Description and purpose of the application note
Application note
–
Energy management function at adsorption dryer PDAD
–
1.10 Page 6 of 17
2.2
PDAD functions
Due to requirements for minimal power consumption, the PDAD is equipped with an energy management function.
This makes it possible to set up purge air regulation with corresponding interconnection in order to reduce air
consumption. The PDAD also includes an RJ45 interface for connecting a PC directly via a network cable (Ethernet).
With the help of software matched to the serial number, the dryer’s setting can be accessed and changed, and
errors can be read out if applicable.
These functions are integra
ted, but they’re not described in the operating instructions. The software is neither
provided by Festo nor is it available, because the device can be damaged in the event of incorrect settings.
The PDAD is also equipped with an alarm connection which is described in the operating instructions. A visual or
acoustic remote alarm system can be connected outside of the dryer via this connection (type C DIN plug). In the
event of a malfunction or if service is required, the alarm relay is switched (NO contact) and red LEDs
simultaneously indicate the error at the display panel. The alarm relay is reset when the error has been eliminated,
but only after the current switching cycle has been completed or the control device has been reset after a cartridge
change.
Figure 0:
PDAD functions
–
overview of connections at the controller
Connection for energy
management function
Controller serial number
Connection for alarm function
Service interface connection
