ABB R-MAG Series Instructions Manual page 47

38-929M-15A 10/15/02 1:11 PM
PROBLEMS
The opening
command is not
performed.
The CB closes
and then opens
during a close
operation.
The CB opens if the
auxiliary supply is
switched off.
All the indication
output contacts
are open.
Page 47
POSSIBLE CAUSES
The opening coil is broken or damaged.
The capacitor bank is not connected.
No external opening input is connected.
The jumper JP1001 used on input number
4 is not properly set.
The Under Voltage (UV) function is not
enabled.
The control panel is either damaged or not
connected correctly.
The close position sensor is not connected
or broken.
The CB doesn't reach the correct close
position.
The UV function is active and
the auxiliary supply is parallel to this input.
The Energy Failure Autotrip function is
enabled.
The Voltage on the Capacitor bank is under
46 VDC.
If it happens immediately when the supply
voltage is switched off and the Ready LED
is immediately turned off.
ILLUSTRATION 11 – TROUBLESHOOTING GUIDE 2
Page 43
POSSIBLE SOLUTIONS
Check the opening coil circuit.
Check the capacitor bank circuit.
Verify opening input is wired.
If protection relay input is being
used JP1001 must be set for
pins 1 & 2.
Set the correct UV
Threshold.
Verify the control panel
connections or change if
damaged.
Verify the close position sensor
circuit.
Verify the presence of unwanted
objects under the Magnetic
Actuator Plunger.
Either disable the UV
function or connect to a different
voltage source.
If possible, disable the function
via I1004-1.
Connect the auxiliary supply
voltage.
Check the capacitor bank circuit.