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Operating Manual
MHM-97442
when the speed value of the channel reaches the limit value or if Channel OK is switched
off.
Trip limit value
Example with a maximum speed = 4000 rpm:
Trip limit value
In this example, the trip limit must not be lower than 2680 rpm and must not exceed 4000
rpm.
Group Parameter for output functions
Standstill
Enter here the standstill time. It defines how many seconds must elapse before standstill is
indicated through a function output with function Standstill after the last pulse is
detected at the signal input. The configured standstill time has to be longer than the time
between two measured pulses at the lowest speed. The message Standstill is reset as soon
as a new pulse is detected at the signal input.
Limit value suppression
Place a checkmark in this box to activate the limit suppression for outputs configured with
the following functions:
•
>= Limit Value
•
<= Limit Value
•
>= Limit Value + Latch
•
<= Limit Value + Latch
•
Outside window
•
Inside window
•
>= Acceleration limit value
•
<= Acceleration limit value
•
>= Acceleration limit value + Latch
•
<= Acceleration limit value + Latch
•
Acceleration outside window
The function outputs assigned are suppressed, if Channel OK (OK) is not true.
If alarm channels are suppressed, the outputs are set to their default states and the
relevant LEDs are switched off. The initial states of the outputs are defined by parameter
Digital Outputs → Mode.
Group Output functions
Define here function, mode, and, if applicable, limit values for each of the six function
outputs.
Function
Assign one of the following functions to the outputs:
MHM-97442, Rev. 2.06
= Maximum speed * 0.67
min
= 4000 rpm * 0.67 = 2680 rpm
min
Configuration
February 2023
113
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