rated at 1.0 A per channel.
- Features 1000 Volts backplane isolation and 500 Volts channel-to-output isolation.
- Provides thermal cut-out overload protection across output channels.
TECHNICAL INFORMATION
Applications
- High-speed pulse totalizing and frequency measurement.
- Bi-directional quadrature position monitoring with encoder feedback.
- Industrial motion tracking within SLC 500 controller systems.
TECHNICAL INFORMATION
Connections / Interfaces
- Field wiring connects to the 1746-RT25G removable terminal block.
- Input terminals provide connection points for ±A1, ±B1, ±Z1, ±A2, ±B2, and ±Z2 signals.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into any available slot of an SLC 500 chassis.
- Route input signal wiring away from potential high-frequency electrical noise sources.
- Ensure total module output load does not exceed 2.0 A at 40°C or 1.5 A at 60°C.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure channels for either single-ended pulse counting or differential quadrature inputs.
- Select linear counter mode or ring counter mode based on the application requirement.
TECHNICAL INFORMATION
Compatibility
- Compatible with all Allen-Bradley SLC 500 CPU modules.
- Installs in SLC 500 local chassis or remote chassis via the 1747-ASB adapter.
- Requires the 1746-RT25G terminal block for physical field wiring.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with all Allen-Bradley SLC 500 CPU modules. Installs in SLC 500 local chassis or remote chassis via the 1747-ASB adapter. Requires the 1746-RT25G terminal block for physical field wiring.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What maximum input frequency does the 1746-HSCE2 support?
The module supports input frequencies up to 1 MHz with a 475 nanosecond minimum pulse width.
How many counters can be configured on the 1746-HSCE2?
The module supports up to four pulse counters or two differential quadrature counters.
Which chassis systems are compatible with the 1746-HSCE2?
The module functions in any SLC 500 chassis or remote chassis using a 1747-ASB adapter.
What removable terminal block is used with the 1746-HSCE2?
Field wiring connects to the module using the Allen-Bradley 1746-RT25G connector.
