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Siemens 7MH4980-2AA01 SIWAREX WP522 ST Two-Channel Weighing Module

Siemens 7MH4980-2AA01 SIWAREX WP522 ST Two-Channel Weighing Module

Product Name: SIWAREX WP522 ST Two-Channel Weighing Module

Brand Name: Siemens

Model Number: 7MH4980-2AA01

Place of Origin: Germany

Warranty: 12 Months

Whatsapp: +86 18020776782

Email: [email protected]

Appurtenance:

siemens 7mh4980 2aa01 siwarex wp522 st two channel weighing module-1

Overview
Scale Integration
Specifications
System Integration
Commercial Term
Contact info
FAQ
Other Products
Recommended Products

Two independent weighing channels for platform and hopper scales in SIMATIC S7-1500 systems

The Siemens SIWAREX WP522 ST combines two analog load-cell channels, onboard digital I/O, RS485 and Ethernet in one S7-1500 technology module. It is designed for non-automatic weighing tasks that need PLC integration, local diagnostics and separate scale processing.

Selection check: Confirm both load-cell circuits, bridge resistance, sensitivity, four- or six-wire connection, calibration data, digital I/O use, TIA Portal version and the required RS485 or Ethernet services before ordering 7MH4980-2AA01.

Scale Integration

7MH4980-2AA01 is a dual-channel SIWAREX WP522 ST module for two platform or hopper scales using analog strain-gauge full bridges. Each channel provides dedicated digital inputs and outputs while the module supplies one RS485 interface and one 10/100 Mbit/s Ethernet port.

A reliable replacement depends on preserving the scale adjustment, load-cell wiring, SIWAREX parameters, limit functions and PLC integration. Record stable zero and reference-load values before removing the installed module.

The two channels can be monitored and controlled independently while sharing the same PLC module.

Channel diagnostics

Use the RUN, ERROR, MAINT, PWR and channel LEDs together with module diagnostics to separate wiring faults from configuration faults.

Limit and output logic

Document every comparison limit and the function assigned to each digital output before transferring parameters.

Stable measurement

Verify mechanical freedom, excitation wiring, shielding and zero stability before changing digital filters or calibration values.

Specifications

Product type designation

TM SIWAREX WP522 ST

Order number

7MH4980-2AA01

Weighing channels

2 independent channels

Load-cell input range

1 to 4 mV/V full bridge

Sampling rate

100 Hz

Signal resolution

±1,000,000 parts per mV/V

Digital inputs

6 total; 3 per channel

Digital outputs

8 total; 4 per channel

Communication

1 × RS485 and 1 × RJ45 Ethernet, 10/100 Mbit/s

Engineering

STEP 7 TIA Portal V14 or later

Supply range

19.2 to 28.8 V DC

Operating temperature

0 to 60 °C horizontal; 0 to 40 °C vertical

System Integration

Preserve both the weighing configuration and the automation-system interfaces during replacement.

TIA Portal project

Archive the S7-1500 hardware configuration, SIWAREX parameters, PLC blocks and diagnostic settings.

Load-cell circuits

Record bridge resistance, mV/V rating, cable length and four- or six-wire connection for each channel.

Service interfaces

Confirm whether RS485 is used for Modbus RTU or a remote display and whether Ethernet is used for SIWATOOL or Modbus TCP/IP.

Commercial Term

Quotation

Current price and availability

Payment

T/T or agreed terms

Lead time

Confirmed with quotation

Shipping

DHL, FedEx, UPS or agreed freight

Warranty

12 months

Contact info

CONTACT

Jim Pei

[email protected]

+86 180 2077 6782

FAQ

How should I confirm that 7MH4980-2AA01 matches both scales in my installation?

Compare the exact order number, two-channel requirement, load-cell sensitivity and resistance, four- or six-wire connections, digital I/O assignments, TIA Portal project and communication use for both scales.

What should I back up before replacing 7MH4980-2AA01?

Save the complete TIA Portal project and SIWAREX parameter set, including zero, span, limits, filters, digital I/O functions and communication settings. Record stable readings and photograph both channel connections.

Why can one channel of 7MH4980-2AA01 remain unstable while the other channel is normal?

Inspect the affected scale for mechanical binding, moisture, damaged load-cell cable, shield or ground faults, unstable excitation and incorrect sense wiring. Compare bridge resistance and raw signal with the healthy channel before recalibration.

What should I check when 7MH4980-2AA01 reports wire-break or short-circuit diagnostics?

Isolate power safely, verify the correct terminal assignment, cable continuity, bridge resistance and excitation voltage, then inspect connectors and junction boxes. Clear the physical fault before changing diagnostic parameters.

How should I recommission 7MH4980-2AA01 after module replacement?

Restore the approved project and SIWAREX data, verify both channels at zero, apply a known reference load to each scale, confirm limits and digital outputs, and document the accepted readings before production release.

Which information should I provide when requesting 7MH4980-2AA01 as a spare?

Provide the full order number, firmware, TIA Portal version, scale type, load-cell quantity and sensitivity, wiring method, communication use, calibration-backup status and clear photos of the module and terminals.

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