AI 8 Pt/Ni/Tc
Kendrion Kuhnke Automation GmbH
164
State
LED flash code
Explanation
Ok
Green, on
No error
Error
Off
Malfunction of module if E-bus LED = On
Inoperative if E-bus LED = Off
Red, 4x
EtherCAT watchdog control
Red, 7x
Configuration error (E-bus pre-operational), no. of
process data differs from that in the module
Defective
Red, on
Module defective
LEDs "Channel"
The "Channel" LEDs indicate the state of every channel.
State
LED flash code
Explanation
On
Green, on
Channel enabled
Off
Off
Channel disabled
Error
Red, 1x
Sensor low
Red, 2x
Sensor high
Note on Pt100/NI100 mode
Error "input high" is not shown in the Pt100 and Ni100 modes, unless a temperature sensor is
connected. Check that your wiring is correct (jumpered 2-wire or 3-wire connection) to ensure
that all error are detected/shown properly.
Note on thermocouple mode
Errors
input low
and
input high
are just indicative of the temperature being out of the set
range.
A short circuit (input low) is not detected in thermocouple mode (types J,K) because the
thermal voltage is too small for a short circuit to be relevant to the measured result.
Since a broken wire is not detected, the floating module values may provoke an
indication of error
input high
or
input low
.
Function
The AI8-I module has eight analogue temperature sensor inputs. Every channel can be separately set to one
of the following sensor types: millivolt, Pt100, Pt1000, Ni100, Ni1000 (DIN 43760) or thermocouple.
Measured value
Readings are shown in 0.1 °C steps (default). Alternatively, you can choose to show them as Ohm/Volt or
raw data.
To Set up the Options
Conversion of the analogue values can be synchronised with DC (Distributed Clocks) or SM (Sync
Manager).
