breakers. The transmit LED should flash when
there is communication. With the external con-
nections to C11 and C12 or C6 and C7 opened
temporarily, the resistance “looking into” C11
and C12 or C6 and C7 should be approximately
2.5 ohms.
R-Frame, SPB Pow-R and DSII/DSLII Circuit Breakers without Auxiliary Power
Unit Status LED is not
Current thru breaker is < 20% of
No problem. Status LED will not operate with
N.A.
blinking.
frame rating.
breaker currents < 20% of frame rating.
Trip unit may be the problem.
Replace trip unit
Para. 5-3
As soon as current starts
Rating plug is not installed or is
Install rating plug and/or check for loose con-
Para. 2-6 & 5-4.2
to flow thru the breaker,
loose. Breaker cannot be closed
nections.
it trips and the instantan-
without rating plug installed.
eous trip LED comes on.
Rating plug is open internally
Replace rating plug
Para. 5-4.2, Table 2.1
Trip unit may be the problem.
Replace trip unit
Para. 5-3
LED does not come on
Battery installed backwards
Install correctly
Para. 5-4.1
when battery check
button is pressed.
Dead battery
Replace battery
Para. 5-4.1, Table 2.2
Bad rating plug
Replace rating plug
Para. 5-4.2, Table 2.1
“Connection Failure” when
OPTIMizer not working or cord not
Verify OPTIMIzer operation on another breaker.
I.B. 29C892
OPTIMizer is plugged in.
properly plugged into OPTIMizer.
Para. 2-2.2 & 3-2
Cord not properly plugged into
Check connection. If unit status LED is blinking,
Para. 2-5.1
breaker.
connection is OK.
Rating plug is not installed or is
Instantaneous LED will be on. Install rating plug
Para. 2-6 & 5-4.2
loose.
and/or check for loose connections.
Rating plug is open internally.
Replace rating plug
Para. 5-4.2, Table 2.1
Trip unit may be the problem.
Replace trip unit
Para. 5-3
Breaker trips on ground
There actually is a ground fault.
Find location of the fault
N.A.
fault.
On four wire systems the neutral
Check connections at terminals D6 and D7 on
Table A.1
current sensor may not have the
RD and SPB breakers or 19 and 20 on DSII
Wiring Diagrams
correct ratio or be properly con-
breakers. Check that the neutral current sensor
nected.
ratio matches the breaker. Check that the con-
nections from the neutral current sensor to the
(Continues on next page)
breaker are not reversed. Check that the shorting
I.B. 29C891B
Page 51
Effective 11/98
Table 5.1 Troubleshooting Guide (continued from previous page)
Symptom
Probable Cause
Possible Solution(s)
References
Summary of Contents for Digitrip OPTIM 1050
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