ABB OmniCore C30 Product Manual page 553

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Product manual - OmniCore C30
3HAC060860-001 Revision: P
Test
Measure the DC voltage while the
output is connected to the robot
signal exchange proxy or some
other load.
Power the controller OFF and
measure the resistance.
Check for short circuit on DC out-
put.
Check both the DC output connect-
or X2 on the power supply and the
input connector X1 on the robot
signal exchange proxy.
Switch on power to the controller.
Measure the input voltage on the
power supply.
Make sure that the connection
between the power supply and the
power unit is ok.
Make sure that the supplied input
voltage to the controller is correct.
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6 Troubleshooting
6.3.10 Troubleshooting the power supply
Note
Use a multimeter and insulating gloves.
Measure at the DC output connector X2. The
voltage should be: +24 V < U < +27 V.
• If the voltage measured at the load falls
below +24 V, voltage drops in the cables
and connectors.
• If the correct voltage is detected and the
DC OK LED is green, the power supply
is working properly.
• If the correct voltage is detected and the
DC OK LED is off, the power supply is
regarded as faulty but does not have to
be replaced instantly.
• If the DC OK voltage is higher than 27
V, proceed with step 10.
• If the DC OK voltage is below 24 V, pro-
ceed with step 3.
Use a multimeter and insulating gloves.
Measure the resistance between voltage pins
and ground. The resistance should not be less
than 10 ohm.
Note
Do not measure the resistance between pins.
Dual pins are used for both power supply and
ground.
• If no short circuit is found, proceed with
step 6.
• If a short circuit is found on the power
supply, proceed with step 10.
• If a short circuit is found on the robot
signal exchange proxy, get that unit
working. Verify that the fault has been
fixed and restart this guide if necessary.
Use a multimeter and insulating gloves.
Voltage should be: 172 V < U < 276 V for a 230
V system.
• If the input voltage is correct, proceed
with step 10.
• If no or the wrong input voltage is detec-
ted, proceed with step 7.
• If the connection is OK, proceed with
step 8.
• If the connection is faulty, repair the
connection. Verify that the fault has been
fixed and restart this guide if necessary.
• If the input voltage is correct, proceed
with step 9.
• If the input voltage is faulty, correct it.
Verify that the fault has been fixed and
restart this guide if necessary.
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