4.3 Controller I/O
It is possible to power the digital I/O from an internal 24V power supply or from an
external power source by configuring the terminal block called “Power”. This block
consists of four terminals. The upper two (PWR and GND) are 24V and ground from
the internal 24V supply. The lower two terminals (24V and 0V) in the block are the 24V
input to supply the I/O. The default configuration is to use the internal power supply,
see below.
If more current is needed, an external power supply can be connected as shown below.
The electrical specifications for both the internal and an external power supply are
shown below.
Terminals Parameter Min Typ Max Unit
Internal 24V power supply
[PWR - GND] Voltage 23 24 25 V
[PWR - GND] Current 0 - 2 A
External 24V input requirements
[24V - 0V] Voltage 20 24 29 V
[24V - 0V] Current 0 - 6 A
The digital I/O are constructed in compliance with IEC 61131-2. The electrical specifi-
cations are shown below.
UR5/CB3 I-22 Version 3.1 (rev. 17782)
Copyright © 2009-2015 by Universal Robots A/S. All rights reserved.
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