User's Manual

Motor Condition Monitoring System Manual: Wireless Hardware
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iii. rMICA-master
rMICA-master sensor base station is also installed in a place with good visibility
to rMICA-vibration. Installing the base station at a high place stabilizes the radio
wave condition. Connect the antenna to the antenna connector and tighten it
until the ring does not turn. If you want to install the antenna away from the box
case (such as at a high place or on the top of the panel), please contact us for
custom made of an antenna extension cable. Connect to the host computer with
the dedicated 2m USB cable. rMICA-master does not require an external power
supply.
3 Startup
After connecting the rMICA-vibration and rMICA-ACC connector to start the
measurement and data transmission. MICA-R, HARTING standard industrial PC with
specified application installed creates sequential measurement data files. Various
measurement conditions can be changed on the web GUI application. Please refer to
the Web GUI manual for details.
4 Wireless module and antenna
i. Wireless module
A DIGI Xbee SX900 RF module is built-in in both rMICA-vibration and rMICA-
sensor. It uses ISM band of 902-928MHz. With frequency hopping, user do not
need to set RF channel. For more detail about the performance of the RF
module itself, please refer to DIGI website.
ii. Antenna
A 5dBi undirected antenna is included. The antenna cannot be replaced by the
customer due to the restriction from telecom certificate. If the antenna direction
is the same between rMICA-master and rMICA-vibration, the communication
distance will be maximized.
iii. Wireless range
With a communication speed of 100kbps, the maximum transmission distance is
100m outdoor and 50m indoor. With obstacles between rMICA-master and
rMICA-vibration, the distance could be significantly reduced.