ABB REL650 series, Technical Manual, Page: 764 / 856

17.4.2 Functionality
When the Test mode functionality TESTMODE is activated, all the functions in the IED
are automatically blocked. Activated TESTMODE is indicating by a flashing yellow LED
on the local HMI. It is then possible to unblock every function(s) individually from the
local HMI to perform required tests.
When leaving TESTMODE, all blockings are removed and the IED resumes normal
operation. However, if during TESTMODE operation, power is removed and later
restored, the IED will remain in TESTMODE with the same protection functions blocked
or unblocked as before the power was removed. All testing will be done with actually set
and configured values within the IED. No settings will be changed, thus mistakes are
avoided.
Forcing of binary output signals is only possible when the IED is in test mode.
17.4.3 Function block
TESTMODE
INPUT ACTIVE
OUTPUT
SETTING
NOEVENT
IEC09000219-1.vsd
IEC09000219 V1 EN
Figure 352: TESTMODE function block
17.4.4 Signals
Table 584: TESTMODE Input signals
Name Type Default Description
INPUT BOOLEAN 0 Sets terminal in test mode when active
Table 585: TESTMODE Output signals
Name Type Description
ACTIVE BOOLEAN IED in test mode when active
OUTPUT BOOLEAN Test input is active
SETTING BOOLEAN Test mode setting is (Enabled) or not (Disabled)
NOEVENT BOOLEAN Event disabled during testmode
Section 17
1MRK 506 335-UUS A
Basic IED functions
758
Technical manual