22
UH 6932 / 21.08.18 en / 010A
Device and function description
Muting function
The speed monitoring function can be overridden on the display and by an
appropriate activation of the software Digital Inputs: SW1 to SW4. For this
purpose, the muting function should be activated when parametering on the
display. Once this function is activated, then it will continue to be possible to
continue to switch over between the speed moduses: 1 to 3, as described
above. Should a selection be made of the speed mode 4 (muting) via the
‘SW’ software inputs, then no further speed monitoringwill be conducted.
The output relays remain permanently on and the start-up delay function
(t
A
), the switchover time period function (t
U
), the reset-delay function (t
F
)
and the alarm-delay function (t
V
) will all be reset.
Analogue output A+ and A GND
The analogue output 2-10 V shows the actual measured frequency. The
maximum value of the analogue output (10 V) is equal to the adjusted
upper frequency threshold. The minimum value of the analogue output
(2 V) is equal to the adjusted lower frequency threshold. The scaling is
frequency linear.
In the monitoring function „underfrequency“ the maximum value of the
analogue output is equal to the highest possible setting value of the device
(2000 Hz).
In the monitoring function „overfrequency“ the minimum value of the ana-
logue output is equal to 0 Hz.
If the muting function is selected, the maximum value of the analogue
output is equal to the maximum setting value of the device (2000 Hz) and
the minimum value is equal to 0 Hz.
In the case of a failure the analogue output goes to 0V.
The analogue output is not safety related. It can be used for diagnosis.
Switchover time period t
U
The switchover time period expires when the speed mode is altered during
operations at the Software Inputs: SW1 to SW4, the output contacts are
closed, no start-up delay function is running and the Switchover Time Period:
‘tU’ has not already been initiated and/or is running. During this time period,
no speed monitoring is conducted and the output contacts remain on.
Summary of Contents for SAFEMASTER S UH 6932
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