MNX10023 / Rev C
4-11-08
4
Configuring Relays
The input to the internal controller comes from the signal conditioners. They are
built with a specific full scale range and frequency band. The Full scale range of
the transmitters must be known in order for the controllers to display the correct
vibration value. The transmitter will not display any vibration energy present at
frequencies outside the filtering range.
Refer to PRO SC Transmitter User
Manual for specific instructions on calibration and operation.
The monitoring channel provides 2 relay outputs. The system comes from the
factory with a specific vibration range in IPS, mm/s or g’s. To configure the relay
set points, this range must be known. It is recommended that baseline and
typical alarm values of vibration are also known before setup is attempted. The
relays provided by the internal controller are highly configurable.
Refer to PD765
User Manual for detailed programming instructions.
All of the following parameters can be adjusted:
•
Relay Action – Automatic, Latching, Auto + Manual Reset, Latch
with Clear.
•
Relay Operation – Set and Reset points (Hysteresis), On and
Off time Delays
Section III
Operation
Example
Æ
Full Scale 0 – 1.0 IPS , Frequency Band 10 – 1000 Hz.
At 0 IPS, 4 mA flows from the transmitter to the controller
At 0.50 IPS, 12 mA flows from the transmitter to the controller.
At 1.00 IPS, 20 mA flows from the transmitter to the controller.
