IFM SU2020 - Pulse Signal Totaliser

Ultrasonic flow meter SU2020 SU8020 SU2021 SU8021 SU2621 SU8621
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When the Vol.1 totaliser has totalled the volumetric flow quantity set under [ImPS], the output provides
a switching signal. The output remains switched until a totaliser reset is carried out.
The totaliser reset for the totalisers Vol.1 and Vol.2 can be set via the parameter [rTo1] or [rTo2].
When the totaliser has been reset, metering starts again.
• [rTox] = OFF:
automatic reset of totaliser switched off.
A reset is done manually or in case of overflow.
• [rTox] = …h/d/w (hours/days/weeks):
automatic reset of the totaliser after the set time.
– If totaliser Vol.1 reaches the volumetric flow quantity [ImPS] before the set time, no automatic
reset occurs. The output remains switched until totaliser Vol.1 is reset manually or via overflow.
– Totaliser Vol.2 is independent of the settings of [ImPS]. Its count is not taken into account for
the switching and pulse signals.
The totalisers can be reset manually at any time via the [rTox] parameter. Totaliser Vol.1 can
additionally be reset via an external signal at pin 2.
See also: Totaliser reset (Ò/38).
Parameter setting via unit keys: Switching signal totaliser
ü Standard unit of measurement is selected: [EF] > [CFG] > [uni.x].
ü [rTox] is set: [EF] > [TOTL] > [rTox].
u Go to [EF] > [OUTx] to configure output OUTx.
u Select [SELx] and set the process value: [FLOW].
u Select [ou1] or [ou2] and set [ImP].
u Select [ImPSx] and set the volumetric flow quantity at which the output switches.
• Press ▲ or ▼ to select the setting range.
• Briefly press ● to confirm the setting range.
• Press ▲ or ▼ to set the requested numeric value.
• Briefly press ● to apply the value.
u Select [ImPRx] and set [No].
The parameter settings for [ImPS] and [ImPR] can be changed subsequently in the main menu.
Parameter setting via IO-Link: Switching signal totaliser
ü Standard unit of measurement is selected: [Parameter] > [Basic settings] > [uni.x].
ü [rTox] is set: [Parameter] > [Totaliser] > [rTox].
u Go to [Parameter] > [Output configuration].
u Select [SELx] and set the process value: [FLOW].
u Select [ou1] or [ou2] and set [ImP].
u Select [Parameter] > [Pulse output x].
u Select [ImPSx] and set the volumetric flow quantity at which the output switches.
u Select [ImPRx] and set [No].
10.3.3.2 Pulse signal totaliser
Pulse signals can be provided for consumed quantity monitoring.