Mode Display - Festo SDE5 Series Operating Instructions Manual

Caution
After teaching, the values are written to the internal memory. If the saving
process is unexpectedly aborted (e.g. from a power interruption), the transfer
process to the memory can not be completely carried out and the device
becomes unusable.
• Ensure that there is power supply to the device for at least 10 seconds after
teaching.
Note
Unintended pressing of the Edit button can cause an accidental alteration of the
pre-set switching pressure (e.g. setting the SDE5, when the operating pressure
is missing, to a switching pressure of 0 bar).
Definitions:
– Pressure p: relative pressure or differential pressure,
(also vacuum with SDE5-V1/B2).
– Switching pressure SP: pressure p at which the SDE5 switches.
– Teach pressure TP1, TP2: pressure p at time of programming.
5.1 SDE5-...X without Edit button
The SDE5-...X without Edit button is pre-set at the factory with fixed switching
pressures. The SDE5-...X does not require further setting for commissioning.
5.2 SDE5-...-NF-...-V with analogue output
1. Switch on the operating voltage.
The LED lights up green.
2. Pressurize the SDE5 with the desired pressure p.
The pressure measurement value at the analogue output is an electrical
pressure-proportional signal in the range 0 ... 10 V depending on the
pressure measuring range (
Signal range analogue output
Pressure measuring range [bar] SDE5-V1
SDE5-B2
SDE5-D2
SDE5-D6
SDE5-D10
Fig. 13
5.3 SDE5-...-O/C-...-P/N with switching output
Set the switching pressure SP with one teach pressure TP1
1. Switch on the operating voltage.
2. Pressurize the SDE5 with the desired teach pressure TP1.
3. Press the Edit button (› 2 s) until the LED flashes.
4. Let go of the Edit button.
The current teach pressure TP1 is saved as the switching pressure SP.
5. Ensure that there is power supply for at least 10 seconds.
6. Carry out a test run with various pressures to ascertain whether the SDE5 switches
as desired. When the switching signal is emitted, the LED also lights up.
Signal curve over the applied pressure p with switching points
Mode NO contact
Mode 0: SDE5-...-O
Threshold value
comparator
(threshold value
with fixed
hysteresis)
TP1 = teach pressure, SP = switching pressure, Hy = hysteresis, A = switching output (Out A)
Fig. 14
Note
The switching output behaviour of the SDE5-B2 and of the SDE5-V1 differ from
each other in the vacuum range 0 ... -1 bar
1) Example for switching point at – 0.5 bar, supply pressure = 0 bar:
switching status SDE5-V1-O-...: output open, switching status SDE5-B2-O-...: output closed.
5.4 SDE5-...-O1/O2/O3/C1/C2/C3-...-P/N with switching output
Set the switching pressure SP with two teach pressures TP1/TP2
1. Switch on the operating voltage.
2. Pressurize the SDE5 with one teach pressure, e.g. for TP1 (you could also start
with TP2, since the normally closed and normally open functions are specified).
3. Press the Edit button (› 2 s) until the LED flashes.
4. Let go of the Edit button.
The current teach pressure TP1 is saved.
The LED flashes.
Fig. 13).
0 V ... 5 V ...
0 ... –0.5 ...
–1 ... 0 ...
0 ... 1 ...
0 ... 3 ...
0 ... 5 ...
NC contact
SDE5-...-C
1)
.
5. Pressurize the SDE5 with the other teach pressure, e.g. TP2.
6. Press the Edit button until the LED stops flashing.
7. Let go of the Edit button.
The current teach pressure TP2 is saved.
8. Ensure that there is power supply for at least 10 seconds.
9. Carry out a test run with various pressures to ascertain whether the SDE5 switches
as desired. When the switching signal is emitted, the LED also lights up.
Signal curve over the applied pressure p with switching points
Mode
Mode 1:
Threshold value compar-
ator (threshold value
with fixed hysteresis,
switching pressure
SP = 1/2 (TP1 + TP2)
Mode 2:
Hysterisis comparator
(threshold value with
variable hysteresis)
Mode 3:
Window comparator with
fixed hysteresis
10 V
–1
1
2
6
10
TP = teach pressure, SP = switching pressure, Hy = hysteresis, A = switching output (Out A)
Fig. 15
5.5 SDE5-...-FP-...-P/N with switching output

Mode display

The LEDs display the current mode by flashing (e.g. 3 x flashes for mode 3).
The mode is displayed a total of 5 times in succession before the SDE5 returns to
the RUN mode.
Mode 1
LED flashing
sequence for the
set mode
LED flashing se-
quence with
change of mode
Fig. 16
Set mode
1. Switch on the operating voltage.
2. First briefly press the Edit button 1 time (š 2 s) and then let go of the Edit button.
The LED displays the mode currently set (
3. While the mode is displayed, press the Edit button again until the desired mode
is displayed for the operation.
4. Let go of the Edit button.
The current mode is saved.
5. Ensure that there is power supply for at least 10 seconds.
Note
The switching pressure SP must be reset after the mode is selected or changed.
NO (normally open) NC (normally closed)
SDE5-...-O1 SDE5-...-C1
SDE5-...-O2 SDE5-...-C2
SDE5-...-O3 SDE5-...-C3
Mode 2 Mode 3
5 x
5 x
Fig. 16).
5 x
...