ABB IRB 2000, Product Manual

Page: 127 / 270

3.6
Voltage supply to electronics
The system is provied with a 24 V supply for internal use, 24 V I/O.
3.6.1
24 V I/O
This voltage is used internally for the robot brakes supply, and MOTOR ON circuits. It's
OV is common to other electronics supplyin the control system.
Techical data
Voltage 24,0 V-26.4 V
Ripple max. 0,5 V p-p
Permitted user load max. 4 A
Current at shortage max. 5 A (average value)
Voltage is available to the user in accordance with the following connection table:
User's connector: User's connector:
XS3 eller XT3 XT18
Signal name Terminal Signal name Terminal
24 V I/O A15,B15 24V I/O 13,14,15,16
24 V I/O A16.B16 24V I/O 29,30,31,32
24 V I/O C16
0VI/O C14,D14 0VI/O 5,6,7,8
0VI/O C15.D15 0VI/O 21,22,23,24
0VI/O D16
3.6.2
External supply
External supply is to be used in the following cases:
• The internal supply provides too little current.
• Galvanic isolation is necessary because of the risk of interference through ground
currents.
• Galvanic isolation is necessary because of the difference in potential between the
control signal and the chassis ground.
• Galvanic isolation is required for reasons of safety.
• Risk of the transmission of considerable interference into the internal 24 V supply.
External supply is recommended to utilize the the galvanic isolation of the I/O-boards.
This could result in disturbances in the normal operations of the control cabinet.
The zero of the external supply must be connected in such a way that the maximum
permissible potential difference between the zero and chassis ground is not exceeded i.e.
by connecting a zero conductor to the chassis ground or some other common grounding
point
Technical data:
Potential difference to chassis ground: max. 60 V continously
max. 500 V for 1 minute
Permissible supply voltage: 19 - 35 V including ripple
INSTALLATION S3
3:13