ABB SACE PR010/K, Manual

Page: 20 / 20

Rev.
L0633
Apparatus
SACE PR010/K
Sh. No.
Mod. Apparecchio N° Pag.
ÿþþ
ABB SACE
Doc. No.
N° Doc
RH0043.002
Sh. No
N° Pag..
20
/
20
N° Situation Possible cause Suggestions
1
Relays do not switch, even in
presence
of conditions
required for switching (for
example
an overload with
protection function L)
1. Relay in Stand-by or Self-test mode.
2. The unit has not been reset.
1.Set the Stand-by and Self-test dip-switches
to OFF, press the reset push-button on the
front panel of the PR010/K unit.
2. Carry out reset.
2
The unit does not update
events after a trip.
1. The unit has not been reset
2. Internal Bus communication is
interrupted.
1. Press the reset push-button on the front
panel of the PR010/K unit.
2. Check connections.
3
The signalling cannot be reset
after a trip, despite pressing
the reset push-button. The connected protection unit is a
PR112/PD or PR113/PD and has not
been reset.
1. Press the RESET push-button on the front
panel of the PR112/PD or PR113/PD.
2. Send the “Trip reset” command from the
remote supervision system.
4
Flashing “Tx (Int Bus)” and/or
switching relay K51/5 (bus
KO) discontinued.
1. Bus conflict (2 master)
2. Defective connection 1. Set Slave mode (dip-sw 6=Off)
2. Check connections
5
The LED “Tx (Int Bus)”
flashes with a frequency of
2Hz.
1. Communication not present.
2. Unit PR010/K in Stand-by mode.
3. Unit PR010/K in Self-test mode.
4. Connected protection unit not
recognised.
5. Incorrect communication speed set
(dip-switch “Baud”).
1. Check connections.
2. FN
3. FN
4.Remove Vaux from PR010/K unit and from
the protection unit, then re-power the two
units simultaneously.
5. Set the correct value.
6 The LED “Tx (Int Bus)” is off.
1. Wiring error.
2. Anomalous situation.
3. Aux voltage not present. 1. Check connections.
2. Contact ABB SACE.
3. Restore supply voltage.
7
The LED “Tx (Int Bus)” is on
continuously.
Anomalous situation. Contact ABB SACE
8
The LED L (or S, I, or G)
flashes.
The circulating current is close to the
threshold value (L, S, I or G) set on the
protection unit.
FN
6.1. In case of fault
If it is suspected that the PR010/K unit is faulty, is malfunctioning or has generated unpredicted commands, the used is
advised to carefully follow the following instructions:
Prepare a brief description of the problem (when did it occur? How many times? Can the event be reproduced? ...)
Note the type of load connected to the signalling unit (lamps, signalling relays, CBs, contacts, sirens etc..) and the
serial number of the unit (see par.5.3.3).
Send / communicate all the information, along with applicable electrical diagrams, to the nearest ABB SACE Service
centre.
Providing complete and accurate information to ABB SACE Service will allow the problem to be analysed efficiently,
thus permitting the client to receive complete and prompt service.