3.11.3
Combined I/O (option)
A combined I/O board can be placed at board position 1, a board with both digital and analog
functions:
• 16 digital inputs
• 16 digital outputs
• 2 voltage outputs for 0 - +10 V
The combined I/O board has 16 digital inputs divided into two groups of 8, and digital 16
outputs divided into two groups of 8. Each group is intended for supply from 24 VDC. The
groups are galvanically isolated and can be supplied from a separate voltage as long as the
potential relative to system ground is not too high, or all groups may be supplied from the
cabinet 24 V I/O supply.
The two analog outputs belong to a common group which is galvanically isolated from the
electronics of the control cabinet The combined I/O is placed at board position 1 (D26.168), but
is connected separately for digital respective analog part
The two analog outputs in the robot system can be supplied with an internal ±15 V voltage
from the control cabinet or with an external ±15 V voltage. When internal ±15 V voltage is
used, there is no galvanic isolation between the analog outputs and the control cabinet
electronics.
Technical data. Digital input/output for each group of 8 channels
Inputs: Optoinsulated
Rated voltage 24 V DC + 45%, -20%
Input current at rated voltage 5.5 mA
Min. 15 V gives "1", closed input
Max. 5 V gives "0", open input
Outputs: Optoinsulated, current sourcing, short-circuit protected
Rated voltage 24 V DC +45%, -20%
Max. load capacity per output 200 ma
Max. load capacity for the complete group of 8 outputs 1A
Voltage drop in amplifier max. 2.5 V
An active signal (output set to 1) means that current is sourced.
Technical data. Analog output
Outputs: 2 voltage outputs
Output voltage 0- +10 V
Load impedance >2 kohm
Resolution 10 mV (10/1024 V)
Inaccuracy 25 mV + 0.40% of output signal
External +15 V supply:
Voltage 14.3 -15.7 V
Max. current requirement at heavy load ±15 V: 15 mA
Max. potential in relation to cabinet earth 500 V for a maximum of 1 minute
50 V continuously
Signal class inputs/outputs
and external supply Measurement signals
INSTALLATION S3
3:33
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