Analogue Input Module (AIM)

Analogue Input Module (AIM)

EKE Trainnet® AIM Front EKE Trainnet® AIM Side


EN 50126
EN 50128
EN 50129
EN 50155
EN 45545

Dimensions (W x H x D):
4 TE x 3 U x 160 mm
160 g
Input Power:
5 V DC ± 5 % (650 mA typ. 3 A max.)
Temperature Range (operational):
-40 °C…+70 °C
MTBF (40 ºC ambient temperature):
500 000 h (AIM2505A)
I/O Connector:
DIN41612-F48 (at front)
Host Interface:
RS 485 serial
Input Channels, Analogue:
10 voltage channels, -10…10 V (Vin)
10 current channels, -20…20 mA (Iin)
Input Channels, Frequency:
4 input channels
Frequency Input Voltage Range:
0…36 V DC
Frequency Input Threshold level:
Each channel has its own software configurable threshold level, fixed hysteresis
Frequency Input Range:
DC to 16 kHz, 0.25 Hz resolution
Frequency Input Pulse Width Measurement:
0.1% resolution
Tachometer Supply Outputs (Vout):
15 VDC, max. 100 mA

module functions

The Trainnet® Analogue Input Module (AIM) provides a standard interface for analogue input signals. Signals can be current (-20…+20mA) and voltage (-10…10V). Separate channels are provided for frequency signal measurements with the capability to measure pulse-width ratio (PWM). The Trainnet® AIM converts the analogue signals and makes them available to the train computer's CPU Module.
The Trainnet® Analogue Input Module can be used as a part of a Trainnet® TCMS, VCU or Event Recorder. Alternatively, the Trainnet® AIM can be fitted into the Trainnet® Remote I/O Module (RIOM).

key features

The Trainnet® AIM has 10 current channels and 10 voltage channels divided in three isolated groups. 4 frequency channels are also available.

The 10 current measurement channels can measure currents between -20 and +20 mA. The module has the capability to supply voltage to external sensors or to supply loop voltage to the current loops. The module's 10 voltage measurement channels can measure voltages between -10 and +10 V. The resolution of the input A/D conversion is sign+12 bits, and the cut-off frequency of the hardware low pass filter is 10 Hz. Both current and voltage channels are capable of giving over range indications which can be used for diagnostic purposes.

The 4 frequency input channels can measure frequencies up to 16 kHz, period, pulse width, pulse count and rotary decoding with direction indication (compatible with most industry standard tachometers).

The module has its own 32-bit embedded processor that uses factory calibration values to convert the measurement value to mV or µA with great accuracy. The embedded processor also implements diagnostics functions and reports to the system CPU module if it suspects that the input values cannot be trusted.

sil-2 certified

The module development is based on the railway standards EN 50126, EN 50128 and EN 50129 that are in accordance with safety integrity level SIL 2. A non-SIL certified version of the module is also available.

Published on: 2017-03-02

EKE-Electronics Ltd
Piispanmäentie 5
02240 Espoo
Tel +358 9 6130 30