DI604A
Compact speed monitor M18
6
4 Function
The unit has two independently configurable switching channels.
About the measuring function:
The sensor measures the time between 2 successive transitions from “undamped” to “damped”. The
pulse/pause ratio undamped/damped is not relevant, but both the damped and undamped states
should be reliably detected.
If the frequency determined from this time [1/min] is below the last measured value, the output speed
decreases with 1/t. At less than 0.5 pulses/min, 0.0 pulses/min is measured. There is no underload.
An overload is present at over 32,000.0 pulses/min (533 Hz).
4.1 Single-point mode
SP1
H
SSC
0
PDV
OFF
ON
Fig. 1: Normally open = low active (factory setting)
SP1:
Switch-off point
SP1+H: Switch-on point
If a set rotational speed is not reached, the transistor output will signal this as non-conducting.
H
SSC
0
PDV
SP1
ON
OFF
Fig. 2: Normally closed = high active
SP1:
Switch-on point
SP1+H: Switch-off point
If a set rotational speed is not reached, the transistor output will signal this as conducting.
Imp./min.
3000
2500
2000
1500
1000
500
0
1
0
1
0
OUT
2
3
4
1
OUT
SP1 + H
SP1
t
1:
Power-on delay time
2:
Start-up delay
3:
Normally open = low active
4:
Normally closed = high active
