Emerson Machinery Health AMS 6300 SIS Operating Manual page 44

Overspeed protection system
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Installation and commissioning
February 2023
Select the operating mode (open-circuit mode or closed-circuit mode) for the Channel OK
output during the monitor configuration (see
Figure 4-18: Connection example function outputs
A. Monitor A, B, or C
B. PLC
Pulse outputs
The speed monitors are equipped with pulse outputs to supply external systems with
pulses (see
frequency as the measured input signal.
Each speed monitor has three (X, Y, and Z) collector emitter paths (pulse outputs),
electrically isolated from each other and from the remaining circuits of the AMS 6300 SIS.
They are connected through the corresponding digital terminal block. An external supply
is required for operating a pulse output. Connect the external supply as shown in
4-21. The output pulses have voltage levels of VCC-4 V (see
Figure 4-19: Pulse
Switching Voltage VCC = 24 V
As the pulse outputs are collector-emitter paths, a minimum load is required to achieve a
sufficient interpulse period T
Generally, the load resistance corresponds to the input impedance of a pulse input circuit
and depends on the interpulse period T
44
Table 4-3
connection). The pulse outputs provide signal pulses with the same
and thus a proper switching process of the output.
Pause
Group Output
functions).
Figure
.
Figure 4-20
shows the maximum resistance
Pause
Operating Manual
MHM-97442
Figure
4-19).
MHM-97442, Rev. 2.06

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