HIMA HIMax X-MIO 6 01, Руководство пользователя

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3 Product Description X-MIO 7/6 01
Page 16 of 72 HI 801 305 E Rev. 5.00
3.4.3 Reset Input
The module is equipped with a digital reset input (DI 01).
The reset input is used for the following purposes:
 To reset the module after the trip function was triggered.
A rising edge at the reset input resets the trip function. The module functions are activated
and the actuators at the outputs DO 01...DO 05 can be energized.
 To start the turbine after power is switched on
A high level at the reset input activates the module functions; the actuators at the outputs
DO 01...DO 05 can be energized.
A low level at the reset input prevents the actuators at the outputs from being energized;
they remain de-energized until the level changes from LOW to HIGH.
The two funcitons can only be performed if the
Allow Trip Reset
parameter is set to TRUE.
If the module is operating without faults, the reset input does not affect its function.
3.4.4 Digital Outputs
The overspeed trip module is equipped with 5 digital outputs. These outputs are used to control
actuators. The outputs are not galvanically isolated from one another and from the voltage
supply. The supply voltage minus internal voltage drop is present on the outputs.
The outputs are protected against overload. If an overload is detected, the corresponding output
is switched off and switched on again after one second. If the overload is still present, the output
is switched off again for one second. This process is repeated as long as the overload is
present. If the cyclic switch-on after overload must be prevented, the user program must be
configured accordingly.
The maximum total current of the 5 outputs is 12 A and must not be exceeded.
3.4.5 Relay output
The module is equipped with a non-safety-related relay output. This is implemented as a
signaling contact (changeover). The contacts can be used to connect optical and acoustic
detectors with current input up to 180 mA.
During fault-free operation, the relay is energized and trips whenever a warning is output or a
fault occurs, e.g.:
 A rotation speed value from the 2oo3 evaluation diverges from the other two measured
values beyond the tolerance value (warning message).
 Only two error-free measured values are available to perform the 2oo3 evaluation of the
rotation speed (warning message).
 Only two error-free values are available to perform the 2oo3 evaluation of the digital inputs
(warning message).
 Module fault, relay is energized again after troubleshooting.
 Shut down triggered (trip function), rising edge at the reset input is required to restart the
turbine.
The relay output is protected against contact welding caused by short-circuits. Externally, it
must be protected with a fuse of < 1 A. The fuse must be adjusted to the network to be
switched.