Entrelec Schiele MFE Multifunction Flasher Timer Solid State Output 2.550.029.81 1C/O

Multifunction timer with 6 timing functions:
ON-delay, OFF-delay, impulse-ON, flasher starting with ON, flasher starting with OFF, pulse former

Timing can be started via an external, voltage-related control input

1 c/o (SPDT) contact
22.5 mm (0.89 in) width
2 LEDs for the indication of operational states

Application
Their conception makes the MFE range timers ideal for repeat applications. Multifunction timers are ideally suited for service and maintenance applications, because one device can replace a number of time relays with different functions, voltage and time ranges. This reduces inventory and saves money.

Operating mode
The MFE with 1 c/o (SPDT) contact provides 6 timing functions. The function is rotary switch selectable on the front of the unit. Each function is indicated by an international function symbol. One of 8 time delay ranges, from 0.05 s to 100 h, can be selected with another rotary switch. The fine adjustment of the time delay is also made via a rotary switch.

ON-delay (Delay on make)
Timing begins when control supply voltage is applied. When the selected time delay is complete, the output relay energizes.If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. Interrupting control supply voltage before the time delay is complete, resets the time delay. The output relay does not energize.
Control input A1-Y1 is disabled when this function is selected.

OFF-delay with auxiliary voltage (Delay on break)
This function requires continuous control supply voltage for timing. Timing is controlled by control input A1-Y1. If the control input is closed, the output relay energizes. If control input A1-Y1 is opened, the selected time delay starts. When the time delay is complete, the output relay de-energizes. If control input A1-Y1 is closed before the time delay is complete, the time delay is reset. Timing starts again when the control input re-opens.

Impulse-ON (Interval)
The output relay energizes immediately when control supply voltage is applied and de-energizes after the selected time delay time is complete. If control supply voltage is interrupted before the time delay is complete, the output relay de-energizes and the time delay is reset.
Control input A1-Y1 has to be jumpered, when this timing function is selected.

Pulse former (Single shot)
Closing the control input A1-Y1, with control supply voltage applied, energizes the output relay for the selected ON time. Operating the control input during timing has no effect. When the ON time is complete, the output relay de-energizes. Timing can be restarted by re-closing control input A1-Y1. If control supply voltage is interrupted during timing, the output relay de-energizes and the ON time is reset.

Flasher with symmetrical ON & OFF times, starting with the ON time (Recycling equal times, ON first)
Applying control supply voltage starts timing with symmetrical ON & OFF times. The cycle starts with an ON time first. If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset.
Control input A1-Y1 has to be open, when this timing function is selected.

Flasher with symmetrical ON & OFF times, starting with the OFF time (Recycling equal times, OFF first)
Applying control supply voltage starts timing with symmetrical ON & OFF times. The cycle starts with an OFF time first. If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset.
Control input A1-Y1 has to be jumpered, when this timing function is selected.