User Manual SCA-LE-30-03
Two channels (A and B) are required for the working, a third channel (I) can be connected
but it is not needed. The drive can work with single ended signals, with differential signals or
with line drivers corresponding to the RS422 standard.
Note:
It is possible to operate the drive with a 24 V encoder. For this the
24V Opt. In
input
XB/28 has to be connected to a 24 VDC power supply. In this case an additional
connection to the pin
+VCC
XB/26 is not necessary.
WARNING:
Correct connection of the encoder is crucial. Otherwise the motor operates at
maximum speed without any control.
7.2 Digital
Outputs
Error Out: Monitoring Output
Whenever a system failure occurs (i.e. overtemperature), the
Error Out
output responds (LO
position), and the green LED on the front panel is switch to red. The drive output stage is
switched off and will be switch on after the failure is drop.
The output is an open-collector output and via an external pull-up resistor adaptable to the
most industrial logics, up to +30 V.
Additional information about the schematic refer chapter 3.2.
Range of Output Voltage
min. 0.4 V at LO – max. 30 V at HI
Output Impedance
>100 Ohm at LO
Permanent Output Current
20 mA max.
Note:
The logical state of this output is clearly visible by the green/red
OK/Fault
LED on
the front panel.
ElectroCraft
®
E-Mail: [email protected] www.electrocraft.com May 2009
25
