Allen-Bradley 1402-LS51 Line Synchronization Module
$123.00
$320.00
Description
Allen-Bradley 1402-LS51 Line Synchronization Module
The Allen-Bradley 1402-LS51 serves as the primary 1402-LS51 line synchronization module utilized to execute phase, voltage, and frequency matching across dual three-phase power distribution platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1402-LS51 |
| Brand | Allen-Bradley |
| Product Type | Line synchronization module |
| Platform Compatibility | 1771 I/O chassis |
| Module Architecture | Dual-slot solid-state module |
| Input Voltage | 100/120 VAC |
| Internal Supply | 4 VDC |
| Current Measurement Range | 0...5 A RMS continuous |
| Short-Term Current Capability | 200 A RMS for 1 second |
| Frequency Range | 40...100 Hz |
| Frequency Resolution | 0.01 Hz |
| Voltage Match Error Resolution | 0.05 % steps |
| Phase Match Error Resolution | 1 degree |
| Voltage Input Impedance | 728 kOhm |
| Voltage Burden | 0.02 V |
| Backplane Current Draw | 1.1 A at 5 VDC |
| Inrush Current | 2.2 A |
| Update Rate | 100 ms to 1 s depending on sync state |
| Dielectric Withstand Voltage | 2500 V RMS |
| Terminal Type | Screw terminals |
| Weight | 3.37 kg |
| Operating Temp | 0...60 deg C |
| Power Consumption | 1.1 A at 5 VDC backplane draw |
Backplane Synchronization and Deterministic Monitoring
The 1402-LS51 exchanges synchronization status and metering information through the 1771 backplane interface while continuously evaluating phase rotation, voltage differential, frequency deviation, and power flow conditions between two independent three-phase sources.
Internal solid-state processing permits deterministic synchronization calculations with update intervals ranging from 100 ms during bus error detection to 1 s during active synchronization states. The module architecture supports coordinated governor or breaker control through high-speed phase and frequency comparison logic.
The module also performs multi-function electrical metering including watts, VAR, VA, power factor, current, voltage, and energy monitoring without separate external measurement hardware.
Frequently Asked Questions
Q: Can the 1402-LS51 directly perform emergency shutdown functions?
A: No. The module is specified as a solid-state synchronization and monitoring device and is not intended for safety-rated emergency stop or direct protective trip execution.
Q: Does the module require a specific Allen-Bradley chassis type?
A: The supplied documentation specifies installation within a standard 1771 I/O chassis using a dual-slot module configuration.
Q: What installation precautions apply to synchronization voltage sensing circuits?
A: Voltage sensing conductors should be routed separately from high-current switching cables and protected from induced electrical noise generated by contactors, drives, or generator output feeders.
Field Installation Guidelines
Install the module in a grounded 1771 chassis with adequate ventilation clearance around adjacent high-current modules. Verify correct slot allocation before insertion due to the dual-slot mechanical footprint.
Current transformer and voltage sensing wiring should maintain phase consistency between monitored systems. Incorrect phase rotation assignment may produce synchronization mismatch indications or unstable control behavior.
Route low-level sensing conductors separately from generator output feeders and breaker control cables. Shielded instrumentation wiring should terminate to a single cabinet protective earth reference point.
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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