6ES7461-1BA01-0AA0 S7-400 Expansion Rack Receiver | Siemens
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Receive Interface Module for Central Rack Expansion
Complete your S7-400 local expansion setup with the 6ES7461-1BA01-0AA0 Receive IM 461-1. This module is installed in the expansion rack (UR) and works with its matching Send IM 460-1. It receives 5V power from the central rack, allowing the expansion rack to operate without its own power supply module for low-power configurations.
Complete Technical Data
Brand: Siemens
System: SIMATIC S7-400
Module Type: Receive Interface Module IM 461-1
Full Model Code: 6ES7461-1BA01-0AA0
Function: For central coupling with 5V power transfer, without C-bus.
Transferred Bus: I/O Bus (P-bus) and 5V Power.
Power from Backplane: 5V DC, max. 120 mA (for its own electronics).
Maximum Power Loss: 600 mW.
Maximum Cable Length: 1.5 meters to the matching Send IM 460-1.
Module Dimensions: Width: 25 mm, Height: 290 mm, Depth: 280 mm.
Approximate Weight: 610 grams.
Installation & Compatibility Guide
This Receive IM 461-1 must be installed in an Expansion Rack (UR). It is the exact partner for the Send IM 460-1 installed in the Central Rack (CR). Connect the two racks using the designated short interface cable (max 1.5m). The expansion rack gets its 5V operating power via this cable, so you can populate it with I/O modules that do not exceed the total power provided by the central rack's power supply.
Warranty & Delivery
All our modules are protected by a 12-month warranty. We ensure fast order processing and shipping through FedEx, UPS, and DHL.
Essential FAQs
Q: Can I use the IM 461-1 with an IM 460-0 Send module?
A: No. Interface modules must be used in matched pairs. The IM 461-1 only works with the IM 460-1. They are designed to transfer power and specific buses together.
Q: What types of modules can I put in the expansion rack with this setup?
A> You can install digital and analog I/O modules. However, you must carefully calculate the total 5V current draw of all modules in the expansion rack to ensure it does not exceed the capacity provided by the central rack's power supply via the interface.
Q: Why doesn't this pair transfer the C-bus?
A> The C-bus is for communication between intelligent modules (like CPs or FMs). The IM 460-1/461-1 pair is intended for simple I/O expansion where such communication is not required, keeping the system simpler and more cost-effective.
Q: What is the maximum number of I/O modules in the expansion rack?
A> The expansion rack can hold up to 8 I/O modules (slots 3-10), but the actual limit is defined by the total backplane current available from the central power supply over the 1.5m cable.
Q: Do I need a termination plug for the expansion rack?
A> Typically, no. The Receive IM 461-1 itself provides the necessary termination for the bus in the expansion rack when installed in the correct slot (usually slot 2).
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