5.8 Automatic on/off control
Controller type: UA 141 only
The counter can be switched on and off by a voltage pulse (on-site push button switch, min. 6 sec.) at the 230
V AC counter shutdown digital input. As with manual shutdown, all controlled functions are switched off. The
functionofthedigitalinputcanbeconfiguredviatheparameter„Inv. D3" (i.e. Inv. D2) in menu 6-2-4.
Additionally, electrical loads on the counter that are not controlled, e.g. lighting, fans and frame heaters, can be
switched on and off through an external relay at the transistor output (terminals 91/92/93).
Switch-on:
Up to 7 control times for automatic restarting of the counter can be set on an internal timer. The same 230 V
input is usable as an external input for setpoint toggling, in which case the on-off function will not be available.
The counter is switched on either by a voltage pulse applied to digital Input 2 or by the control times. The
transistor output (terminals 91/92/93) is set to 24 V / 50 mA.
Switch-off:
As with manual shutdown, all controlled functions are switched off by the voltage pulse applied to digital Input 2
(terminals D21/D22). The transistor output (terminals 91/92/93) is set to 0 V.
Warning - hazardous electrical voltage! Danger of electric shock! BEFOREconnectingand
disconnectingitmustbecheckedthatthe230VACdigitalinputsareoff load! The controller and
connected voltage carrying components remain supplied with power!
Counter shutdown can be activated via digital Input 2 (terminals D21/D22, factory setting. This requires
digital Input 2 to be set as AUTO ACTU. for the switch on/off function to be available.
Parameters of the internal restart time are displayed and can be adjusted when setpoint toggle is set to
"INT" or "---" (see Screen 3-3 in the UA 141 menu structure).
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