Behavior Of The Digital Inputs - Siemens SIMOVERT FC Series Operating Instructions Manual

10.98
4.1.3

Behavior of the digital inputs

NOTES
Siemens AG 6SE7087-6CX84-0BC0
SIMOVERT MASTERDRIVES
In order to prevent an undesirable
restart when the voltage is restored
after a power failure, terminal 1
should be used for an ON
command; power-up then only
takes place when the input signal
changes from L -> H
Operating Instructions
If the fiber-optic cable is interrupted,
the last signal, present at the binary
input, is still signaled to the basic
converter; when the bus connection
is re-established, the signal then
available is transferred.
SCI board
power supply
Bus connection
fiber-optic cable
Input signal
digital input 1
Signal digital input 1
to basic unit
Input signal
digital input 2
Signal digital input 2
to basic unit
Connection and Start-up
4-13