11
Instruction Booklet
IB019013EN
Effective March 2019
Zone selective interlocking test kit
For Digitrip 520M, 520MC and 1150 trip units
EATON
www.eaton.com
Error messages explained/troubleshooting
guide
Table 6: Error messages details a list of all of the potential error
messages that will appear on the HMI along with suggested fixes.
In the event of a problem with the device or its operation, Table 7:
Troubleshooting can be used to trouble shoot the ZSI test kit.
Table 6. Error messages
Zone 1 error messages
Selection
Error message
Corrective action
Single/double - main fault
Z1 tripped too slow
Check ZI(B8) connection on Z1. Z1 is receiving restrain signal. Ensure self-restraining jumper is not installed.
Single/double - main fault
Z1 didn’t trip
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Single/double - main fault
Z2 tripped during Z1 test
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Single/double - main fault
Z3 tripped during ZX1 test
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Zone 2 error messages
Double - tie
Z2 trippped too slow
Ensure Z2 does not have restrain jumper installed from ZI(B8) to Z(B9) on Z2 ZSI contacts.
Single - feeder
Z2 trippped too fast
Ensure Z2 has restrain jumper installed from ZI(B8) to ZO(B9) on Z2 ZSI contacts.
Double - tie
Z2 trippped too fast
Z2 may not be receiving restrain signal, check continuity from Z2-ZI(B8) to Z3-ZO(B9).
Single - feeder
Z2 did not trip
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Single/double - feeder/tie
Z1 tripped during Z2 test
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Double - tie
Z3 tripped during Z2 test
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Z3 error messages
Double – feeder fault
Z3 trippped too slow
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Double – feeder fault
Z3 trippped too fast
Ensure Z3 has restrain jumper installed from ZI(B8) to ZO(B9) on Z3 ZSI contacts.
Double – feeder fault
Z3 didn’t trip
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Double – feeder fault
Z2 tripped during Z3 test
Z2 may not be receiving restrain signal, check continuity from Z2-ZI(B8) to Z3-Z0(B9).
Double – feeder fault
Z1 tripped during Z3 test
Z1 may not be receiving restrain signal, check continuity from Z1 ZSI signal ZI(B8) to Z2 ZSI signal ZO(B9).
Double – feeder fault
Z1 and Z3 did not trip
Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers.
Table 7. Troubleshooting
Symptom
Probable cause
Corrective action
Tests repeatedly do not pass
ZSI zone cables are plugged in to wrong breakers or zones.
or
Digitrip settings are not correct
Consult the “Zone Configurations” section, page 5 to correct mistakes
or
Consult the “Setting the Digitrip Time & Multiplier Settings” section to
correct mistakes
ZSI test box does not load startup
screen when powered on
Test program is not loaded properly
Contact the Eaton customer support with this problem.
Test screen button is not present Checkbox is not checked on startup screen
Read the information on the startup screen and select the check box
