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SATEL 

OPU-4 P/OPU-4 PW 

1.  Mounting of the housing 

1.  Insert the plastic plugs for PCB fastening into appropriate holes in the housing base (the 

marks make it easier to select the suitable holes – see Figure 1 and Table 1). 

2.  Run the cables through the holes in housing base. 
3. Using four screws, secure the housing base to the mounting surface (if there are 

problems with laying the cables, use spacers to mount the housing at a distance of 6 mm 
from the surface). 

4. Using a screw, secure the tamper element to the mounting surface (next to the 

transformer place). 

5.  If a device with power supply unit is to be installed, screw down the transformer to the 

housing base. Connect the 230 V AC power cables to the corresponding transformer 
terminals. 

Never connect two devices with power supply to one transformer. 

Before connecting transformer to a circuit from which it will be powered, make 
sure the circuit is de-energized. 

Transformer capacity must match the DC power supply output capacity. 

When mounting several devices in one housing, draw up a load balance so as 
not to cause overloading of the power supply used. The sum of maximum 
currents consumed by the modules and the battery charging current must not 
exceed the power supply output current. 

6.  Mount the battery inside the housing, if the battery is required by the device. 
7.  Solder the leads to the tamper contacts. The contact on laminate board is to be screwed 

from above to the post inside the housing so as to be closed after the cover is replaced in 
position. The other contact is to be snapped in the housing base holder so that the metal 
plate is pressed against the tamper element attached to the mounting surface. 

8.  Mount the device PCB on plastic plugs and connect the leads to suitable terminals. 
9. When installing a device with power supply, connect the terminals of transformer 

secondary winding to the power terminals on the device PCB. 

10. If required by the device, connect the battery to the dedicated leads (the red one to the 

battery plus, and the black one to the battery minus). 

11. If the APS-30 power supply is to be mounted in the housing, secure the PCB with LED 

indicators to the post inside the housing, using two screws. Drill in the cover three holes 
which will accommodate the LEDs when the cover is closed. 

12. When installing additional devices in the holders, connect the wires to the terminals of 

those devices, and only then secure the devices in their holders. 

13. Replace the cover and secure it with two screws to the housing base. Stop the screw 

holes with special hole plugs included in the delivery set. 

2.  Specifications 

Dimensions OPU-4 P.....................................................................................266x286x100 mm 
Dimensions OPU-4 PW .................................................................................322x342x100 mm 
Dimensions OPU-4 PW, sunk in wall portion ...................................................266x286x65 mm 
Weight OPU-4 P ............................................................................................................... 920 g 
Weight OPU-4 PW.......................................................................................................... 1120 g 

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