Section 8 REX060 injection unit LHMI
8.1 REX060 injection unit HMI (REG670 only)
8.1.1 Injection unit REX060
GUID-76627CA5-9351-49BB-ABDE-81A939D12BF4 v2
The injection unit REX060 is used to inject voltage and current signals to the generator or
motor stator and rotor circuits. REX060 generates two square wave signals with different
frequencies for injection into the stator and rotor circuits respectively. The response from the
injected voltage and currents are then measured by the REX060 unit and amplified to a level
suitable for the analog voltage inputs of IED.
For local operation, the REX060 unit is provided with a control panel on the front.
Local operation shall only be performed according to the operation regulations
set up by the relevant operation authority of the plant.
8.1.2 REX060 start up sequence
GUID-63A15CD3-17B0-41DD-9611-8272DDA53137 v1
When the injection unit REX060 is energized, the ABB logotype is shown followed by current
REX060 revision status. When the start up sequence is completed, the main menu (normal
display content) is shown. The duration of the start up sequence is a few seconds.
1MRK 500 127-UEN D Section 8
REX060 injection unit LHMI
670 series 71
Operation manual
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