Lenze E94ARNE Regenerative power supply - Manual (Page 96)

9400 regenerative power supply module | Parameter setting
I/O terminals
"State bus" monitoring function
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EDS94ARNExxxx EN 2.3 - 06/2014
5.6 "State bus" monitoring function
The state bus has been designed exclusively for Lenze controllers. The bus system can
interconnect up to 20 controllers and can be used to simulate the function of a "rip cord":
[5-1] Schematic diagram: Networking via state bus
 The state bus only knows the states "OK" and "Error".
 The state bus is a multi-master bus system, i.e. each node connected to the state bus
can set the state bus to the "Error" state by setting it to LOW level.
 In the "Error" state, all nodes initiate their adjustable response, e.g. synchronised
braking of the drive system to standstill.
 The "Error" state is also set if a node connected to the state bus is not supplied with
voltage.
X2/SB = State bus In/Out (reference potential GE)
X2 X2 X2
GE
24E
SB
GE
24E
SB
GE
24E
SB

Note!
Exception handling:
• In the case of a critical exception within the application (e.g. reset), the "rip
cord" is not "pulled", the state bus remains in the "OK" state.