REOVIB MFS 368
Operating instructions
8
t ON
t OFF
Sensor
Feeder
ON
OFF
ON
OFF
Soft Start
Soft Stop
whether parts pass the sensor within a period of time (e.g. no-load signal). As an alternative to the
material flow control, the sensor input can be used for switching to a second, internally adjustable
setpoint, e.g. to realise a "fast/slow" function. In parallel with control of the feeder, a 24 V DC output is
available for the IP54 housing version, which can control a blowing air valve to support the parts flow.
This output can switch on before the feeder starts and switch off with a time delay after the feeder has
switched off. The time delays are adjustable. Depending on the conveyor, the nominal unit current can be
set between 5% and 100%. If the current limit is reached, the output voltage is reduced so that the current
limit is not exceeded. Sensitive settings such as current limit and frequency limits are combined in a limit
menu. Settings in the menu can only be made after enabling the key number in the "Service menu". In the
service menu, the current settings can also be saved and the factory settings of the units can be restored.
2.1 Track control
Via internal, adjustable
time steps ("t on" and "t
off"), the output is
switched ON or OFF
depending on the
material level measured
via a track component
sensor. The level of the
conveyed material thus
varies around the
position of the track component sensor installed on the feeder. The output of the control unit is switched
on when the conveyed material falls below the sensor and the set switch-on time delay has elapsed. If the
conveyed material exceeds the position of the sensor, the control unit's output is switched off after expiry
of the switch-off delay (indication in the display: " full"). Gaps in the flow of conveyed material reset
the time stages. The times are always determined by the last or first conveyed part.
The switch-on or switch-off delay time is set in the programming menu. The run-down of the internal time
stages is shown by the clock in the display.
When the feeder is switched on, a further time stage "sensor timeout" can be started, which switches
the feeder off after an adjustable time (1...240 sec.) if no material parts have passed the sensor within this
time. When the feeder is switched off, the status relay also switches off. The display then shows "Track
Timeout and Info 0001" flashing alternately. This function is optional and must be activated in the track
control menu with function "Timeout On" = .
2.2 Operation with two speeds (2
nd
setpoint for coarse/fine switching)
Instead of track control, coarse/fine operation can also be used. Switching to the second setpoint is done
via the sensor input that is otherwise used for track control. Switching can be done with a contact or an
external 24 VDC signal voltage. If a 24 V signal is present, the system switches to the second setpoint
"Fine" without any time delay.
(The track control function is not available.)
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