Festo SFAB - Assembly and Installation Methods; Wall and Plate Mounting; Pneumatic and Electrical Installation; Commissioning Binary Outputs

7.2 Wall mounting
Fig. 3 Wall mounting
1. Maintain lateral distance x =mm to earthed surfaces.
2. Fasten the adapter plate with 2 screws M3.
3. Hang the SFAB in the adapter plate.
4. Press SFAB in the direction of the arrow.
Ä
SFAB snaps into place.
7.3 Plate mounting
Fig. 4 Plate mounting
1. Maintain lateral distance x =mm to earthed surfaces.
2. Fasten SFAB with washers and 2 screws M4.
– Tightening torque: 1Nm
7.4 Rotate display
The display can be rotated in 90° steps. The turning range is limited to approx.
270° by a stop.
Fig. 5 Rotate display
8 Installation
8.1 Pneumatic installation
• Mount the hoses to port 1 and port 2 (flow direction èmarked on the
product).
If the tubing is incorrect, the measured values are shown flashing on the display.
8.2 Electrical installation
WARNING!
Risk of injury due to electric shock.
• For the electrical power supply, use only PELV circuits in accordance with IEC
602041/EN 602041 (Protective ExtraLow Voltage, PELV).
• Observe the general requirements of IEC 602041/EN602041 for PELV cir
cuits.
• Only use voltage sources that ensure a reliable electric separation from the
mains network in accordance with IEC 602041/EN 602041.
1. Use signal lines that are shorter than 10m.
2. Configure binary outputs according to the wiring.
– Tightening torque for the union nut at the plug connector is max. 0.5Nm
Pin Wire colour
1)
Allocation Plug
1 Brown (BN) Operating voltage
+24VDC
2 White (WH) Binary output B (OutB)
3 Blue (BU) 0V
4 Black (BK) Binary output A (OutA)
5 Grey (GY) Analogue output C
M12, 5pin
1) When using the connecting cable as per Accessories.
Tab. 1 Pin allocation
Circuit diagrams
SFAB-...-2SA SFAB-...-2SV
I
q
BN
+24 V
1
WH
BK
BU
0 V
GY
RL
PNP/NPN
4
2
5
3
q
BN
+24 V
1
WH
BK
BU
0 V
GY
RL
PNP/NPN
U
4
2
5
3
Tab. 2 Circuit diagrams
9 Commissioning
1. Switch on the operating voltage.
Ä
SFAB is in RUN mode.
2. Define the switching behaviour of the binary outputs.
– For flow measurement [FLW]: switching points [SP] and hysteresis [Hy]
– For cumulative air consumption measurement [ConS] only with OutA:
consumption switching impulse [CI]
9.1 Switching outputs
9.1.1 Switching functions
9.1.1.1 Threshold value comparator in the flow rate measurement for OutA or
OutB
Function NO (normally open) NC (normally closed)
Switching function:
– 1 switching point (SP)
TEACH mode:
– 2 teach points (TP1, TP2)
Tab. 3 Threshold value comparator
9.1.1.2 Window comparator in the flow rate measurement for OutA or OutB
Function NO (normally open) NC (normally closed)
Switching function:
– 2 switching points (SP.Lo,
SP.Hi)
TEACH mode:
1)
– 2 teach points (TP1, TP2)
– TP1 = SP.Lo, TP2 = SP.Hi
1) SP.Lo = smaller value, SP.Hi = larger value, independent of the teach sequence
Tab. 4 Window comparator
9.1.1.3 Consumption switching pulses [CI] for cumulative air consumption
measurement for OutB
A threshold value for air consumption can be set with the consumption switching
impulse [CI]. If the set threshold value is reached, a switching impulse is emitted
at the output OutA for 100ms. With each switching impulse, measurement of the
air consumption is started again.