Manual
ibaPADU-8AI-U/-8AI-I
14
Issue 1.6
Status of digital inputs (both devices)
LED per channel Status Description
DI 0…7
Off
No signal, logical 0
Green
Signal ok, logical 1
7.3
Connections
7.3.1
Fiber optic connections X10 and X11
X11 (RX): FO input
X10 (TX): FO output
The X10 output has all data of the device itself and the data from all previous devices.
Chaining is done when X10 of a device is connected to X11 of the next device. The last
output must then be connected to a fiber optic input of the ibaFOB card. Connecting and
disconnecting of devices on the fiber optic links is allowed at all times. Interrupting the
fiber optic link leads to missing data for the time period of the interruption.
Maximum distance of fiber optic connections
The maximum distance of fiber optic connections between 2 devices depends on various
influencing factors. This includes, for example, the specification of the fiber (e.g.
62.5/125
μm, 50/125 μm
, etc.), or the attenuation of other components in the fiber optic
cable plant such as couplers or patch panels.
However, the maximum distance can be estimated on the basis of the output power of
the transmitting interface (TX) or the sensitivity of the receiving interface (RX). A model
calculation can be found in chapter 10.3.
The specification of the transmitter's output power and the receiver's sensitivity of the
fiber optic components installed in the device can be found in chapter "Technical data"
10.1 under "ibaNet interface".
7.3.2
Power supply X14
The device requires an external DC 24 V ±10% power supply (unregulated). The oper-
ating voltage should be run through the provided 2-pin Phoenix threaded coupling con-
nector. If desired, you can order DIN rails or plug-in power supply units from iba.
7.3.3
Analog / digital inputs
Connection diagram
It is possible to connect 8 analog input signals and 8 digital input signals, each bipolar
and electrical isolated. Each channel is connected by means of two-wire connection. Due
to the reverse polarity protection, the measuring signal is indicated logically correct, even
if the connection is polarity-reversed.
