Pilz PFU6 Data Sheet
Electronic Monitoring Relays
Fault voltage monitoring
PFU6
Technical Details PFU6
Electrical data
Supply voltage AC/DC: 24 ... 42 V, 42 ... 240 V
Tolerance 85 ... 110 %
Power consumption Max. 2 W/4 VA
Switching capability in accordance
with EN 60947-4-1, 02/01 AC1: 240 V/0.1 ... 5 A/1200 VA
EN 60947-5-1, 11/97 AC15: 230 V/2 A; DC13: 24 V/1.5 A
Output contacts 1 auxiliary contact (1 C/O)
Contact material AgCdO, 3 µm gold plating for
Contact fuse protection Max. 6 A quick or max. 4 A slow
in accordance with EN 60947-5-1, 08/01
Measuring circuit
The PFU6 monitors fault voltages on
welding transformers in accordance
with VDE 0545.
Features
● Monitors voltage of 6 secondary
windings on welding transformers
● Displays fault voltage and open
circuit
● Supply voltage can be selected:
24 V … 42 VAC/DC or
42 ... 240 VAC/DC
Approvals
PFU6
●
Measuring input 0 ... 690 VAC/DC
Frequency range 50 Hz ... 1 kHz
Response value 24 VAC/DC
Impedance of the measuring inputs 1 kΩ (ca. 1 kΩ up to 20 V, 20 kΩ at
Reaction time Max. 150 ms at response value x 1.1
Response resistance ca. 350 kΩ
Mechanical data
Max. cross section of external conductors 2 x 2.5 mm
Dimensions (H x W x D) 87 x 45 x 122 mm
Weight 240 g
Description
The PFU6 is enclosed in a P-97
housing.
Features:
● 6 measuring inputs
● Relay outputs:
1 auxiliary contact (1 C/O)
●
LED indicator for supply voltage,
overvoltage, open circuit, PE
connection
● Manual reset
● Test button
● Connection for an external test
and reset button
The PFU6 monitors the secondary
windings on welding transformers for
fault voltage. If the measured voltage
exceeds the response value of 24
VAC/DC, output relay K1 deenergises and the LED for the
affected measuring circuit will light.
DC1: 24 V/0.1 ... 5 A/120 W
low load range 1-50 V/1-100 mA
100 V, 250 kΩ at 500 V)
2
Single-core or multi-core with
crimp connectors
The PFU6 monitors the measuring
lines
for open circuits and also
monitors the PE connection. If the
resistance value exceeds the
response value of 350 kΩ, output
relay K1 de-energises and the LED
for the affected measuring circuit will
flash.
The unit logs the detected faults.
Once the fault has been rectified, the
unit can be restarted by pressing the
reset button.
An integral test function checks the
measuring circuits.
4
Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-307-2005-04
Electronic Monitoring Relays
Fault voltage monitoring
PFU6
Schematic internal wiring diagram
U
B
B3
A1 E1
A2
~
1
2
PE
Connection example
L1
N
PE
Measuring circuits
E2 F1 F2 G1 G2
Monitoring
H1 H2 J1 J2 YR YT Y0K1 K2
Measuring circuits Reset and test button
Aux. contact
12 14
RESET
TEST
K1
11
4
E1
E2 F1 F2 G1 G2
A1
A2B3
H1 H2
PFU6
12 14
11 YR YT Y0
J1 J2 K1 K2
1
Reset
Test
2
Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-307-2005-04
Loading...