GEA Grasso Manual page 145

Grasso
Refrigeration Division
7.3.2 Profibus DP/DP-coupler
The LEDs on the front side of the DP/DP coupler have the following meaning:
24 Volt Error
(green) (red)
LED off
LED on
01.2003/ 0
Figure 1: Profibus DP/DP-coupler
DP1 DP2 Meaning
(green) (green)
No 24V supply voltage
24V supply is applied and is OK
Device is running; operation possible.
The device is still in the initialisation phase.
Grave error in device (exchange HW if necessary).
Operation is not possible.
No messages are running on Network 1
Messages are running on the PROFIBUS DP Network 1
(w/o fault)
No messages are running on Network 2
Messages are running on PROFIBUS DP Network 2
(w/o fault)
638660E_chapter7.doc
GRASSO SYSTEM CONTROL
Kap.7 - 7