Electrical Connections - WIKA HP-1 Mode D'emploi

7. Starting, operation
Electrical connection
 Connect the instrument to earth via the pressure connection.
 Operate the pressure transmitter with a shielded cable and earth the shield at least on
one side of the cable, if the cable is longer than 30m (2-wire) or 3m (3- or 4-wire), or if
it is run outside of the building.
Use power supplies which guarantee reliable electrical isolation of the operating

voltage as per IEC/DIN EN 60204-1. Consider also the general requirements for PELV
circuits in accordance with IEC/DIN EN 60204-1.
Ingress protection per IEC 60529 (The ingress protection classes specified only apply

while the pressure transmitter is connected with female connectors that provide the
corresponding ingress protection).
Ensure that the cable diameter you select fits to the cable gland of the connector.

Ensure that the cable gland of the mounted connector is positioned correctly and
that the sealings are available and undamaged. Tighten the threaded connection and
check the correct position of the sealings in order to ensure the ingress protection.
 Please make sure that the ends of cables with flying leads do not allow any ingress of moisture.

Electrical connections

L-connector DIN
175301-803 A
2-wire UB = 1 0V = 2
3-wire UB = 1 0V = 2 S+ = 3 UB = 1 0V = 3 S+ = 4 UB = brown 0V = green S+ = white
up to max. 1.5 mm 2
Wire gauge
Diameter of cable 6-8 mm
Ingress protection per IEC 60 529 IP 65
The ingress protection classes specified only apply while the pressure transmitter is
connected with female connectors that provide the corresponding ingress protection.
8 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio HP-1/HP-2
Circular connector
Flying leads
M12x1
UB = 1 0V = 3 UB = brown 0V = green
0.5 mm 2 (AWG 20)
-
- 6.8 mm
IP 67 IP 67
GB
7. Starting, operation
Assembly of L-connector DIN EN 1701-80
(D) Mounting hole
1. Loosen the screw (1).
2. Loosen the cable gland (2).
3. Pull the angle housing (5), with the
terminal block (6) inside, away from the
instrument.
4. Using the head of a small screwdriver in
the mounting hole (D), lever the terminal
block (6) out of the angle housing (5).
In order not to damage the sealing of the angle housing, do not try to push the terminal
block (6) out using the screw hole (1) or the cable gland (2).
5. Ensure that the conductor outer diameter you select is matched to the angle housing's
cable gland. Slide the cable through the cable gland nut (2), washer (3), gland seal (4) and
angle housing (5).
6. Connect the flying leads to the screw terminals on the terminal block (6) in accordance
with the pin-assignment drawing.
7. Press the terminal block (6) back into the angle housing (5).
8. Tighten the cable gland (2) around the cable. Make sure that the sealing isn't damaged
and that the cable gland and seals are assembled correctly in order to ensure ingress
protection.
9. Place the flat, square gasket over the connection pins on the top of the instrument
housing.
10. Slide the terminal block (6) onto the connection pins.
11. Secure the angle housing (5) and terminal block (6) to the instrument with the screw (1).
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio HP-1/HP-2
GB
(1)
(2)
(3)
(5)
(4)
Female
connector
(6)
Sealing
Clamping nut,
Male connector,
Case with
pressure connection