Analogue Output Module
The EKE-Trainnet® Analogue Output Module (AOM) provides a standard interface for analogue output signals..
It receives instructions from the train computer’s Central Processing Unit (CPU) module and sends analogue signals to sub-systems accordingly. The EKE-Trainnet® AOM can be used as a part of an EKE-Trainnet® Train Control and Management System, Vehicle Control Unit or Event Recorder. Alternatively, the EKE-Trainnet® AOM can be fitted into the EKE-Trainnet® Remote I/O System.
Key Features
The module has four individually isolated analogue output groups. All groups are identical and have four analogue output channels. Each group has two PWM outputs.
Each output channel has parameters for calibration (factory set), and diagnostics to detect short or open in the current loop and short in the voltage output. Outputs are factory calibrated.
By default, 2 channels are configured as current loop transmitters with integrated loop supply (current mode), two channels as bipolar voltage output and two digital pulse width modulation outputs (voltage mode). The channel configurations can easily be changed from current mode to voltage mode and vice versa, depending on your needs.
The module has its own 32-bit embedded processor to manage serial communication with the train computer’s CPU module. The embedded processor also implements diagnostic functions and reports to the train computer’s CPU module if it suspects that the output values cannot be trusted.
The EKE-Trainnet® AOM can provide a current loop supply voltage internally: there is no need for an external power supply. Configurable ranges are from 4 to 20 mA for current and from -10 to +10 V for voltage.
The module has an RS 485 serial bus interface for connecting to the train computer.
The module development of AOM3371A is based on the railway standards EN 50126, EN 50128 and EN 50129 in accordance with safety integrity level SIL 2. A non-SIL version of the module, AOM2610A, is also available.
