Siemens 6ES7531-7LK00-0AB0 AI 24xCVM HF Analog Input Module (SIMATIC S7-1500, ET 200MP) CAN Electric — Industrial Automation Parts Supplier

Twenty-four cell voltage inputs per module

The 6ES7531-7LK00-0AB0 is the AI 24xCVM HF analog input module of the SIMATIC S7-1500 and ET 200MP systems, purpose-built for measuring the voltage of individual battery cells in energy storage systems, battery test benches and UPS / telecom battery racks. Its 24 channels are organized in two potential groups of 12, with 24 channels usable at ±3.5 V and up to 16 channels at ±5 V.

High-voltage isolation for series-connected cells

The inputs are isolated from the backplane bus by basic insulation rated for 1000 V DC; up to 600 V DC may exist between the internal reference and the inputs, with the isolation tested at 4700 V DC between channels and backplane bus — the level required when many cells sit in one series string.

Designed for battery monitoring, not general voltage measurement

Per the official Siemens data sheet, this module is intended for cell voltage measurement; it is not suitable for regular general-purpose ±5 V voltage measurement. The input resistance is 1 MΩ with the inputs connected to +27 V for open-circuit (wire-break) detection, and the permissible destruction limit at each input is 160 V.

Data per the official Siemens Equipment Manual AI 24xCVM HF (6ES7531-7LK00-0AB0) and its Siemens data sheet; confirm the current Siemens data sheet before ordering large quantities.

24 cells monitored from one 25 mm slot

Twenty-four cell-voltage channels in a single narrow module cut the rack width, cabling effort and spare-part count for large battery strings in storage and test systems.

Isolation matched to high-voltage battery arrays

Groups of 12 channels with 600 V DC separation between internal reference and inputs, plus 4700 V DC type-test isolation to the backplane bus, suit stacked battery packs and their reference-potential shifts.

Per-channel limits and diagnostics

Each channel can report two upper and two lower hardware-interrupt limits, wire-break, overflow and underflow straight into the program — ideal for early detection of a weak or disconnected cell.

Calibration and parameters in RUN

The module supports calibration in RUN and reparameterization in RUN, so channel settings and drift correction can be applied without bringing the station down.

Connector and shielding complete in the box

The push-in front connector, shield bracket, shield clamp and power supply element are supplied with the module, so the cabinet wiring reaches the field without a separate connector order.

For non-battery voltage and current signals, the AI 8xHART HF and AI 8xU/I/RTD/TC ST variants above cover process and machine analog inputs — quote with your full signal list for the right mix of modules.

Battery energy storage and test systems

Cell voltage acquisition for lithium-ion battery racks in stationary energy storage, battery formation and cycle-test benches, and backup-power plants running on S7-1500 or ET 200MP stations.

High-density monitoring cabinets

Where many channel points share a narrow cabinet footprint, the 25 mm module and its built-in push-in connector reduce wiring labor; the same HMI hardware in the Related Siemens HMI Products block below displays the resulting status and alarms.

Condition stated in writing

We are an independent channel trader, not Siemens and not a factory-authorized distributor. Every unit supplied is genuine new, and that condition is written on every quote.

Stock you can plan a project around

We trade a broad Siemens SIMATIC S7-1500 and ET 200MP inventory; the Related Siemens list on this page shows live USD list prices with EXW Hong Kong terms, and each quote states the exact quantity available.

Export handled on one thread

Cross-border requests are routine: a single thread covers quote, compliance note and dispatch, so buyers in India, Egypt, the Netherlands, Thailand, Malaysia, the Middle East and South America deal with one team.

The AI 24xCVM HF mounts in any S7-1500 CPU station or ET 200MP interface-module station and is configured in STEP 7 (TIA Portal) V19 with HSP 0452, or through a GSD file. The push-in front connector ships with the module; a spare front connector can be quoted separately if your maintenance plan keeps one on the shelf.

• Email sales@can-electric.com with the order number 6ES7531-7LK00-0AB0, quantity, delivery country, and whether you also need a spare push-in front connector for the module.
• Prices are in USD, shipped from Hong Kong by DHL under EXW terms; units from current stock ship factory-sealed.
• Building a mixed station? Ask for other S7-1500 analog and digital modules on the same request.

Engineers reach this page searching for “6ES7531-7LK00-0AB0”, “Siemens AI 24xCVM HF”, “S7-1500 battery cell voltage measurement module”, “ET 200MP cell voltage monitor 24 channel”, “SIMATIC S7-1500 SM 531 analog input”, “battery management S7-1500 analog input module” or “buy genuine Siemens S7-1500 AI module EXW Hong Kong”. For HART transmitters or universal U/I/RTD/TC signals, the selection table lists the other analog input variants.