Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 127)

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Firmware 1.37 - 09/2006 127
9400 HighLine | Parameter setting & configuration
I/O terminals
Monitoring function "State bus"
7.6 Monitoring function "State bus"
The state bus has been exclusively designed for Lenze controllers. The bus system can
interconnect up to 20 controllers and can be used to simulate the function of a "rip cord":
[7-1] Schematic diagram: Networking via state bus
r The state bus only knows the states "OK" and "Error".
r The state bus is a bus with multi-master capability, i.e. each device connected to the
state bus can set the state bus to the status "Error" by setting it to LOW level.
r With "Error", all devices start their adjustable response, e.g. synchronised braking of
the drive system.
r Status "Error" is also set if a device 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 case of a critical exception in the application (e.g. reset) the "release cord"
is not released, the state bus remains in the "OK" state.