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Product Information / Produktinformation A6150
Bearing Vibration Monitor
To activate the bus terminator and to place lines "A" and "B" on the references, plug the jumpers
as shown in Fig. b). Fig. a) shows the jumper position for deactivated bus termination and open
references (delivery status).
•
Plug−in jumper 1−2 closed:
•
Plug−in jumper 3−4 closed:
•
Plug−in jumper 5−6 closed:
i
1.5.3 Sensor raw−signal
The sensor raw signal (unfiltered, in−phase output signal of the converter with AC and DC
portion), applied to the front panel SMB sockets, can be switched over with the J2 jumpers on
terminals z14: channel 1 and z16: channel 2 of the connection strip. As delivered, the J2 jumpers
are set, that on terminals z14 and z16 the buffered AC part (DC− filtered) of the sensor raw signal
is applied. The controller board must be removed in order to switch the signal on the connection
strip. The following points describe the procedure:
i
STOP
1.
Use a cross−head screwdriver to remove the four cross−headed screws, identified with the
arrows, in the following figure.
Bus line "B" via pull−down resistor on ground
120 Ω Resistor between "A" and "B"
Bus line "A" via pull−up resistor on +5 V
2
4
6
1
3
5
a)
For trouble−free operation of the RS 485 bus, the lines "A" and "B" in one
monitor must be connected on their references (+5 V, ground), this is only
possible if the bus terminator jumper is also set in this monitor.
The reference point for the raw sensor signal from channel 1 is the connection
strip terminal b22: GND, and for the raw sensor from channel 2 the terminal
b24: GND.
When working at the monitor, ensure that there is adequate protection against
electrostatic discharge. For examle, wear an ESD bracelet to prevent elec-
trostatic discharge via the monitor electronics.
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2
4
6
1
3
5
b)
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