![background image](http://html.mh-extra.com/html/abb/relion-615-series/relion-615-series_technical-manual_2395120.webp)
10
12
11
13
15
14
X130
SO1
SO2
16
18
17
SO3
GUID-C5B5FD1C-617B-4F38-A0D4-D98735E69530 V1 EN
Figure 29:
Signal output in BIO0006
3.13
RTD/mA inputs
3.13.1
Functionality
The RTD and mA analog input module is used for monitoring and metering current (mA),
temperature (°C) and resistance (Ω). Each input can be linearly scaled for various
applications, for example, transformer’s tap changer position indication. Each input has
independent limit value supervision and deadband supervision functions, including
warning and alarm signals.
3.13.2
Operation principle
All the inputs of the module are independent RTD and mA channels with individual
protection, reference and optical isolation for each input, making them galvanically
isolated from each other and from the rest of the module. However, the RTD inputs share
a common ground.
3.13.2.1
Selection of input signal type
The function module inputs accept current or resistance type signals. The inputs are
configured for a particular type of input type by the channel-specific
Input mode
setting.
Section 3
1MAC059074-MB A
Basic functions
114
615 series ANSI
Technical Manual
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