Operating Principle - IFM Electronic ecomat200 FD-2 Notice D'utilisation

3. Operating principle

The monitor takes pulses of external pulse pick-ups at 2 separate input channels,
evaluates their time offset and switches the 2 outputs according to the set para-
meters. In principle, it can be said:
• for the pulse sequence IN1 before IN2 output 1 switches,
i.e. relay 1 is energised, transistor output 1 is switched. (Relay 2 is de-energised,
transistor output 2 is blocked.)
• for the pulse sequence IN2 before IN1 output 2 switches,
i.e. relay 2 is energised, transistor output 2 is switched. (Relay 1 is de-energised,
transistor output 1 is blocked.)
Even in case of a temporary standstill the output remains switched
• until the pulse sequence changes or
• until the output is reset by the programmable reset time or
• until the operating voltage is switched off.
The display indicates the current rotational speed [RPM] or input frequency [Hz] at
the input channel IN1 or the last detected pulse sequence [0/1/2DIR].
0DIR = no pulse sequence (direction of rotation) detected
1DIR = pulse sequence IN1 before IN2
2DIR = pulse sequence IN2 before IN1.
Please note:
The input pulses must be phase-shifted and overlap for about 0.25 ms.
switching cam
Schaltnocken
Impulsgeber
pulse pick-ups
IN 1 IN2
MONITOR
FD-2
OUT 1 OUT2
AUS EIN
OFF ON
IN1
IN2
≥ 0,25 ms
FD-2
MONITOR
Example
IN2 before IN1
(here right rotation)
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