Allen-Bradley 1756sc-CTR8 ControlLogix Counter Input Module
$123.00
$320.00
Description
Allen-Bradley 1756sc-CTR8 ControlLogix Counter Input Module
Configured for pulse counting and frequency measurement in ControlLogix deterministic networks, the Allen-Bradley 1756sc-CTR8 (1756sc-CTR8 Counter Input Module) provides direct physical/electrical execution for single-ended counter signal acquisition. The module processes eight input channels with isolated counting circuitry and backplane communication through the ControlLogix platform.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756sc-CTR8 |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.97 lbs |
| Power Consumption | 4.8 W max. |
| Product Type | Counter Input Module |
| Product Line | ControlLogix |
| Input Type | 8 Single-ended Counter Inputs |
| Counter Speed | 0-65 kHz |
| Input Frequency | 1-65 kHz |
| Isolation Voltage | 2550 VDC |
| Input Impedance | 24 kOhms |
| Backplane Current | 230 mA @ 5 VDC max. |
| Minimum Pulse Time | 5.4 us |
ControlLogix I/O Processing Characteristics
The 1756sc-CTR8 provides eight single-ended counter input channels for high-speed pulse acquisition within ControlLogix chassis architectures. The module receives external pulse signals, processes counting operations, and exchanges data with the controller through the backplane interface.
The module supports I/O density scaling within ControlLogix systems by integrating multiple counter channels into a single chassis slot. The 2550 VDC isolation rating separates field-side input circuits from internal system electronics.
Firmware and EtherNet/IP Control Integration
The 1756sc-CTR8 operates as part of the ControlLogix I/O ecosystem where deterministic communication behavior depends on controller configuration, firmware compatibility, and network architecture. The module communicates through the ControlLogix backplane while higher-level data exchange can be managed through EtherNet/IP deterministic networks.
Firmware flash compatibility between the controller platform and installed I/O modules should be verified during system configuration to maintain proper module recognition and operation.
Frequently Asked Questions (FAQ)
Q: How many counter input channels are available on the 1756sc-CTR8?
A: The module provides eight single-ended counter input channels for pulse counting applications.
Q: What is the maximum counter speed supported by the module?
A: The 1756sc-CTR8 supports a counter speed range up to 65 kHz.
Q: What backplane power requirement is specified for the module?
A: The module requires a maximum backplane current of 230 mA at 5 VDC and has a maximum power dissipation of 4.8 W.
Field Installation Guidelines
Install the 1756sc-CTR8 in a compatible ControlLogix chassis slot according to the system hardware configuration requirements. Verify that the module seating mechanism is fully engaged before applying system power.
Connect field pulse input wiring using appropriate signal routing practices. Separate counter signal cables from high-current switching conductors and motor power wiring to reduce electrical interference.
Use proper shielding and grounding methods for field signal cables where required by the installation environment. Confirm input polarity, signal type, and frequency range before commissioning the counter channels.
Before operation, verify controller firmware compatibility, I/O module configuration parameters, and communication status through the ControlLogix programming environment.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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