23
7 Mounting
7.3
Electrical connection
Connect the device as follows:
1. Unscrew the screw on the flap and open the flap.
2. Loosen the four screws on the housing lid.
3. Set the lid to one side.
4. Screw on the cable fittings.
5. Guide the cable through the union nut through the cable fitting.
6. Check whether the grounding cable (from the housing) is connected as shown in the figure in
chapter 7.3.3 "Terminal assignment and use of a selection switch", page 26.
7. Lay the cable according to chapter 7.3.1 "Make sure that the potential is equal in the installation",
page 24 to chapter 7.3.7 "Connecting the relay outputs DO2 and DO3", page 30.
Risk of electric shocks!
Restrict the maximum operating voltage to DC 35 V if the unit is used in a humid environment or out-
doors.
Before working on the system or device, switch off the voltage and secure it so that it cannot switch on
again.
Always observe the relevant accident prevention regulations and safety requirements for electrical de-
vices.
NOTE!
The device may leak if you do not use at least one of the cable fittings.
1. Insert the provided plugs into the cable fittings not in use.
2. Unscrew any cable fittings not in use.
3. Remove the transparent pane.
4. Insert the plug.
5. Tighten the cable fitting's union nut.
NOTE!
Use a high-quality power supply (filtered and controlled).
Protect the potential equalization of the installation,
see chapter 7.3.1 "Make sure that the potential is
equal in the installation", page 24.
Use a shielded cable with an operating temperature limit above 80 °C.
Avoid laying the cable near the high-voltage or high-frequency cables; if you cannot avoid doing so,
maintain a minimum gap of 30 cm.
Protect the power supply with a fuse (300 mA) and circuit breaker.
Protect the relay with a fuse (max. 3 A) and an automatic circuit break (suited to the process).
Do not connect a dangerous voltage and a protective low voltage supply to the relay at the same time.
NOTE!
If you are using two cables in one cable fitting, insert the multi-way seal into the cable fitting first.
