Hardware
Hardware Configuration
SKF Multilog On-Line System IMx-M
4 - 23
User Manual
Speed/Tacho - Minimum Pulse Widths
Figure 4 - 12.
Minimum Pulse Width for an Electrical Positive Tacho Signal.
Figure 4 - 13.
Minimum Pulse Width for an Electrical Negative Tacho Signal.
Buffered Outputs
Rear Buffered Outputs
On the rear of each CMM + PRM slot there are 16 buffered analog outputs
marked as "Buf A" and 8 buffered digital outputs marked as "Buf D" as shown
in
The buffered analog signal is divided by 2.
The measuring instrument connected to these buffered outputs must
compensate for this. This can be done by using a sensitivity that is 50% of the
connected sensor. For example, if the sensor is 100 mV/g, then set the
sensitivity on the measuring instrument to 50 mV/g.
The buffered analog outputs are maximum ±11 V and cutoff frequency (-3
dB) is at 60 kHz
The buffered digital outputs are 5 V TTL signal.
Front Panel BNC Buffered Outputs
In addition to the rear buffered outputs, IMx-M offers a feature where a user
can select up to three channels to be directed to front panel, buffered output,
BNC connectors.
These BNC connectors (2 for analog buffered outputs and 1 for digital buffered
output) are located on the front panel of the protection module, as shown in
The channel selection can be done using the
Local display selection keypad
located on the front panel of each condition monitoring module. Refer to
Condition Monitoring Module (CMM)
for the location of the local display
selection keypad.
One channel per buffered output can be selected.
