Motrona MM 640, Operating Instructions Manual

Page: 8 / 44

MM64003a_e.doc / Feb-09 Page 8 / 44
2.4. Control Inputs 1 – 4
These inputs can be configured for remote functions like Reset, disable of the keyboard or
display selection purpose etc.
All control inputs require HTL level (12 ... 30 volts). The characteristics can be individually set to
either NPN (switch to -) or PNP (switch to +). For applications where edge-triggered action is
needed, the menu allows to set the active edge (rising or falling). The control inputs will also
accept signals with Namur (2-wire) standard.
For reliable operation of the control inputs, minimum impulse duration of
50
μ sec. must be ensured.
Please verify that this minimum duration will be kept even at maximum
speed of the machine
2.5. Logical Inputs Login1 - 6
The logical inputs are available for process control. These inputs receive logical information
from the process (e.g. that the actual operator command for a motor is “forward”). The monitor
can use this information together with the encoder feedback to check if the operator command
is executed correctly or not.
Each input is equipped with a programmable switch-on and switch-off delay, in order to allow
an applicable response time to the mechanics before comparing the actual state and the
scheduled state.
All logical inputs operate at HTL level (12 ... 30 volts) with PNP (switch to +) characteristics.
2.6. Relay Outputs and Transistor Outputs
The unit provides four relay outputs and four independent transistor outputs. The user is free to
assign each of the four programmable control functions and each of the four internal status
signals to any of the relays or outputs.
Whilst the relay (dry change-over) will need a switching delay of 5 - 10 msec. the corresponding
transistor output will provide the same information much faster (< 1 msec.)
All desired control functions or switching conditions are programmable by PC.
The OS32 operator software provides integration of any kind of logical combination of input
signals (nominal condition) and feedback signals (real condition) into the process.
After specification of the desired events to be used for control, it is possible to still add any of
the following characteristics to the resulting switching functions:
•
Response delay: when the switching event occurs, the output will still wait for a
programmable time until it responds
•
Timed or static operation: when the event occurs, the output can provide either dynamic
(timed) operation or static operation