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• Filter - outputs with reference to parameters F.0 and r.A
DON = Delayed activation
Alarm
setpoint
Variable
Output
Alarm
rA
DOF = Delayed deactivation
Alarm
setpoint
Variable
Output
Alarm
rA
Configure the instrument to show motor axle speed in rpm, connected to an encoder as per the diagram.
D
= encoder pulley diameter [ m ]
pe
D
= motor pulley diameter [ m ]
pm
ω
= encoder angular velocity [ rpm ]
e
ω
= motor angular velocity [ rpm ]
m
K
= number of pulses per encoder rev [ clock / rev ]
e
ω
τ
D
e
pm
=
=
= drive ratio
ω
D
m
pe
f = frequency in input to instrument [ Hz ]
K
is defined as multiplicative constant of instrument:
s
Value shown [ rpm ] = K
s
6
The diagrams refer to a normal absolute alarm with hysteresis H = 0
F.0 = 1
rA
time
t < rA
F.0 = 3
rA
rA
time
Applicative example
MOTOR
ω
m
1
ω
•
e
60
1
D
pm
ω
f = K
•
•
•
•
s
m
60
D
pe
Alarm
setpoint
Variable
Output
Alarm
Alarm
setpoint
Variable
Output
Alarm
D
pm
D
pe
ω
e
K
•
e
K
•
e
F.0 = 2
DBI = Delay in turning on output after output is
turned off
t < rA
rA
t > rA
F.0 = 4
DP0 = Delayed activation only at power-on
rA
ENCODER
K
e
f
81671B_MHW_40F96_0308_ENG
time
time
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