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SECTION 32 - MOTOR MONITORING
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
32
This board resides in an enclosure that is mounted
separately from the OptiView Control Center. The Mo-
tor Monitoring Board receives the outputs of the sen-
sors and transmits the sensor values to the microboard
COM3 port via RS-485 Modbus serial communica-
tions. The microboard sends the temperatures, vibra-
tion values and leak status to the display. It also com-
pares these parameters to warning and safety shutdown
thresholds. When the parameter exceeds the warning
threshold, a warning message is displayed. When it
exceeds the safety threshold, a safety shutdown is per-
formed.
The motor monitoring feature must be enabled on
the SETUP Screen. When enabled, the MOTOR DE-
TAILS screen and MOTOR SETPOINTS screen are
available, where all information pertinent to this fea-
ture is displayed as follows: The MOTOR DETAILS
screen displays the temperature and vibration values,
along with the leak status. It also allows a service
technician to individually enable/disable the winding
temperature, bearing temperature, vibration and cool-
ing coil leak monitoring or enable the sensor type,
based on the actual equipment applied. The MOTOR
SETPOINTS screen allows a service technician to en-
ter the WINDING and BEARING HIGH TEMPERA-
TURE warning/safety shutdown thresholds, the high
vibration warning/safety shutdown thresholds, set
the vibration input gain and enable/disable individual
winding temperatures. Procedures to enter these set-
SECTION 33 - SYSTEM CALIBRATION,
SERVICE SETPOINTS, AND RESET PROCEDURES
of this manual.
MOTOR MONITORING BOARD
There are two versions of this board. The difference
between the boards is the component population. The
board part number is 031-02893-XXX (with XXX be-
ing -000 or -001). The different boards are identified by
the 3-digit suffix (-000 or -001). The -001 board is fully
populated and can be used in any application. On the
-000 board, the RTD analog input and vibration analog
input components are not populated. Therefore, it can-
not be used in applications requiring those sensor types.
The board accepts both analog and Digital inputs from
).
It transmits the data to the microboard using Modbus
RS-485 serial communications. In some applications,
certain sensors are connected to the VSD, instead of
the Motor Monitoring Board, and the data is sent to the
microboard via the VSD to Microboard RS-485 Mod-
bus Serial Communications.
The board re24 VDC, +12 VDC and -12 VDC
power at TB4. The +12 VDC is applied to a +5 VDC
regulator to create the +5 VDC supply voltage. The
POWER LED (CR6) illuminates when this +5 VDC is
present. The +24 VDC is applied to a +15 VDC regula-
tor to create the +15 VDC supply voltage. These volt-
ages can be read at the following Test Points:
TP1 GND
TP2
+5 VDC
TP3
+12 VDC
TP4
+24 VDC
TP5
-12 VDC
TP6
+2.5 VDC reference
TP7
+1.25 VDC reference
TP8
+15 VDC
TP9
+12 VDC filtered
When the onboard program is running and operating
normally, STATUS LED (CR8) blinks 2 times a second.
The Motor Monitoring Board communicates with the
microboard using RS-485 Modbus serial communica-
tions. Every 2 seconds, the microboard reads data from
and sends commands to the Motor Monitoring Board.
The RX LED (CR12) illuminates as the data bits pass
by the LED arriving on the Motor monitoring Board.
The TX LED (CR13) illuminates as the data bits pass
by the LED, leaving the board. The Network Address
of this board is 2. This is set with the NETWORK AD-
DRESS switch SW1 as follows:
(Off = Switch open, On = Switch closed)
1=Off
2=On
4=Off
8=Off
The board does not contain a separate program stor-
age device. The boards are programmed at the time of
manufacture, and the program cannot be changed in
the field.
