Siemens 6ES7195-7HG00-0XA0 Isolating Bus Module PROFIBUS

Product Overview

This isolating bus module provides electrical separation between PROFIBUS segments in SIMATIC S7 systems. It features a standard 9-pin D-sub connector on each side for easy network integration. The module measures 40 mm in width, 125 mm in height, and 120 mm in depth. Its durable housing weighs approximately 200 grams for robust DIN rail mounting. You can install this device between two PROFIBUS cable sections without special tools.

The module offers complete galvanic isolation of up to 1,500 V DC between its two ports. This isolation protects connected devices from ground loops and potential equalization currents. The device also operates in both directions with automatic baud rate detection from 9.6 kbps to 12 Mbps. Its internal repeater function regenerates the signal for extended cable lengths. You can use multiple isolating modules in a single network segment.

Technical Specifications

Parameter	Specification
Product Type	Isolating Bus Module
Model	6ES7195-7HG00-0XA0
Interface	2 x 9-pin D-sub (female)
Transmission Rate	9.6 kbps to 12 Mbps (auto-detection)
Galvanic Isolation	Yes (1,500 V DC)
Signal Regeneration	Yes (repeater function)
Max Cable Length	1,000 m (at 187.5 kbps)
Supply Voltage	24 V DC
Current Consumption	Typ. 80 mA
Power Loss	Typ. 1.9 W
Dimensions (W x H x D)	40 mm x 125 mm x 120 mm
Weight	Approx. 200 g
Mounting	DIN rail (EN 60715)
Operating Temperature	0 °C to 60 °C
Protection Class	IP20

Key Features and Benefits

This module eliminates ground loop issues between different power distribution zones. Its built-in repeater extends network distances beyond the standard PROFIBUS limits. You can also use this device to connect PROFIBUS segments with different reference potentials. The module’s LED indicators display power status and data activity on both ports. Its passive fail-safe design maintains network integrity during a power loss.

Installation and Configuration

You mount the module on the DIN rail and connect both PROFIBUS cables. The module requires a 24 V DC supply for the repeater function to operate. Without external power, the module remains passive and only provides isolation. You can configure the module through DIP switches for specific termination settings. The device automatically adapts to the network’s transmission rate after power-on. No software configuration is necessary for basic isolation operations.

Typical Applications

Process plants use this module to separate field instrumentation from control room networks. Automotive facilities rely on it for connecting different building zones safely. The module also serves in power generation environments with varying ground potentials.