Hengstler Tico 772 Instruction Manual page 122

Output signals
Mode
of
operati
on:
Display unit:
Min. input
frequen
cy:
Startup
suppres
sion:
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6
Tachometer
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The tachometer uses the following limit values:
P 1 and 2 are limit (range) signals
Output-Signal 1 is active at the displayed value of < P 1 and
Output-Signal 2 is active at the displayed value of > P 2
Output-Signal 0 is active at the displayed value of > P 0; (application output)
Programmable: 1/sec or 1/min
Using the setting 1/min and prescaler 60 the display will show 1/hour.
Programmable 1 Hz or 0.1 Hz.
If two edges do not occur within 1 s or
respectively, 10s, a value of 0 will be displayed.
Programmable Yes/No
During the startup the lower limit signal is suppressed until the lower limit
value is exceeded for the first time.
The startup suppression will become active again, if the minimum frequency is
fallen below.
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