Trouble Shooting; Ps D Without Electronic Overload Protection; Different Status On Led's And Signal Relays - ABB PS D75 840 Series Installation And Maintenance Instruction

6. Trouble shooting

6.1

PS D without electronic overload protection

6.1.1

Different status on LED's and signal relays

LED on
LED off
See LED's
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F1
I
On
T
II F1
On
T
F1
III
On
T
IV F1
On
T
V F1
On
T
VI F1
On
T
F1
VII
On
T
VIII F1
On
T
IX F1
On
T
Signal relay energised
Signal relay not activated
Signal relays
Run TOR Fault
F2
R
P
F2
R
P
F2
R
P
F2
R
P
F2
R
P
F2
R
P
F2
R
P
F2
R
P
F2
R
P
No control voltage on terminal 1 and 2
Control voltage supplied
Ready for start
a) Control voltage supplied and start signal is given.
b) Control voltage supplied and making ramp down
during stop
Normal continuous run.
100% voltage to the motor
By-pass signal relay energised
Normal continuous run.
100% voltage to the motor
By-pass signal relay energised
Power factor optimising (energy saving) activated
(Switch PF in position-Y,(On)
Control voltage supplied and start signal is given.
Fault F1 ( See also fault code tables and flow diagram)
a) Phase loss
b) Switched off by the function
"High current switch off" The switch SC has to be in Y-
position (On)
Reset Via stop signal
Control voltage supplied.
Fault F2 ( See also fault code tables and flow diagram)
a) Over temperature on heat sink
b) Internal fault PCB
Reset Via stop signal
Control voltage supplied.
Fault F1+F2 ( See also fault code tables and flow diagram)
a) Shorted thyristor
b) Semiconductor not conducting
Continuous run with shorted thyristor
(Switch PF must be in N-position, Off)
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