Wiring Connections - Dedicated Micros Dennard 2025 Manuel D'installation

10. Wiring connections

Electrical connections to the Dennard 2025 illuminator are made via terminal blocks inside the
power supply unit.
To access the connections remove the 4 cover screws on the power supply and remove the top
cover.
WARNING: Ensure the mains supply is isolated at all times whilst the cover is removed from the
power supply.
The mains supply should be fitted with a circuit breaker as a method of disconnecting the supply for
maintenance. The circuit breaker shall be accessible and labelled such that it is easily identified as
the disconnect device for this particular unit. The device shall comply with IEC 60947. The
disconnect device and all wiring shall be of adequate rating to comply with the input requirements
of the PSU as stated in the specifications section.
The mains cabling shall comply with national wiring regulations.
Ensure the mains input cable is prepared as in figure 8. Feed the cable through the lower cable
gland and secure the gland nut using a torque of 1.8Nm. Use the cable tie to secure the cable to
the mounting post provided as shown in Figure 7.
Connect the cable from the illuminator into the connector and earth point as shown in fig 7. Use the
cable ties provided to attach the cable to the photocell wires which are routed around the right hand
side of the enclosure. Ensure the correct polarity is observed. The red sheathed wire connects to
the positive terminal, labelled as 'LED ARRAY +ve' on the PCB.
WARNING: Do not increase the cable length, as this may cause performance problems with the
unit. You may shorten the cable to a minimum length of 1m.
2025 Installation Manual Page. 9