ABB RELION REX640 Technical Manual page 1377

1MRS759142 C
REX640
Technical Manual
Table 1319: H-bridge motor operation depending on active outputs
Motor direction Static outputs
H_UP_LEFT
Motor right 1
Motor left 0
Motor brake 1
Motor brake 0
Motor free 0
Be aware of the motor polarity so that a correct connection between
the motor and the H-bridge is established. The H-bridge needs to be
properly connected to the static outputs of the protection relay in
Application Configuration. Wrong connections affect the motor
functionality and may cause personal injury or damage to the
equipment.
Motor logic and parameters
To prevent damage to the motor, the motor is protected by several settable timeouts.
With setting parameter Motor start timeout, the maximum start time for the motor to
recognize a position indication change is defined. If a position indication change is not
recognized during this time, the motor is stopped. If Motor start timeout is set to zero,
the motor start timeout is disabled.
With timeout Operation timeout DC, the maximum time for the disconnector to go
from one state to another is defined.
With timeout Operation timeout ES, the maximum time for the earthing switch to go
from one state to another is defined. If a state change is not fulfilled within this time,
the motor is stopped.
If an unexpected position is detected based on the requested command, in other words
the motor is running in the wrong direction, or if faulty position of the switch is
detected, the motor is immediately stopped. Additionally, an activated block input
that corresponds to the active command stops the running motor immediately.
If any of the cases above occur, the specific event is displayed on the HMI or reported
via communication.
When the motor operates and reaches the final destination, the motor brakes if the
Motor braking setting is selected as "True". The braking time of the motor is selectable
with the Motor brake time parameter. After the motor has braked and stopped, the
motor is in a free state, meaning that the switch is mechanically operable by hand-
crank. A successful operation is also displayed on the HMI or reported via
communication.
H_UP_RIGHT H_LO_LEFT
0 0
1 1
1 0
0 1
0 0
Section 9
Control functions
H_LO_RIGHT
1
0
0
1
0
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