•
Relay Driver Outputs
Important Information
•
Relay driver outputs require power from an external source.
- Output type:
Bipolar FET, ± 30V / 25 mA max. isolated ground
- Output state:
Transistor
OFF
=
no alarm
Transistor
ON
=
alarm detected
2.3 Control module
The control module manages four types of signal:
•
Synchro. 1/rev. probe inputs;
•
Synchro. 1/rev. probe output;
•
Control Inputs;
•
Relay driver outputs.
2.3.1 SYNCHRO 1/rev. inputs
These inputs receive a synchro 1/rev. signal from one synchronization probe installed on a unidirectional unit,
or two synchronization probes installed on a bi-directional unit, such as a pumped-storage generator. The
ROTATION input signal determines which synchro 1/rev. signal input is active on a bi-directional unit. A closed
contact on the ROTATION input sets SYNCHRO 1 IN as the active input, while an open contact on the
ROTATION Input sets SYNCHRO 2 IN as the active input.
In the ZOOM Configuration software, the
Automatic Direction Detection
setting can be configured and the
Rotation Direction
can be associated when the rotation control input contact is closed either in a clockwise or
counterclockwise position. It is also possible to adjust the synchronization pulse threshold for a probe with a
voltage output instead of a transistor output.
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ZPU-5000 Acquisition and Processing Unit with ZOOM Version 7.4 - User’s Manual
