Yes, however a compatibility survey should be conducted before committing to the upgrade and service.
You need to ensure the devices connected to Designer 4 routers will be compatible when the routers are upgrade to Designer 5. There are several methods you could follow to check this, the below survey method has been successfully trailed and deemed to be the least disruptive for a live site.
Ideally the survey would be performed on every subnet on the site to get full compatibility coverage. This will not be practical majority of the time, what you should be looking for is if all devices from the D4 routers are found and work normally in D5. Picking subnets where you get the most variety of devices to the point where you think you’ve had at least 1 of each type of device on site checked should be the goal of the survey. The recommended steps are as follows:
- Take a fresh version 5 router with you to site. We'll refer to this as the "test router"
- Connect to the test router with Designer 5 software on site and start recording DALI logs to file and window
- Disconnect a subnet from a site router and plug into the D5 test router
- Check all devices are discovered as expected and you can control the lighting in Designer 5 e.g. put them all in a group and trigger some scenes from actual button panels and sensors
- Save the DALI log AND Design file with an appropriate name e.g. Riser lvl1 router1
- Connect the subnet back to original site router (all programming should revert as before after a few minutes – spot check a few areas)
- Erase the test router and repeat process with other site subnets repeatedly saving the design files and DALI logs together.
If a suspected compatibility issue is found on a subnet, please send the design file and DALI log for that particular subnet to firstname.lastname@example.org
If everything checks out you can proceed with the upgrade. Its recommended to stage the upgrade and not all routers at once if it is a medium to large site (i.e. above 5 routers should be staged) do a section/ area at a time > check functionality > move on.
Time taken to complete a survey would depend on a few variables such as assess availability and geography of a building. As an estimate, allow at least about 3-5 mins per subnet to run the steps, you could most likely cover 10 subnets in 1 hour if they’re in the same riser then maybe about 6-8 subnets in 1 hour if in 2 locations etc.
**Remember upgrading from D4 to D5 will erase the programming** It should only be performed by an experienced engineer who is familiar with the D4 to D5 upgrade process. Refer to section 4 of the attached "D5 Recommended Best Practices" Doc for best practice guidance and section 6 of the "D5 New Features and Changes from D4" Doc for the technical process.
Note: Sometimes it may also take more than 1 upload depending on networking, programming and site conditions.